| 摘要 |
PURPOSE:To properly correct intake air temperature for controlling fuel injection quantity by providing a throttle guide upper stream side of the throttle body in the upper stream side of the surge tank of an engine intake manifold, arranging a unburnt gas supply pipe above a guide intake air passage facing downward, and arranging an intake air temperature sensor facing to the guide intake air passage. CONSTITUTION:A single throttle body 80 is mounted on a surge tank 60 through a spacer 78, and a cylindrical throttle guide 82 is mounted on the single throttle body 80. A pipe 114 for taking blow-by gas comprising unburnt gas generate in an engine 14 and vaporized gas intake pipe 116 are provided. Both of these gas intake pipes 114 and 116 arranged above a throttle guide passage 86 facing downward. An intake air temperature sensor 128 is mounted on the throttle guide 82 through a mounting boss section 126 provided facing to the guide intake air passage 86 to detect intake air temperature, and the detected value is input in a control section. Since intake air is thus introduced into the throttle body, mechanical strength is not required, making it possible to form the throttle guide of flexible material. |
