Valve control arrangements

Details Valve control arrangements Valve control arrangements

1978-06-28

1980-07-29

Lazarus, Ronald H.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2500

Patent

active

042145627

ABSTRACT:
The invention relates to a valve control arrangement for controlling the flow of exhaust gas from an exhaust manifold to an air inlet of an internal combustion engine which is supplied with fuel by a fuel pump. The quantity control member of the pump is connected through linkage to a valve through which exhaust gas can flow into a conduit connected to the air inlet manifold. In this manner the quantity of exhaust gas recirculated depends upon the setting the control member of the pump. A further valve is positioned upstream so far as exhaust gas is concerned, of the valve and the further valve is adjusted so that it maintains the pressure drop across the first mentioned valve substantially constant. This is achieved in the example, by means of a diaphragm opposite sides of which are responsive to the pressure on opposite sides of the first mentioned valve.

REFERENCES:
patent: 1679521 (1928-08-01), Good
patent: 3802402 (1974-04-01), Swatman
patent: 3807376 (1974-04-01), Glockler
patent: 4073202 (1978-02-01), Aoyama

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