Piston structure with heat insulated combustion chamber

Details Piston structure with heat insulated combustion chamber Piston structure with heat insulated combustion chamber

1996-12-13

1998-04-14

Dolinar, Andrew M.

Internal-combustion engines

Precombustion and main combustion chambers in series

Chamber temperature control means

123271, 123276, F02F 326, F02B 2306

Patent

active

057380660

ABSTRACT:
In this piston structure with a heat insulated combustion chamber, a combustion chamber structure is fixed to a piston body stably and firmly by a pre-stressed holding member. The combustion chamber structure which constitutes a combustion chamber provided on an outer circumferential part of a lower portion thereof with a flange made integral therewith, and which comprises a heat resisting material, is fixed by a holding member fused to the piston body. After the piston body and holding member have been welded, the holding member is pre-stressed by a press so that the fixed condition of the combustion chamber structure with respect to the piston body during an operation of the engine is stabilized.

REFERENCES:
patent: 5425337 (1995-06-01), Matsuoka
patent: 5483933 (1996-01-01), Kawamura
patent: 5520148 (1996-05-01), Kawarmura et al.
Japan Abstract, JP-A-05 010209, Jan. 19, 1993.
Japan Abstract, JP-A-63 176621, Jul. 20, 1988.

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