GM Micro-Computer Engine Control System

800053

02/01/1980

Event
1980 Automotive Engineering Congress and Exposition
Authors Abstract
Content
The General Motors microprocessor based Computer Controlled Catalytic Converter (C-4) system used on 1980 California vehicles and nationwide in 1981 is presented. The basic system function is to maintain engine exhaust air-fuel ratio control so that oxidation and reduction characteristics of three-way catalytic converters can be effectively utilized. Control strategies and components used in the Closed Loop Carburetor Control (CLCC) function are reviewed. Other system components and functions including secondary air management control, electronic spark timing, idle speed control, torque converter clutch control, controlled canister purge, exhaust gas recirculation control, early fuel evaporative control and system self diagnostics are presented.
Meta TagsDetails
DOI
https://doi.org/10.4271/800053
Pages
19
Citation
Grimm, R., Bremer, R., and Stonestreet, S., "GM Micro-Computer Engine Control System," SAE Technical Paper 800053, 1980, https://doi.org/10.4271/800053.
Additional Details
Publisher
Published
Feb 1, 1980
Product Code
800053
Content Type
Technical Paper
Language
English