Presentation of a Software-Based Sensing Approach, which Enables a Full Diesel-Bio-Diesel Flex Fuel Capability by use of an Integral Key-Parameter Technique

Paper #:
  • 2013-36-0182

Published:
  • 2013-10-07
DOI:
  • 10.4271/2013-36-0182
Citation:
Pontoppidan, M. and Montanari, G., "Presentation of a Software-Based Sensing Approach, which Enables a Full Diesel-Bio-Diesel Flex Fuel Capability by use of an Integral Key-Parameter Technique," SAE Technical Paper 2013-36-0182, 2013, doi:10.4271/2013-36-0182.
Affiliated:
Pages:
11
Abstract:
The paper gives a short introduction to the bio-diesel mixture approach for diesel engines.The paper continues with a description of the design of a strategy for recognition of a random bio-diesel fraction, Bx, by a purely software-based sensing technique, which creates an image of the temporal combustion behavior and uses only sensors already in service for current common rail mixture preparation systems.A short description is made of a baseline approach of sensing technique based on the presence of a crank angle speed sensor. Hereafter the paper presents the introduction of several integral or Upper Level (UL) key-parameters used to enhance the precision of the Bx-detection or completely replace the original lower level combustion key-parameter set, which relates the instantaneous fraction of bio-diesel, Bx, to the engine torque.The paper concludes presenting a series of experimental verification data obtained on a large-scale series produced 1.3 liter Turbo CR-rail passenger car engine.
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