WO2017107967A1

WO2017107967A1 - Fail-safe speed-adjustment electronic control water pump

Info

Publication number: WO2017107967A1
Application number: PCT/CN2016/111644
Authority: WO
Inventors: 岳胜桥; 龚达锦; 吴海峰; 郑福新
Original assignee: 苏州睿昕汽车配件有限公司
Priority date: 2015-12-23
Filing date: 2016-12-23
Publication date: 2017-06-29
Also published as: CN105464779A; CN105464779B

Abstract

A fail-safe and speed adjustment electronic control water pump comprises a belt pulley (3), an upper cover (13), a bearing (20), a water seal (22), a primary shaft (23), and a water pump housing (24). One end of the primary shaft (23) is connected to the water pump housing (24), and the other end of the primary shaft (23) extends into the upper cover (13). The upper cover (13) is connected to the belt pulley (3). The belt pulley (3) is connected to the water pump housing (24) by means of the bearing (20). The water seal (22) and the water pump housing (24) are disposed on the primary shaft (23) in the radial direction. The water pump also comprises a driving plate (12), a fixed seat (14), a friction plate (16), a belt pulley electromagnetic chuck (17), and an electronic coil (24). The driving plate (12) and the friction plate (16) are tightly pressed by means of a spring sheet (5). The friction plate (16) is sleeved on the fixed seat (14). The fixed seat (14) is sleeved on the primary shaft (23). The electromagnetic coil (21) for a clutch is disposed in the belt pulley (3). The electromagnetic coil (21) is connected to an ECU. An engine cooling system using the electronic control water pump has an obvious in energy-saving effect, and can be widely used in various fields of modern transportation, shipping, agricultural machinery, generator sets and the like.

Description

Anti-failure speed control electric control water pump

Technical field

The invention relates to a starting water pump clutch of an automobile engine cooling system, in particular to an anti-failure speed regulating electromagnetic water pump clutch.

Background technique

The clutch is located in the flywheel housing between the engine and the transmission, and the clutch assembly is fixed to the rear plane of the flywheel by screws, and the output shaft of the clutch is the input shaft of the transmission. During the driving of the vehicle, the driver can step on or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the transmission to cut off or transmit the power input by the engine to the transmission. Clutches are a common component in mechanical transmissions that separate or engage the drive train at any time. The clutch has smooth joint, quick and complete separation; convenient adjustment and repair; small outer dimensions; small mass; good wear resistance and sufficient heat dissipation capability.

Up to now, internal combustion engines widely used in mechanical engineering such as automobiles, tractors, ships, generator sets, construction machinery, etc. are equipped with cooling systems, which are equipped with pumps for supplying cooling water. However, these pumps are currently They are all mechanically driven and fixed in transmission ratio. In this way, no matter how the load in the engine changes, whether the water temperature is high or low, whether the discharge is good or bad, whether the pump water is needed, how much water is pumped, etc., the pump works according to a fixed connection method and a fixed transmission ratio. Pumping water, that is to say it all works at the same gear ratio and at the same speed.

Studies have shown that the engine is most efficient at 83 ° C - 93 ° C. The prior art engine warm-up time is about 20-30 minutes, and the engine warm-up time is about 10 minutes after the improvement of the technique of the present invention. 60% of the time during normal driving, the car does not need high-speed operation of the pump. High-speed cooling is required under the condition of climbing or heavy load. However, for the engine, the internal water temperature is equivalent to the human body temperature, and only the human body temperature is normal. The human body can be healthy. Once a person's body temperature changes, the body will have problems, and the same is true for the engine. Therefore, it is especially important to maintain the engine temperature. Obviously, the pump designed with the above structure can not adapt to the changing process requirements of the engine. In many cases, it will cause excessive cooling, reduce engine efficiency, cause damage to the engine, and waste a lot of energy. Only a relatively short period of time is just to meet the working requirements of the engine. In view of the above-described work state in which the pump and the engine are not coordinated, there is an urgent need for improvement by those skilled in the art.

Summary of the invention

OBJECT OF THE INVENTION The object of the present invention is to solve the deficiencies of the prior art and provide an anti-failure speed-regulating electric control water pump, which can be adapted to the multi-end working process requirements of the engine and is suitable for the engine speed running. Thereby achieving the effect of high efficiency, energy saving and safe operation.

Technical Solution: In order to achieve the above object, an anti-failure speed-regulating electric control water pump according to the present invention comprises: a pulley, an upper cover, a bearing, a water seal, a main shaft and a water pump housing, and one end of the main shaft and the water pump The housing is connected, the other end of the main shaft extends into the upper cover, the upper cover is connected with the pulley, the pulley is connected with the water pump housing through the bearing, the radial direction of the main shaft is provided with a water seal and a water pump housing, and the utility model further comprises: a driving disc, friction a disk, a fixing seat, a pulley electromagnetic chuck and an electromagnetic coil, wherein the driving disk and the friction disk are pressed by a spring piece, the friction disk is sleeved on the fixing seat, the fixing seat is sleeved on the main shaft, and the electromagnetic suction cup of the pulley is active On the left side of the disc, an electromagnetic coil is disposed in the pulley, and the clutch electromagnetic coil is connected to the ECU.

As a further preferred embodiment of the invention, the friction disc and the drive disc are joined together using a pre-compacting technique.

As a further preferred embodiment of the present invention, the rivets are sequentially passed through the spring piece, the gap pad 1 and the drive plate and fastened together into an integral part. During the assembly process, the clearance between the drive plate and the pulley electromagnetic chuck is 1.5 mm. When the friction disc is press-fitted, the rivet on the active disc is pre-tightened by 1 mm in the direction of the spring piece, and the gap between the active disc and the pulley electromagnetic chuck is changed to 0.5 mm, and the friction disc and the active disc assembly are passed through the spring piece. The deformation is 1mm, and the pressing force ensures that the water pump rotates at a high speed when there is no electromagnetic force, which prevents the friction plate from falling off from the active disk and causing the pressing force to fail.

As a further preferred embodiment of the present invention, the distance between the suctioned active disk and the pulley electromagnetic chuck is 0.3 mm to 0.5 mm.

As a further preferred embodiment of the present invention, the upper cover is provided with a permanent magnet and a magnet ring.

Further preferably, the gap between the permanent magnet and the friction disk is about 1 mm.

As a further preferred aspect of the invention, a water pump impeller is mounted in the water pump housing.

As a further preferred embodiment of the present invention, the thickness of the spring piece is 1.2 mm, the material is 65Mn, and the 65Mn has high strength and toughness and plasticity after heat treatment and cold drawing hardening; under the same surface state and complete hardening, The fatigue limit is equivalent to that of the alloy spring, which effectively ensures the reliability of the spring piece during operation.

Working principle: When the engine is just starting, because the water temperature is low, the ECU gives the clutch electromagnetic coil energization signal, the friction disc is separated from the active disc, the water pump keeps running at low speed with the cover, and the engine warms up quickly. When the engine water temperature rises to 93 °C, the clutch solenoid is de-energized, the friction disc is in contact with the driving disc, and the pump operates at the direct transmission speed. When the engine water temperature is lower than 83 °C, the clutch electromagnetic coil is energized, the friction disc is fitted with the driving disc, and the water pump is reduced from the direct drive speed to the following speed. It can be seen that the operation of the water pump is completely adapted to the changing working process requirements of the engine, so that the engine can be well protected and the engine is always operated safely.

Advantageous Effects: An anti-failure speed-regulated electric control water pump according to the present invention, an improved automobile engine cooling system It has obvious energy-saving effect and can be widely used in modern transportation, ship transportation, agricultural machinery and generator sets, etc., to upgrade the mechanical water pump in various fields to a new level and modern advanced stage, so that the engine also jumps. To a new level and modern advanced stage, the engine cooling system work is more scientific, more suitable for the needs of the engine work process, more energy efficient, safer and more environmentally friendly. Therefore, the present invention is also a green environmental protection project, so the invention is bound to be widely promoted in the engine industry, which has made a great progress in the engine industry.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

Figure 2 is a partial enlarged view of the driving disk and the friction disk in a coupled state;

Figure 3 is a partial enlarged view of the driving disc and the friction disc in a separated state;

Figure 4 is a schematic structural view of a spring piece;

In the figure: coil groove 2, pulley 3, rivet 4, spring piece 5, gap spacer 6, flat washer 7, screw 8, spring washer 9, magnet ring 10, permanent magnet 11, active disk 12, upper cover 13 Friction disc holder 14, friction disc 16, pulley electromagnetic chuck 17, screw 18, gap washer 2, bearing 20, solenoid 21, water seal 22, spindle 23, water pump housing 24.

detailed description

The invention will be further elucidated below with reference to the accompanying drawings.

As shown in the accompanying drawings, a fail-safe electric control water pump according to the present invention comprises: a pulley 3, an upper cover 13, a bearing 20, a water seal 22, a main shaft 23 and a water pump housing 24, said spindle One end of the 23 is connected to the water pump housing 24, the other end of the main shaft 23 extends into the upper cover 13, the upper cover 13 is connected to the pulley 3, and the pulley 3 is connected to the water pump housing 24 via a bearing 20, and the main shaft 23 is provided with water in the radial direction. The seal 22 and the water pump housing 24 further include a driving disc 12, a friction disc 16, a fixing base 14 and an electromagnetic coil 21. The driving disc 12 and the friction disc 16 are pressed by a spring piece 5, and the friction disc 16 is sleeved. The fixing base 14 is sleeved on the main shaft 23, and the electromagnetic coil 21 is disposed in the pulley 3, and the clutch electromagnetic coil 21 is connected to the ECU.

Example

The pulley 3 is driven by the engine, and the pulley 3 drives the driving plate 12 through the screw 18, the rivet 4, the gap spacer 6, the gap spacer 2, and the spring piece 5.

In the case of no power supply, the main shaft 23 drives the fixing base 14 to rotate, the friction disc 16 is sleeved on the fixing base 14, and the driving disc 12 and the friction disc 16 are pressed by the spring piece 6, and the friction disc 16 will follow the driving disc 12 at the same speed. Movement, the friction disc 16 and the driving shaft 12 are coupled by the fixing seat 14, and the driving shaft 12 is fixedly connected with the water pump housing 24, so that the water pump impeller in the water pump housing 24 moves with high speed, and the screw 8 passes through the spring washer 9 and peace. Gasket 7 will belt The wheel 3 is fixed to one side of the drive plate 12.

In the case of energization, the main shaft 23 drives the fixing base 14 to rotate, the friction disc 16 is sleeved on the fixing base 14, and the driving disc 12 moves in the direction of the electromagnetic coil 21 by the electromagnetic force, and the electromagnetic coil 21 is fixed in the coil groove 2. The inner disc 12 is separated from the friction disc 16, and the friction disc 16 does not rotate at high speed with the active disc 12, but the friction disc 16 rotates with the upper cover 13, and the upper cover 13 is fixedly connected with the pulley 3, and the upper cover 13 has The permanent magnet 11 and the magnet ring 10 have a gap of about 1 mm between the permanent magnet 11 and the friction disc 16, and the friction disc 16 follows the rotation of the upper cover 13 by the action of the permanent magnet 11, and the rotation speed is about half of the rotation speed of the pulley 3.

Experimental data

2 is a schematic structural view of the driving disk 12 and the friction disk 16 in a coupled state, the friction disk 16 and the driving disk 12 are pre-compressed, the spring piece 5 is compressed by 1 mm - 1.2 mm, and the gap between the driving disk 12 and the suction surface is 0.3. Mm-0.5mm, static torque 16N.m-20N.m, working voltage range 20-28v.

3 is a schematic structural view of the driving disc 12 and the friction disc 16 in a separated state, the gap between the friction disc 16 and the driving disc 12 is 0.3 mm - 0.5 mm, and the gap between the permanent magnet 11 and the friction disc 16 is 1 mm - 1.5 mm. The gap between the driving plate 12 and the suction surface is 0 mm, and the number of rotations after separation can be changed by adjusting the number of permanent magnets 11.

The above embodiments are merely illustrative of the technical concept and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention. Equivalent transformations or modifications made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

Claims

An anti-failure speed-regulating electric control water pump, comprising: a pulley (3), an upper cover (13), a bearing (20), a water seal (22), a main shaft (23) and a water pump housing (24), One end of the main shaft (23) is connected to the water pump housing (24), the other end of the main shaft (23) extends into the upper cover (13), the upper cover (13) is connected to the pulley (3), and the pulley (3) passes through the bearing ( 20) connected to the water pump housing (24), the radial direction of the main shaft (23) is provided with a water seal (22) and a water pump housing (24), characterized in that it further comprises: a driving disc (12), a fixing seat ( 14), the friction disc (16), the pulley electromagnetic chuck (17) and the electromagnetic coil (21), the active disc (12) and the friction disc (16) are pressed by the spring piece (5), the friction disc (16) Nested on the fixing seat (14), the fixing seat (14) is sleeved on the main shaft (23), the electromagnetic chuck (17) of the pulley is located on the left side of the driving plate (12), and the electromagnetic wave is arranged in the pulley (3) A coil (21), the clutch solenoid (21) is connected to the ECU.
The anti-failure speed-regulating electric control water pump according to claim 1, wherein the rivet (4) passes through the spring piece (5), the gap pad one (6) and the active disk (12) in sequence. And fasten them together.
A fail-safe electric water pump according to claim 1, characterized in that the friction disc (16) and the driving disc (12) are connected by a pre-compacting technique.
The anti-failure speed-regulating electric control water pump according to claim 1, characterized in that the distance between the pressed active disk (12) and the pulley electromagnetic chuck (17) is 0.3 mm-0.5 mm.
The anti-failure speed-regulating electric control water pump according to claim 1, characterized in that: the upper cover (13) is provided with a permanent magnet (11) and a magnet ring (10).
The anti-failure speed-regulating electric control water pump according to claim 5, wherein the gap between the permanent magnet (11) and the friction disc (16) is about 1 mm.
The anti-failure speed-regulating electric control water pump according to claim 1, wherein a water pump impeller is installed in the water pump housing (24).
The anti-failure speed-regulating electric control water pump according to claim 1, wherein the spring piece (5) has a thickness of 1.2 mm and a material of 65 Mn.