Abstract
AbstractThe influence of the cargo weight loaded on the vehicle and the total gross mass of the vehicle on the braking characteristics is often researched from the road safety reason. However, there is not enough knowledge about the influence of weight and load distribution on the loading area of small trucks or vans on their braking characteristics. This article presents the results of measurements of braking decelerations of the van of N1 category and the braking characteristics of a vehicle loaded with different cargo mass with different cargo locations on the loading area. The impact of the longitudinal cargo position on the loading area on the load of the individual axles and thus on the braking deceleration of the vehicle was investigated. The influence of the height of the center of gravity on the dynamic axle load during braking was also determined. Method of direct vehicle deceleration measurement was used by a decelerometer. There were calculated cargo weight and cargo position influences on the dynamic axle load during braking according to the vehicle deceleration.
Highlights
The ability to brake a vehicle is a very important aspect in terms of road safety [1]
The influence of the cargo weight loaded on the vehicle and the total gross mass of the vehicle on the braking characteristics is often researched from the road safety reason
This article presents the results of measurements of braking decelerations of the van of N1 category and the braking characteristics of a vehicle loaded with different cargo mass with different cargo locations on the loading area
Summary
The ability to brake a vehicle is a very important aspect in terms of road safety [1]. From the perspective of the vehicle operator only vehicle actual mass and load distribution on the loading area can be changed [16, 17]. The vehicle center of gravity is very important during the vehicle braking. The actual position of the gravity center is given by the gravity center of empty vehicle (technical parameter) and by actual mass of load and its position (operation parameter). The actual loaded vehicle center of gravity effects the actual axle loads. There are two types of axle load – static and dynamic axle load. We consider the dynamic axle load by vehicle in motion. The difference between these two axle loads is increasing with the actuating vehicle-in-motion accelerations – lateral (side differences of the wheels) and longitudinal (front/rear axle differences) and vertical (overall differences)
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