Method of processing controlled variables in engine control syst

Details Method of processing controlled variables in engine control syst Method of processing controlled variables in engine control syst

1986-12-15

1989-05-16

Lall, Parshotam S.

Boots, shoes, and leggings

36443111, 123417, 123440, 73116, G06F 1520, G06F 946

Patent

active

048315362

ABSTRACT:
An engine control system includes a pulse generator for generating a synchronous pulse signal synchronously with the speed of rotation of an engine, a timer for generating a timer pulse signal of a constant period, and a microcomputer having an interrupt input terminal for receiving the pulse signals as interrupt signals and operable to start processing operations in response to the interrupt signals, so that a number of controlled objects of the engine can be controlled on the basis of data indicative of operating conditions of the engine. Data is processed in response to an interrupt caused by the synchronous pulse signal to control a first-group controlled object of the number of controlled objects and setting a flag to request processing of data items related to the first-group controlled object. Data is then processed in response to an interrupt caused by the timer pulse signal to control a second-group controlled object of the number of controlled objects and setting a flag to request processing of a data item related to the second-group controlled object. In the absence of the interrupts, a plurality of predetermined data items and the data items requested to be processed by the flags are processed.

REFERENCES:
patent: 3969614 (1976-07-01), Moyer et al.
patent: 4282573 (1981-08-01), Imai et al.
patent: 4348728 (1982-09-01), Sugusaka et al.
patent: 4355360 (1982-10-01), Asano et al.
patent: 4482962 (1984-11-01), Amano et al.

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