US PATENT SUBCLASS 123 / 568.12
.~.~ Exhaust gas cooled during recirculation

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
568.11  DF  .~ Exhaust gas used with the combustible mixture (e.g., emission control Exhaust Gas Recirculation (EGR) valve) {10}
568.12.~.~ Exhaust gas cooled during recirculation

DEFINITION

Classification: 123/568.12

Exhaust gas cooled during recirculation:

Subject matter under subclass 568.11 provided with means to reduce the temperature of the returned products of combustion after the products enter an EGR conduit, but prior to the products of combustion being returned to the combustion chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

540+, for cooling of the combustible mixture, or cooling of the combustible mixture mixed with another constituent (e.g., exhaust gas).

543+, for heating of the combustible mixture, or heating of the combustible mixture mixed with another constituent (e.g., exhaust gas).