Abstract: During clutch slipping phase of a dry dual clutch transmission, heat accumulation and intensive temperature rise seriously affect the torque transmitting capacity, friction and wear performance and durability of friction plates. Temperature model is the basis of temperature control and the traditional finite element temperature model can not be used for real time control due to tremendous computation efforts. According to the geometric and physical features of main clutch, an assumption of onedimension temperature field is put forward, energy balance equations are established and a timespace discrete model for unsteady heat conduction process under the action of internal heat source is derived, based on which temperature rise coefficient and heat dissipation coefficient are defined and a two parameter simplified model is built. The comparison with test results show that the relative error of simplified model is less than 10%.

Key words: dry dual clutch transmission, temperature model, two parameter simplified model, test