F - Mech Eng,Light,Heat,Weapons – 01 – M
Patent
F - Mech Eng,Light,Heat,Weapons
01
M
123/245, 123/256
F01M 3/00 (2006.01) F01M 9/00 (2006.01) F02B 23/06 (2006.01) F02F 3/00 (2006.01) F01M 1/08 (2006.01)
Patent
CA 1321329
-19- Abstract of the Disclosure An oilless engine having a piston reciprocal within a cylinder and along an axis of such cylinder while providing an annular gap therebetween to receive combustion gases and a gas phase blow-by control system for such engine. The system comprises (a) an annular receptacle in at least one of said piston and cylinder; (b) an annular body of graphite carrying high temperature solid lubricant disposed in said annular receptacle, said body presenting a face projecting out of said receptacle; (c) an elastomer material retentive of elasticity at the maximum operating temperature to be experienced by said body, interposed between said body and receptacle to urge said body to close said gap under all operating conditions of said engine; and (d) axially directed grooves in said body face sized to substantially trap cylinders of combustion gases therein by viscosity under low pressure gradients and to limit the passage of a combustion gases through said grooves under high pressure gradients to one percent or less of the cylinder gas charge volume, the gas cylinders functioning as bearings to ride the piston during reciprocation. 2535L
588553
Rao Vemulapalli Durga Nageswar
Wade Wallace Robert
Ford Motor Company Of Canada Limited
Sim & Mcburney
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