Apparatus for supplying rich air/fuel mixture in an internal com

Details Apparatus for supplying rich air/fuel mixture in an internal com Apparatus for supplying rich air/fuel mixture in an internal com

1975-11-06

1978-02-07

Lazarus, Ronald H.

Internal-combustion engines

Two-cycle

Rear compression

123 32ST, 123 32SP, 123191S, 123191SP, F02M 2300

Patent

active

040721361

ABSTRACT:
An auxiliary combustion chamber at least partially embedded in the cylinder head of an internal combustion engine adjacent the intake valve of a main combustion chamber and having a spark plug positioned in the auxiliary chamber and unvalved inlet and outlet ports interconnecting the auxiliary chamber with the main chamber. The air/fuel mixture drawn into the main combustion chamber is deflected by the back surface of the intake valve into the inlet port of the auxiliary combustion chamber toward the spark plug. The auxiliary combustion chamber may include a shell positioned in a cavity in the cylinder head with devices for properly positioning the shell in the cavity and for retaining the shell and preventing it from rotating. A passage is provided for rich air/fuel mixture terminating at the rear surface of the valve, when closed, with refinements of the passage, shape of the inlet port, and main combustion chamber wall facilitating the flow of the rich mixture into the auxiliary combustion chamber by venturi action. The flow of fresh mixture into the auxiliary combustion chamber through suction scavenges the combustion gas remaining from the prior firing sequence.

REFERENCES:
patent: 3318292 (1967-05-01), Hideg
patent: 3364911 (1968-01-01), Baudry
patent: 3382850 (1968-05-01), Baudry
patent: 3678905 (1972-07-01), Diehl
patent: 3776212 (1973-12-01), Karlovitz
patent: 3878826 (1975-04-01), Date
patent: 3926158 (1975-12-01), Dolza
patent: 3974818 (1976-08-01), Noguchi et al.
patent: 3982504 (1976-09-01), Noguchi et al.
SAE Article, 9/1961, pp. 57, 58, 59, Jean Baudry, L.D. Contra, P.D.

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