Fuel injection control system for internal combustion engine

Details Fuel injection control system for internal combustion engine Fuel injection control system for internal combustion engine

1985-07-26

1988-01-12

Chin, Gary

Boots, shoes, and leggings

36443112, 123480, 123486, F02M 5100

Patent

active

047195720

ABSTRACT:
A fuel injection control system for an internal combustion engine in which the amount of fuel injected per input stroke of the engine is precisely controlled so that a predetermined constant air-to-fuel ratio is maintained at all times. A fuel flow arithmetic unit, operating from inputs supplied from a sensor which detects the pressure in the intake manifold of the engine, calculates a fuel flow amount per intake stroke. The output of the fuel flow arithmetic unit is applied as an address input to a memory in which are prestored values of driving times for each value supplied from the fuel flow arithmetic unit. The driving times are calculated taking into account the non-zero opening and closing times of the fuel injection valves, thereby eliminating nonlinearities in the fuel flow amount driving time characteristics. A driving signal generating circuit drives (opens) the fuel injection valves for times indicated by the driving times outputted by the memory.

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patent: 4352158 (1982-09-01), Date et al.
patent: 4354238 (1982-10-01), Manaka et al.
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patent: 4359032 (1982-11-01), Ohie
patent: 4387429 (1983-06-01), Yamauchi et al.
patent: 4397282 (1983-08-01), Salway
patent: 4438496 (1984-03-01), Ohie

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