A small internal combustion engine crankshaft system simulation device and simulation method

Abstract

The invention discloses a small internal combustion engine crankshaft system simulation device and a simulation method thereof. The device comprises: an installation platform, a servo motor, a driving crankshaft, a left connecting rod, a double-headed cylinder, a right connecting rod, a driven crankshaft and a flywheel; a servo motor Both ends of the main journal of the driving crankshaft are installed on the installation platform through bearings and bearing seats; the main journal of the driving crankshaft is coaxially connected with the output shaft of the servo motor, and the two can rotate synchronously; The connecting rod journal of the driving crankshaft is hinged with one end of the left connecting rod; the other end of the left connecting rod is hinged with the main piston rod of the double-headed cylinder; the two ends of the main journal of the driven crankshaft are installed on the installation platform through bearings and bearing seats; The main journal of the driven crankshaft is coaxially connected with the flywheel, and the two can rotate synchronously; the connecting rod journal of the driven crankshaft is hinged with one end of the right connecting rod; the other end of the right connecting rod is hinged with the slave piston rod of the double-headed cylinder; the present invention It can truly simulate the crankshaft system of an internal combustion engine and meet the requirements of equivalence.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine power simulation systems, and in particular relates to a small internal combustion engine crankshaft system simulation device and a simulation method thereof. Background technique [0002] With the continuous strengthening of power, it is the focus of internal combustion engine research to carry out the research on the characteristics of internal combustion engine crankshaft system, such as rigidity, torsional vibration and lubrication. The existing relatively common research methods are mainly numerical simulation and test bench testing. Numerical simulation method is mainly based on numerical analysis software, input model parameters, set boundary conditions and solve related parameters; its main disadvantage is that the parameter setting of simulation software is relatively ideal, and the influence of some environmental factors and material characteristic parameters is not con...

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Problems solved by technology

However, since the test bench uses the continuous output of the motor to drive the crankshaft to rotate, it does not match the gas explosion pressure and the driving effect of the flywheel on the crankshaft in the actual situation, and does not consider the fluctuation of the crankshaft speed under different strokes. Accurate, there is a large deviation from the actual situation, and the requirement of equivalence with the actual internal combustion engine crankshaft system is not met

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