초록 ▼

An electronic control system for an internal combustion engine, equipped with at least two central processing units for executing control of different operations. Counters are connected to respective ones of the central processing units for individually detecting engine speed, each of which counters

An electronic control system for an internal combustion engine, equipped with at least two central processing units for executing control of different operations. Counters are connected to respective ones of the central processing units for individually detecting engine speed, each of which counters counts clock pulses inputted thereto at a predetermined time interval in a predetermined operating state of the engine to thereby detect engine speed. A malfunction in each of the counters is sensed by comparing a counted value recorded by each counter and a respective stored value stored in memory. Each of the operations is enabled to be controlled based on an output from one of the counters when the other of the counters malfunctions.

대표청구항 ▼

An electronic control system for an internal combustion engine, comprising: at least two central processing units for executing control of different operations; at least two counters connected to respective ones of said central processing units for individually detecting engine speed; means connecte

An electronic control system for an internal combustion engine, comprising: at least two central processing units for executing control of different operations; at least two counters connected to respective ones of said central processing units for individually detecting engine speed; means connected to said counters and operable when the engine is in a predetermined operating state, wherein the engine operation is steady, for inputting clock pulses to each of said counters at a predetermined time interval whereby said each counter counts said clock pulses to thereby detect engine speed in said predetermined operating state of the engine; memory means storing values representative of normal engine speed in said predetermined operating state as counted values of said counters; means for sensing a malfunction in each of said counters by comparing a counted value recorded by a counter and a respective stored value stored in said memory device; and means for enabling each of the operations to be controlled based on an output from one of said counters when it is sensed that the other of said counters malfunctions.