Controller for turbocharger

Abstract

Abstract PURPOSE:To economize the electric power and prevent the surging of a compressor by opening a valve in a bypass passage only on the start of flying boost-up and introducing a portion of the compressed air of the compressor of a turbocharger into a turbine. CONSTITUTION:When an engine 1 is in low speed and high load operation, an electric rotary machine 3 installed onto a rotary shaft 23 for connecting the turbine 21 and the compressor 22 of a turbocharger 2 is power-running- operated as electric motor, and the revolution speed of the compressor 22 is increased to assist the supercharge operation. In this case, each bypass pipe 4 is arranged at the inlet of the turbine 21 and the outlet of the compressor 22, and a valve 41 is arranged midway. The valve 41 is opening/closing- controlled by a controller 6 on the basis of each detection signal of the sensors 11 and 61 - 63 for detecting the operation state of the engine. In other words, the valve 41 is opened only in the initial stage of the flying boost-up operation.

Inventors

• 👤 Shinji Hara
• 👤 真治 原

Bibliographic Details