Feature Extraction from a Crankshaft Instantaneous Speed Signal of an Automotive Power Unit using Cepstrum Analysis

2023-01-0214

04/11/2023

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Event
WCX SAE World Congress Experience
Authors Abstract
Content
Internal combustion (IC) engines are the most common power unit technology found in road vehicles. The process of combustion within IC engines is linked to the output torque and overall powertrain performance. This work presents a method of analysing the parameters of cylinder pressure and crankshaft instantaneous speed signals obtained from a turbocharged, 4-stroke, 4-cylinder, 1.6 Litre, spark ignition, gasoline direct injection engine at various speed and load operating conditions. Whereas cepstrum analysis is used in the present work to extract critical features characterising the combustion process. Cepstrum analysis showed that the location of maximum heat release can be directly obtained from the quefrency of the instantaneous crank speed. This paper presents a systematic scheme for applying cepstrum for obtaining combustion features from the instantaneous crank speed signal.
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DOI
https://doi.org/10.4271/2023-01-0214
Pages
12
Citation
El Yacoubi, I., and Samuel, S., "Feature Extraction from a Crankshaft Instantaneous Speed Signal of an Automotive Power Unit using Cepstrum Analysis," SAE Technical Paper 2023-01-0214, 2023, https://doi.org/10.4271/2023-01-0214.
Additional Details
Publisher
Published
Apr 11, 2023
Product Code
2023-01-0214
Content Type
Technical Paper
Language
English