| 摘要 |
PURPOSE:To generate negative pressure used for an exhaust gas controller from a turbocharger for an internal combustion engine, by arranging a negative pressure take off port in a compressor housing part of minimum actual flow area in a pressure air passage. CONSTITUTION:A protruding part 38, extensibly provided from a housing 12 to a flow direction, is provided to a part of actually minimum flow area in a pressure air passage 36 formed by housings 11, 12 in the downstream side of a compressor wheel 18. A negative pressure take off port 39 is provided to the housing 12 in the inside of said protruding part 38 and connected to a negative pressure tank 42 through a check valve 40. Accordingly, negative pressure is generated in a part 37, where flow speed substantially becomes maximum when pressurized air flows in an outlet 22, and fed to the negative pressure tank 42, then this negative pressure is utilized for a negative pressure operating signal or the like in an exhaust gas controller. |
