US PATENT SUBCLASS 123 / 220
.~.~ Preheating

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

200  DF  ROTARY {12}
216  DF  .~ With charge treatment means {4}
220.~.~ Preheating

DEFINITION

Classification: 123/220

Preheating:

(under subclass 216) Apparatus wherein the treatment means consists of structure for raising the temperature of the air or combustible material prior to delivery to the combustion space.

SEE OR SEARCH CLASS

418, Rotary Expansible Chamber Devices,

86, for a rotary expansible chamber device provided with heat exchange means wherein the heating of the working fluid is an ancillary function to the cooling of the rotary device.