Flow Noise Reduction upon Quick Opening the Throttle Nippon Soken.Inc

Format:

Conference/Event

Author/Creator:

Nakase, Yoshihiro, author.

Conference Name:

SAE 2001 Noise & Vibration Conference & Exposition (2001-04-30 : Grand Traverse, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2001-01-1429

Access Restriction:

Restricted for use by site license