Driving system of engine water pump

Abstract

The utility model discloses a driving system of an engine water pump, belongs to the technical field of engines, and solves the problems that the working power of the existing mechanical water pump is in direct proportion to the rotating speed of an engine, and the power loss is larger. The driving system of the engine water pump comprises a pneumatic water pump, an air compressor and an air storage tank, the air compressor is installed on an engine or a vehicle, an air inlet pipe is arranged at the output end of the air compressor, the other end of the air inlet pipe is communicated with the air storage tank, and an air outlet pipe communicated with the air storage tank is arranged on the air storage tank. One end of the air outlet pipe is connected with the air storage tank, the other end of the air outlet pipe is connected with the pneumatic water pump, an electric pressure regulating valve is arranged on the air outlet pipe, the air outlet pipe comprises a first branch pipe and a second branch pipe, the two ends of the first branch pipe are connected with the air storage tank and the electric pressure regulating valve respectively, and the two ends of the second branch pipe are connected with the electric pressure regulating valve and the pneumatic water pump respectively. According to the driving system of the engine water pump, power loss is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and more particularly to a driving system for an engine water pump. Background Art

[0002] The main function of the water pump in the engine cooling system is to pressurize the coolant, ensure that the coolant circulates in the cooling system, and ensure that the engine operates within an appropriate temperature range.

[0003] The water pump in an existing engine cooling system is generally driven by a crankshaft belt. The centrifugal force generated by the rotation of the impeller creates a certain pressure, forcing the coolant to flow out of the water outlet or water pipe, ensuring continuous coolant circulation. However, the water pump is connected to the engine through a belt or other means, which makes the installation position of the water pump fixed and easily interferes with the position of other components. In addition, the drive of the water pump depends on the mechanical energy of the engine and is proportional to the engine speed. The power of the water pump cannot be adjusted arbitrarily according to the actual needs of the engine, resulting in a large power loss. Moreover, when the vehicle climbs a long slope to the top of the mountain and immediately shuts down, the antifreeze in the engine body is transferred to the water temperature sensor through heat transfer. Short-term parking will cause the vehicle instrument to easily display a high water temperature fault alarm. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and provide a driving system for an engine water pump, which changes the driving mode of the water pump so that the water pump of the cooling system does not rely on the mechanical energy output by the engine to be driven, and can control the working power of the water pump according to the needs of the engine, thereby effectively reducing power loss.

[0005] The technical solution of the present utility model is as follows: a driving system for an engine water pump, comprising a pneumatic water pump, an air compressor and an air tank, the air compressor being installed on an engine or a vehicle, an air inlet pipe being provided at the output end of the air compressor, the other end of the air inlet pipe being connected to the air tank, an air outlet pipe being provided on the air tank being connected thereto, the other end of the air outlet pipe being connected to the pneumatic water pump, an electric pressure regulating valve being provided on the air outlet pipe, the air outlet pipe comprising a first branch pipe and a second branch pipe, the two ends of the first branch pipe being respectively connected to the air tank and the electric pressure regulating valve, the two ends of the second branch pipe being respectively connected to the electric pressure regulating valve and the pneumatic water pump, the electric pressure regulating valve being electrically connected to the ECU, the second branch pipe being a high temperature and high pressure resistant PVC hose, the output port of the electric pressure regulating valve being provided with a hose connector, the second branch pipe being movably sleeved on the hose connector.

[0006] As a further improvement, the hose connector includes a pipe head and a pipe tail. One end of the pipe head is threadedly connected to the electric pressure regulating valve. The outer wall of the pipe tail is serrated. The outer diameter of the pipe tail is adapted to the inner diameter of the second branch pipe. The second branch pipe is movably sleeved on the pipe tail and locked by a clamp.

[0007] Furthermore, an annular boss is protruding from the outer wall of one end of the tube tail, and the diameter of the annular boss gradually decreases.

[0008] Furthermore, a stop valve is provided on the first branch pipe, and the stop valve is electrically connected to the ECU.

[0009] Furthermore, the inner diameter of one end of the second branch pipe close to the pneumatic water pump is a tapered cavity that gradually decreases along the airflow direction.

[0010] Furthermore, the second branch pipe is provided with a mounting bracket for supporting the second branch pipe, and the mounting bracket includes a limiting ring, a support rod, a base plate, and a locking rod. The limiting ring is installed on the top of the support rod, and the base plate is installed on the bottom of the support rod. The second branch pipe is movably plugged into the limiting ring, and the locking rod is a U-shaped rod. Both ends of the locking rod pass through the base plate and are threadedly connected to the nut.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The utility model provides an engine water pump drive system, which changes the water pump drive mode, so that the cooling system water pump does not rely on the mechanical energy output by the engine to drive, and can control the water pump's work power according to the engine's needs, effectively reducing power loss; when the engine stops working, the pneumatic water pump driven by air pressure can still continue to cool the engine, avoiding fault alarms on the vehicle instrument panel.

[0014] 2. The utility model provides an engine water pump drive system, which changes the connection between the pneumatic water pump and the engine into a soft connection, so that the installation position of the pneumatic water pump is not limited. The water pump can be installed and started according to the actual installation situation of the engine, which can effectively avoid position interference with other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the hose connector in the present invention;

[0017] Figure 3 It is a partial cross-sectional structural diagram of the mounting bracket in the present utility model.

[0018] Among them: 1-pneumatic water pump, 2-air storage tank, 3-air compressor, 4-inlet pipe, 5-outlet pipe, 51-first branch pipe, 52-second branch pipe, 6-electric pressure regulating valve, 7-hose connector, 8-serrated, 9-annular boss, 10-mounting bracket, 101-limiting ring, 102-support rod, 103-base plate, 104-locking rod, 11-stop valve. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0020] See Figure 1-3 A driving system for an engine water pump includes a pneumatic water pump 1, an air compressor 3 and an air tank 2. The air compressor 3 is installed on an engine or vehicle. An air inlet pipe 4 is provided at the output end of the air compressor 3. The other end of the air inlet pipe 4 is connected to the air tank 2. The air tank 2 is provided with an air outlet pipe 5 connected thereto. The other end of the air outlet pipe 5 is connected to the pneumatic water pump 1. An electric pressure regulating valve 6 is provided on the air outlet pipe 5. The air outlet pipe 5 includes a first branch pipe 51 and a second branch pipe 52. The two ends of the first branch pipe 51 are respectively connected to the air tank 2 and the electric pressure regulating valve 6. The two ends of the second branch pipe 52 are respectively connected to the electric pressure regulating valve 6 and the pneumatic water pump 1. The electric pressure regulating valve 6 is electrically connected to the ECU. The second branch pipe 52 is made of high-temperature and high-pressure resistant PVC soft The output port of the electric pressure regulating valve 6 is provided with a hose connector 7, and the second branch pipe 52 is movably sleeved on the hose connector 7; the air tank 2 is connected to the pneumatic water pump 1 through an air hose 92, which changes the driving mode of the water pump, so that the water pump of the cooling system does not rely on the mechanical energy output by the engine to drive, and can control the working power of the water pump according to the needs of the engine, effectively reducing power loss; when the engine stops working, the pneumatic water pump driven by air pressure can still continue to cool the engine, and the pneumatic water pump and the engine are changed to a soft connection, so that the installation position of the pneumatic water pump is not limited, and the water pump can be installed and started according to the actual installation situation of the engine, which can effectively avoid position interference with other components.

[0021] In this embodiment, the hose connector 7 includes a tube head 71 and a tube tail 72. One end of the tube head 71 is threadedly connected to the electric pressure regulating valve 6. The outer wall surface of the tube tail 72 is serrated 8. The outer diameter of the tube tail 72 is adapted to the inner diameter of the second branch pipe 52. The second branch pipe 52 is movably sleeved on the tube tail 72 and locked by a clamp. The second branch pipe 52 is movably plugged into the tube tail 72, which facilitates the replacement of the second branch pipe 52. The outer diameter of the tube tail 72 is adapted to the inner diameter of the second branch pipe 52. The outer diameter of the tube tail 72 and the inner diameter of the second branch pipe 52 are interference fit, which effectively improves the sealing performance between the second branch pipe 52 and the tube tail 72.

[0022] In this embodiment, an annular boss 9 is protruded from the outer wall of one end of the tube tail 72, and the diameter of the annular boss 9 gradually decreases. The diameter of the annular boss 9 gradually decreases from the middle of the tube tail 72 to one end of the tube tail 72. The maximum diameter of the annular boss 9 is greater than the diameter of the inner circle of the second branch pipe 52. When the second branch pipe 52 is sleeved on the tube tail 72, the annular boss 9 limits the second branch pipe 52 and forms a seal with the inner wall of the second branch pipe 52, further enhancing the sealing between the second branch pipe 52 and the hose connector 7.

[0023] In this embodiment, a stop valve 11 is provided on the first branch pipe 51 , and the stop valve 11 is electrically connected to the ECU. When the pneumatic water pump 1 stops working, the ECU controls the stop valve 11 to close, cutting off the air pressure source.

[0024] In this embodiment, the inner diameter of one end of the second branch pipe 52 close to the pneumatic water pump 1 is a conical cavity that gradually decreases along the airflow direction. The gas pressure in the second branch pipe 52 gradually increases as the cavity space in the second branch pipe 52 decreases, thereby increasing the gas pressure in the second branch pipe 52 and effectively improving the efficiency of the pneumatic water pump 1.

[0025] In this embodiment, a mounting bracket 10 for supporting the second branch pipe 52 is provided on the second branch pipe 52. The mounting bracket 10 includes a limiting ring 101, a support rod 102, a bottom plate 103, and a locking rod 104. The limiting ring 101 is installed on the top of the support rod 102, and the bottom plate 103 is installed at the bottom of the support rod 102. The central axis of the support rod 102 coincides with the central axis of the bottom plate 103, ensuring that the second branch pipe 52 located on the limiting ring 102 will not tilt during installation due to uneven force at both ends of the bottom plate 103; the second branch pipe 52 is movable It is movably plugged into the limiting ring 101, the diameter of the limiting ring 101 is larger than the diameter of the second branch pipe 52, and the second branch pipe 52 is movably inserted in the limiting ring 101, which supports the second branch pipe 52; the locking rod 104 is a U-shaped rod, and the two ends of the locking rod 104 pass through the base plate 103 and are threadedly connected with the nut. The locking rod 104 can be clamped on the cooling pipe or the intake pipe in the engine cooling system. By tightening the nuts at both ends of the locking rod 104, the mounting bracket 10 is installed on its pipe, thereby supporting the second branch pipe 52.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A driving system for an engine water pump, characterized in that: The invention comprises a pneumatic water pump (1), an air compressor (3) and an air storage tank (2), wherein the air compressor (3) is installed on an engine or a vehicle, an air inlet pipe (4) is provided at the output end of the air compressor (3), the other end of the air inlet pipe (4) is connected to the air storage tank (2), an air outlet pipe (5) is provided on the air storage tank (2) and is connected thereto, the other end of the air outlet pipe (5) is connected to the pneumatic water pump (1), an electric pressure regulating valve (6) is provided on the air outlet pipe (5), and the air outlet pipe (5) comprises a first branch pipe (51 ) and a second branch pipe (52), the two ends of the first branch pipe (51) are respectively connected to the gas tank (2) and the electric pressure regulating valve (6), the two ends of the second branch pipe (52) are respectively connected to the electric pressure regulating valve (6) and the pneumatic water pump (1), the electric pressure regulating valve (6) is electrically connected to the ECU, the second branch pipe (52) is a high temperature and high pressure resistant PVC hose, the output port of the electric pressure regulating valve (6) is provided with a hose connector (7), and the second branch pipe (52) is movably sleeved on the hose connector (7).

2. The engine water pump drive system according to claim 1, characterized in that: The hose connector (7) comprises a pipe head (71) and a pipe tail (72). One end of the pipe head (71) is threadedly connected to the electric pressure regulating valve (6). The outer wall of the pipe tail (72) is serrated (8). The outer diameter of the pipe tail (72) is adapted to the inner diameter of the second branch pipe (52). The second branch pipe (52) is movably sleeved on the pipe tail (72) and locked by a clamp.

3. The engine water pump drive system according to claim 2, characterized in that: An annular boss (9) is protruding from the outer wall of one end of the tube tail (72), and the diameter of the annular boss (9) gradually decreases.

4. The engine water pump drive system according to claim 1, characterized in that: The first branch pipe (51) is provided with a stop valve (11), and the stop valve (11) is electrically connected to the ECU.

5. The engine water pump drive system according to claim 1, characterized in that: The inner diameter of one end of the second branch pipe (52) close to the pneumatic water pump (1) is a tapered cavity that gradually decreases along the airflow direction.

6. The engine water pump drive system according to claim 1, characterized in that: The second branch pipe (52) is provided with a mounting bracket (10) for supporting the second branch pipe (52), and the mounting bracket (10) includes a limiting ring (101), a support rod (102), a base plate (103), and a locking rod (104). The limiting ring (101) is installed on the top of the support rod (102), and the base plate (103) is installed on the bottom of the support rod (102). The second branch pipe (52) is movably plugged into the limiting ring (101), and the locking rod (104) is a U-shaped rod. Both ends of the locking rod (104) pass through the base plate (103) and are threadedly connected to a nut.

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