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Detection of Combustion Properties in a Diesel Engine using Block Mounted Accelerometers

Ingemar Andersson (Institutionen för signaler och system, Signalbehandling) ; Tomas McKelvey (Institutionen för signaler och system, Signalbehandling) ; Martin Larsson (Institutionen för 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). Vol. 19 (2014), p. 11866-11871.
[Konferensbidrag, refereegranskat]

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.

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Denna post skapades 2014-09-15. Senast ändrad 2015-12-07.
CPL Pubid: 202758