Research on clutch thermal control during mode transition in hybrid vehicles

In order to tackle the issue of increased clutch surface temperature in hybrid transmission vehicles during heavy load acceleration, a thorough analysis was carried out to examine the impact of acceleration stages on temperature rise. This study investigates the reasons behind excessive heat generation in the clutch during high torque acceleration, as well as the primary factors influencing slip work production. Several calibration strategies are proposed to address overheating problems during high torque acceleration, and optimized calibration along with real-world vehicle testing are also performed for comparison. The results of the tests show that this calibration approach effectively demonstrate a 78.3% improvement in max C0 clutch temperature during transition, ultimately leading to enhanced drivability.