CN110685843B - Engine cold start auxiliary device and control method - Google Patents
Engine cold start auxiliary device and control method Download PDFInfo
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- CN110685843B CN110685843B CN201910939058.5A CN201910939058A CN110685843B CN 110685843 B CN110685843 B CN 110685843B CN 201910939058 A CN201910939058 A CN 201910939058A CN 110685843 B CN110685843 B CN 110685843B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an engine cold start auxiliary device and a control method, which comprises an engine and a water supplementing tank, and is characterized in that the water supplementing tank comprises a main cabin and an auxiliary cabin, an electric heater is arranged in the main cabin, the main cabin is provided with a main cabin water inlet and a main cabin water outlet, the main cabin water inlet is connected with a main cabin water supplementing pipeline, a first engine water inlet pipeline is arranged between the main cabin water outlet and the water inlet of the engine, the auxiliary cabin is provided with an auxiliary cabin water inlet, an engine water outlet pipeline is arranged between the auxiliary cabin water inlet and the water outlet of the engine, the engine water outlet pipeline is provided with a cooling liquid pump and an engine water outlet electromagnetic valve, and the engine water outlet electromagnetic valve and the electric heater are both electrically connected with a controller. When the engine is in cold start, the electric heater heats the cooling liquid in the main cabin, the low-temperature cooling liquid of the engine enters the auxiliary cabin, and the high-temperature cooling liquid in the main cabin enters the engine, so that the temperature of the engine body is quickly increased, and the cold start performance of the engine is improved.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine cold start auxiliary device and a control method.
Background
The marine engine is easy to have starting difficulty faults under cold conditions, great trouble is brought to customers, meanwhile, in the existing water replenishing tank, water vapor can take away cooling liquid, the customers need to be replenished continuously, and particularly, in ocean or coastal ships, fresh water is deficient, so that inconvenience is caused.
Along with the improvement of the requirement of the ship on the intelligent level, the existing water replenishing tank cannot meet the requirement of intelligent control or an unmanned engine room.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide an engine cold start assist apparatus, which is the same inventive concept, and another object of the present invention is to provide a control method of the engine cold start assist apparatus to solve the problem that the engine is difficult to start in a cold condition.
To solve the first technical problem, a first technical solution of the present invention is:
an engine cold start assist device comprising: engine and moisturizing case, the moisturizing case includes main cabin and auxiliary compartment, be equipped with electric heater in the main cabin, main cabin is equipped with main cabin water inlet and main cabin delivery port, main cabin water inlet is connected with main cabin moisturizing pipeline, main cabin delivery port with be equipped with first engine water intake pipe between the water inlet of engine, auxiliary compartment is equipped with the auxiliary compartment water inlet, the auxiliary compartment water inlet with be equipped with engine outlet pipe way between the delivery port of engine, engine outlet pipe way is equipped with coolant pump and engine outlet solenoid valve, engine outlet solenoid valve with electric heater all is connected with the controller electricity.
Preferably, a one-way pipeline is arranged between the bottom of the auxiliary cabin and the bottom of the main cabin, the one-way pipeline is provided with a one-way valve, a flow meter and a one-way pipeline electromagnetic valve, and the one-way valve, the flow meter and the one-way pipeline electromagnetic valve are all electrically connected with the controller.
Preferably, the auxiliary cabin is provided with an auxiliary cabin water outlet, a second engine water inlet pipeline is arranged between the auxiliary cabin water outlet and the water inlet of the engine, the second engine water inlet pipeline is provided with an engine water inlet electromagnetic valve, and the engine water inlet electromagnetic valve is electrically connected with the controller.
Preferably, the engine cold start auxiliary device further comprises an electro-hydraulic control valve, the electro-hydraulic control valve is provided with a valve water inlet and two valve water outlets, the main cabin water inlet is connected with a main cabin water supplementing pipeline, an auxiliary cabin water supplementing pipeline is connected between the auxiliary cabin water inlets, the main cabin water supplementing pipeline and the auxiliary cabin water supplementing pipeline are respectively connected with one of the valve water outlets, and the electro-hydraulic control valve is electrically connected with the controller.
Preferably, the engine is provided with an engine water temperature sensor, a main cabin water temperature sensor is arranged at the bottom inside the main cabin, the engine water temperature sensor and the main cabin water temperature sensor are respectively electrically connected with the controller, and the controller is further electrically connected with an ambient temperature sensor.
Preferably, the main cabin is provided with a main cabin water outlet, the main cabin water outlet is connected with a main cabin water drainage pipeline, the main cabin water drainage pipeline is provided with a main cabin water drainage electromagnetic valve, the auxiliary cabin is provided with an auxiliary cabin water outlet, the auxiliary cabin water outlet is connected with an auxiliary cabin water drainage pipeline, the auxiliary cabin water drainage pipeline is provided with an auxiliary cabin water drainage electromagnetic valve, the main cabin water drainage pipeline is connected to the auxiliary cabin water drainage pipeline, and the main cabin water drainage electromagnetic valve and the auxiliary cabin water drainage electromagnetic valve are both electrically connected with the controller.
Preferably, the main cabin is provided with a main cabin high liquid level sensor and a main cabin low liquid level sensor, the auxiliary cabin is internally provided with an auxiliary cabin high liquid level sensor and an auxiliary cabin low liquid level sensor, and the main cabin high liquid level sensor, the main cabin low liquid level sensor, the auxiliary cabin high liquid level sensor and the auxiliary cabin low liquid level sensor are electrically connected with the controller.
Preferably, the main cabin is provided with a main cabin water tank pressure cover, the auxiliary cabin is provided with an auxiliary cabin water tank pressure cover, and the main cabin water tank pressure cover is connected with a condensing device;
the condensing unit comprises a condensing shell, the condensing shell is provided with a cooling liquid water inlet, a water vapor outlet and an antifreezing agent outlet, the cooling liquid water inlet and the water vapor outlet are communicated with the inner cavity of the condensing shell, the antifreezing agent outlet is located at the bottom of the condensing shell, the condensing shell is provided with a cooling medium inlet and a cooling medium outlet, a plurality of cooling medium pipes which are arranged side by side are arranged in the inner cavity of the condensing shell, the cooling medium pipes are connected between the cooling medium inlet and the cooling medium outlet, a partition plate is further arranged in the condensing shell, and the partition plate is located between the cooling liquid water inlet and the water vapor outlet.
Preferably, the main chamber water inlet is provided with a main chamber ball float valve, and the auxiliary chamber water inlet is provided with an auxiliary chamber ball float valve.
To solve the second technical problem, a second technical solution of the present invention is:
a control method of an engine cold start auxiliary device comprises the following steps:
1) switching an electric liquid control valve, supplying cooling liquid to the main cabin through a main cabin water supply pipeline, starting a motor, driving an engine by the motor, and detecting the ambient temperature by an ambient temperature sensor;
2) the engine fails to start continuously for three times, and the ambient temperature sensor detects that the ambient temperature is lower than the set starting temperature of the engine;
3) the electric heater heats the cooling liquid in the main cabin;
4) the auxiliary cabin drainage electromagnetic valve is opened, cooling liquid in the auxiliary cabin is discharged outside through an auxiliary cabin drainage pipeline, and when the auxiliary cabin low liquid level sensor detects that the liquid level in the auxiliary cabin is lower than a set value, the auxiliary cabin drainage electromagnetic valve is closed;
5) when the main cabin water temperature sensor detects that the cooling liquid is heated to be higher than a set value by the electric heater, the electric liquid control valve is closed, the main cabin water supplementing pipeline stops supplying the main cabin cooling liquid, the engine water outlet electromagnetic valve is opened, the cooling liquid pump works, the low-temperature cooling liquid in the engine enters the auxiliary cabin through the engine water outlet pipeline, and the high-temperature cooling liquid in the main cabin enters the engine through the first engine water inlet pipeline;
6) when the liquid level of the main cabin is lowered to the position of a main cabin low liquid level sensor, the engine water outlet electromagnetic valve is closed, the cooling liquid pump stops running, the one-way pipeline electromagnetic valve is opened, cooling liquid in the auxiliary cabin flows into the main cabin through the one-way pipeline, and the flow meter detects the flow in the one-way pipeline;
7) when the flow detected by the flowmeter is smaller than a set value, closing the one-way pipeline electromagnetic valve;
8) if the temperature of the cooling liquid in the engine is detected to be higher than a set value by the engine water temperature sensor, directly starting a motor carried by the engine, driving the engine to start by the motor, completing the starting of the engine, if the temperature of the cooling liquid in the engine is detected to be lower than the set value by the engine water temperature sensor, returning to the step 3), and repeating the steps 3) -8) until the engine is started successfully.
After the technical scheme is adopted, the invention has the beneficial effects that:
the water replenishing tank is provided with a main cabin and an auxiliary cabin, an electric heater is arranged in the main cabin, the main cabin is provided with a main cabin water inlet and a main cabin water outlet, the main cabin water inlet is connected with a main cabin water replenishing pipeline, a first engine water inlet pipeline is arranged between the main cabin water outlet and the water inlet of the engine, the auxiliary cabin is provided with an auxiliary cabin water inlet, an engine water outlet pipeline is arranged between the auxiliary cabin water inlet and the water outlet of the engine, the engine water outlet pipeline is provided with a cooling liquid pump and an engine water outlet electromagnetic valve, and the engine water outlet electromagnetic valve and the electric heater are both electrically connected with the controller. When the engine is in cold start, under the action of the controller, the electric heater heats the cooling liquid in the main cabin, the low-temperature cooling liquid of the engine enters the auxiliary cabin through the engine water outlet pipeline, and the high-temperature cooling liquid in the main cabin directly enters the engine through the first engine water inlet pipeline, so that the temperature of the engine body is quickly increased, the cold start performance of the engine is improved, and the problem of difficulty in cold start of the engine in a cold environment is solved.
Drawings
FIG. 1 is a schematic diagram of the engine cold start assist apparatus of the present invention;
FIG. 2 is a schematic view of the construction of the condensing unit of FIG. 1;
FIG. 3 is a control flowchart at the time of engine cold start;
in the figure: 1-an ambient temperature sensor; 2-main cabin water outlet; 3-a main cabin low liquid level sensor; 4-an electric heater; 5-a main cabin float valve; 6-pressure cover of water tank of main cabin; 7-a condensing unit; 71-a condensation shell; 72-coolant water inlet; 73-vapor outlet; 74-antifreeze outlet; 75-seawater inlet; 76-seawater outlet; 77-seawater pipes; 78-a separator; 8-an electro-hydraulic control valve; 9-auxiliary chamber high level sensor; 10-auxiliary chamber tank pressure cover; 11-auxiliary chamber ball float valve; 12-a liquid level meter; 13-auxiliary compartment low level sensor; 14-a one-way valve; 15-auxiliary chamber drain solenoid valve; 16-a sea water pump; 17-a coolant pump; 18-engine water outlet solenoid valve; 19-a motor; 20-main cabin drainage electromagnetic valve; 21-engine water temperature sensor; 22-one-way line solenoid valve; 23-main cabin water temperature sensor; 24-engine water inlet solenoid valve; 25-main compartment high level sensor; 26-a main compartment; 27-an auxiliary compartment; 28-main compartment water inlet; 29-main cabin water outlet; 30-main cabin water replenishing pipeline; 31-a first engine water intake line; 32-auxiliary chamber water inlet; 33-engine water outlet pipeline; 34-a first seawater line; 35-auxiliary cabin drain; 36-main compartment drain line; 37-auxiliary compartment drain line; 38-a second engine water intake line; 39-auxiliary cabin water supplement pipeline; 40-one-way pipeline; 41-a flow meter; 42-second seawater line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an engine cold start assist device includes: an engine carrying a motor 19 for starting the engine and an engine water temperature sensor 21 for detecting the temperature of coolant in the engine body, and a water replenishment tank including a main compartment 26 and an auxiliary compartment 27.
An electric heater 4, a liquid level meter 12, a main cabin water tank pressure cover 6, a main cabin water temperature sensor 23, a main cabin high liquid level sensor 25 and a main cabin low liquid level sensor 3 are arranged in the main cabin 26, the main cabin water temperature sensor 23 is arranged at the bottom of the main cabin 26, the main cabin 26 is provided with a main cabin water inlet 28, a main cabin water outlet 29 and a main cabin water outlet 2, the main cabin water outlet 29 and the main cabin water outlet 2 are both positioned at the bottom of the main cabin 26, and the main cabin water inlet 28 is provided with a main cabin ball float valve 5.
The main cabin water inlet 28 is connected with a main cabin water supplementing pipeline 30, a first engine water inlet pipeline 31 is arranged between the main cabin water outlet 29 and the engine water inlet, the main cabin water outlet 2 is connected with a main cabin water discharging pipeline 36, and the main cabin water discharging pipeline 36 is provided with a main cabin water discharging electromagnetic valve 20.
The pressure cover 6 of the main cabin water tank is provided with a pressure valve which is connected with a condensing device 7. As shown in fig. 2, the single-line arrows in fig. 2 indicate the flow direction of the cooling liquid, and the double-line arrows indicate the flow direction of the seawater. The condensing device 7 comprises a condensing shell 71, the condensing shell 71 is provided with a cooling liquid inlet 72 and a water vapor outlet 73 which are communicated with the inner cavity of the condensing shell 71, and an antifreeze outlet 74 which is communicated with the main chamber 26, the antifreeze outlet 74 is positioned at the bottom of the condensing shell 71, the condensing shell 71 is provided with a seawater inlet 75 and a seawater outlet 76, a plurality of seawater pipes 77 which are arranged in parallel are arranged in the inner cavity of the condensing shell 71, the seawater pipes 77 are communicated between the seawater inlet 75 and the seawater outlet 76, a partition plate 78 is further arranged in the condensing shell 71, and the partition plate 78 is positioned between the cooling liquid inlet 72 and the water vapor outlet 73.
The seawater is sucked by the seawater pump 16, enters the seawater pipe 77 through the first seawater pipe 34 and the seawater inlet 75, and is discharged from the seawater outlet 76. Meanwhile, the coolant water vapor from the main chamber 26 flows through the pressure cover 6 of the water tank of the main chamber and then enters the condensing device 7, the water vapor flows into the inner cavity of the condensing shell 71 from the coolant water inlet 72 and then is discharged from the water vapor outlet 73, the water vapor flows around the partition plate 78 in the U-shaped direction to enhance the condensing effect of the seawater pipe 77 on the water vapor, and the antifreeze condensed by the seawater pipe 77 flows back into the main chamber 26 from the antifreeze outlet 74.
The seawater pump 16 is also connected to a second seawater pipe 42, and the seawater in the second seawater pipe 42 cools the coolant in the intercooler, heat exchanger, etc. of the engine.
The auxiliary cabin 27 is internally provided with a liquid level meter 12, an auxiliary cabin high liquid level sensor 9 and an auxiliary cabin low liquid level sensor 13, the auxiliary cabin 27 is provided with an auxiliary cabin water inlet 32, an auxiliary cabin water outlet 35 and an auxiliary cabin water tank pressure cover 10, the auxiliary cabin water outlet 35 is arranged at the bottom of the auxiliary cabin 27, and the auxiliary cabin water inlet 32 is provided with an auxiliary cabin ball float valve 11.
An engine water outlet pipeline 33 is arranged between the auxiliary cabin water inlet 32 and the water outlet of the engine, the engine water outlet pipeline 33 is provided with a cooling liquid pump 17 and an engine water outlet electromagnetic valve 18, an auxiliary cabin water outlet pipeline 37 is connected with an auxiliary cabin water outlet pipeline 35, the auxiliary cabin water outlet pipeline 37 is provided with an auxiliary cabin water outlet electromagnetic valve 15, a main cabin water outlet pipeline 36 is connected with the auxiliary cabin water outlet electromagnetic valve 15, a second engine water inlet pipeline 38 is connected between the auxiliary cabin water outlet pipeline 35 and the water inlet of the engine, and the second engine water inlet pipeline 38 is provided with an engine water inlet electromagnetic valve 24. The auxiliary chamber water inlet 32 is also connected with an auxiliary chamber water replenishing pipeline 39.
The main cabin water replenishing pipeline 30 and the auxiliary cabin water replenishing pipeline 39 are both connected to the electro-hydraulic control valve 8, the electro-hydraulic control valve 8 is provided with a valve water inlet and two valve water outlets, the two valve water outlets are respectively connected with the main cabin water replenishing pipeline 30 and the auxiliary cabin water replenishing pipeline 39, the main cabin water replenishing pipeline 30 and the auxiliary cabin water replenishing pipeline 39 can be simultaneously cut off by the electro-hydraulic control valve 8, and only one of the two pipelines can be communicated.
A check line 40 is connected between the bottom of the main chamber 26 and the bottom of the auxiliary chamber 27, the check line 40 is provided with a check valve 14, a flow meter 41 and a check line solenoid valve 22, and the coolant can flow from the auxiliary chamber 27 to the main chamber 26 only through the check valve 14.
The electric heater 4, the main chamber high liquid level sensor 25, the main chamber low liquid level sensor 3, the main chamber water discharge electromagnetic valve 20, the auxiliary chamber high liquid level sensor 9, the auxiliary chamber low liquid level sensor 13, the engine water outlet electromagnetic valve 18, the auxiliary chamber water discharge electromagnetic valve 15, the electro-hydraulic control valve 8, the main chamber water temperature sensor 23, the engine water temperature sensor 21, the coolant pump 17, the sea water pump 16, the one-way valve 14, the flow meter 41 and the one-way pipeline electromagnetic valve 22 are all electrically connected with the controller, and the controller is also electrically connected with the environment temperature sensor 1 for detecting the environment temperature. The controller is preferably an engine ECU or a singlechip or a PLC programmable controller.
Taking a marine engine as an example, the cold start of the engine by using the device comprises the following steps:
1) starting a motor, driving the engine to start, switching the electro-hydraulic control valve 8, supplying cooling liquid to the main cabin 26 through the main cabin water supply pipeline 30, and detecting the ambient temperature by the ambient temperature sensor 1;
2) if the engine fails to start continuously for three times and the ambient temperature sensor 1 detects that the ambient temperature is lower than the set starting temperature of the engine;
3) the electric heater 4 heats the coolant in the main compartment 26;
4) the auxiliary chamber drain solenoid valve 15 is opened, the cooling liquid in the auxiliary chamber 27 is discharged outside through the auxiliary chamber drain pipeline 37, and when the liquid level in the auxiliary chamber 27 drops to the position of the auxiliary chamber low liquid level sensor 13, the auxiliary chamber drain solenoid valve 15 is closed;
5) when the main cabin water temperature sensor 23 detects that the cooling liquid is heated to be higher than a set value by the electric heater 4, the electric liquid control valve 8 is closed, the main cabin water replenishing pipeline 30 stops supplying the cooling liquid to the main cabin 26, the engine water outlet electromagnetic valve 18 is opened, the cooling liquid pump 17 works, the low-temperature cooling liquid in the engine enters the auxiliary cabin 27 through the engine water outlet pipeline 33, the high-temperature cooling liquid in the main cabin 26 enters the engine through the first engine water inlet pipeline 31, and the temperature of the engine body is rapidly increased;
6) when the liquid level of the main cabin 26 is lowered to the position of the main cabin low liquid level sensor 3, the engine water outlet electromagnetic valve 18 is closed, the cooling liquid pump 17 stops running, the one-way pipeline electromagnetic valve 22 is opened, the cooling liquid in the auxiliary cabin 27 flows into the main cabin 26 through the one-way pipeline 40 to supplement the cooling liquid in the main cabin 26, and the flow meter 41 detects the flow rate in the one-way pipeline 40;
7) when the flow detected by the flowmeter 41 is less than the set value, the one-way pipeline electromagnetic valve 22 is closed to prevent the liquid level in the auxiliary chamber 27 from being too low;
8) if the temperature of the coolant in the engine is detected by the engine water temperature sensor 21 to be higher than the set value, the motor 19 carried by the engine is directly started, the motor 19 drives the engine to start, the engine is started successfully, if the temperature of the coolant in the engine is detected by the engine water temperature sensor 21 to be lower than the set value, the step 3) is returned, and the steps 3) -8) are repeated until the engine is started successfully.
In addition to the above-mentioned improvement of the cold start effect of the engine, the water replenishment tank has the advantages of the main compartment 26 and the auxiliary compartment 27:
(1) standby non-stop function of auxiliary compartment 27
After the ship loses power, the safety of the ship can be seriously influenced, and the ship gauge requires two sets of parts such as a pump, an ECU (electronic control unit), a sensor and the like so as to ensure the sustainable operation. The engine cold start assist apparatus and control method of the present invention can reserve the auxiliary chamber 27. When the main cabin 26 has faults such as leakage or the liquid level of the cooling liquid is lower than a set value, the main cabin low liquid level sensor 3 transmits an alarm signal, the electro-hydraulic control valve 8 controls the cooling liquid to flow into the auxiliary chamber 27 from the auxiliary cabin water replenishing pipeline 39, meanwhile, the engine water inlet electromagnetic valve 24 is opened, the cooling liquid enters the engine from the second engine water inlet pipeline 38, normal starting and use of the engine are guaranteed, and the main cabin 26 can be overhauled at the moment.
(2) Water temperature raising treatment for engine
When the marine engine needs to run under overload under special working conditions or a heat exchanger is blocked and other faults occur, water temperature is high, alarm is easy to occur, normal operation and reliability of the engine are seriously affected due to overhigh water temperature, but the ship cannot be stopped and overhauled immediately.
When the water temperature is high, the water outlet electromagnetic valve 18 of the engine is opened, the coolant pump 17 runs to pump the high-temperature coolant in the engine into the auxiliary chamber 27, and then the low-temperature coolant in the main chamber 26 flows into the engine for supplement, so that the cooling effect on the engine is achieved.
(3) High-low temperature water engine
For a large marine engine, there are usually two internal circulation water systems, and two water replenishing tanks are required, and by using the water replenishing tanks, the main compartment 26 and the auxiliary compartment 27 can simultaneously satisfy the two internal circulation water systems.
The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.
Claims (10)
1. An engine cold start assist device comprising: the engine and the water replenishing tank are characterized in that the water replenishing tank comprises a main cabin and an auxiliary cabin, an electric heater is arranged in the main cabin, the main cabin is provided with a main cabin water inlet and a main cabin water outlet, the main cabin water inlet is connected with a main cabin water supplementing pipeline, a first engine water inlet pipeline is arranged between the water outlet of the main cabin and the water inlet of the engine, the auxiliary cabin is provided with an auxiliary cabin water inlet, an engine water outlet pipeline is arranged between the auxiliary cabin water inlet and the water outlet of the engine, the engine water outlet pipeline is provided with a cooling liquid pump and an engine water outlet electromagnetic valve, the engine water outlet electromagnetic valve and the electric heater are both electrically connected with the controller, a one-way pipeline is arranged between the bottom of the auxiliary cabin and the bottom of the main cabin, an auxiliary cabin water outlet is arranged on the auxiliary cabin, and an auxiliary cabin water drainage pipeline is connected to the auxiliary cabin water outlet.
2. An engine cold start assist device as set forth in claim 1 wherein said one-way line is provided with a one-way valve, a flow meter and a one-way line solenoid valve, said one-way valve, said flow meter and said one-way line solenoid valve all being electrically connected to said controller.
3. An engine cold start assist device as claimed in claim 1 wherein said auxiliary chamber is provided with an auxiliary chamber drain, a second engine water inlet line is provided between said auxiliary chamber drain and said engine water inlet, said second engine water inlet line is provided with an engine water inlet solenoid valve, said engine water inlet solenoid valve is electrically connected to said controller.
4. An engine cold start auxiliary device according to claim 1, wherein said engine cold start auxiliary device further comprises an electro-hydraulic control valve, said electro-hydraulic control valve is provided with a valve water inlet and two valve water outlets, said main compartment water inlet is connected with a main compartment water replenishing pipeline, an auxiliary compartment water replenishing pipeline is connected between said auxiliary compartment water inlets, said main compartment water replenishing pipeline and said auxiliary compartment water replenishing pipeline are respectively connected with one of said valve water outlets, and said electro-hydraulic control valve is electrically connected with said controller.
5. The engine cold start auxiliary device of claim 1, wherein said engine is provided with an engine water temperature sensor, said main compartment interior bottom is provided with a main compartment water temperature sensor, said engine water temperature sensor and said main compartment water temperature sensor are respectively electrically connected with said controller, said controller is also electrically connected with an ambient temperature sensor.
6. An engine cold start assist device as set forth in claim 1 wherein said primary compartment has a primary compartment drain port connected to a primary compartment drain line, said primary compartment drain line having a primary compartment drain solenoid valve, said secondary compartment drain line having a secondary compartment drain solenoid valve, said primary compartment drain line connected to said secondary compartment drain line, said primary compartment drain solenoid valve and said secondary compartment drain solenoid valve both being electrically connected to said controller.
7. The engine cold start assist device of claim 1 wherein said primary compartment is provided with a primary compartment high level sensor and a primary compartment low level sensor, said auxiliary compartment is provided with an auxiliary compartment high level sensor and an auxiliary compartment low level sensor, and said primary compartment high level sensor, said primary compartment low level sensor, said auxiliary compartment high level sensor and said auxiliary compartment low level sensor are all electrically connected to said controller.
8. An engine cold start assist device as set forth in claim 1 wherein said primary compartment is provided with a primary compartment tank pressure cap and said auxiliary compartment is provided with an auxiliary compartment tank pressure cap, said primary compartment tank pressure cap being connected to a condensing device;
the condensing unit comprises a condensing shell, the condensing shell is provided with a cooling liquid water inlet, a water vapor outlet and an antifreezing agent outlet, the cooling liquid water inlet and the water vapor outlet are communicated with the inner cavity of the condensing shell, the antifreezing agent outlet is located at the bottom of the condensing shell, the condensing shell is provided with a cooling medium inlet and a cooling medium outlet, a plurality of cooling medium pipes which are arranged side by side are arranged in the inner cavity of the condensing shell, the cooling medium pipes are connected between the cooling medium inlet and the cooling medium outlet, a partition plate is further arranged in the condensing shell, and the partition plate is located between the cooling liquid water inlet and the water vapor outlet.
9. An engine cold start assist device as set forth in claim 1 wherein said main chamber water inlet is provided with a main chamber float valve and said auxiliary chamber water inlet is provided with an auxiliary chamber float valve.
10. The control method of the engine cold start auxiliary device is characterized by comprising the following steps:
1) switching an electric liquid control valve, supplying cooling liquid to the main cabin through a main cabin water supply pipeline, starting a motor, driving an engine by the motor, and detecting the ambient temperature by an ambient temperature sensor;
2) the engine fails to start continuously for three times, and the ambient temperature sensor detects that the ambient temperature is lower than the set starting temperature of the engine;
3) the electric heater heats the cooling liquid in the main cabin;
4) the auxiliary cabin drainage electromagnetic valve is opened, cooling liquid in the auxiliary cabin is discharged outside through an auxiliary cabin drainage pipeline, and when the auxiliary cabin low liquid level sensor detects that the liquid level in the auxiliary cabin is lower than a set value, the auxiliary cabin drainage electromagnetic valve is closed;
5) when the main cabin water temperature sensor detects that the cooling liquid is heated to be higher than a set value by the electric heater, the electric liquid control valve is closed, the main cabin water supplementing pipeline stops supplying the main cabin cooling liquid, the engine water outlet electromagnetic valve is opened, the cooling liquid pump works, the low-temperature cooling liquid in the engine enters the auxiliary cabin through the engine water outlet pipeline, and the high-temperature cooling liquid in the main cabin enters the engine through the first engine water inlet pipeline;
6) when the liquid level of the main cabin is lowered to the position of a main cabin low liquid level sensor, the engine water outlet electromagnetic valve is closed, the cooling liquid pump stops running, the one-way pipeline electromagnetic valve is opened, cooling liquid in the auxiliary cabin flows into the main cabin through the one-way pipeline, and the flow meter detects the flow in the one-way pipeline;
7) when the flow detected by the flowmeter is smaller than a set value, closing the one-way pipeline electromagnetic valve;
8) if the temperature of the cooling liquid in the engine is detected to be higher than a set value by the engine water temperature sensor, directly starting a motor carried by the engine, driving the engine to start by the motor, completing the starting of the engine, if the temperature of the cooling liquid in the engine is detected to be lower than the set value by the engine water temperature sensor, returning to the step 3), and repeating the steps 3) -8) until the engine is started successfully.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2500540A1 (en) * | 2009-11-13 | 2012-09-19 | Calsonic Kansei Corporation | Thermal storage system and method for controlling same |
| CN103758674A (en) * | 2013-12-30 | 2014-04-30 | 山河智能装备股份有限公司 | Diesel engine low-temperature auxiliary starting loop and control method thereof |
| CN205505183U (en) * | 2016-03-10 | 2016-08-24 | 上海碳索能源环境服务有限公司 | Two water tank structure's water supply system |
| CN106523238A (en) * | 2016-10-29 | 2017-03-22 | 段文清 | Engine water cycle controlling method and system of loader |
-
2019
- 2019-09-30 CN CN201910939058.5A patent/CN110685843B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2500540A1 (en) * | 2009-11-13 | 2012-09-19 | Calsonic Kansei Corporation | Thermal storage system and method for controlling same |
| CN103758674A (en) * | 2013-12-30 | 2014-04-30 | 山河智能装备股份有限公司 | Diesel engine low-temperature auxiliary starting loop and control method thereof |
| CN205505183U (en) * | 2016-03-10 | 2016-08-24 | 上海碳索能源环境服务有限公司 | Two water tank structure's water supply system |
| CN106523238A (en) * | 2016-10-29 | 2017-03-22 | 段文清 | Engine water cycle controlling method and system of loader |
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