This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Flow Noise Reduction upon Quick Opening the Throttle
Technical Paper
2001-01-1429
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With the advance in modularization of engine parts in recent years, there is increased use of plastic-made products in air intake systems. Plastic-made intake manifolds (Fig. 1) provide many advantages including reduced weight, reduced cost, and lower intake air temperatures. However, these manifolds have one disadvantage when compared with conventional aluminum-made intake manifolds, in that they transmit more noise because of their lower material density. For example, plastic intake manifolds of early development often generate flow noise when the throttle is opened quickly. With conventional aluminum intake manifolds, this flow noise had generated, but was not heard. This flow noise is presumed to be generated because of high-speed airflow generated when the throttle is opened quickly, but the mechanism of this noise generation has not been clarified. This paper discusses the mechanism of flow noise generation upon quick opening of the throttle, and the methods devised by the authors that can reduce flow noise.
Recommended Content
| Technical Paper | DYNAMIC BALANCING OF ROTATING PARTS |
| Technical Paper | APPLYING HARD THIN COATINGS TO TAPPETS TO REDUCE FRICTION |
| Technical Paper | Source Identification Using an Inverse Visible Element Rayleigh Integral Approach |
Authors
Citation
Nakase, Y., Kanehara, K., Ohara, K., Yamamoto, K. et al., "Flow Noise Reduction upon Quick Opening the Throttle," SAE Technical Paper 2001-01-1429, 2001, https://doi.org/10.4271/2001-01-1429.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Mallick P.K. dal P. “Investigation of Thermoforking as a Method of Manufacturing Plastic Air Intake Manifolds” SAE 2000-01-0045
- Daly Paul Vanderveen Jim “Development of a Plastic Throttle Body” SAE 2000-01-0046
- Sievewright Glenn “Air Flow Noise of Plastic Air Intake Manifolds” SAE 2000-01-0028
- Sievewright Glenn Philip “Noise Optimization of Plastic Air Intake Manifolds” SAE 980273
- kraft W.W. “The Reduction of Air-Rush Noise in Plastic Engine Intake Manifolds” SAE 2000-01-0044
- Alsemgeest R. shaw C.T. Richardson S.H. Pierson S. “Modeling the Time-Dependent Flow Thyough a Throttle Valve” SAE 2000-01-0659
- Pursifull Ross Kotwicki Allan J. Hong Sulgi “Throttle Flow Characterization” SAE 2000-01-0571
- Smithson James F. “Thermoplastic Materials for Throttle Body Applications” SAE 1999-01-0316
- Tani Ichiro et al. “Advance of Fluid Dynamics Turbulent Flow” 1980 221 239
- Fukuda Motokazu et al. “Noise abatement and Design for noise reduction” 1979 245 248
- Arakawa Tadaichi et al. “Computer Fluid Dynamics” 98 102
- Takahashi Ryoichi et al. “Computer Fluid Dynamics”
- Nakamura Ikuo “The turbulent flow” 1992