This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Single Cylinder Diesel Engine Mount Configuration for Reduced Vibration in a Three-Wheeled Vehicle
Technical Paper
2014-32-0123
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The diesel power train (engine and transmission) is the most significant mass contributor in a three- wheeled vehicle. High idling vibrations from the engine get transmitted to the structure and the body panels through the engine mounts. Isolation of these vibrations by proper design of rubber mounts is the most effective engineering approach to improve ride quality of vehicle. In the present study, a mathematical model of the powertrain and mount system is developed; with the engine and transmission being assumed to behave as a rigid body (6 degrees-of-freedom) and the compliance comes from the mounts. As a first step, the modes and natural frequencies are obtained. Following this the response to unbalanced inertial forces for an excitation frequency range of 20-60 Hz (1200-3600 rpm) has been obtained. The model is validated by comparing its results with results of previous published research work. Also, motoring experiments are conducted on a baseline configuration to obtain the vibration response at mounts and mode shapes through ODS (Operational Deflection Shape) for validating the math model. A detailed parametric study is conducted and a new combination of mount system design variables were arrived as proposed solution which in comparison with baseline configuration showed that the vibration response reduces by 40% at idling and 60% in the engine operating range. Experiments conducted on the improved design show similar improvement. Thus, using this validated analytical math model, a closer-to-optimal design can be obtained with minimal dependency on iterative experimental methods which are costlier and time consuming.
Recommended Content
Authors
Citation
Kuduva Shanthulal, V., Marudachalam, K., Pattabiraman, V., Jabez Dhinagar, S. et al., "Single Cylinder Diesel Engine Mount Configuration for Reduced Vibration in a Three-Wheeled Vehicle," SAE Technical Paper 2014-32-0123, 2014, https://doi.org/10.4271/2014-32-0123.Also In
References
- Spiekermann , C.E. , Radcliffe , C.J. and Goodman , E.D. Optimal Design and Simulation of Vibrational Isolation Systems Journal of Mechanical Design 107 2 271 276 1985 10.1115/1.3258720
- Timpner , F. Design Considerations in Engine Mounting SAE Technical Paper 650093 1965 10.4271/650093
- Ashrafiuon , H. Design Optimization of Aircraft Engine-Mount Systems Journal of Vibration and Acoustics 115 4 463 467 1993 10.1115/1.2930373
- Park , J. and Singh , R. Effect of Engine Mount Damping on the Torque Roll Axis Decoupling SAE Technical Paper 2007-01-2418 2007 10.4271/2007-01-2418
- Park , J. and Singh R. Effect of Non-proportional Damping on the Torque Roll Axis Decoupling of an Engine Mounting System Journal of Sound and Vibration 313 3-5 841 857 2008 10.1016/j.jsv.2007.12.007
- Suh , M.W. , Shim , M.B. , Kim , M.S. and Hong , S.K. Multidisciplinary design optimization of engine mounts with consideration of the driveline Proceedings of Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 217 2 107 114 2003 10.1177/095440700321700204
- Ambardekar , M.N. , Patil , A.B. and Jahagirdar , A.P. Vibration Control of a Diesel Auto-Rickshaw using Low-cost Passive Engine-Mounts SAE Technical Paper 972081 1997
- Norton , R.L. Design of Machinery - An Introduction to the Synthesis and Analysis of Mechanisms and Machines WCB/McGraw Hill Boston 9780070483958 1999
- Inman , D.J. Engineering Vibration Prentice-Hall New Jersey 9780130174482 2001