Abstract: The power-assisted supercharger (10) includes: a turbocharger (12) in which a turbine (12a) is rotationally driven by exhaust gas (7) from an engine (40), a compressor (12b) rotationally driven by the turbine compresses intake air (5) and supplies the intake air to the engine; an electric motor (14) connected to a rotary shaft (12c) connecting the turbine and the compressor, the electric motor to add rotational force to the turbocharger; and a motor controller (20) to control a drive current (I) to the electric motor required for an assist operation for the turbocharger, by open loop, based on an accelerator opening degree (A) of the engine and a rotational speed (NE) of the engine. In this power-assisted supercharger, a turbo lag can be reduced by itself, power consumption can be small even in a range in which the rotational speed is high, malfunctions or unnecessary power consumption can be prevented, a control system can be simplified, and the installation space and the weight thereof can be small.

Abstract: The power-assisted supercharger (10) includes: a turbocharger (12) in which a turbine (12a) is rotationally driven by exhaust gas (7) from an engine (40), a compressor (12b) rotationally driven by the turbine compresses intake air (5) and supplies the intake air to the engine; an electric motor (14) connected to a rotary shaft (12c) connecting the turbine and the compressor, the electric motor to add rotational force to the turbocharger; and a motor controller (20) to control a drive current (I) to the electric motor required for an assist operation for the turbocharger, by open loop, based on an accelerator opening degree (A) of the engine and a rotational speed (NE) of the engine. In this power-assisted supercharger, a turbo lag can be reduced by itself, power consumption can be small even in a range in which the rotational speed is high, malfunctions or unnecessary power consumption can be prevented, a control system can be simplified, and the installation space and the weight thereof can be small.

Abstract: Out of combinations of three pins(15) and bushes(16a-16c), a clearance between one of the bushes(16a) and the pin(15) is small, and a clearance between the other two bushes(16b,16c) and the pins(15) are large, whereby torque transmission is always performed by only one pin(15) and the bush(16a) during rotation to avoid a transfer phenomenon between the pins. Disposing the pins and the bushes at an equal interval allows a good balance of rotation to provide an easy assembly.

Abstract: Out of combinations of three pins(15) and bushes(16a-16c), a clearance between one of the bushes(16a) and the pin(15) is small, and a clearance between the other two bushes(16b,16c) and the pins(15) are large, whereby torque transmission is always performed by only one pin(15) and the bush(16a) during rotation to avoid a transfer phenomenon between the pins. Disposing the pins and the bushes at an equal interval allows a good balance of rotation to provide an easy assembly.