Internal-combustion engines – Cooling – Internal cooling of moving parts; e.g. – hollow valves,...
Patent
1994-01-03
1994-08-23
Kamen, Noah P.
Internal-combustion engines
Cooling
Internal cooling of moving parts; e.g., hollow valves,...
92 66, 91196, F07P 104
Patent
active
053397754
ABSTRACT:
Conventional cooling arrangements for the piston assemblies mounted within an engine block include the use of coolant that is circulated through the engine block. Generally, a plurality of cavities or water jackets are positioned in areas of high heat production within the engine block and the coolant is circulated between them and a radiator dissipate the heat created through engine operation. This method of cooling however requires the engine block to be stationary with respect to the pistons that reciprocated within to facilitate the circulation of the coolant within the block. The present invention provides a cooling arrangement for a first piston member that reciprocates within an engine block and in turn mounts at least one second piston member therewithin. The first piston member includes a sealed cavity that is positioned about a bore in which the second piston member is mounted for reciprocation. The cavity contains a cooling agent that dissipates the heat created within the first piston member as it reciprocates within the engine block.
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Clarke John M.
Ranganathan Padmanabhan R.
Caterpillar Inc.
Kamen Noah P.
Perry William C.
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