An Experimental Evaluation of Torque Sensor Based Feedback Control of Combustion Phasing in an SI-engine
Artikel i vetenskaplig tidskrift, 2005

Feedback control of combustion phasing based on a crankshaft integrated torque sensor was developed for a spark ignited five cylinder engine. A cylinder individual measure for combustion phasing, called 50% torque ratio, is extracted from the torque signal and used by a spark advance controller. The estimated torque ratio is based on a simplified estimation algorithm where torsional resonances in the crankshaft are neglected, thus limiting the operating range up to a maximum of about 2000 rpm. The torque ratio measure has been compared with the existing measure 50% burned mass fraction, and proven to be a reliable measure for combustion phasing. The spark advance controller has been evaluated by using internal EGR changes as combustion disturbances and an examination of its cylinder balancing properties was performed.

control

Engine

Författare

Stefan Larsson

Chalmers, Signaler och system, System- och reglerteknik, Automation

Ingemar Andersson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

SAE Technical Paper Series 2005-01-0060

Styrkeområden

Transport

Energi

Ämneskategorier

Data- och informationsvetenskap

DOI

10.4271/2005-01-0060

Mer information

Senast uppdaterat

2020-04-07