Search Results

In the fall of 1984, Toyota marketed a new engine control system through the use of a commercial single-chip microcomputer. Engine control functions have been optimally allocated between the system's hardware and software, and three new circuit modules have been developed for the calculation of basic injected fuel amount, and knock control, ignition control. This has resulted in a large scale reduction of the load on the system's microcomputer, which has made the use of commercially available microcomputers possible, thus cutting costs while at the same time increasing the functions and reliability of the system.

Engine control systems were the precursor of scale automotive electronics systems using microcomputers. Toyota Motor Corporation introduced high - level, total control of the power train by applying system integration through introducing a multi - CPU system to the 1988 MY Toyota Camry. Integration in the ECU has been promoted to parallel with system integration. By adopting single - chip microcomputers, monolithic ICs, and hybrid ICs all designed and developed for car electronics, and semiconductor barometric pressure sensors for car electron into ECU's. etc. ever - expandable functions can be provided in a smaller and more lightweight ECU package with higher reliability.