Apparatus for controlling the ratio of air to fuel quantity in i

Details Apparatus for controlling the ratio of air to fuel quantity in i Apparatus for controlling the ratio of air to fuel quantity in i

1980-02-29

1981-12-22

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123568, F02M 2506

Patent

active

043065341

ABSTRACT:
An apparatus is proposed which serves to control the ratio of air to fuel quantity of the operational mixture to be introduced into the combustion chambers of an internal combustion engine. The actual fuel quantity supplied via an injection apparatus (2) and the actual air quantity supplied via the intake manifold of the engine are measured and processed in a control apparatus (21) into a correction adjusting variable. The apparatus further functions with exhaust recirculation, with the aspirated fresh air quantity being dosed and the remnant filling of the gaseous filling introduced into the combustion chambers of the engine is replaced by recirculated exhaust gas. For the purpose of dosing the fresh air, a symmetrical throttle valve (14) is disposed in the intake manifold, whose position is transferred by means of pneumatic servomotor (23) to a second throttle device (12, 32), by means of which finally the quantity of the recirculated exhaust gas is determined.

REFERENCES:
patent: 4100891 (1978-07-01), Williams
patent: 4157081 (1979-06-01), Wake et al.
patent: 4208995 (1980-06-01), Simko et al.
patent: 4257381 (1981-03-01), Yuzawa et al.

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