Abstract
The article discusses substantiating the parameters brake system of a tractor-trailer (TT). The section offers a comparative analysis of theoretical and experimental studies of the TT brake drive and the parameters of its elements. Based on that, ordinary differential equations were solved by the Runge - Kutta method, the first-order accuracy (Euler's method). To solve partial differential equations, we used a modified Lax - Wendroff scheme. The results were obtained using the methods described above are theoretically very consistent with the triggering time ts = 0.47 s and the experimental value 0.46 s. Thus, the studying dynamic circuits of the pneumatic drive of TT brakes showed a high converging theoretical characteristic for a typical control line of a drive with an accelerating valve with experimental data, and the error was no more than 5%.
Highlights
As the mainstay of the world's economy, the vehicle is one of the most important transportations for human beings [1, 3]
Stability is not always maintained by passive braking systems, even if they are in perfect operating condition [6]
Given that tractor trailers' carrying capacity and speed often depend on the condition of their brake systems, the braking speed and synchronous operation of all trailers are
Summary
As the mainstay of the world's economy, the vehicle is one of the most important transportations for human beings [1, 3]. The main important factor for human life and quality delivery of cargo using vehicles is the braking system. The braking system has to be able to stop or reduce the vehicle speed as quickly as possible and maintain the vehicle travelling direction in a stable and controllable manner in any road condition [4, 8]. The stability of heavy vehicles, a articulated vehicle, is a very important and complex issue. Tractor/trailer systems can be inherently unstable in certain conditions, such as high-speed hard braking. In such conditions, stability is not always maintained by passive braking systems, even if they are in perfect operating condition [6]. The disadvantages of the conventional pneumatic brake systems, such as response delay and unreasonable braking force distribution, may cause serious accidents [9, 10]
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