TOYOTA'S NEW MICROPROCESSOR BASED ENGINE AND TRANSMISSION CONTROL SYSTEM
Toyota introduced a new engine control system using a new microprocessor during the Fall of 1982. The new control system is used effectively for more complex application to engine and automatic transmission control. It controls air-fuel ratios in combination with the transmission shift control to achieve good fuel economy, driveability, as well as emission reduction. This system includes a self diagnostic capability, in which the electronic control unit (ECU) diagnoses system abnormalities, stores them in the memory and turn on the CHECK ENGINE lamp. To assure the proper system operation against any failure of the processor, the electronic control unit has a back up circuit which executes the predetermined operation of fuel injection and spark timing. For this system, a new 12-bit microprocessor capable of high speed real time processing was developed.
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Supplemental Notes:
- Electronic Engine/Drivetrain Control SP-540. International Congress and Exposition, Detroit, Michigan, February 28-March 4, 1983.
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Corporate Authors:
Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA United States 15096 -
Authors:
- Ono, H
- Nakano, J
- Nakano, Y
- Takahashi, Y
- Publication Date: 1983-2
Media Info
- Features: Figures; References;
- Pagination: p. 19-26
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Serial:
- Publication of: Canada Centre for Remote Sensing
- Publisher: Canada Centre for Remote Sensing
Subject/Index Terms
- TRT Terms: Air quality management; Automatic transmissions; Diagnosis; Diagnostic tests; Electronic control; Fuel air mixtures; Microprocessors; Vehicle power plants
- Uncontrolled Terms: Air fuel ratio
- Old TRIS Terms: Electronic engine control
- Subject Areas: Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00372805
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: SAE 830423, HS-034 390
- Files: HSL, USDOT
- Created Date: May 31 1983 12:00AM