TURBOCHARGER

摘要

A turbocharger includes a cooling passage. The cooling passage extends along a diffuser surface. Fluid for cooling the diffuser surface flows through the cooling passage. The turbocharger includes a water jacket, which is arranged at a connection portion between a blow-by gas recirculation passage and an intake passage. Coolant for warming blow-by gas flows through the water jacket. The cooling passage communicates with the water jacket. Coolant that has been drawn into the cooling passage flows through the water jacket after flowing through the cooling passage.

主权项

1. A turbocharger comprising:
a compressor housing member having a compressor chamber; a compressor impeller accommodated in the compressor chamber; an intake port, which communicates with the compressor chamber; a diffuser passage, which communicates with the compressor chamber and has a shape surrounding the compressor chamber; a diffuser surface, which faces the diffuser passage; a cooling passage, which extends along the diffuser surface, wherein a fluid for cooling the diffuser surface flows through the cooling passage; an intake passage, which communicates with the intake port; a blow-by gas recirculation passage for drawing in blow-by gas to the intake passage; and a heating passage, which is provided at a connection portion between the blow-by gas recirculation passage and the intake passage, wherein a fluid for warming the blow-by gas flows through the heating passage, wherein the cooling passage communicates with the heating passage, and the fluid that has been drawn into the cooling passage flows to the heating passage after flowing through the cooling passage.