Internal-combustion engines – Noncompression
Patent
1977-05-24
1978-09-19
Myhre, Charles J.
Internal-combustion engines
Noncompression
123 32SP, 123169EL, 123191S, 313141, F02B 1908, F02B 1700
Patent
active
041145682
ABSTRACT:
Disclosed is an internal combustion engine comprising a main chamber and an auxiliary chamber which are interconnected with each other via a connecting passage. The connecting passage is tangentially connected to the inner wall of the auxiliary chamber. A raised portion is formed on the inner wall of the auxiliary chamber at a position located opposite to the inner wall to which the connecting passage is tangentially connected with respect to the axis of the auxiliary chamber. A recess is formed on the inner wall beneath the raised portion. The nozzle of a fuel injector is directed to the recess so as to form a rich air-fuel mixture therein and to form a rich air fuel mixture in the auxiliary chamber. The spark plug has an electrode mounting end face on which the central electrode and the earthing electrode are mounted. The mounting end of the central electrode is covered by an insulator and is disposed in the periphery of the electrode mounting face end. The spark gap of the spark plug is arranged on the periphery of the electrode mounting end face at a position located opposite to the mounting end of the central electrode. The spark plug is disposed in the auxiliary chamber so that the insulator covering the mounting end of the central electrode is directly exposed to a lean air-fuel mixture swirling in the auxiliary chamber, and the spark gap of the spark plug is located in the recess in which a rich air-fuel mixture is formed.
REFERENCES:
patent: 2422610 (1947-06-01), Bagnulo
patent: 3799140 (1974-03-01), Vogelsang et al.
patent: 3875909 (1975-04-01), May
Habu Nobuo
Yanagihara Hiromichi
Argenbright Tony M.
Myhre Charles J.
Toyota Jidosha Kogyo Kabushiki Kaisha
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