Transient System Optimization of an Experimental Engine Control System Over the Federal Emissions Driving Schedule 780286
With the fuel economy and emission requirements more demanding than ever and passenger-car engine control systems more sophisticated than ever, there exists a need for a methodical procedure to optimize the fuel economy subject to emission limits of the entire engine-vehicle-aftertreatment system over the federal fuel economy and emission tests. The optimal feedback control functions should account for: 1) transient system interactions; 2) cold start engine-catalytic converter warm-up dynamics; 3) exhaust aftertreatment; 4) driveability; and 5) any repeatable unknown phenomena which affect end-of-test fuel consumption or emissions.
This paper presents an experimental Transient System Optimization (TSO) procedure which meets these requirements.
Citation: Dohner, A., "Transient System Optimization of an Experimental Engine Control System Over the Federal Emissions Driving Schedule," SAE Technical Paper 780286, 1978, https://doi.org/10.4271/780286. Download Citation
Author(s):
Alan R. Dohner
Affiliated:
General Motors Research Lab.
Pages: 18
Event:
1978 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1978 Transactions-V87-A
Related Topics:
Engine control systems
Fuel economy
Fuel consumption
Optimization
Environmental testing
Emissions certification
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
