Intake system of an internal combustion engine

Details Intake system of an internal combustion engine Intake system of an internal combustion engine

1979-04-03

1982-01-05

Lazarus, Ira S.

Internal-combustion engines

Charge forming device

Injection or carburetion system having a series of throttle...

123 52M, 123336, 123337, 261 41D, 261 65, F02M 718

Patent

active

043088376

ABSTRACT:
An internal combustion engine comprising a carburetor having a throttle valve. A secondary throttle valve is arranged in the intake passage at a position located downstream of the throttle valve of the carburetor. When the engine is operating under a light load, the secondary throttle valve remains fully closed. When the engine is operating under a heavy load, the secondary throttle valve remains fully opened. The intake passage located upstream of the secondary throttle valve is interconnected with the intake passage located downstream of the secondary throttle valve via an auxiliary intake passage having a cross-sectional area which is extremely smaller than that of the intake passage.

REFERENCES:
patent: 1902603 (1933-03-01), Wilson
patent: 2228733 (1941-01-01), Reichhelm
patent: 2436319 (1948-02-01), Meyer
patent: 2473808 (1949-06-01), Mallory
patent: 3171395 (1965-03-01), Bartholomew
patent: 3410539 (1968-11-01), Walker
patent: 3678905 (1972-07-01), Diehl
patent: 4095565 (1978-06-01), Noguchi
patent: 4186706 (1980-02-01), Matsumoto
patent: 4194474 (1980-03-01), Endo

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