Internal-combustion engines – Multiple cylinder
Patent
1987-08-03
1988-07-26
Myhre, Charles J.
Internal-combustion engines
Multiple cylinder
123 52MB, F02B 7518
Patent
active
047593202
ABSTRACT:
The present invention relates to an intake device for an internal combustion engine mounted on motorcycles or other various vehicles. The intake device comprises an air flow resistance adjusting mechanism for adjusting the air flow resistance in an intake passage in linkage with a variable intake pipe length mechanism to provide an excellent optimum air/fuel ratio over the entire speed range of the internal combustion engine. The variable intake pipe length mehcanism comprises a stationary intake pipe connected to a carburetor, a guide pipe separated from the stationary intake pipe, and a movable intake pipe slidably mounted on the guide pipe so tat the movable intake pipe is capable of coming in contact with or being spaced from the stationary intake pipe in response to the engine revolving speed. The movable intake pipe is connected to the stationary intake pipe below the predetermined engine speed and separated from it above the predetermined engine speed. The air flow resistance adjusting mechanism comprises a case adapted to enclose the stationary intake pipe, the movable intake pipe and the guide pipe, and having an intake passage communicating with the atmosphere and a mechanism for varying the air flow resistance of the intake passage in response to the switching motion of the movable intake pipe.
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Fujii Takaaki
Miura Seishi
Tsukui Takaaki
Honda Giken Kogyo Kabushiki Kaisha
Myhre Charles J.
Okonsky David A.
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