Browse Publications Technical Papers 2000-05-0281
2000-06-12

Analysis of the Influence of Crankshaft Vibration Upon the Instantaneous Flywheel Speed 2000-05-0281

Momentary flywheel speed is the most convenient signal to detect cylinder-by-cylinder variations. Though some papers had indicated that torsional vibration of crankshaft should be considered at high-speed condition [1][2][3], it is still not very clear how to quantitatively analyze the influence of the vibration upon the flywheel speed. The goal of this paper is to reveal the influence and to find a way to compensate it. At first the transform functions of each cylinder torque to flywheel speed are analyzed. Then based on the transform functions, rigid crankshaft model and flexible crankshaft model are compared. The influence of the torsional vibration on the flywheel speed is investigated. Finally, a compensator of the influence is built. The compensator is verified by the simulation results. After compensation, the measured flywheel speed can be processed under the rigid crankshaft model.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Engine Diagnostics by Dynamic Shaft Measurement: A Progress Report

932412

View Details

TECHNICAL PAPER

Analytical Study on Engine Noise Caused by Vibration of the Cylinder Block and Crankshaft

830346

View Details

TECHNICAL PAPER

Influence of Crankshaft-Pulley Dimensions on Crankshaft Vibrations and Engine-Structure Noise and Vibrations

931303

View Details

X