Engine intake system
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United States of America Patent
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Apr 10, 2012
Grant Date -
Aug 6, 2009
app pub date -
Jan 14, 2009
filing date -
Jan 31, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
In an engine intake system, an air cleaner and downstream sides of throttle valves in throttle bodies provided in intake passages are connected by bypass passages. An idle speed control apparatus provided at a midpoint of the passage controls amounts of air supplied during an idling operation. End portions of the bypass passages connected to the throttle bodies are located in higher positions than end portions of the bypass passages connected to the air cleaner so that the bypass passages are inclined downward toward the air cleaner. As a result, water is prevented from blocking the bypass passages via a simple structure.
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