| 摘要 |
PURPOSE:To make it possible to use the turbocharger in the titled in a highland place and to obtain the high operating efficiency, by varying a slant angle of a guide vane provided at a compressor entrance side of the turbocharger according to an engine speed and load. CONSTITUTION:A turbocharger 10 is composed of a turbine 12 driven by exhaust gas and compressor 14 rotated by said turbine 12, and the compressor 14 is provided with a guide vane 16 at the entrance side thereof. In this arrangement, the guide vane 16 varies the slant angle by means of a driving control means 26 to which, respective output signals of a displacement gage 24 acting as an engine load detection means for detecting the rack positions of an engine tachometer 22 and fuel injection pump, are inputted. And the slant angle of the guide vane 16 is variably controlled in order to determine a fluid inlet angle of an impeller 14a in the compressor 14 so that an engine actuating range may not approach a surge line and said range can have a good operating efficiency.
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