Experimental Formula of Calculating the Amplitude of Torsional Vibration of Internal Combustion Engine Crankshafts

1952 ◽  
Vol 55 (399) ◽  
pp. 240-246
Author(s):  
TAKEO MATSUI
Keyword(s):  
Internal Combustion Engine ◽  
Torsional Vibration ◽  
Combustion Engine ◽  
Internal Combustion

The Effect of the Damping of the Throws on the Torsional Vibration of the Crankshaft System of an Internal Combustion Engine

1929 ◽  
Vol 33 (227) ◽  
pp. 1086-1087
Author(s):  
J. Morris
Keyword(s):  
Internal Combustion Engine ◽  
Torsional Vibration ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Moment Of Inertia ◽  
Torsional Stiffness ◽  
Direct Drive ◽  
Polar Moment ◽  
R Ratio ◽  
Image Position

In the Journal for October, 1923, I gave the following formulæ for the frequencies in torsional vibration of the crankshaft system (see Fig. 1) of a direct drive engine having equal throws and equal journals, viz.:—1and2where3c=torsional stiffness (the CI/L) of an “equivalent journal”;p=polar moment of inertia of the “equivalent pulley” of a throw;r=ratio of the torsional stiffness of the shaft between the airscrew and the first “ equivalent pulley,” to that of an “ equivalent journal “;n=number of throws.

An Experiment Investigation to the Effect on Measurement Precision of Torsional Vibration

2011 ◽  
Vol 199-200 ◽  
pp. 995-998
Author(s):  
Zhao Cheng Yuan ◽  
Cheng Ming Wu ◽  
Yi Ja Ma ◽  
Xiao Feng Li
Keyword(s):  
Internal Combustion Engine ◽  
Torsional Vibration ◽  
Combustion Engine ◽  
Gear Wheel ◽  
Internal Combustion ◽  
Measurement Precision ◽  
Measurement Instruments ◽  
Rotary Machine ◽  
Usual Test

Tortional vibration is a common phenomena in the rotary machine such as internal combustion engine. The measurement of tortional vibration is an usual test in the engine experiments. In this paper, the influences of some parameters of measurement instruments such as teeth number and diameter of gear wheel were investigated by experiment approach. Some useful results to guarantee the precision of measurement were obtained.

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