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OwnerYasuhiko Hattori, Takayoshi Amano +2inventors
InventorsYasuhiko Hattori, Takayoshi Amano, Koichi Shimizu, Satoshi Uematsu
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A throttle valve (12) is provided in an intake air passage (11) of a throttle body (10) and serves to control the air flows rate that is supplied into a combustion chamber of an internal combustion engine. A valve housing (21) is joined to the throttle body (10). A communication passage (22) is formed in the valve housing (21). A branching side passage (13a) and a joining side passage (13b) are formed in the throttle body 10 and, together with the communication passage (22) in the valve housing (21), form a bypass structure (13) that bypass the throttle valve (12). A valve seat portion (23) is formed on the valve housing (21) in the communication passage (22). A valve (25) is provided in the valve housing (21) and serves to control the opening area of the valve seat portion (23). A lattice (50) is disposed downstream of the valve seat portion (23) in the bypass structure (13). The lattice (50) may be replaced with other structures adapted to reduce or prevent turbulent airflow downstream of the valve seat portion (23). Preferably, such structure generates a laminar airflow.
An apparatus adapted to bypass a throttle valve and supply air to an internal combustion engine while the engine is idling, comprising:
An idle speed control device adapted to bypass a throttle valve and supply air to an internal combustion engine, comprising:
An idle speed control device having a bypass structure adapted to bypass a throule valve, which throttle valve is provided in an intake air passage through which air is supplied into a combustion chamber of an internal combustion engine, a valve seat portion provided in the bypass structure, and a valve for controlling an opening area of the valve seat portion, wherein:
Dependencies are inferred from the claim text.