Insulated oil cooled piston assembly

Details Insulated oil cooled piston assembly Insulated oil cooled piston assembly

1979-01-11

1981-06-02

Feinberg, Craig R.

Internal-combustion engines

Cooling

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

123 4138, 123193P, 92176, F01P 104

Patent

active

042704944

ABSTRACT:
An oil cooled diesel engine piston is designed to restrict heat loss from the combustion chamber through provision of a combustion chamber insert defining a central non-oil-cooled chamber and a surrounding annular insulating air gap. The air gap controls heat flow primarily between the combustion gas exposed wall of the insert and an adjacent coolant exposed wall of the main piston volume.
The insert is press fitted into a recess in the main piston body and is positively locked therein by a retaining ring. A seal ring closes expansion clearance provided at the upper edge of the insert against significant gas flow into the insulating air gap. Insulating efficiency of the air gap is maximized by forming the gap with a thickness throughout a major portion of its extent of between about 0.040 and 0.060 inches.
Numerous additional features are also disclosed.

REFERENCES:
patent: 2214891 (1940-09-01), Schrom
patent: 3616729 (1971-11-01), Fischer
patent: 3628511 (1971-12-01), Fischer
patent: 4056044 (1977-11-01), Kamman et al.
Kreith; Principles of Heat Transfer; pp. 404-405; Copyright 1973.
Lichty; Internal Combustion Engines; pp. 483-484; Copyright 1939.

Affiliated with

Also associated with

Rating

Insulated oil cooled piston assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Insulated oil cooled piston assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Insulated oil cooled piston assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1860066