Ignition and fuel injection system for multicylinder engines

Details Ignition and fuel injection system for multicylinder engines Ignition and fuel injection system for multicylinder engines

1981-03-27

1983-08-16

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123198F, F02D 1702, F02B 300, F02D 900, F02D 500

Patent

active

043985203

ABSTRACT:
The switching off of one or more cylinders of a multicylinder engine to save fuel when the engine is running lightly loaded has been found to reduce the effectiveness of computer control of ignition timing and fuel injection unless additional fields of stored control information are provided for responding to the various combinations of engine parameter values that arise in operation. Accordingly, with each step of reduction of the number of working cylinders, the control of ignition timing and fuel injection is shifted to a different bank of fixed value memory (ROM).

REFERENCES:
patent: 4040395 (1977-08-01), Demetrescu
patent: 4106448 (1978-08-01), Noguchi et al.
patent: 4144864 (1979-03-01), Kato et al.
patent: 4181944 (1980-01-01), Yamauchi et al.
patent: 4207855 (1980-06-01), Phillips
patent: 4207856 (1980-06-01), Sugasawa et al.

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