Patent ID: 8087401
Filing Date: 2012-01-03
Classification: F02B

Abstract:
1. An automotive supercharging apparatus comprising: an engine; an electric motor-generator that has a generating function and an electric motor function; a compressor that is disposed on intake piping of said engine; a power transmitting means that transmits driving torque from a crank shaft of said engine to a rotating shaft of said electric motor-generator; a speed increasing mechanism that transmits driving torque from said rotating shaft of said electric motor-generator to a turbine shaft of said compressor at a predetermined speed increasing ratio; a battery; an inverter that converts electric power between alternating-current and direct-current between said electric motor-generator and said battery; and a controlling means that controls said inverter, wherein: said power transmitting means comprises: said one-way clutch pulley is configured such that said crank shaft of said engine and said rotating shaft of said electric motor-generator operate in a disengaged state relative to each other when said driving torque from said rotating shaft of said electric motor-generator is greater than a load torque on said turbine shaft of said compressor, and said crank shaft of said engine and said rotating shaft of said electric motor-generator operate in an engaged state relative to each other when said driving torque from said rotating shaft of said electric motor-generator is less than said load torque on said turbine shaft of said compressor; and said controlling means controls said inverter so as to drive said electric motor-generator as an electric motor and drive said compressor by said electric motor-generator if engine speed is less than or equal to a predetermined value, wherein said controlling means operates an intake throttle valve in an opening direction and operates said electric motor-generator as a generator if vehicle acceleration is completed and a reduction in accelerator operation is detected.