Piston assembly with cooling lubricant reservoir defining member

Details Piston assembly with cooling lubricant reservoir defining member Piston assembly with cooling lubricant reservoir defining member

1984-06-25

1985-03-19

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

Internal cooling of moving parts; e.g., hollow valves,...

92159, 92186, 123193P, F01P 310, F02F 320

Patent

active

045052336

ABSTRACT:
A piston assembly for an internal combustion engine is made up from a piston main body and a lubricant reservoir defining member. The piston main body has a cup shaped structure including a crown portion and a hollow cylindrical wall portion joining thereto. The lubricant reservoir defining member includes a shelf plate main body portion formed with first and second depressions which define first and second lubricant reservoirs, and is securely mounted within the cup shaped piston structure with the shelf plate portion generally to and opposing the piston crown. The ratio of the surface area of the first lubricant reservoir to the surface area of the second lubricant reservoir is less than the ratio of the volume of the first lubricant reservoir to the volume of the second lubricant reservoir. Lubricant is supplied more towards the first lubricant reservoir and is drained more from the second reservoir.

REFERENCES:
patent: 1321525 (1919-11-01), Hellweg
patent: 2051547 (1936-08-01), Crist
patent: 2416429 (1947-02-01), Boucher
patent: 3805677 (1974-04-01), Clary et al.

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