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NVH Optimization of HMC 3.0L V6 Diesel Engine
Technical Paper
2007-01-2371
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Hyundai has developed a brand new 3.0L V6 diesel engine for luxury vehicle with electronic VGT, piezo injector and bedplate block structure. In addition to challenging targets for fuel consumption and emission levels, engine specifications were focused on performance and NVH. This paper presents the detailed process of reinforcing engine components such as block, cylinder head and oil pan in view of low sound pressure and high quality. Generally, the fast reaction speed of piezo injector can improve the emission, but it usually causes injector noise. We reduced this noise through developing new ECU logic and isolating this part with noise reduction foam. In addition to that, we could reduce the combustion noise using DoE method for the optimization of injection parameters considering the emission and fuel economy. As a result of these attempts, 3∼4dBA of overall sound pressure level from engine itself could be reduced without any loss of fuel economy and power characteristics. Finally, this paper also presents the countermeasures for turbocharger noises (whine, surge and air flow noise), auxiliary belt noise, chain noise and cam gear noise.
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Authors
- Woo-Hee Kwak - Hyundai Motor Company & Kia Motors Corporation
- Hyung-Shin Kim - Hyundai Motor Company & Kia Motors Corporation
- In-Soo Jung - Hyundai Motor Company & Kia Motors Corporation
- Dong-Kyu Yoo - Hyundai Motor Company & Kia Motors Corporation
- Koo-Tae Kang - Hyundai Motor Company & Kia Motors Corporation
Topic
Citation
Kwak, W., Kim, H., Jung, I., Yoo, D. et al., "NVH Optimization of HMC 3.0L V6 Diesel Engine," SAE Technical Paper 2007-01-2371, 2007, https://doi.org/10.4271/2007-01-2371.Also In
References
- Renner, G. Koyannagi, K. Maly, R. R. 1998 “Effect of Common Rail Injector Design in the Emission Characteristics of Passenger Car DI Engines,” The 4th International Symposium COMODIA 98 477 482
- Morita, K. 2003 Automotive Power Source in 21st Century
- Durnholz, M. Endres, H. Frisse P “Preinjection: A measure to Optimize Emission Behavior of DI-Diesel Engine” SAE Paper 940674
- Augustin, U. Schwarz, V. “Low-Noise Combustion With Pilot Injection” Truck Technology International 1991