Electronic engine control trends outlined

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Automot. Eng.; (United States)

OSTI ID:6950212

Hata, Y; Asano, M

Since microprocessors were first employed, the main objective in electronic engine control has been optimization of the engine system in terms of various performance targets. These goals have changed with technological progress and society's needs. Today a wide variety of microcomputer control systems are used for engine control purposes. The first target was optimizing engine control variables to meet exhaust emission standards and obtain better fuel economy. After this was achieved, engine design efforts shifted towards further improvement of both fuel economy and power output by mechanical means such as higher compression, turbochargers, and double overhead camshafts. Variable control mechanisms were then introduced and the number of controllable components increased while better sensors helped to provide improved control. New trends are appearing in all aspects of this second generation of engine control development. Nissan's Electronic Concentrated Engine Control System (ECCS) has developed in a manner somewhat parallel to Ford's Electronic Engine Control System (EEC). The various improvements made to the ECCS are classified and described. The major mechanical component modifications in this system have appeared only recently (i.e. over the last two years). New control items adopted to other engine control systems are indicated, using the same classifications and showing similar tendencies.

• Research Organization: Nissan Motor Co., Ltd.
• OSTI ID: 6950212
• Journal Information: Automot. Eng.; (United States), Vol. 94:8
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
COMPUTERIZED CONTROL SYSTEMS
CLASSIFICATION
COMPRESSION
ELECTRONIC EQUIPMENT
EMISSION
EXHAUST GASES
FUEL ECONOMY
MICROPROCESSORS
MODIFICATIONS
OPTIMIZATION
PERFORMANCE
POWER GENERATION
STANDARDS
TURBOCHARGERS
COMPRESSORS
COMPUTERS
CONTROL SYSTEMS
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
MICROELECTRONIC CIRCUITS
SUPERCHARGERS
WASTES
330100* - Internal Combustion Engines