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Enhanced Diagnosis for Small Engines
Published November 05, 2017 by Society of Automotive Engineers of Japan in Japan
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Small engines for non-automotive and two wheeler applications have a reduced number of sensors. For fulfilling emission regulations a cost effective way is an enhanced use of standard sensors in order to obtain more information from the existing sensors. The delivered information can then be used for an on-board diagnosis. Moreover, it is important to control the quality of the product during engine production; therefore an end-of-line cold engine test is often made. With this measure it is possible to detect faults, wrong tolerances or assembly in order not to deliver faulty engines to the customers.
In this paper, an enhanced use of sensors for fault detection will be discussed. It is possible to obtain more information from the signal or to use the sensor for detecting other parameters. For extracting information signal analysis methods will be used with focus on the computational power need since the ECU performance is limited. The starter motor current is a useful indicator for detecting a lack of compression in an end-of-line check. Furthermore, it is possible to assign the fault to a specific cylinder by using one single sensor. It has to be considered that different faults have the same influence on the analyzed signals. Particular attention is put on the cylinder imbalance detection.
|Technical Paper||Model Based Fault Diagnosis of the Intake and Exhaust Path of Turbocharged Diesel Engines|
|Technical Paper||Closed-Loop Electronic Fuel and Air Control of Internal Combustion Engines|
- Riccardo Basso - IVT, Graz University of Technology
- Hans-Jürgen Schacht - IVT, Graz University of Technology
- Schmidt Stephan - IVT, Graz University of Technology
- Roland Kirchberger - IVT, Graz University of Technology
- Matthias Rath - EMT, Graz University of Technology
- Markus Neumayer - EMT, Graz University of Technology
- Christian Reisenberger - BRP-Powertrain GmbH & Co KG
CitationBasso, R., Schacht, H., Stephan, S., Kirchberger, R. et al., "Enhanced Diagnosis for Small Engines," SAE Technical Paper 2017-32-0065, 2017.
Data Sets - Support Documents
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