Internal-combustion engines – Cooling – Internal cooling of moving parts; e.g. – hollow valves,...
Patent
1985-07-05
1986-09-02
Cuchlinski, Jr., William A.
Internal-combustion engines
Cooling
Internal cooling of moving parts; e.g., hollow valves,...
92186, F10P 310
Patent
active
046089470
ABSTRACT:
An arrangement for cooling the pistons and cylinder sleeves of an internal combustion engine. An annular cooling chamber is provided in the piston, and is open along the circumferential surface of the piston in the direction toward the cylinder sleeve. This cooling chamber is divided into subchambers over a portion of its axial height. Cooling medium is supplied into a given subchamber, while cooling medium is withdrawn in the adjacent subchamber. The portion of the cooling chamber which is free of partitions may be embodied as an annular groove which is disposed radially inwardly of the piston rings. The particular cooling effect is essentially brought about by the back and forth movement of the cooling medium not only axially but also in the circumferential direction in the annular groove. In so doing, the cooling medium wets the cylinder sleeve during the up and down movement of the piston. With a great enough quantity of cooling medium, external cooling of the cylinder sleeve can be either entirely or partially dispensed with. An axially extending flange-like member can be provided as an economical replacement for an oil wiping ring.
REFERENCES:
patent: 2911963 (1959-11-01), Goldsmith
patent: 2967516 (1961-01-01), Stumpeig
patent: 4011797 (1977-03-01), Cornet
patent: 4180027 (1979-12-01), Taylor
patent: 4280455 (1981-07-01), Yamaguchi et al.
patent: 4359973 (1982-11-01), Shimada
Cuchlinski Jr. William A.
Klockner-Humboldt-Deutz Aktiengesellschaft
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