Air intake manifold with sudden enlargement for internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 17, 2004
Grant Date -
Jan 16, 2003
app pub date -
Jul 19, 2002
filing date -
Apr 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns an intake manifold (1) comprising a plenum (8) and air ducts (13) one of which at least, for each combustion chamber of the engine, has a sudden enlargement (19) of its passage cross-section, immediately followed in downstream direction by a duct portion (20) having a gradually decreasing cross-section and ending (21) upstream of a flange fixing (16) the manifold (1) to the engine and its cylinder head. The plenum (8) and each of the air ducts (13) at least are made of synthetic material, preferably capable of being molded. The invention is useful for equipping internal combustion engine with pistons driven in reciprocating movement in the cylinders.
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