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New Approach to Low-Noise Air Intake System Development
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English
Abstract
Recently, the quietness of the passenger compartment has become an important quality for a vehicle, and as a result, various improvements have been made to reduce the passenger compartment noise level. Particularly engine noise, a major source of interior noise, has been studied for many years and has recently been reduced to an acceptable level. As a result, air intake noise, which was a relatively minor noise source in the past, has rapidly become a noticeable noise source.
This paper describes a newly developed air intake system testing apparatus, which enables us to evaluate intake noise at an early stage of engine development and also describes how the new apparatus and approach was used to develop a low-noise air intake system.
This apparatus, called the PULSATION SIMULATOR, reproduces intake pulsations in the actual engine using its cylinder head and reproduces intake air flow precisely. Generally, in the past, intake system development was conducted by giving priority to engine volumetric efficiency. By the use of the apparatus, however, study for intake noise reduction can be started at an early stage of engine development and in parallel with the study of volumetric efficiency. Thus, the apparatus enables us to establish intake system designs which satisfy both the volumetric efficiency and intake noise requirements at an earlier stage than ever before.
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Authors
Citation
Nishio, Y., Kohama, T., and Kuroda, O., "New Approach to Low-Noise Air Intake System Development," SAE Technical Paper 911042, 1991, https://doi.org/10.4271/911042.Also In
References
- Kuroda O. Fujii Y. “An Approach to Improve Engine Sound Quality” SAE Paper 880083 1988
- Sasaki Y. Taguchi M. Ono A. “A Study on Engine-Caused Abnormal Noise of Automobiles at Acceleration” Technical Review of Mitsubishi Heavy Industry 18 1 1981 69 75
- Tsuge K. Kanamaru K. Kido T. Masuda N. “A Study of Noise in Vehicle Passenger Compartment during Acceleration” SAE Paper 850965 1985
- Suzuki T. Kayaba F. “The Analysis and Mechanism of Engine ‘Intake Rumbling Noise’” SAE Paper 901755 1990
- Saito K. Nagasawa H. “Development of Acoustic Characteristics Analyzing Method for Air Intake Systems” Nissan Diesel Technical Review 51 1989 30 32
- Fukano T. Kouno I. “Noise Reduction by a Helmholtz Resonator” Transactions of the Japan Society of Mechanical Engineers B ( 1987 3034 3037