Intake system of a multi-cylinder internal combustion engine

Details Intake system of a multi-cylinder internal combustion engine Intake system of a multi-cylinder internal combustion engine

1979-03-21

1981-03-17

Phillips, Charles E.

Internal-combustion engines

Multiple cylinder

F02B 1500

Patent

active

042560632

ABSTRACT:
A multi-cylinder engine comprising an intake manifold forming therein a main and an auxiliary intake passage, which are equipped with a main and an auxiliary carburetor, respectively. A second throttle valve is provided for each cylinder. Each of the secondary throttle valves is arranged in the respective manifold branch forming therein the main intake passage. Each of auxiliary branch intake passages branched off from the auxiliary intake passage opens into the respective intake port at a position near the intake valve. A primary throttle valve is arranged in the auxiliary intake passage and opened in accordance with increase in level of the load of an engine. The secondary throttle valves are opened after the opening degree of the primary throttle valve is increased beyond a predetermined opening degree.

REFERENCES:
patent: 3171395 (1965-03-01), Bartholomew
patent: 3318292 (1967-05-01), Hideg
patent: 3717131 (1973-02-01), Chana et al.
patent: 3809032 (1974-05-01), Morris
patent: 4114572 (1978-09-01), Matsuda et al.

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