Problem of slip definition in driving systems

The pneumatic tire slip phenomena in vehicle driving system have been investigated for 100 years. Many models describe the –road force generation base on it, but literature we can find various definition of slip. In this paper authors present most known model and definitions discuss consequences choice them. which is combination to road friction carrying by deformable running elements are getting losing contact with seems be very simple intuitive process explanation. implementation deformation many not easy implement it into dynamic computer modelling process. So years common function. concept based introduced its carry out balance presented. This has adapted other gears like belt gear or wheels modelling. appears quite universal developable energy efficiency analyses acoustic wave generation.