US PATENT SUBCLASS 123 / 568.17
.~.~ Having specific exhaust gas outlet structure at intake manifold

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}
568.17.~.~ Having specific exhaust gas outlet structure at intake manifold {1}
568.18  DF  .~.~.~> Having a valve located at the outlet of the EGR passage

DEFINITION

Classification: 123/568.17

Having specific exhaust gas outlet structure at intake manifold:

(under subclass 568.11) Subject matter wherein the means to return the products of combustion includes a particular structural aspect (e.g., shape, size) of an opening at a juncture of the conduit conducting the products of combustion from the combustion chamber to the intake manifold.

SEE OR SEARCH THIS CLASS, SUBCLASS:

184.21+, for specific intake manifold details.