发明申请
US20170030419A1 CLUTCH HYDRAULIC PRESSURE CONTROL CIRCUIT 审中-公开
离合器液压控制电路

CLUTCH HYDRAULIC PRESSURE CONTROL CIRCUIT
摘要:
A clutch hydraulic pressure control circuit includes: a shift valve for switching the destination to feed hydraulic pressure to a first hydraulic clutch or a second hydraulic clutch; and first and second shift solenoid valves operating synchronously to actuate the shift valve. The two shift solenoid valves include a holding valve for keeping hydraulic pressure fed to the shift valve even when hydraulic pressure supply through one of the first and second shift solenoid valves happens to be shut off while hydraulic pressure is fed through the first and second shift solenoid valves to paths between the shift valve and the shift solenoid valves, or when hydraulic pressure supply through one of the first and second shift solenoid valves happens to occur while no hydraulic pressure is fed through the shift solenoid valves.
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