Research of the influence of unsteady operating modes on the output parameters of a timber transporting machine engine
Abstract
The paper presents the results of research aimed at investigating the influence of unsteady load conditions on the dynamic characteristics of a diesel automotive engine of a timber transporting machine. The methodology of semi-fullscale tests of a diesel engine and a laboratory experimental installation for studying the influence of unsteady engine operating modes on its output parameters (Me(f), ω(f), h(f), Po, teg) is offered. The results of researching the influence of the engine unsteady load and speed modes on the output parameters are presented. It is established that for the YaMZ238NB engine, there is a frequency range (f = 0.7...0.9 Hz) of changes in the moment of resistance Mr on the crankshaft, in which the maximum deviation of the main parameters from their average values in comparable steady-state modes is possible. On the basis of the analysis of the amplitude-frequency characteristics of the fuel pump rack oscillations, it is found that in this frequency range (f = 0.7...0.9 Hz) of the Mr change the frequencies of forced oscillations coincide with the natural frequency of the governor's sensitive organ, which brings the engine-governor system to a resonant state
About the Authors
V. S. Baidelyuk
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
31, Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037
Ya S. Goncharova
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
31, Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037
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Review
For citations:
Baidelyuk V.S., Goncharova Ya.S. Research of the influence of unsteady operating modes on the output parameters of a timber transporting machine engine. Conifers of the boreal area. 2023;41(7):623-629.
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