SI-Engine Cylinder Pressure Estimation using Torque Sensors
Paper in proceedings, 2004

In order to maximise engine efficiency it is of interest to find the peak pressure position (PPP) of the cylinder pressure when controlling combustion engines. Cylinder mounted pressure sensors can be used to measure the pressure, but these are expensive and suffer from limited durability. Alternative pressure estimation methods using cheaper and more durable sensors are needed. This paper shows the performance when estimating the cylinder pressure of a five cylinder SI-engine using a crankshaft integrated torque sensor. An engine model is constructed to be able to eliminate the torsional resonances in the sensed torque signal and the cylinder pressure is reconstructed using a parameterised pressure model. The performance of the estimator is studied in three different simulation cases. Finally, the performance based on measured torque is presented. Copyright © 2004 SAE International.

Combustion engines

Estimation

Torque meters

Engine cylinders

Crankshafts

Author

Stefan Larsson

Chalmers, Signals and Systems, Control and Automation Laboratory

Stefan Schagerberg

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Signal Processing

SAE Technical Paper Series 2004-01-1369, Detroit, MI, USA

Vol. 2004 01 1369

SAE 2004 World Congress & Exhibition
Detroit , USA,

Subject Categories

Mechanical Engineering

Computer and Information Science

DOI

10.4271/2004-01-1369

More information

Latest update

4/15/2020