KR101506551B1 - Engine assistant system and pump for both water and oil for the system - Google Patents

Abstract

Disclosed is an engine assistant system which can reduce the number of required equipment and complicated electrical wires, and increases the utilization of space of an engine room than a conventional system. The engine assistant system comprises: an engine water pump driven by an engine; an engine oil pump driven by the engine; a transmission oil pump coupled to an output shaft of the engine to provide some oil required for transmission to be operated; a motor to drive a driving shaft in both directions; an auxiliary oil pump coupled to the driving shaft to supply the remaining oil required for transmission during rotation in a first direction; an auxiliary water pump coupled to the driving shaft to circulate a radiator/heater coolant during rotation in a second direction when the engine is not operated; and a motor driving control unit to rotate the driving shaft in the first direction or the second direction in accordance to on/off signals of the engine applied from an ECU.

Description

Technical Field [0001] The present invention relates to an engine assistant system and a water / oil pump for the same,

The present invention relates to an improvement of an engine auxiliary system that enables an engine to operate smoothly, and more particularly, to an improvement of an engine auxiliary system that circulates a radiator / heater part cooling water and supplies oil to a transmission, And a water / oil combined pump required for the same.

As the importance of environmental friendliness and fuel efficiency increases in automobiles, it is necessary to stop the unnecessary engine operation while the vehicle is stopped and restart the engine at the start of operation so as to reduce carbon dioxide generation and fuel consumption. Go technology has been increasingly applied.

In addition, as fuel efficiency and exhaust gas regulations for automobiles are strengthened, development of eco-friendly vehicles using engines and engines in parallel is underway to increase the engine efficiency while reducing the size of conventional engines to improve fuel economy and reduce exhaust gas.

1 is a block diagram showing an engine auxiliary system related to engine cooling and transmission oil supply of an existing conventional automobile without ISG function.

1, an engine 10 is provided with a water pump 12 driven by an engine and an engine oil pump 14 for supplying oil into the engine 10, and a transmission (not shown) 20 is provided with a transmission oil pump 22 that uses the engine 10 as a drive source. The transmission (20) shifts the power of the engine (10) and transmits it to the wheel (30). The transmission oil pump 22 is for supplying oil to the transmission 20.

Existing vehicles without the above ISG function did not need to stop the engine during stop while driving, so a separate air-conditioning radiator / heater part water pump other than the water pump operated by the engine was not needed.

However, due to exhaust gas / fuel economy regulations, vehicles with eco-friendly technologies such as ISG function and HEV (Hybrid electric vehicle) have been developed and released. When the vehicle stops while the vehicle is stopped and the engine is stopped by the ISG function, The mechanical water pump, which was operated by the power of the engine through the pulley, stopped operating. It could not air conditioning through the radiator / heater and could not circulate the cooling water, so the cooling water circulation of the radiator / The water pump operated by the power supply must be installed separately. In addition, the transmission oil pump must be installed separately to supply oil to the transmission when the engine is stopped.

The prior art related to supplying the necessary oil to a transmission in an automobile having an ISG function is disclosed in Patent Registration No. 10-1230837 in which one pump can be driven by an engine and a motor.

In the oil supply system of the conventional vehicle as described above, the transmission oil pump that uses the drive source of the engine is entirely burdened to supply the oil to the transmission when the engine is in operation. This reduces the amount of carbon dioxide generated and improves fuel economy, making it impossible to significantly reduce engine size.

In addition, a cooling pump driven at all times and a drive shaft of a motor-driven oil pump temporarily operating according to conditions are shared and integrated, is disclosed in Patent Registration No. 10-0868615 entitled "Integrated Pump for Hybrid Vehicle, inventor: Dong-Hwan Kim" However, since it is impossible to drive only the transmission oil pump without driving the water pump, the applicability of the transmission oil pump can not be reduced, and a large capacity motor should be used in case the oil pump and the water pump must be driven together There is a problem.

It is an object of the present invention to provide an engine auxiliary system which can reduce the number of necessary equipment and complicated electric wiring than conventional ones, and can improve the space utilization of the engine room.

It is another object of the present invention to provide an engine auxiliary system suitable for application to an engine of a vehicle having an ISG function.

It is a further object of the present invention to provide a single motor that can perform the function of circulating the radiator / heater part cooling water at the time of engine stop by the ISG function and supplying oil to the transmission at the time of engine operation, The present invention provides an engine auxiliary system capable of using a motor having a capacity smaller than that of the conventional one by making use of all of the motor capability.

Still another object of the present invention is to provide a water / oil combined pump suitable for use in an engine auxiliary system according to the present invention.

It is still another object of the present invention to provide a water / oil pump capable of selectively performing an oil pumping function and a water pumping function with one motor.

An engine auxiliary system according to the present invention is an engine auxiliary system having a function of circulating a radiator / heater part cooling water, an engine water pump for cooling the engine driven by the engine and circulating the cooling water, An engine oil pump that is driven by the engine and supplies oil necessary for the engine in operation; A transmission oil pump coupled to an output shaft of the engine to share and supply a part of oil required to the transmission connected to the engine when the engine is in operation; A motor capable of driving the drive shaft in both directions; And a first unidirectional rotary clutch coupled to the drive shaft, wherein when the engine is operating, the drive shaft rotates in the first direction to thereby share the remaining portion of the oil required for the transmission during the engine operation, Auxiliary oil pump for transmission in operation; And a second unidirectional rotary clutch coupled to the drive shaft to operate in a direction opposite to the first unidirectional rotary clutch. When the operation of the engine is interrupted by the rotation of the drive shaft in the second direction when the engine is not operated An auxiliary water pump for circulating the radiator / heater part cooling water to the radiator / heater part for circulating the radiator / heater part cooling water; And a motor drive control section for rotationally driving the drive shaft in the first direction or the second direction in accordance with an on / off signal of an engine applied from an ECU for controlling the operation of the engine.

Preferably, the motor drive control unit varies the RPM of the drive shaft according to temperature / pressure information in the transmission applied from the ECU when the engine is in operation.

It is preferable that the transmission oil pump is supplied with more oil supply than the auxiliary oil pump.

More preferably, the transmission oil pump supplies 55 to 75% of the oil required for the transmission in the course of the engine operation, and the auxiliary oil pump supplies the remaining 25 to 45% of the oil.

 Wherein the auxiliary oil pump includes an inner rotor having an inner circumferential surface provided with the first unidirectional rotary clutch and an outer rotor coupled to an outer portion of the inner rotor to pump oil together with the inner rotor, And an oil pump housing for providing a working space for the oil to be pumped and providing a moving path of the pumped oil,

Wherein the auxiliary water pump includes an impeller having an attachment groove formed at an end face thereof to which the second unidirectional rotary clutch is inserted and coupled to the end face of the impeller and having a shaft hole through which the drive shaft passes, An impeller bracket for closing the opening of the mounting groove so as not to fall out of the groove, and a water pump housing surrounding the impeller to provide an operating space for the impeller and provide a path for moving the cooling water.

Wherein the water pump housing has a housing main body to which the impeller bracket is rotatably mounted and a cover having a swirling chamber and being coupled to the housing body to cover the impeller and a path for moving the cooling water, An annular lip seal is coupled between the inner circumferential surface of the water pump housing and an O-ring is provided between the housing main body and the cover and between the housing main body and the housing of the motor.

Wherein the second one-way rotary clutch includes: an outer ring portion fixed to the mounting groove and rotated together with the impeller; an inner ring portion having an inclined groove formed on an outer circumferential surface at a predetermined angle interval and having a hole through which the drive shaft is engaged, And a lock member inserted and being moved along the rotation direction of the inner ring part to lock the outer ring part and the inner ring part together, or to release the locked state.

The motor drive control unit preferably operates the drive shaft at a fixed rpm in a state where the operation of the engine is stopped.

A water / oil combined pump according to the present invention includes: a motor capable of driving a drive shaft in both directions; An oil pump which is provided with a first one-way rotary clutch provided on the drive shaft and operates only when the drive shaft rotates in the first direction; A water pump which is provided with a second one-way rotary clutch installed on the drive shaft and operates only when the drive shaft rotates in a second direction opposite to the first direction; And a motor drive control unit for rotationally driving the drive shaft in a first direction or a second direction.

The oil pump includes an inner rotor having an inner circumferential surface provided with the first unidirectional rotary clutch and an outer rotor coupled to an outer portion of the inner rotor to pump the oil together with the inner rotor and an outer rotor surrounding the outer rotor, And an oil pump housing for providing a working space for the oil to be pumped, wherein the water pump includes: an impeller having a mounting groove in which the second one-way rotary clutch is inserted and engaged, An impeller bracket having a shaft hole passing therethrough and coupled to an end surface of the impeller and closing the opening of the mounting groove so that the second one-way rotary clutch does not come off the mounting groove; and an operating space of the impeller is provided by surrounding the impeller Equipped with a water pump housing that provides the path of the cooling water Be configured are preferred.

Wherein the water pump housing has a housing main body to which the impeller bracket is rotatably mounted and a cover having a swirling chamber and being coupled to the housing body to cover the impeller and a path for moving the cooling water, An annular lip seal is coupled between the inner circumferential surface of the water pump housing and an O-ring is provided between the housing main body and the cover and between the housing main body and the housing of the motor.

Wherein the second one-way rotary clutch includes: an outer ring portion fixed to the mounting groove and rotated together with the impeller; an inner ring portion having an inclined groove formed on an outer circumferential surface at a predetermined angle interval and having a hole through which the drive shaft is engaged, And a lock member which is inserted and moved along the rotation direction of the inner ring part to lock the outer ring part and the inner ring part together and to release the locked state.

According to the present invention, the cooling water of the radiator / heater unit can be circulated when the engine is stopped with one motor, and the oil can be supplied to the transmission when the engine is operating, and at the same time, Therefore, it is possible to use a motor having a capacity smaller than that of the conventional motor, so that the price competitiveness can be increased and the space efficiency and fuel efficiency can be increased.

According to the present invention, since the oil pumping function and the water pumping function can be selectively performed by a single motor, a multifunctional pump can be implemented by one motor, and all of the capacity of the motor can be used for performing each function. A small-capacity motor can create a dual pump with two pump functions.

Space utilization of the engine room according to the present invention can be improved, and complicated electric wiring can be reduced.

1 is a block diagram illustrating an engine auxiliary system related to engine cooling and transmission oil supply of an existing conventional automobile without ISG function;
2 is a block diagram illustrating an engine auxiliary system according to the present invention;
3 is a cross-sectional view for explaining a configuration of a water / oil pump according to the present invention,
Fig. 4 is a left sectional view showing the configuration of the inner rotor and the outer rotor of the oil pump of Fig. 3,
5 is an enlarged cross-sectional view for explaining the configuration of the water pump,
6 is a right side sectional view showing an example of a one-way rotary clutch of a water pump,
7 is a cross-sectional view showing parts of the water pump separately.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing an engine auxiliary system according to the present invention.

2, the engine 110 of the vehicle and the transmission 120 are shown. The rotational power of the engine 110 is transmitted to the wheel 130 via the transmission 120. [ The engine 110 is connected to a radiator / heater unit 140 for cooling the engine through cooling water circulation and for air conditioning such as cooling and heating of the vehicle.

The present invention relates to an engine auxiliary system (100) for enabling an engine (110) and a transmission (120) of a vehicle to operate smoothly. The engine auxiliary system (100) circulates engine cooling water and circulates heated cooling water through a radiator / heater To enable the engine 110 and the transmission 120 to smoothly operate by supplying the oil to the engine 110 and the transmission 120 while allowing the engine 110 and the transmission 120 to cool, will be.

An engine auxiliary system (100) according to the present invention is equipped with an engine water pump (112) installed in an engine (110). The engine water pump 112 is driven by the engine 110 and serves to circulate the engine cooling water during the operation of the engine 110 so as to cool the engine 110 in operation and to utilize the engine 110 for cooling and heating .

The engine 110 is provided with an engine oil pump 114. This engine oil pump 114 is operated by the engine 110 and serves to supply the necessary oil to the engine 110 when the engine 110 is operating.

The engine auxiliary system 100 according to the present invention is equipped with a transmission oil pump 122. This transmission oil pump 122 is driven by being coupled to the output shaft of the engine 110 and is for sharing and supplying a part of the necessary oil to the transmission 120 connected to the engine 110 during the operation of the engine 110. This transmission oil pump 122 supplies about 55 to 75%, preferably about 60 to 70%, of the required oil to the transmission 120 in a divided manner.

An engine auxiliary system (100) according to the present invention is equipped with a water / oil pump (200). The water / oil combined pump 200 selectively performs a water pump function and an oil pump function with one motor 210. The water / oil pump 200 includes a motor 210 having a power source such as a battery 250 as a driving source, An auxiliary oil pump 220a for a transmission operating when the engine is running and an auxiliary water pump 230a for circulating the cooling water of the radiator / heater unit 140 when the engine is stopped.

As the motor 210, a bidirectional drive motor capable of driving the drive shaft in both directions is used. The auxiliary oil pump 220a operates when the motor 210 is rotationally driven in the first direction to share and supply the remaining part of the oil required for the transmission 120 during the operation of the engine 110, 230a operate when the motor 210 is rotationally driven in the second direction opposite to the first direction so that the cooling water of the radiator / heater unit 140 is circulated when the operation of the engine 110 is interrupted, So that it can be utilized. The configuration of the water / oil pump 200 will be described later in more detail.

The engine auxiliary system 100 according to the present invention is equipped with a motor drive control unit 240 for controlling the driving of the motor 210. [ The motor drive control unit 240 receives on / off information of the engine 110 on whether or not the engine 110 is operating from the ECU 260 that controls the operation of the engine 110, Receives temperature / pressure information via a CAN (Controller Area Network), and controls power supplied to the motor 210 according to the received information to control driving of the motor 210. [ It goes without saying that a thermometer and a pressure gauge must be installed in the transmission 120 in order to obtain temperature / pressure information inside the transmission.

That is, when the engine 110 is operating, the motor drive control unit 240 drives the motor 210 in the first direction and preferably increases the drive speed of the drive shaft according to the temperature / pressure information inside the transmission 120 Or decreases. For example, when the temperature / pressure inside the transmission 120 is higher than the predetermined value, the driving speed of the motor 210 is reduced. If the temperature / pressure is lower, the driving speed is increased to decrease the amount of oil supplied to the transmission 120 per unit time .

When the engine 110 is stopped, the motor drive control unit 240 drives the motor 210 in the second direction upon receiving the stop signal of the engine 110 from the power source 260. The operation of the auxiliary oil pump 220a is stopped and the auxiliary water pump 230a is operated to circulate the cooling water of the radiator / heater unit 140. [ When the motor 210 is driven in the second direction, the motor 210 is preferably driven at a constant rpm. The motor drive control unit 240 may control the drive speed of the drive shaft in the second direction to increase or decrease in accordance with the temperature / pressure information in the engine 110 applied from the DCE 260 .

That is, the engine auxiliary system 100 according to the present invention can effectively solve both the problem of circulation of cooling water in the radiator / heater unit at the time of engine stop and the burden imposed on the engine according to the supply of oil to the transmission at the time of engine operation.

FIG. 3 is a cross-sectional view for explaining the configuration of a water / oil pump according to the present invention, FIG. 4 is a left side sectional view showing the configuration of an inner rotor and an outer rotor of the oil pump of FIG. 3, Fig. 6 is a right side sectional view showing an example of a one-way rotary clutch of the water pump, and Fig. 7 is a sectional view showing separated parts of the water pump.

3, the water / oil pump 200 according to the present invention is equipped with a motor 210 that can rotationally drive the drive shaft 212 in both directions. The drive shaft 212 is coupled to the rotor 214. A stator 216 is installed around the rotor 214 and the motor case 218 surrounds the stator 216 outside the stator 216.

3 and 4, the oil pump 220 coupled to one side of the drive shaft 212 includes a first unidirectional rotary clutch 221 coupled to the drive shaft 212, a first unidirectional rotary clutch 221 disposed on the inner peripheral surface thereof, And an inner rotor 222 in which the inner rotor 222 is installed. The first unidirectional rotary clutch 221 has an inclined groove member 221a formed with an inclined groove at an interval of a predetermined angle on the outer circumferential surface thereof and having a hole through which the drive shaft 212 is engaged at the center thereof and an inclined groove member 221a inserted into the inclined groove, The inner rotor 222 is pinched between the inner rotor 222 and the inclined groove member 221a while being moved in accordance with the rotation direction of the inner rotor 222 and the inner rotor 222 is rotated together with the inclined groove member 221a, And a locking member 221b for preventing rotation. Here, a pin or a ball is preferably used as the lock member 221b.

It is needless to say that other unidirectional rotary clutches different from those shown in Fig. 4 can be used. On the outer peripheral surface of the inner rotor 222 and the inner peripheral surface of the outer rotor 223, recessed and recessed grooves for oil pumping are formed.

 An outer rotor 223 for pumping oil together with an inner rotor 222 is coupled to the outside of the inner rotor 222. And an oil pump housing 225 which surrounds the outer rotor 223 to the outside of the outer rotor 223 and provides a working space for the inner rotor 222 and the outer rotor 223 and provides a moving path 224 of oil to be pumped, ) Is installed. The housing 225 is fixed to the case 218 of the motor 210. The oil pump 220 is driven by the rotation of the drive shaft 212 in the first direction, such as when the engine 110 is operating as shown in FIG. 2, It is well suited to supply a portion of it. This oil pump 220 serves as an auxiliary oil pump in the system shown in Fig.

3, 5 and 7, the water pump 230 coupled to the other side of the drive shaft 212 includes a second unidirectional rotary clutch 231 which operates in reverse to the first unidirectional rotary clutch 221, A mounting groove 232a into which the two one-way rotary clutch 231 is inserted is coupled to an end face of the impeller 232 with a shaft hole through which the driving shaft 212 passes, The impeller 232 surrounding the impeller bracket 233 and the impeller bracket 233 that blocks the opening of the mounting groove 232a so that the rotary clutch 231 does not come out of the mounting groove 232a provides an operating space for the impeller 232, And a water pump housing 235 providing a path.

6, the second one-way rotary clutch 231 includes an outer race portion 231a which is fixed to the mounting groove 232a and rotates together with the impeller 232, and an inclined groove 231b A lock that is inserted into the formed inner ring portion 231c and the inclined groove 231b to lock the outer ring portion 231a and the inner ring portion 231c while moving along the rotation direction of the inner ring portion 231c, And a member 231d. A pin or a ball is preferably used as the lock member 231d. And the drive shaft 212 is engaged with the center hole 231e of the inner ring portion 231c. The height of the inner ring portion 231c is lower than the height of the outer ring portion 231a so that the outer ring portion 231a is pressed from both sides by the impeller bracket 233 and the impeller 232, To be fixed. The inner ring portion 231c can be smoothly rotated with the drive shaft 212 while the outer ring portion 231a is fixedly fitted into the mounting groove 232a while the impeller 232 and the impeller bracket 233 are fixed It can be fixed also by bolt coupling, so that double fixing effect can be obtained.

The water pump 230 functions to circulate the radiator / heater part cooling water when the operation of the engine is stopped by the rotation of the driving shaft 212 in the second direction when the engine is not operated. This water pump 230 serves as an auxiliary water pump in the engine auxiliary system 100 shown in Fig.

The impeller bracket 233 is fixed to the end face of the impeller 232 through the bolt B. [ The impeller bracket 233 has a hollow shaft portion 233a protruding toward the motor 210 at the center and allowing the drive shaft 212 to rotate freely. The lip chamber LS is mounted on the outer peripheral surface of the hollow shaft portion 233a.

The water pump housing 235 preferably has a housing main body 235a in which the impeller bracket 233 is rotatably mounted and a swirling chamber and is coupled to the housing main body 235a to cover the impeller 232, And a cover 235b formed thereon.

The housing main body 235a is provided with a pair of O-ring engagement portions 236a formed on the outer peripheral surface of the outer peripheral portion 236 at intervals. One of the two O-ring coupling portions 236a is for coupling the O-ring OR provided between the cover 235b and the other one is for coupling the O-ring OR installed between the motor casing 218 and the O- . The housing main body 235a extends inwardly from one end of the outer portion 236 to provide an installation space for the impeller 232, the impeller bracket 233 and the lip seal LS, And an impeller mounting portion 237 having a through hole for allowing passage and rotation of the hollow shaft portion 233a. A lip seal mounting portion 238 is formed adjacent to the through hole.

The lip chamber LS has an annular shape and is coupled between the outer circumferential surface of the impeller bracket 233 and the water pump housing 235 in a state of being mounted on the lip seal mounting portion 238. More specifically, the lip chamber LS allows water to flow toward the motor 210 while permitting the rotation of the impeller bracket 233 in a state of being in close contact with the outer circumferential surface of the hollow shaft portion 233a of the impeller bracket 233 and the inner circumferential surface of the lip seal mounting portion 238 It blocks the inflow.

  O rings OR are provided between the housing main body 235a and the cover 235b and between the housing main body 235a and the case 218 of the motor so that water on the side of the water pump 230 flows into the motor 210 It blocks things. Preferably, an O-ring (OR) is also provided between the impeller 232 and the impeller bracket 233.

The present invention is most preferably used to smoothly operate the engine and the transmission of the vehicle having the IGS function while smoothly performing the vehicle air conditioning even when the engine is stopped. In addition, the present invention can be used where it is necessary to selectively pump water and oil according to the operating conditions and conditions of the device.

100: engine auxiliary system 110: engine
112: engine water pump 114: engine oil pump
120: Transmission 122: Transmission oil pump
140: radiator / heater unit 200: water / oil pump
210: motor 220: oil pump
220a: auxiliary oil pump 221: first one-way rotary clutch
230: water pump 230a: auxiliary water pump
231: second one-way rotary clutch 232: impeller
232a: mounting groove 233: impeller bracket
233a: hollow shaft portion 238: lip seal mounting portion
240: motor drive control unit 250: battery
260: LS Yoo LS: Lipstick

Claims (12)

In the engine auxiliary system having the function of circulating the radiator / heater part cooling water,
An engine water pump driven by the engine and circulating the cooling water to cool the engine while being driven;
An engine oil pump that is driven by the engine and supplies oil necessary for the engine in operation;
A transmission oil pump coupled to an output shaft of the engine to share and supply a part of oil required to the transmission connected to the engine when the engine is in operation;
A motor capable of driving the drive shaft in both directions;
And a first unidirectional rotary clutch coupled to the drive shaft, wherein when the engine is operating, the drive shaft rotates in the first direction to thereby share the remaining portion of the oil required for the transmission during the engine operation, Auxiliary oil pump for transmission in operation;
And a second unidirectional rotary clutch coupled to the drive shaft to operate in a direction opposite to the first unidirectional rotary clutch. When the operation of the engine is interrupted by the rotation of the drive shaft in the second direction when the engine is not operated An auxiliary water pump for circulating the radiator / heater part cooling water to the radiator / heater part for circulating the radiator / heater part cooling water; And
And a motor drive control section for rotationally driving the drive shaft in the first direction or the second direction in accordance with an on / off signal of an engine applied from an ECU that controls the operation of the engine. The engine auxiliary system according to claim 1, wherein, when the engine is in operation, the motor drive control unit varies the RPM of the drive shaft according to temperature / pressure information in the transmission applied from the ECU. The engine auxiliary system according to claim 1, wherein the transmission oil pump is supplied with more oil supply than the auxiliary oil pump. The transmission as claimed in claim 3, wherein the transmission oil pump supplies 55 to 75% of the oil required for the transmission when the engine is in operation, and the auxiliary oil pump supplies the remaining 25 to 45% Auxiliary system. [2] The air conditioner of claim 1, wherein the auxiliary oil pump includes: an inner rotor having an inner circumferential surface provided with the first unidirectional rotary clutch; an outer rotor coupled to the outer rotor and pumping oil together with the inner rotor; And an oil pump housing for providing a working space of the rotor and the outer rotor and providing a path for the oil to be pumped,
Wherein the auxiliary water pump includes an impeller having an attachment groove formed at an end face thereof to which the second unidirectional rotary clutch is inserted and coupled to the end face of the impeller and having a shaft hole through which the drive shaft passes, An impeller bracket for closing an opening of the mounting groove so as not to fall out of the groove, and a water pump housing surrounding the impeller to provide an operating space of the impeller and provide a path for moving the cooling water. The water pump housing according to claim 5, wherein the water pump housing has a housing main body to which the impeller bracket is rotatably mounted, a cover having a swirling chamber and being coupled to the housing main body to cover the impeller,
An annular lip seal is coupled between the outer circumferential surface of the impeller bracket and the inner circumferential surface of the water pump housing and O-rings are provided between the housing main body and the cover and between the housing main body and the housing of the motor. Engine auxiliary system. The motorcycle according to claim 5, wherein the second one-way rotary clutch comprises: an outer ring portion fixed to the mounting groove and rotated together with the impeller; an inner ring portion having an inclined groove formed at an outer circumferential surface at a predetermined angle interval, And a lock member inserted in the inclined groove and moving along the rotation direction of the inner ring part to lock the outer ring part and the inner ring part together, or to release the locked state. The engine auxiliary system according to claim 2, wherein the motor drive control unit operates the drive shaft at a fixed rpm in a state where the operation of the engine is stopped. delete A motor capable of driving the drive shaft in both directions;
An oil pump which is provided with a first one-way rotary clutch provided on the drive shaft and operates only when the drive shaft rotates in the first direction;
A water pump which is provided with a second one-way rotary clutch installed on the drive shaft and operates only when the drive shaft rotates in a second direction opposite to the first direction; And
And a motor drive control section for rotationally driving the drive shaft in a first direction or a second direction,
The oil pump includes:
An inner rotor provided on the inner circumferential surface of the inner rotor with the first unidirectional rotary clutch installed therein and an outer rotor coupled to the outer rotor to pump the oil together with the inner rotor, and an outer rotor surrounding the outer rotor, And an oil pump housing for providing a path of movement of the oil to be pumped,
Wherein the water pump includes an impeller having an attachment groove formed at an end face thereof to which the second unidirectional rotary clutch is inserted and coupled with the end face of the impeller and having a shaft hole through which the drive shaft passes, And a water pump housing for enclosing the impeller to provide an operating space of the impeller and to provide a path for moving the cooling water. The water pump housing according to claim 10, wherein the water pump housing has a housing main body in which the impeller bracket is rotatably mounted, a cover having a swirling chamber and being coupled to the housing main body to cover the impeller,
An annular lip seal is coupled between the outer circumferential surface of the impeller bracket and the inner circumferential surface of the water pump housing and O-rings are provided between the housing main body and the cover and between the housing main body and the housing of the motor. Water / oil pump. The motorcycle according to claim 10, wherein the second one-way rotary clutch includes: an outer ring portion fixed to the mounting groove and rotated together with the impeller; an inner ring portion having an inclined groove formed at an outer circumferential surface at a predetermined angle interval, And a lock member inserted in the inclined groove and moving along the rotation direction of the inner ring part to lock the outer ring part and the inner ring part together, or release the lock state.

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