Method of Using a Bypass Valve

摘要

A method of controlling a pump (43), including operating an engine (23) having an engine intake (49) coupled to a pump output (51) of a pump, and a transmission (41) coupled to the engine and to the pump, and operating a valve (58) between a pump input of the pump and the engine intake, such that the valve can be opened during a ratio change of the transmission.

主权项

1. A method, comprising:
operating an engine having an engine intake manifold coupled to a pump output of a pump, wherein a transmission is coupled to the engine and to the pump; and operating a valve arranged between a pump input of the pump and the engine intake manifold such that the valve can be opened before or during a ratio change of the transmission, wherein operating the engine causes the pump to increase pressure at a point along a flow path between the pump output and the engine intake manifold, and wherein operating the valve comprises:
opening the valve to decrease the pressure at the point along the flow path between the pump output and the engine intake manifold before or during the ratio change to change a shift torque exerted on the transmission; andclosing the valve after the ratio change.