Devices for recirculating exhaust gases in internal combustion e

Details Devices for recirculating exhaust gases in internal combustion e Devices for recirculating exhaust gases in internal combustion e

1971-06-01

1976-09-14

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

173179G, F02M 2506

Patent

active

039800636

ABSTRACT:
The invention is directed to means for improving the operating conditions of internal combustion engines by the selective recirculation of exhaust gases as a function of the different engine speeds. More particularly, the exhaust gases are recirculated when starting the engine, during the period preceding the actual ignition, during low engine speed periods corresponding to a considerable and pre-adjusted induction vacuum, and also when the engine is operating under full-load conditions, the recirculation being discontinued at the other engine speeds, to reduce the atmospheric pollution and improve the engine performances.

REFERENCES:
patent: 2287593 (1942-06-01), Ball
patent: 2317582 (1943-04-01), Bicknell
patent: 2408846 (1946-10-01), Golden et al.
patent: 3621825 (1971-11-01), Ojala
patent: 3636934 (1972-01-01), Nakajima et al.

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