Piston with a lightweight construction that is subjected to...

Details Piston with a lightweight construction that is subjected to... Piston with a lightweight construction that is subjected to...

2011-03-01

2011-03-01

Lazo, Thomas E (Department: 3745)

Expansible chamber devices

Piston

With ported chamber in piston part for circulating heat...

C092S159000

Reexamination Certificate

active

07895936

ABSTRACT:
The invention relates to a piston of an internal combustion engine comprising an upper part (1) and a lower part (3) that consist of a respective light metal alloy (15) and to an associated method for increasing the thermal load-bearing capacity of a multi-part piston that is subjected to high thermal stress in an internal combustion engine. The piston is provided with at least one insulating element, in particular a gap (7) between the lower part (3) and the upper part (1), at least one piston ring carrier (6), which consists of a different material from that of the upper part (1) and the lower part (3), in particular of steel or grey cast iron, being located next to said gap as a component. A thermal current that is introduced into the piston base (2) is prevented from dissipating via the piston ring carrier (6) by means of the insulating element.

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patent: 02157461 (1990-06-01), None
patent: 791983 (1981-02-01), None

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