Controlling the timing chain noise in diesel engines. (29th December 2005)

• Record Type: Journal Article
• Authors: Calvo, J.A.; Diaz, V.; San Roman, J.L.; Ramirez, M.
• Is Part Of: International journal of vehicle noise and vibration. Volume 2:Number 1(2006)
• Page Start: 75
• Page End: 90
• Publication Date: 2005-12-29
• Subjects: timing chain noise -- vibration -- whine noise -- frequency analysis -- order tracking -- 1/3 octave -- acceleration sensors -- engine speed -- noise control -- vehicle noise -- diesel engines -- meshing noise -- assembly process variation -- sound quality -- acoustic quality; Automobiles -- Noise -- Periodicals; Automobiles -- Vibration -- Periodicals; 629.231
• Languages: English
• ISSNs: 1479-1471

Abstract

Timing drive by chain is commonly used in passenger cars especially in diesel engines with double overhead camshafts owing to their numerous advantages compared with belt drive systems. However, one of the important subjects to take into account is the timing chain noise, so-called "meshing noise" that can be perceived by the driver. The manufacturer's efforts to reduce it, are focused on reducing the sprocket-chain vibrations (Young et al., 2003), improving chain performances (www.smartchain.nl), and modifying the resonance frequencies of related parts (Sopouch et al., 2003). However, these efforts could be compromised due to assembly process variation. In this paper, a procedure to assess and control the timing chain noise variation has been suggested.