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.
Transient System Optimization of an Experimental Engine Control System Over the Federal Emissions Driving Schedule
Sae Technical Papers
1978 Automotive Engineering Congress and Exposition ; 1978
1978-02-01
Conference paper
English
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