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近年来,各种类型的液力减速制动器(见参考资料1和2)获得了广泛的采用。为了评价减速制动器的基本使用性能,必须了解其制动作用的效率。而这一点是根据汽车在水平路面上用减速制动器制动时的减速值,或道路的坡度值来评价的。在坡路上减速制动器应保证汽车匀速下坡。这些参数可以用汽车运动方程式确定。该方程的简化式可用平衡三个无因次量的方式表示,三个因数是:动力因数、速度因数和总阻力因数(见参考资料3): D-A-Ψ=0 式中:D——汽车动力(牵引或制动)因数;
In recent years, various types of hydraulic retarding brakes (see references 1 and 2) have been widely adopted. In order to evaluate the basic performance of a retarder, it is necessary to know the efficiency of its braking action. And this is based on the car in the horizontal surface with deceleration brake deceleration, or road slope value to evaluate. Deceleration brake on the slope should ensure that the car downhill. These parameters can be determined using the equation of motion of the car. The simplified form of this equation can be expressed in terms of three dimensionless quantities balanced by three factors: the dynamic factor, the speed factor and the total resistance factor (see reference 3): DA-Ψ = 0 where: D - car Power (traction or braking) factor;