Pre-combustion chamber-type engine

Details Pre-combustion chamber-type engine Pre-combustion chamber-type engine

1996-02-06

1997-09-09

Dolinar, Andrew M.

Internal-combustion engines

Precombustion and main combustion chambers in series

Chamber temperature control means

F02B 1916

Patent

active

056645406

ABSTRACT:
The present invention provides a pre-combustion chamber-type engine, which optimizes the relation between the heat capacity of the pre-combustion chamber structure that forms the pre-combustion chamber and the displacement per cylinder and thereby improves the net average effective pressure and fuel efficiency. In this pre-combustion chamber-type engine, which has the pre-combustion chamber structure 15 installed in the cylinder head 3 so that it is surrounded by a heat insulating layer, the ratio of the heat capacity of the pre-combustion chamber structure to the displacement per cylinder is set to 0.35 cal/.degree.C..multidot.cm.sup.3 or less. Alternatively, the ratio of the heat capacity of the pre-combustion chamber structure to the inner surface area of the pre-combustion chamber is set to 0.55 cal/.degree.C..multidot.cm.sup.2 or lower.

REFERENCES:
patent: 4738227 (1988-04-01), Kamo et al.
patent: 5520148 (1996-05-01), Kawamura et al.

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