汽车纵向通过角理论及其作图求法浅析

A Brief Analysis on Ramp Breakover Angle of Vehicle and its Engineering Drawing Solution

本文对汽车纵向通过角进行了理论探讨,提出了通过角等高线概念,并赋予等高线物理意义,给出了纵向通过角的较为快速和准确的工程作图求解方法,使得汽车设计总布置工作更为便捷。同时也对纵向通过角与纵向通过半径定义进行了简单的比较,指出二者的区别与联系,其结果显示纵向通过半径定义工程应用更为便利,而通过角定义则更有利于不同的车之间进行比较,有利于标准的统一性。

Ramp breakover angle of vehicle is discussed in this paper. The concept contour of ramp breakover angle is brought and its physical meaning is given. The engineering drawing method on how to find the angle rapidly and precisely is introduced. This makes layout job more convenient. At the same time, ramp breakover angle is compared to longitudinal passing radius and their difference and relative are told. The result shows that the longitudinal passing radius is more convenient in engineering practice, while the angle is more convenient to be used to judge vehicle passability of different vehicles and this makes the standard not contradictory.