Subaru Corporation

Seiya Kasami

Taichi Tsuji

A parking lock device includes a parking mechanism, a lock state switching member, a lock-released state keeper, a selector, a vehicle speed detector, a switching controller, and a keeping controller. The switching controller is configured to, when a parking range is selected, stop supplying hydraulic pressure to the lock state switching member, and when a shift range other than the parking range is selected, supply the hydraulic pressure. The keeping controller is configured to, when a shift range other than the parking range is selected and a vehicle speed is equal to or higher than a predetermined speed, supply power to the lock-released state keeper to keep lock of a parking gear released, and when a shift range other than the parking range is selected and when the vehicle speed is lower than the predetermined speed, stop supplying the power to the lock-released state keeper.

Parking lock device

A parking lock device includes a parking mechanism, a lock state switching member, a selector, a gradient detector, a switching controller, and an engine speed controller. The lock state switching member locks a parking gear when supply of hydraulic pressure is stopped. When hydraulic pressure is supplied, the lock state switching member releases the lock of the parking gear. The selector receives operation to select a shift range. The gradient detector detects a gradient of a road surface. When a parking range is selected, the switching controller stops supplying the hydraulic pressure to the lock state switching member. When another shift range is selected, the switching controller supplies the hydraulic pressure to the lock state switching member. When the parking range is selected and the gradient of the road surface is equal to or larger than a predetermined value, the engine speed controller increases an engine speed.

Growing community of inventors

Tokyo, Japan

Seiya Kasami