| 摘要 |
A control system for an hydraulic supercharger system. The control system is specially adapted to control a supercharger system comprising: (A) an hydraulic pump; (B) a supercharger comprising: an hydraulic turbine drive and a compressor driven by the hydraulic turbine drive; (C) a main hydraulic piping means providing a hydraulic circulation loop for hydraulic fluid to flow from said pump, to drive said hydraulic turbine drive, and back to said pump; and (D) a supercharger bypass system comprising a controlled bypass valve and a piping means to permit a portion of said hydraulic fluid to bypass said supercharger turbine drive. The control system includes a solenoid arranged to close and partially or fully open the controlled bypass valve. The solenoid may be controlled by a pressure switch connected to sense hydraulic pressure and to apply a voltage to said solenoid to open or close said valve upon said hydraulic pressure reaching a predetermined value. Since the hydraulic pressure increases with engine speed, it is a simple matter to adjust the control system to provide for the hydraulic fluid to drive the supercharger or to bypass the supercharger at any predetermined ranges of engine speed. The bypass valve may also be controlled based on engine throttle position. In another preferred embodiment where the turbocharger system comprising an air flow check valve which opens when a turbocharger is providing sufficient air to the engine, the bypass valve is also subject to control based on the position of the check valve, so that the hydraulic supercharger can be substantially bypassed when the turbocharger is able provide sufficient air to the engine.
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