ECU Integrated DSP Based Measurement System for Combustion Analysis

Paper #:
  • 2000-01-0547

Published:
  • 2000-03-06
Citation:
König, D., "ECU Integrated DSP Based Measurement System for Combustion Analysis," SAE Technical Paper 2000-01-0547, 2000, https://doi.org/10.4271/2000-01-0547.
Author(s):
Affiliated:
Pages:
7
Abstract:
For development of new engines a ‘general purpose ECU’ for spark ignition engines with up to 12 cylinders has been developed. As part of this ECU a DSP (Digital Signal Processor)-based measurement unit for high frequency combustion analysis has been integrated. In this paper, details about this signal processing platform are given. The DSP-unit has 24 analog input channels. 12 channels are used for cylinder pressure measurement; the other 12 channels are general purpose ones. For example, they can be used for ionic current analysis. Additional digital inputs allow measurement of crank speed and crank speed variations. This is an important topic for misfire detection as part of the OBD regulations.
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