Is the single central differential of Haval H9 sufficient?
1 Answers
Haval H9's single central differential is sufficient. Introduction to the central differential: The Haval H9 utilizes BorgWarner's dual-speed TOD transfer case as its central limited-slip differential, with selectable modes including 2H/AUTO/LOCK/4L. It is referred to as a limited-slip differential because the TOD is an on-demand four-wheel-drive system. Positioned near the transmission output shaft, it integrates multiple sensors to monitor vehicle speed, front and rear axle speeds, throttle opening, ABS status, and other system parameters. During normal driving, the vehicle operates in rear-wheel drive. Only when a speed difference between the front and rear axles is detected—indicating front wheel slippage—does the TOD's internal electromagnetic coil engage the secondary wet clutch, distributing power to the front axle. In cases of severe front wheel slippage, the system increases the electromagnetic coil current, and the torque amplifier tightens the multi-plate clutch, thereby allocating more torque to the front axle. Classification of central differentials: Different differentials employ various locking mechanisms. Common differential locks include the following types: forced locking, high-friction self-locking, jaw coupling, Torsen, and viscous coupling. Among these, the jaw coupling type is frequently used in medium and heavy-duty trucks.
