Internal combustion engine with altitude compensation device

Details Internal combustion engine with altitude compensation device Internal combustion engine with altitude compensation device

1980-02-21

1981-08-11

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel injection system

123438, 123465, F02P 504

Patent

active

042828406

ABSTRACT:
An altitude compensation device for an internal combustion engine having a vacuum-operated ignition timing advancer and a carburetor has an atmospheric pressure variation responsive valve operative to control the air bleed of the carburetor and the vacuum fed to the vacuum advancer such that, as the atmospheric air pressure is lowered due to increase of the altitude, the air flow into the advancer vacuum chamber is decreased to advance the ignition timing while the air flow into the carburetor air bleed passage is increased to increase the air-fuel ratio of the air-fuel mixture produced by the carburetor.

REFERENCES:
patent: 3828743 (1974-08-01), Ludwig
patent: 3982553 (1976-09-01), Johnston
patent: 4095568 (1978-06-01), Furukawa
patent: 4143630 (1979-03-01), Akman
patent: 4151818 (1979-05-01), Tateno
patent: 4159013 (1979-06-01), Sawada

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