Exhaust gas purification system for an internal combustion engin

Details Exhaust gas purification system for an internal combustion engin Exhaust gas purification system for an internal combustion engin

1978-06-28

1981-04-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60290, 60307, 123568, F01N 310, F02M 2506

Patent

active

042637830

ABSTRACT:
An engine exhaust gas purification system includes an EGR line for the recirculation of exhaust gases from an engine exhaust system back into an intake system thereof. An EGR valve is provided in the EGR line to control the rate of EGR. The EGR valve is actuated by an actuator which is operated by pressurized air supplied by a diaphragm pump driven by the engine in proportion to the engine speed. The pressure of the pressurized air is substantially proportional to the engine speed, whereby the EGR rate is controlled so as to be substantially proportional to the engine speed.

REFERENCES:
patent: 3203168 (1965-08-01), Thomas
patent: 3796049 (1974-03-01), Hayashi
patent: 3885538 (1975-05-01), Suter
patent: 3921396 (1975-11-01), Nohira
patent: 3945205 (1976-03-01), Atago
patent: 4085586 (1978-04-01), Shibata
patent: 4096692 (1978-06-01), Nakamura

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