Detection of Combustion Properties in a Diesel Engine using Block Mounted Accelerometers
Paper i proceeding, 2014

Engine block mounted accelerometers was used for estimating combustion phasing parameters for a heavy duty diesel engine. Several sensor locations were evaluated for its sensitivity to combustion related vibrations and mechanical noise. One sensor-cylinder combination was selected for the evaluation of a simple algorithm to detect 10% and 50% burned mass fraction. The algorithm uses the accumulated accelerometer vibration energy as a base for extracting the 10% and 50% points respectively. The results show that the angular positions for 10% and 50% burned mass fraction can be estimated with precisions of 1.5 and 3 CAD respectively. It is also concluded that the early part of the accelerometer signal has a significant influence from a mechanical noise source related to the start of injection.


Ingemar Andersson

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Tomas McKelvey

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Martin Larsson

Chalmers, Tillämpad mekanik, Förbränning

19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014; Cape Town; South Africa; 24 August 2014 through 29 August 2014

1474-6670 (ISSN)

Vol. 19 11866-11871


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