Internal combustion engine

Details Internal combustion engine Internal combustion engine

1980-11-20

1981-10-13

Miles, Tim R.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having combustible mixture forming means

123336, 123442, 123584, 137607, 251305, 261 23B, 261DIG50, F02B 1910

Patent

active

042942055

ABSTRACT:
A carburetor for a multi-cylinder internal combustion engine which has for each cylinder a main combustion chamber defined above the piston in the cylinder and a sub-combustion chamber defined above the main combustion chamber and communicating with the latter through a torch nozzle. The carburetor has a main intake passage and a sub-intake passage for supplying a comparatively lean mixture and a comparatively rich mixture to the main and sub-combustion chambers respectively. The carburetor has a single throttle valve shaft extending across the main and sub-intake passages with a main throttle valve and a sub-throttle valve mounted on the valve shaft and disposed in the main and sub-intake passages respectively. One of the main and sub-throttle valves has an outside diameter smaller than the inside diameter of the associated intake passage so that the ratio of the open areas of the main and sub-intake passages is not constant as the throttle shaft is operated. Thereby, the ratio of weight of air introduced into the sub-combustion chamber to the weight of air introduced into the main combustion chamber can be controlled in accordance with the load condition of the engine.

REFERENCES:
patent: 2638330 (1953-05-01), Morgenroth
patent: 3013778 (1961-12-01), Carlson et al.
patent: 3205879 (1965-09-01), Von Seggern et al.
patent: 3364911 (1968-01-01), Baudry et al.
patent: 3570821 (1971-03-01), Walker
patent: 3693935 (1972-09-01), Thauer
patent: 3842810 (1974-10-01), Yagi et al.
patent: 3897524 (1975-07-01), Freismuth et al.
patent: 4014960 (1977-03-01), Goto et al.

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