Direct derivation of the two-shaft system balance conditions for the second order reciprocal inertia forces on the V-type eight cylinders internal combustion engines with a plane crankshaft

1980 ◽  
Vol 1 (2) ◽  
pp. 247-263
Author(s):  
Liu Hsien-chih
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Second Order ◽  
Combustion Engines ◽  
Direct Derivation ◽  
Shaft System ◽  
Inertia Forces

scholarly journals Analysis of balancing of six-cylinder in-line two-stroke internal combustion engines

2009 ◽  
Vol 139 (4) ◽  
pp. 22-33
Author(s):  
Ryszard MOSAKOWSKI
Keyword(s):  
Comparative Analysis ◽  
Internal Combustion Engines ◽  
Second Order ◽  
Combustion Engines ◽  
Connecting Rod ◽  
Moments Of Inertia ◽  
First Order ◽  
L Value ◽  
The Moment ◽  
Inertia Forces

Simple relations describing the resultant moments of inertia forces of the first and second order for all sixty possible configurations of the crankshaft in two-stroke four-cylinder engine have been derived in the paper. A comparative analysis of the crankshafts with different arrangements of cranks have been carried out with respect to the resultant moments of the first and second order inertia forces. The comparison has been carried out for two values of the crank throw to connecting rod length ratio, namely l = 0.3 and l = 0.5. The outcomes of the comparative analysis indicate that irrespective of the l value, within the range of its values having practical meanings, the arrangement of cranks 1-5-3-4-2-6 is the best. As a result of 50% balancing of the moment of the first order inertia forces the differences between various configurations of the crankshaft are significantly reduced and configuration 1-4-2-6-3-5 equals with respect to balancing with the commonly used configuration 1-5-3-4-2-6.

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