logo

Standards Manage Your Business

We Manage Your Standards

SAE

SAE 2009-01-0186 : 2009

Study of the Mechanism of Accessory Drive Belt Noise

Standard Details

The mechanism of noise production in engine accessory drive belts was discussed. Applying geometric considerations to the transversal vibration of the belt, which is one cause of belt noise, the research showed that vibration of the belt is affected by fluctuations in the rotational speed of the crankshaft, and that the amplitude of the vibrations fluctuates cyclically. The cycle of this amplitude fluctuation is synchronous with engine speed, and for a 3-cylinder gasoline engine, its frequency is the (1.5*n) 2x engine rotation order. The spectrum pattern of belt vibration therefore shows components of the natural frequency±(1.5*n) 2x orders. The research demonstrated that at engine speeds at which the natural frequency±(1.5*n) 2x orders and the (1.5*n) 2x order frequencies, the engine excitation orders, are identical, multiple engine orders excite resonance in the belt, producing a high degree of belt vibration.

Cross Reference:

General Information

Status : ACTIVE
Standard Type: Main
Document No: SAE 2009-01-0186 : 2009
Document Year: 2009

Life Cycle

Currently Viewing

ACTIVE
SAE 2009-01-0186 : 2009
Knowledge Corner

Expand Your Knowledge and Unlock Your Learning Potential - Your One-Stop Source for Information!

© Copyright 2024 BSB Edge Private Limited.

Enquire now +