Sources of excitation of piston engine oscillations on suspension at idle mode
Abstract
The article discusses the sources of power disturbance of oscillations of an automobile internal combustion engine in idle modes. The article shows that assumptions about uniform rotation of the engine crankshaft in idle mode do not allow to adequately assess all variable power factors and their contribution to the excitation of engine vibrations on the suspension. Non-uniformity of angular speed of crankshaft caused both by natural features of kinematics of crank mechanism of piston engine and by non-identity of successive working processes in its cylinders significantly changes parameters of variable force factors acting on power unit. Amplitude of force action caused by non-uniformity of angular speed is directly proportional to moment of inertia of flywheel and inversely proportional to number of engine cylinders.
References
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Review
Рецензент: А.Л. Яковенко, канд. техн. наук, доц., МАДИ
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