Piston unit for an internal combustion engine

Details Piston unit for an internal combustion engine Piston unit for an internal combustion engine

1997-10-09

1999-11-02

McMahon, Marguerite

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

92220, 92258, F01P 310

Patent

active

059750405

ABSTRACT:
Piston unit for an internal combustion engine, especially for a large diesel engine, comprising at least three main parts located in successive order in the direction of the longitudinal axis of the piston and to be connected to each other. The piston unit includes a uniform upper part (3), which defines, when installed within a cylinder of the engine, a combustion chamber from the side of the piston and which is fixed inside of the piston at its central region to a middle part (2) of the piston unit preferably by means of a screw (4) or the like. At least the main part of, preferably all of the piston ring grooves (7) are arranged on a middle part (2). In addition the upper part (1) is selected to be of a material with better heat resistance than that of the middle part (2) and of a lower part (1).

REFERENCES:
patent: 2159402 (1939-05-01), Retschy
patent: 2194097 (1940-03-01), Reggio
patent: 3323503 (1967-06-01), Grosshans et al.
patent: 4083292 (1978-04-01), Goloff
patent: 4372194 (1983-02-01), Vallaude
patent: 4375782 (1983-03-01), Schieber
patent: 4517930 (1985-05-01), Nakano et al.
patent: 4587932 (1986-05-01), Moebus

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