Intake system for internal combustion engines

Details Intake system for internal combustion engines Intake system for internal combustion engines

1988-09-09

1989-08-08

Cross, E. Rollins

Internal-combustion engines

Multiple cylinder

123432, 123308, F02B 7518

Patent

active

048542709

ABSTRACT:
An intake system for internal combustion engines, comprising suction pipes of different lengths, which can be connected individually--preferably in accordance with the engine speed--to the intake passage in the cylinder head leading to the intake valve. The main intake pipe is connected to each intake passage by means of a connecting piece, and three suction passages of different lengths departing from the main intake pipe open into this connecting piece either in the direction of its axis or on opposite sides thereof, the connecting piece containing a butterfly control valve which is centrally mounted on a shaft parallel to the longitudinal axis of the engine, and which--in its two extreme positions and in its center position--establishes the flow connection between one of the suction passages and the intake passage.

REFERENCES:
patent: 3177854 (1965-04-01), Garcea
patent: 3491733 (1970-01-01), Soubis
patent: 3814069 (1974-06-01), Croft
patent: 4446823 (1984-05-01), Bessho
patent: 4590895 (1986-05-01), Yada et al.
patent: 4617897 (1986-10-01), Sasaki et al.
patent: 4619226 (1986-10-01), Ueda et al.
patent: 4726329 (1988-02-01), Atkin

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