A hydraulic switching assembly for a motor vehicle, having a hydraulic pump (1) which guides a hydraulic medium from a reservoir (2) via hydraulic lines (3) and at least one magnetic valve assembly (4) including a magnetically actuatable switching valve (5), to a switching element (6) in order to hydraulically actuate the switching element (6) between two switching positions. A pressure accumulator (7) and a first check valve (8a) are mounted in a supply line (3a) upstream of the switching valve (5) in order to realize a reliable temporary supply of oil pressure to the switching element (6).

A vehicle includes an engine, a transmission, and a controller. The transmission has clutches, a circuit configured to transport fluid to the clutches, a pump configured to circulate the fluid through the circuit, and an accumulator disposed along the circuit. The controller is programmed to, responsive to an engine start and a fluid temperature being less than a temperature threshold, discharge the accumulator to prime the pump.

A vehicle includes an engine, a transmission, and a controller. The transmission has clutches, a circuit configured to transport fluid to the clutches, a pump configured to circulate the fluid through the circuit, and an accumulator disposed along the circuit. The controller is programmed to, responsive to an engine start and a fluid temperature being less than a temperature threshold, discharge the accumulator to prime the pump.

An oil pressure control device is provided with a valve member including: a cylindrical sleeve having a first end part and a second end part opposite thereto; a valve body arranged on the side of the second end part; a movable member arranged in the hollow part on the side of the first end part, housed to be movable along the hollow part, having a pressure receiving surface on the side of the first end part of the cylindrical sleeve to receive an oil pressure, and having a contact part on the side of the second end part to contact the valve body according to the oil pressure on the pressure receiving surface; and a detent member arranged between the valve body and the second end part to limit movement of the valve body towards the side of the second end part within a predetermined range.

Provided is a hydraulic control device having a valve member wherein the valve member includes a cylindrical sleeve including a first end and a second end which is opposite side to the first end, a valve body which is disposed on the second end side of a hollow portion in the cylindrical sleeve and opens and closes an oil path, a movable member which is disposed on the first end side in the hollow portion, movably accommodated along the hollow portion, and includes a pressure receiving surface provided to receive a hydraulic pressure and a contact portion provided to be brought into contact with the valve body according to the hydraulic pressure on the pressure receiving surface, and a movement stopping member which is disposed between the valve body and the second end and limits movement of the valve body toward the first end side within a predetermined range.

A hydraulic switching assembly for a motor vehicle, having a hydraulic pump (1) which guides a hydraulic medium from a reservoir (2) via hydraulic lines (3) and at least one magnetic valve assembly (4) including a magnetically actuatable switching valve (5), to a switching element (6) in order to hydraulically actuate the switching element (6) between two switching positions. A pressure accumulator (7) and a first check valve (8a) are mounted in a supply line (3a) upstream of the switching valve (5) in order to realize a reliable temporary supply of oil pressure to the switching element (6).