The dependencies of the crankshaft resistance torque of a reciprocating engine, primarily on its rotational speed, have been characterized. Two ranges of crankshaft rotational speed were identified and analyzed: the range of low, starting speed forced by the starter during crankshaft driving, and the rotational speed of a functioning engine. Analytical formulas describing the dependencies of the starting resistance torque and the characteristics of the variation in average speed and resistance torque of the shaft driven by the starter were presented. The results of studies characterizing the variation of the engine resistance torque in the range of high speed values were presented. The reasons for the different dependence of the resistance torque on the rotational speed in the mentioned ranges of its values were indicated.The occurrence of forces and force moments is associated with various types of interactions of bodies in nature, which are the cause of motion resistance. The basic types of interactions – sources of resistance include: (…)
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Source: Logistyka Magazine
Resistance torque of a reciprocating internal combustion engine – PDF file for download