Intake device for internal combustion engine
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United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
Feb 19, 2004
app pub date -
Jun 9, 2003
filing date -
Jun 7, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An intake device for an internal combustion engine has: a first intake pipe which is connected to the engine so as to conduct an intake air to the engine, and which has an opening portion that is provided in an upstream-side lower portion of the first intake pipe located at an upstream side in a flowing direction of the intake air; and a second intake pipe which has a downstream-side end portion that faces an upstream-side end portion of the first intake pipe, with a gap formed therebetween, and which conducts the intake air to the first intake pipe. An unburned gas reflux passage is provided for conducting an unburned gas from the engine to the first intake pipe. A container surrounds the gap and the opening so as to receive the unburned gas flowing from the opening portion. Thus, it becomes possible to prevent release of unburned gas into the atmosphere by performing a simple process on a conventional structure.
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