Exhaust gas recirculation control system for an internal combust

Details Exhaust gas recirculation control system for an internal combust Exhaust gas recirculation control system for an internal combust

1979-12-27

1981-09-01

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

042865670

ABSTRACT:
An exhaust gas recirculation control system for particular application to a diesel engine, which includes a combination of a fuel injection pump having a movable fuel amount determining element whose position regulates the amount of fuel injected, a conversion device having a fixed orifice and a variable orifice provided downstream of the fixed orifice and whose effective opening area is varied according to the movement of the fuel amount determining element, whereby, when a constant fluid pressure is supplied to the fixed orifice, a fluid pressure which changes according to the amount of fuel injected is taken off at a middle portion between the fixed and variable orifices, and a fluid pressure actuator which operates an exhaust gas recirculation control valve by being energized by the fluid pressure taken off from the abovementioned middle portion.

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