Otto-cycle engine

Details Otto-cycle engine Otto-cycle engine

1992-10-30

1993-07-27

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Charge volume varying

123405, F02D 900, F02B 7502

Patent

active

052303152

ABSTRACT:
An Otto-cycle engine in which the expansion ratio is set in the range 11:1 to 16:1, comparable to the expansion ratios of Diesel engines and which has a rotary valve mounted in the suction passage. The valve is equipped with a valve actuating timing-adjusting device. The valve is closed prior to the bottom dead centre of each induction stroke to set the expansion ratio higher than the compression ratio set under full load conditions. The engine further includes a knock sensor for sensing or forecasting knocking. Valve closure is advanced by the adjusting device in response to the output signal from the sensor to adjust the compression ratio of the engine.

REFERENCES:
patent: 4280451 (1981-07-01), Moore
patent: 4344400 (1982-08-01), Asano
patent: 4426985 (1984-01-01), Kanesaka
patent: 4461151 (1984-07-01), Kanesaka
patent: 4499872 (1985-02-01), Ward et al.
patent: 4802452 (1989-02-01), Kanesaka
patent: 4932378 (1990-06-01), Hitomi et al.
patent: 4961406 (1990-10-01), Burandt
patent: 5123388 (1992-06-01), Kanesaka

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