关键词: 滑行阻力；整车内阻分解；卡钳拖滞力

Abstract: This paper decomposes the vehicle sliding resistance through the combination of road sliding test, drum test and bench test, separates the internal resistance of the transmission system from the sliding resistance, and further decomposes the internal resistance of subsystems such as caliper drag force, gearbox+transmission shaft resistance torque, drive axle+bearing resistance torque, which provides verification method and data support for internal resistance optimization. The results show that, the internal resistance accounts for about 20%～30% of the sliding resistance. The more complex the transmission system structure or the longer the transmission chain, the greater the proportion of internal resistance; The internal resistance of transmission system increases with the increase of vehicle speed; The internal resistance dispersion of individual parts is large. How to control the consistency of parts is also the key to improve the internal resistance.

Key words: Sliding resistance; Resistance decomposition; Caliper drag force