Transactions of Society of Automotive Engineers of Japan
Online ISSN : 1883-0811
Print ISSN : 0287-8321
ISSN-L : 0287-8321
Technical Paper
Formulation of a Simple Compensation Model for Diesel Cylinder Pressure Sensor by Analyzing Effects of Deposit on Sensing Performance (First Report)
- Modeling -
Noriyasu AmanoToru SaitoKouseki SugiyamaAkio Matsunaga
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2018 Volume 49 Issue 5 Pages 894-899

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Abstract

Exhaust emissions and combustion stability of diesel engines can be improved by feedback control using a cylinder pressure sensor (CPS). However output of the CPS can deteriorate due to deposits on the sensor. To address this issue, an on-board model was developed to compensate CPS output based on the spring-mass-damper model. Young's modulus of the deposit causes a variation of the spring constant and resulting degradation of the signal level. Deposit porosity leads to a variation of the damper constant and resulting signal delay. The proposed model based on the analysis can estimate the cylinder pressure with the required accuracy for the feedback control.

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© 2018 Society of Automotive Engineers of Japan, Inc.
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