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AssigneesHitachi, Ltd., Hitachi Car Engineering Co., Ltd.
InventorsKiyoshi Amou, Yoshio Okamoto, Yuzo Kadomukai, Takehiko Kowatari, Ayumu Miyajima, Masami Nagano, Takanobu Ichihara, Hiroaki Saeki, Tadashi Someno
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A main passage mounting a throttle valve and an air bypass flow passage for reducing HC emission by promoting atomization of the fuel spray injected from the assembly pipe fuel injector are integrated in a body of an intake air control device arranged upstream of an assembly pipe in a one-piece structure to form a unit. Thereby, the intake air control device can be easily manufactured and easily mounted on and dismounted from the intake air system. The amount of HC emitted during warming-up operation of an internal combustion engine is reduced by efficiently supplying fuel spray injected from an assembly pipe fuel injector at the time of starting and warming-up operations for the internal combustion engine.
An intake air control device comprising a body having a main flow passage for supplying air to cylinders of an internal combustion engine and a throttle valve for controlling an air flow rate arranged inside said main flow passage;
An intake air control device comprising a body having a main flow passage for supplying air to cylinders of an internal combustion engine and a throttle valve for controlling an air flow rate arranged inside said main flow passage;
An intake air control device comprising a body having a main flow passage for supplying air to cylinders of an internal combustion engine and a throttle valve for controlling an air flow rate arranged inside said main flow passage;
An intake air control device comprising a body having a main flow passage for supplying air to cylinders of an internal combustion engine and a throttle valve for controlling an air flow rate arranged inside said main flow passage;
Dependencies are inferred from the claim text.