Simulation Research on Dynamic Control Strategy of Multi-Mode Clutch Transmission with Dog Teeth

The hybrid transmission studied in this paper is a compound form of dog clutch and multi-mode clutch, in which the dog clutch controls Gear1 and the multi-mode clutch controls Gear2 and Gear3. The input shaft is rigidly connected to the drive gear of the dog clutch and the drive gear of Gear2&Gear3. The driven gear of the dog clutch is rigidly connected to the drive gear of Gear1, and the two gears are attached to the input shaft in a free-rotating manner. The driven gear of Gear1 is fixed to the output shaft. The driven gears of Gear2&Gear3 are connected to the inner rings of the two multi-mode clutches. The outer rings of the two multi-mode clutches are simultaneously connected to the transmission output shaft. By actively controlling the CAM of the unidirectional clutch, the unidirectional clutch can rotate freely in both directions, thus realizing multiple modes. The shift hub can control the engagement state of the dog tooth clutch and the CAM state of the multi-mode clutch. Gear1 engages when the dog clutch engages. Gear2 engages when the CAM of the multi-mode clutch in gear 2 is raised. Gear3 engages when the CAM of the multimode clutch in gear 3 is raised. According to the structure of the multi-mode clutch transmission, the transmission principle of the multi-mode clutch transmission is analyzed, and a set of coordinated control strategy of the multi-mode clutch transmission is proposed. Through vehicle speed, it is concluded that the proposed coordination strategy can realize the simulation under different working conditions; The speed when the dog clutch is used under full throttle condition is higher than the speed when the dog clutch is not used. The speed when the dog clutch is used in the half-throttle condition is equal to the speed when the dog clutch is not used; In full throttle conditions need to use the dog clutch, in half throttle conditions do not need to use the dog clutch.