Controlled exhaust gas recirculation

Details Controlled exhaust gas recirculation Controlled exhaust gas recirculation

1975-01-22

1976-08-24

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60284, 60294, 123119A, F02M 2506, F02B 7510

Patent

active

039759040

ABSTRACT:
Means to divert engine exhaust gases around a catalytic converter when the xhaust gases are too cool to support catalytic combustion or treatment of objectionable pollutants such as nitrogen oxides, carbon monoxide, and unburned hydrocarbons. The diverted gases are delivered to the engine's combustion air intake system for recycle in the engine. At normal operating temperatures (after initial warm-up) the diverter line is closed so that all of the exhaust gases are directed through the catalytic converter.

REFERENCES:
patent: 1552819 (1925-09-01), Brush
patent: 2287593 (1942-06-01), Ball
patent: 3172251 (1965-03-01), Johnson
patent: 3211534 (1965-10-01), Ridgway
patent: 3512509 (1970-05-01), Daigh
patent: 3675633 (1972-07-01), Nakajima
patent: 3788284 (1974-01-01), Gardner

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