| 摘要 |
PROBLEM TO BE SOLVED: To make variable a hydraulic fluid quantity discharged from an oil pump device with a simple configuration.SOLUTION: An oil pump device comprises: an engagement clutch 52 controlled into an engaged state of braking a sun gear S and a disengaged state of releasing the sun gear S; a one-way clutch 53 controlled into an engaged state of causing two rotating elements out of the sun gear S, a carrier C, and a ring gear R to constrain each other and a disengaged state of cancelling constraint of the two rotating elements; and a hydraulic actuator 51 controlling the engagement clutch 52 and the one-way clutch 53 on the basis of a line pressure, the sun gear S and the ring gear R being disposed on two ends on an alignment chart, respectively, an engine being coupled to the carrier C, an inner rotor 42 being coupled to the ring gear R, and the hydraulic actuator 51 disengaging the engagement clutch 52 and engaging the one-way clutch 53 if the line pressure is equal to a first hydraulic pressure, and engaging the engagement clutch 52 and disengaging the one-way clutch 53 if the line pressure is equal to a second hydraulic pressure higher than the first hydraulic pressure.SELECTED DRAWING: Figure 2 |
