Internal combustion engine exhaust line muffler
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United States of America Patent
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N/A
Issued Date -
May 3, 2007
app pub date -
Sep 16, 2004
filing date -
Sep 16, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The internal combustion engine exhaust line muffler includes a casing; as well as, extending inside the casing, in the exhaust gas flow direction, from the upstream part and towards the downstream part of the casing, an exhaust gas intake pipe emerging inside the casing; and an evacuation pipe for the gas emerging into the atmosphere and having an upstream end located inside the casing. The muffler also includes, inside the casing, a device arranged to prevent, at least below a certain specific engine speed, penetration of exhaust gases into the evacuation pipe, through its upstream end; and an evacuation pipe portion provided with at least one perforation for penetration, into the pipe, of the exhaust gases from the intake pipe.
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