Calculation Method of Diesel Engine Valve System Dynamics Based on Multibody System Transfer Matrix
A technology of system dynamics and transfer matrix, applied in computing, special data processing applications, instruments, etc.
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[0013] In order to describe the technical content, structural features, objectives and effects of the present invention in detail, the following will be described in conjunction with specific embodiments.
[0014] The invention uses numerical simulation to simulate the dynamic performance of the gas distribution system under normal working conditions, and proposes a set of calculation methods from cam profile fitting to dynamic model establishment and solution.
[0015] Here, the intake valve of the RD120 diesel engine under-mounted camshaft valve system is taken as an example. The specific method is as follows:
[0016] (1) First, measure the lift curve of the intake valve cam to obtain the lift curve data table, and perform smoothing processing, then select the discrete curve fitting period (generally 360 degrees) and the number of fitting items N, and use fast Fu Fourier transform (FFT) is used to obtain the fitted complex Fourier transform result, as shown in Equation 1. ...
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