1995-05-01

An Analytical Method for Determining Engine Torque Harmonics for Use With Up Front CAE 951248

An analytical method for determining engine torque harmonics is presented. The approach employs an engine cycle simulation model to calculate instantaneous cylinder pressure for each operating condition based on engine characteristics that can be determined experimentally and/or analytically. Cylinder pressure is converted to instantaneous torque from which harmonics are determined using an FFT algorithm. A description of the cycle simulation model, including required data, is presented. The method is validated by presenting correlation results at a number of operating conditions (i.e. engine speeds and loads) comparing analytical versus test driveline torque harmonics. Finally, limitations in the method as well as possible extensions to the method are discussed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Mechanical Cushion Design Influence on Cylinder Dynamics

2005-01-3631

View Details

TECHNICAL PAPER

An Experimental and Computational Investigation of Water Condensation inside the Tubes of an Automotive Compact Charge Air Cooler

2016-01-0224

View Details

TECHNICAL PAPER

Characterization of the Dynamic Response of a Cylinder Deactivation Valvetrain System

2001-01-0669

View Details

X