CN204738873U

CN204738873U - A two -stroke -cycle engine for car, motorcycle

Info

Publication number: CN204738873U
Application number: CN201520423259.7U
Authority: CN
Inventors: 陈志新
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-18
Filing date: 2015-06-18
Publication date: 2015-11-04
Anticipated expiration: 2025-06-18

Abstract

The utility model provides a two -stroke -cycle engine for car, motorcycle, includes cylinder, cylinder head, connect in the crankcase of cylinder lower part, the spark plug on locating this cylinder head, the gas vent on locating the cylinder wall body and be less than inlet port, the piston in locating the cylinder, the piston ring on being equipped with the piston external diameter of gas vent, the connecting rod of crank, connecting crank and piston in locating the crankcase. Admitting air the electron booster and are connected in an inlet port intercommunication energy storage room, this energy storage room and an engine, is equipped with the air throttle on the pipeline that inlet port and energy storage room are connected, still are equipped with a direct injection formula fuel nozzle in the cylinder head. Owing to adopted electron air plenum ware and energy storage room for the engine provides elementary intake pressure, be equipped with the interior direct injection's of jar fuel nozzle and secondary air combustion chamber again, solved two -stroke -cycle engine's unfavorable factor. And simple structure, low in manufacturing cost, the fault rate of engine also very reduces.

Description

A kind of two stroke engine for automobile, motorcycle

Technical field

The utility model relates to the equipment of a kind of automobile, motor power train in vehicle application, particularly relates to a kind of performance car Two stroke engine and supplementary equipment thereof.

Background technique

In general, obtain by burns gasoline or diesel oil for vehicle required drive, and the motor of combustion fuel adopts two strokes or four-journey as a work cycle, produce power with this work done, motor work cycle piston needs pump twice or four times in other words.Piston respectively once does the title two-stroke engine of a merit up and down, piston up and down each do a merit for twice be called four-stroke engine.

Existing two stroke engines, because fuel oil and air need to enter crankcase, carry out primary compression, and thus the movable device such as bent axle and connecting rod lubrication is bad; Because suction port communicated with relief opening in some period, easily make inflammable mixture directly discharge from relief opening, cause the problems such as hazardous emission increase and oil consumption increase; Because two-stroke engine is designed with two stage compression in order to the smooth air inlet of energy, cause air inlet unstable, thus Power output is steady, and power is difficult to effective control.

Existing four-stroke engine, owing to adding distribution device, thus adds a large amount of components and parts, and one is cause cost of production to increase considerably, two be causing trouble occur probability increase, three be increased motor run resistance.Existing four-stroke engine is although have many good qualities, but abandon some advantages of two-stroke engine, as, two-stroke engine specific power high (power of the two-stroke engine of same displacement is the twice of four-stroke engine in theory) and two stroke engine making with low cost simple, be convenient to simplify the advantages such as production fast in enormous quantities at low cost, embody existing automobile and motorcycle motor very not perfect.

For overcoming above-mentioned defect, have developed the supplementary equipment improving engine performance at present, as, increase air inlet Auxiliary valves at two-stroke engine to carry out stable engine power, on four-stroke engine, arrange the equipment such as exhaust gas turbine increase air inflow, but up to the present, owing to existing, more problem, particularly efficiency are low, expense tackles the problem at its root greatly and not, so be also difficult to be widely used.

Although Hyundai Motor motorcycle engine has done very large power ascension, also can only improve little power, and add many supplementary equipment, improve manufacture cost.In order to reduce the discharge of waste gas, industry has done multiple trial, comprises and adopts the system such as ternary catalyzing unit, EGR, just but these trials all need optional equipment to complete, and be difficult to reach satisfied effect.

Model utility content

The utility model in order to solve the technical problem of above-mentioned two stroke engine, provide a kind of structure simple, export steadily and automobile, the Two cycle motorcycle engine of high-efficiency environment friendly.

The one that the utility model proposes is for automobile, the two stroke engine of motorcycle, comprise cylinder, be located at the cylinder head of this cylinder head, be connected to the crankcase of cylinder bottom, be located at the spark plug in this cylinder head, be located at the relief opening on cylinder wall body and the inlet hole lower than relief opening, be located at the piston in cylinder, be provided with the piston ring on piston external diameter, be located at the crank in described crankcase, the connecting rod of connecting crank and piston, described inlet hole is communicated with an accumulation chamber, this accumulation chamber is connected with an engine charge Electron pressurizing unit, the pipeline that inlet hole is connected with accumulation chamber is provided with closure, described cylinder head is also provided with an Incylinder direct injection fuel nozzle.

Preferably, described relief opening is in communication with the outside by secondary-burning chamber, and this secondary-burning chamber is provided with air injection valve.

Preferably, the piston external diameter of the below of described piston ring is also provided with oil seal ring.

The utility model compared with prior art, provides elementary suction pressure owing to have employed high-performance electronic air-admission pressure-booster for motor, is designed with again the fuel nozzle of inner cylinder direct injection, for engine air inner cylinder direct injection fuel oil.The fuel oil of inner cylinder direct injection is owing to being that high pressure conditions sprays, and the fuel-oil atmozation ejected is good.In addition, can also accurately control injection time and fuel injection quantity, fuel oil can be made to burn more fully, reach the object of fuel-economizing and environmental protection.The utility model is also designed with and effulent is oxidized clean secondary air firing chamber further, solve the unfavorable factor of two stroke engine, the distribution device as four stroke engine is not needed yet, simpler than conventional, four-stroke Structure of Internal-Combustion Engine, manufacture cost will significantly reduce, and breakdown in the motor rate also can reduce because components and parts reduce.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, a kind of two stroke engine for automobile, motorcycle that the utility model embodiment provides, it comprises: cylinder 11, the cylinder head 23 being located at this cylinder head, the crankcase 12 being connected to cylinder bottom, the spark plug 22 be located in this cylinder head 23, be located at relief opening 21 on cylinder 11 wall body and inlet hole 18, this inlet hole 18 along cylinder-bore axis a little less than relief opening 21(position relationship as shown in Figure 1), when piston stroking upward is to top dead center, inlet hole 18, also above oil piston ring 17, is unlikely to pressure air and enters in crankcase.Be located at the piston 15 in cylinder 11, this piston is similar to other engine pistons, but structure is more tight, is convenient to the opening and closing controlling inlet hole and relief opening.Be provided with the piston ring 14 on piston external diameter, the connecting rod 13 of crank 16, connecting crank and the piston be located in crankcase 12.Described inlet hole 18 is communicated with an accumulation chamber 26, for saving pressure air, the pressure air that engine charge Electron pressurizing unit 27 produces temporarily can be stored, and when being convenient to that piston 15 is descending opens suction port, pressure air enters cylinder 11.This accumulation chamber 26 is connected with high performance engine charge Electron pressurizing unit 27 by a pressure air suction port 30, for providing pressure air to motor, the pipeline that inlet hole 18 is connected with accumulation chamber 26 is provided with the closure 24 of the air inflow for controlling motor, described cylinder head 23 is also provided with an Incylinder direct injection fuel nozzle 25.Incylinder direct injection fuel nozzle is used for spraying into high pressure fuel in cylinder 11.Because fuel oil is high pressure ejection, the fuel oil of ejection becomes fine mist, and add the high temperature of gas after compression in upper cylinder half, fuel oil completes atomization in short-term.Oil nozzle design starts to in-cylinder injection fuel oil, in order to avoid fuel oil is overflowed from relief opening after piston stroking upward crosses relief opening 21.In the present embodiment, the relief opening 21 of cylinder is in communication with the outside by secondary-burning chamber 29, and this secondary-burning chamber is provided with air injection valve 28.This air injection valve is used for spraying into fresh air in secondary air firing chamber 29, to make in cylinder 11 a small amount of gas not having complete oxidation oxidation reaction more fully further here, plays the effect of purifying exhaust gas.The piston external diameter of the below of described piston ring 14 is also provided with oil seal ring 17.Adopt oil end wet type lubricating system, this oil seal ring 17 is for oil return.

Consult Fig. 1, whole system is work like this: when ignition key is opened, engine charge Electron pressurizing unit 27 works, and the air with pressure is sent into accumulator 26 by pressure air suction port 30 and stores, so that follow-up use.Open solar term 24, ato unit, the bent axle 16 rotated drives piston 15 descending, when pressure air suction port 30 is opened, air with pressure enters in cylinder 11 through closure 24, and piston 15 continues to go downwards to and returns after bottom dead center, when piston 15 rises to and crosses relief opening 21, in cylinder 11, gas starts compression, and air will complete compression in cylinder 11.At this moment, fuel nozzle 25 starts injected fuel in cylinder 11, and the fuel oil of high pressure goes out through oil nozzle spray 25, has defined vaporific, through mixing with air, being atomized rapidly, defining inflammable mixture.Piston 15 continues up, and in certain angle of budc, spark plug 22 starts igniting, the rapid burning expansion of inflammable mixture, and generation pressure, promotes engine piston 15 fast downlink, and then band dynamic crankshaft 16 rotates acting, and external outputting power.Piston 15 moves down, when arriving relief opening 21, relief opening 21 is opened, red-hot and go out outside cylinder with the gas after the burning of certain pressure, enter secondary-burning chamber 29, the gas of a small amount of complete oxidation that is not also able to do in time is mixed with the fresh air sprayed into by air injection valve 28 and continues to be oxidized, until complete oxidation in secondary-burning chamber 29.And the gas emitted is again through the further purification of the equipment such as three-element catalytic, it is made to reach the requirement of environmental protection.Engine piston 15 after descending acting, through returning after bottom dead center, enters next work cycle.Because air and fuel oil do not enter in crankcase 12, crankcase can be designed to the lubrication system as four stroke engine, can adopt oil end wet type lubrication.Piston 15 is also designed with oil seal ring 17, for the oil return effect as four stroke engine, further increases the lubrication of two stroke engine.Make the utility model obtain good lubrication, extend its working life.

Due to the utility model and corollary equipment simpler than conventional, four-stroke engine structure, work is more reliable, and cost of production is lower.When the utility model and corollary equipment thereof are contained in after on vehicle, the general structure of vehicle will be compacter.Except applicable automobile and motorcycle uses, be also suitable for the water of middle fraction horsepower, land traffic maneuvering gear use.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.

Claims

1. one kind for automobile, the two stroke engine of motorcycle, comprise cylinder (11), be located at the cylinder head (23) of this cylinder head, be connected to the crankcase (12) of cylinder bottom, be located at the spark plug (22) in this cylinder head (23), be located at the piston (15) in cylinder (11), be located at the piston ring (14) on piston external diameter, be located at the crank (16) in described crankcase (12), the connecting rod (13) of connecting crank and piston, it is characterized in that, described cylinder (11) wall body is provided with relief opening (21) and the inlet hole (18) lower than relief opening, described inlet hole is communicated with an accumulation chamber (26), this accumulation chamber is connected with an engine charge Electron pressurizing unit (27), the pipeline that inlet hole is connected with accumulation chamber (26) is provided with closure (24), described cylinder head (23) is also provided with an Incylinder direct injection fuel nozzle (25).

2., as claimed in claim 1 for the two stroke engine of automobile, motorcycle, it is characterized in that, described relief opening (21) is in communication with the outside by secondary-burning chamber (29), and this secondary-burning chamber is provided with air injection valve (28).

3., as claimed in claim 1 for the two stroke engine of automobile, motorcycle, it is characterized in that, the piston external diameter of the below of described piston ring (14) is also provided with oil seal ring (17).