0
research-article

MODELING THE INERTIAL TORQUE IMBALANCE WITHIN AN INTERNAL COMBUSTION ENGINE: QUANTIFYING THE EQUIVALENT MASS APPROXIMATION

[+] Author and Article Information
Noah Manring

Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211
manrinn@missour.edu

Muslim Ali

Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211
mma26b@mail.missouri.edu

1Corresponding author.

ASME doi:10.1115/1.4039282 History: Received January 10, 2017; Revised October 31, 2017

Abstract

The objectives of this research are to explore the inertial-torque characteristics of an inline, internal combustion engine with connecting-rod joints that are evenly spaced about the centerline of the crankshaft, and to evaluate the goodness of a mass approximation that is customarily used in machine design textbooks. In this research the number of pistons within the internal combustion engine is varied from 1 to 8. In order to generalize the results, the inertial-torque equations are nondimensionalized and shown to depend upon only four nondimensional groups, all related to the mass and geometry properties of the connecting rod. As shown in this research, the inertial-torque imbalance is greatest for an engine with 2 pistons, and that a dramatic reduction in the torque imbalance may be obtained for engine designs that use 4 or more pistons. It is also shown in this paper that the customary mass approximations for the connecting rod may be used to simplify the analysis for all engine designs without a significant loss of modeling accuracy.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In