Assessment of diesel combustion noise overall level in transient operation
Combustion noise in passenger cars powered with direct injection (DI) diesel engines is frequently the main reason why end-users are reluctant to drive this type of vehicle. Thus, the great potential of diesel engines for environment preservation — due to their lower CO 2 emissions — could be missed...
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| Published in: | International journal of automotive technology Vol. 10; no. 6; pp. 761 - 769 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Heidelberg
The Korean Society of Automotive Engineers
01-12-2009
Springer Nature B.V 한국자동차공학회 |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Combustion noise in passenger cars powered with direct injection (DI) diesel engines is frequently the main reason why end-users are reluctant to drive this type of vehicle. Thus, the great potential of diesel engines for environment preservation — due to their lower CO
2
emissions — could be missed. This situation worsens with the current design trends (engine downsizing) and the emerging new diesel combustion concepts (Homogeneous Charge Compression Ignition-HCCI, Premixed Charge Compression Ignition-PCCI, etc.), which are intrinsically noisy. This negative feature can be even more critical in transient operation due to the contribution of the temporal changes of both source and transmission path on engine noise. Therefore, combustion noise must be considered as an additional essential factor in engine development, together with performance, emissions and driveability. Thus, suitable evaluation procedures that can be integrated into the global engine development process in a timely and cost-effective manner are imperative. Regarding the evaluation procedures, most of the work available in the literature addressed combustion noise at steady operation. To surpass this limitation, two possible approaches — adapted from the classical and multiple regression methods — for the overall level assessment of combustion noise in transient conditions are evaluated in this paper. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 G704-001462.2009.10.6.014 |
| ISSN: | 1229-9138 1976-3832 |
| DOI: | 10.1007/s12239-009-0089-y |