Microprocessor Control Brings About Better Fuel Economy with Good Drivability

800056

02/01/1980

Event
1980 Automotive Engineering Congress and Exposition
Authors Abstract
Content
A microcomputer control system for managing the automotive engine’s air-fuel ratio, spark ignition timing, exhaust gas recirculation and idle speed has been developed and is marketed in Japan under the name of ECCS.
By installing this system in a 1,500 kg vehicle’s 6 cylinder 2.8 liter engine, the four factors listed above have been controlled so precisely that their optimum relative calibration has been realized.
As a result, fuel economy has been improved by 10% while good drivability has been maintained.
This paper outlines ECCS and describes how control factors in a “steady state” are determined. It also discusses the control sequence in transient conditions, such as “cold” starts, “hot” restarts, clutch engagement, acceleration, deceleration, gearshifts and the “warm-up” process.
Meta TagsDetails
DOI
https://doi.org/10.4271/800056
Pages
16
Citation
Ikeura, K., Hosaka, A., and Yano, T., "Microprocessor Control Brings About Better Fuel Economy with Good Drivability," SAE Technical Paper 800056, 1980, https://doi.org/10.4271/800056.
Additional Details
Publisher
Published
Feb 1, 1980
Product Code
800056
Content Type
Technical Paper
Language
English