Precombustion chamber construction of internal combustion engine

Details Precombustion chamber construction of internal combustion engine Precombustion chamber construction of internal combustion engine

1985-10-11

1986-10-14

Nelli, Raymond A.

Internal-combustion engines

Precombustion and main combustion chambers in series

Precombustion chamber liner or coating

123271, B41F 1354

Patent

active

046166114

ABSTRACT:
A precombustion chamber construction of an internal combustion engine includes an upper ceramic body, a lower ceramic body abutting against the upper ceramic body to form a precombustion chamber communicating through an injection hole with a main combustion chamber of the internal combustion engine, and a metal ring member fitted on outer circumferences of the upper and lower ceramic bodies. According to the invention, the precombustion chamber construction comprises a first key member provided in the upper ceramic body and the metal ring member in the proximity of its upper end, and a second key member provided in the lower ceramic body and the metal ring member in the proximity of its lower end. In this manner, the upper and lower ceramic bodies are prevented from being rotatively moved even if they are subjected to rotating forces caused by vibrations of the engine or explosions of a fuel. The precombustion chamber construction is easy to handle and superior in gas sealing because an air layer is easily formed between the metal ring member and a cavity of a cylinder head for accommodating the precombustion chamber construction.

REFERENCES:
patent: 4325334 (1982-04-01), Nishida et al.
patent: 4511612 (1985-04-01), Huther et al.

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