This content is not included in your SAE MOBILUS subscription, or you are not logged in.
The Effect of Engine Build Options on Powerplant Inertias
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1990 by SAE International in United States
Annotation ability available
Accurate powerplant inertia information is important for noise, vibration, and harshness (NVH) simulation and analysis of vehicle dynamics, both for engine mount systems in isolation and as part of vehicle system models. Because of the amount of effort involved in experimentally testing for the inertia properties of an automotive powerplant, typical practice is to test a single build variation of that powerplant. This inertia property information is then used to approximate the powerplant inertia properties of the other build conditions.
This paper evaluates the effect of powerplant build options on powerplant inertia properties. An analytical approach is used, where powerplants are assembled analytically from a database of component inertia information, and the powerplant inertia properties determined. Powerplant inertia property results for a set of four cylinder, in-line powerplants, with different build options, are presented. Additional data are presented demonstrating the effect on the powerplant inertia property results of representing some components as point masses instead of as distributed masses.
From the results it can be concluded that powerplant build options significantly change powerplant inertia properties. Further, the results show that it is the spatial distribution of components as point masses that has the most significant effect on powerplant inertias.
|Technical Paper||Influence of Chassis Flexibility on Dynamic Behavior of Engine Mount Systems|
|Technical Paper||Spindle Load Application for NVH CAE Models by Using Principal Vector Approach|
CitationResh, W., "The Effect of Engine Build Options on Powerplant Inertias," SAE Technical Paper 900457, 1990, https://doi.org/10.4271/900457.
- “Designing Engine Mount Systems for Vibration Isolation” Hill D. H. 6th Annual Institute of Noise Control in Internal Combustion Engines University of Wisconsin Madison January 18 1974
- “Measurement of Rigid Body Modes for Dynamic Design” Okubo N. Furukawa T. Proceeding of the Second International Modal Analysis Conference 1983 545 549
- “Rigid Body Mass Properties from Test Data” Bretl J. Conti P. Proceedings of the Fifth International Modal Analysis Conference London 1987
- “Application of Direct System Identification Method for Engine Rigid Body Mount System” Butsuen T. Ookuma M. Nagamatsu A. SAE # 860551
- Vector Mechanics for Engineers-STATICS Third Edition Beer F. P. Johnston, E. R. Jr. McGraw-Hill 1977
- “Program MASPRP Primer” Resh W. F. Stasek K. W. Chrysler Corporation
- “Program MASPRP Manual” Resh W. F. Stasek K. W. Chrysler Corporation
- “Front Wheel Drive Engine Mount Optimization” Geck P. E. Patton R. D. SAE # 840736
- “Computer Optimization of Engine Mounting Systems” Johnson S. R. Subhedar J. W. SAE P-79, # 790974
- “Design Considerations in Engine Mounting” Timpner F. F. SAE #966B 1965