To provide a supercharging system capable of avoiding a surge of a compressor, recovering energy, and assisting supercharging in acceleration.
This supercharging system has a turbocharger 6 for operating a turbine 3 by exhaust gas G sent out of an engine 1 and feeding intake air A compressed by the compressor 4 to the engine 1, a recirculation pipe 8 reaching an air suction port from an air delivery port of the compressor 4, a flow regulating valve 9 incorporated into the recirculation pipe 8, a motor-driven supercharger 10 having the power generation function, and a control unit 11 for operating the motor-driven supercharger 10 when an actual intake quantity is insufficient and making the most of the power generation function of the motor-driven supercharger 10 before an operation state of the compressor 4 enters a surge area. Particularly in full load operation of a low rotating speed area, the surge is avoided by the recirculation pipe 8, and the energy of the intake air A is recovered by the power generation function of the motor-driven supercharger 10.
COPYRIGHT: (C)2007,JPO&INPIT
Yukihiro Tsuji
Hiroaki Kawahara
| JP2003097298A | ||||
| JP2005214153A | ||||
| JP2005256651A | ||||
| JP2004278430A |
| US5577385 |
Seiichi Otsuka