Device for adjusting engine timing

Details Device for adjusting engine timing Device for adjusting engine timing

1981-11-24

1984-05-22

Lall, Parshotam S.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123435, 123501, 73 35, F02P 504

Patent

active

044495013

ABSTRACT:
The timing of delivery of fuel to a compression ignition engine is determined and adjusted by observing the peak pressure attained in a combustion chamber during a fueled working stroke of the engine. This is compared with a derived peak pressure and a timing adjustment made. The condition of the engine is taken into account by comparing an actual pressure ratio with a desired pressure ratio, the actual pressure ratio being determined by obtaining a peak pressure signal when fuel is supplied or a pressure signal at a fixed point in the working stroke before fuel is supplied. The desired pressure ratio is provided by a circuit to which signals representing engine speed and fuel quantity are supplied.

REFERENCES:
patent: 2335944 (1943-11-01), Lieberherr
patent: 2621642 (1952-12-01), Malick
patent: 4033310 (1977-07-01), Nicolls
patent: 4116175 (1978-09-01), Sand
patent: 4327688 (1982-05-01), Lowther
patent: 4367716 (1983-01-01), Yasuhara

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