Inertia
Instantaneous angular speed fluctuations of thermal engines - Focus on 3-cylinder engine and comparison with 4-cylinder engine

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Inertia
Instantaneous angular speed fluctuations of thermal engines - Focus on 3-cylinder engine and comparison with 4-cylinder engine

Authors : Elian BARON, Jean-Louis LIGIER

Publication date: April 10, 2020 | Lire en français

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5. Inertia

The purpose of this paragraph is to provide the reader with orders of magnitude for the main rotary inertias of the components making up the mobile coupling, i.e. the flywheel, clutch mechanism, crankshaft, timing pulley, connecting rod and piston.

5.1 Flywheel and clutch mechanism

These two elements are interdependent, which is why we have chosen to group them together in the same paragraph. The inertia values shown are taken from recent applications (3 and especially 4 cylinders), the number of which is sufficient to derive "first-order" laws that can be used at first glance by the automotive engineer or technician (in each case, uncertainties are of the order of 5%).

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