Internal-combustion engines – Engine speed regulator – Having plural throttle valve structure
Patent
1999-04-06
2000-10-03
Solis, Erick
Internal-combustion engines
Engine speed regulator
Having plural throttle valve structure
12318453, 12318457, F02D 908
Patent
active
061258202
ABSTRACT:
A silencing arrangement for the induction system of an internal combustion engine particularly as applied to an outboard motor. The engine silencing system includes at least one intake silencing valve that controls the emanation of sounds from the interior of the plenum chamber of the silencing device to the atmosphere. This valve position does not restrict airflow under the controlled positions. The valve can be positioned either in response to engine load as determined by factors such as throttle position or by engine speed.
REFERENCES:
patent: 4539947 (1985-09-01), Sawada et al.
patent: 5596962 (1997-01-01), Tsunoda et al.
patent: 5628287 (1997-05-01), Brackett et al.
patent: 5758614 (1998-06-01), Choi
Sanshin Kogyo Kabushiki Kaisha
Solis Erick
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