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Reduction of Noise and Vibration in Compact Car Engine Mount System

Article of Honda R&D Technical Review Vol.17 No.2

Summary

A new engine mount system has been developed to enhance noise and vibration performance and driving comfort, and thus increase competitiveness, in the next generation compact car. The basic system configuration is a principal axis of inertia type mounting system with torque rods that display excellent vibration isolation performance. In addition, the following were employed as guidelines for system characteristics in order to maximize performance. (1) Rod transmission characteristic that increases vibration isolation, to reduce booming noise and engine noise. (2) Rod mounting direction that reduces body shaking when the accelerator pedal is employed. (3) Control of engine rigid body vibration modes to increase driving comfort. (4) Dynamic stiffness of mounting points to reduce engine noise. The achievement of these characteristics has enabled the development of an engine mount system for a highly competitive compact car platform.

Reference

(1) Hiruma, M., Nonaka, S., Katou, Y., Noguchi, Y., Igami, H.: Countermeasures against Noise and Vibration in Direct Injection Diesel Engine, Honda R&D Technical Review, Vol. 16, No. 2, p. 121-126
(2) Kuno, Y., Naruse, T.: Development of Optimization Method of Power Plant Mounting System for Front-Wheel-Drive Vehicles, MAE Technical Report, No. 9 (2000)
(3) Ishihama, M., Satoh, S., Seto, K., Nagamatsu, A.: Vehicle Vibration Reduction by Transfer Function Phase Control on Hydraulic Engine Mounts, JSME International Journal, Series C, Vol. 37, No. 3 (1994)
(4) Katagiri, Y., Yatani, H., Igami, H., Saitou, H., Shiraki, T., Oomori, I.: Research on Longitudinal Vibration of MT Vehicle during Acceleration, Honda R&D Technical Review, Vol. 15, No. 2, p. 139-144
(5) Kawabe, H., Kanai, R., Ishimatsu, K., Motoi, M., Kodama, A.: Improvement of the Fore and Aft Vehicle Vibration under Acceleration and Deceleration Condition, SUBARU Technical Review, Vol. 30 (2003)
(6) Sakai, T., Miyahara, T.: Reduction of Engine Noise in New Accord Using Hybrid CAE Technology, JSAE 20025453, No. 86-02

Author (organization or company)

Hiroshi YANAGASE(Tochigi R&D Center)、Tsutomu TAMURA(Tochigi R&D Center)、Hiroyuki TAKABAYASHI(Tochigi R&D Center)、Sumito IKEBATA(Tochigi R&D Center)

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