A variable capacity type oil pump, which is driven by an engine, supplies hydraulic pressure to a hydraulic control circuit of an automatic transmission. A range switch mechanism, which includes a motor as a motive power source, switches a shift range of the automatic transmission. Further, a switch
A variable capacity type oil pump, which is driven by an engine, supplies hydraulic pressure to a hydraulic control circuit of an automatic transmission. A range switch mechanism, which includes a motor as a motive power source, switches a shift range of the automatic transmission. Further, a switch operation mechanism, which switches a discharge amount of the oil pump, is driven by the motor of the range switch mechanism. In this case, an operative position of the switch operation mechanism is switched by the motor according to an input rotation speed of the oil pump, thereby switching the discharge amount of the oil pump. Accordingly, the motor of the range switch mechanism is used to drive the switch operation mechanism to switch the discharge amount of the oil pump, and thus a motive power source dedicated to changing the discharge amount of the oil pump is not needed.
대표청구항▼
1. A vehicular hydraulics supply device for a vehicle including a variable-capacity oil pump, the oil pump having a variable discharge amount and being rotatably driven by a vehicle motive power source of the vehicle, the vehicular hydraulics supply device comprising: an electric actuator that acts
1. A vehicular hydraulics supply device for a vehicle including a variable-capacity oil pump, the oil pump having a variable discharge amount and being rotatably driven by a vehicle motive power source of the vehicle, the vehicular hydraulics supply device comprising: an electric actuator that acts as a switching motive power source of a range switch mechanism, the range switch mechanism switching a range of a transmission; anda pump switch mechanism driven by the electric actuator to perform a switch operation for adjusting the discharge amount of the oil pump. 2. The vehicular hydraulics supply device of claim 1, wherein the oil pump supplies hydraulic pressure to a hydraulic control circuit of the transmission. 3. The vehicular hydraulics supply device of claim 1, further comprising: a controller that switches the discharge amount of the oil pump by using the electric actuator to switch an operative position of the pump switch mechanism according to an input rotation speed of the oil pump. 4. The vehicular hydraulics supply device of claim 1, wherein the pump switch mechanism includes a switch valve driven by the electric actuator, andthe switch valve is switched between i) a first operative position that forms an oil passage which supplies hydraulic pressure to a varier unit of the oil pump, and ii) a second operative position that stops supply of hydraulic pressure to the varier unit of the oil pump, so as to switch the discharge amount of the oil pump between two levels. 5. The vehicular hydraulics supply device of claim 4, wherein the electric actuator is a motor,the range switch mechanism includes a detent lever fixed to a manual shaft, the manual shaft being coupled to a rotating shaft of the motor,a manual valve is coupled to the detent lever and is linearly displaced according a rotation of the detent lever, andthe switch valve is disposed so as to integrally move with the manual shaft. 6. The vehicular hydraulics supply device of claim 1, wherein the pump switch mechanism includes a first switch valve driven by the electric actuator,a supply first port and a second supply port which are in fluid communication with a varier unit of the oil pump, anda second switch valve biased by a spring in a direction opening the first supply port, andthe first switch valve is switched between i) a first operative position that maintains the second switch valve at a position opening the first supply port and that forms an oil passage which supplies hydraulic pressure through the first supply port to the varier unit of the oil pump, ii) a second operative position that stops supply of hydraulic pressure to the varier unit of the oil pump, and iii) a third operative position that causes the second switch valve to move to a position closing the first supply port and that forms an oil passage which supplies hydraulic pressure through the second supply port to the varier unit of the oil pump, so as to switch the discharge amount of the oil pump between three levels. 7. The vehicular hydraulics supply device of claim 6, wherein the electric actuator is a motor,the range switch mechanism includes a detent lever fixed to a manual shaft, the manual shaft being coupled to a rotating shaft of the motor,a manual valve is coupled to the detent lever and is linearly displaced according a rotation of the detent lever, andthe first switch valve is disposed so as to integrally move with the manual shaft.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (5)
Reinartz Hans-Dieter (Frankfurt am Main DEX) Steffes Helumut (Hattersheim DEX), ABS pump pressure controls pressure limiting valve and loading valve.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.