Toyota's new single-chip microcomputer based engine and transmission control system
Toyota succeeded in the fall of 1984 in manufacturing a complex engine and transmission control system using a newly developed single-chip microcomputer. This microcomputer, equipped with an 8K-byte ROM (Read Only Memory) and a 256-byte RAM (Random Access Memory), a powerful real time processing function, and a high-speed optimum instruction set, is better suited for automobiles. Application of the latest CMOS technology has enabled lower power consumption and improved noise immunity. The new system, which includes a new function; the electronic spark advance with knock control in addition to the conventional sophisticated system, has greatly improved the performance and driveability of vehicles. The newly designed electronic control unit (ECU) has been greatly improved in reliability and has not changed in its size with the adoption of the highly integrated new microcomputer, which is due to the fact that it uses fewer LSIs (Large Scale Integrated circuits) than the conventional ECU, although it includes the great additional function.
- OSTI ID:
- 5344158
- Report Number(s):
- TP-850289
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330101* -- Internal Combustion Engines-- Spark-Ignition
330602 -- Vehicle Design Factors-- Engine-Transmission Matching
AUTOMOBILES
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL
CONTROL SYSTEMS
DATA PROCESSING
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY CONSUMPTION
ENGINES
EQUIPMENT
FUEL CONSUMPTION
HEAT ENGINES
INTEGRATED CIRCUITS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MACHINE PARTS
MANUFACTURING
MECHANICAL TRANSMISSIONS
MEMORY DEVICES
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
PERFORMANCE
PROCESSING
REAL TIME SYSTEMS
RELIABILITY
SPARK IGNITION ENGINES
VEHICLES