Exhaust recirculation

Details Exhaust recirculation Exhaust recirculation

1976-03-19

1977-10-25

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

040551580

ABSTRACT:
An improved internal combustion engine, exhaust gas recirculation (EGR) system is described which features the use of a liquid-cooled heat-exchange device to cool the recirculated exhaust before it is fed into the intake system of said engine. A preferred system uses a condensate trap situated downstream of said heat-exchange device. Use of this system effects further reduction in nitrogen oxides (NO.sub.x) content of the exhaust.

REFERENCES:
patent: 2087411 (1937-07-01), Lundquist
patent: 2115228 (1938-04-01), Lundquist
patent: 2977940 (1961-04-01), Theriault
patent: 3412722 (1972-03-01), Epifanio, Sr.
patent: 3621825 (1971-11-01), Ojaza
patent: 3646764 (1972-03-01), Nakajima et al.
patent: 3677239 (1972-07-01), Elkins
Society of Automotive Engineers, Report 700 146 of Jan. 12, 1970.

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