Exhaust gas recirculation system for an engine

Details Exhaust gas recirculation system for an engine Exhaust gas recirculation system for an engine

1996-10-16

1998-06-09

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

12318431, F02M 2507

Patent

active

057620512

ABSTRACT:
An method and device for controlling the NO.sub.x production of an internal combustion engine having at least one cylinder with a cylinder head and an air intake and exhaust passage is disclosed. The device comprises an exhaust gas recirculation system. In a first embodiment, a portion of the exhaust gas produced by the engine is routed through a by-pass line from the exhaust passage through a valve to the air intake passage. In a second embodiment, the by-pass line extends in the space between the two banks of a "V"-type engine along an intake manifold. In a third embodiment, the by-pass line is a passage extending through the cylinder head from an exhaust passage to a valve having an outlet in communication with the air intake passage leading to that cylinder.

REFERENCES:
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patent: 4328781 (1982-05-01), Morita
patent: 4615324 (1986-10-01), Choushi et al.
patent: 4643157 (1987-02-01), Nishikawa et al.
patent: 4727848 (1988-03-01), Stumpp et al.
patent: 5203310 (1993-04-01), Gatellier
patent: 5562086 (1996-10-01), Asada et al.

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