Apparatus for determining the duration of fuel injection control

Details Apparatus for determining the duration of fuel injection control Apparatus for determining the duration of fuel injection control

1978-06-29

1980-04-22

Gruber, Felix D.

Boots, shoes, and leggings

123 32EC, 123 32EE, 364117, F02D 500, G06F 1550

Patent

active

041998120

ABSTRACT:
A fuel injection system receives valve control pulses, the length of which determines the fuel quantity delivered to the engine. A first counter receives a pulse train whose frequency depends on the air flow rate and this pulse train is admitted for a period defined by the engine speed. The content of the counter is then counted out at a frequency which is synthesized from operational parameters of the engine, including, in particular, the temperature. For this purpose, there is generated a temperature-dependent frequency which is fed to a multiplier circuit which combines this frequency with data derived from a memory to generate an output signal which is further processed to provide the fuel injection pulses for the engine.

REFERENCES:
patent: 3898962 (1975-08-01), Honig et al.
patent: 3964443 (1976-06-01), Hartford
patent: 3986006 (1976-10-01), Kawai et al.
patent: 3991727 (1976-11-01), Kawai et al.
patent: 4107921 (1978-08-01), Iizuka
patent: 4116169 (1978-09-01), Krupp et al.

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