MATEC Web Conf.
Volume 226, 2018XIV International Scientific-Technical Conference “Dynamic of Technical Systems” (DTS-2018)
|Number of page(s)||5|
|Section||1 Fundamentals of mechanics, dynamics and tribology of machines|
|Published online||07 November 2018|
Numerical cam profile design with tappet constant speed section in internal combustion engine valve gear and fuel system
1 Department of heat engineering and hydraulics, Volgograd State Technical University, 400005 Volgograd p. Lenina 28, Russian Federation
2 Department of Information Security, Institute of priority technologies, Volgograd State University, 400062 Volgograd p. Universitetsky 100, Russian Federation
* Corresponding author: firstname.lastname@example.org
In modern internal combustion engines the drive of valves of the mechanism of gas distribution and a plunger of the fuel pump of high pressure is carried out by the cam mechanism. The functional requirement imposed to gas distribution mechanism cams is receiving the greatest valve “time-section” when ensuring working capacity and reliability of the valvate drive. One of the main directions of improvement of fuel pumps of high pressure of diesel engines is increase in the maximum pressure of injection. In this work it is offered to improve a numerical method by imposition of the restriction on the first derivative of movement of the pusher on a cam angle of rotation, that is a pusher speed analog. This restriction allows to receive a cam with the site of constant maximum speed of the pusher. It allows to increase the maximum pressure of injection.
© The Authors, published by EDP Sciences, 2018
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