Is the single central differential of Haval H9 sufficient?
3 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.
I recently switched from a Haval H9 after driving it for a while, and the central differential is indeed quite practical—it’s fully sufficient for normal road conditions and light off-roading. It distributes power between the front and rear axles via the on-demand four-wheel-drive system, responding flexibly to daily city traffic jams or rainy slippery roads with minimal wheel slip. However, if you’re tackling deserts or deep mud pits, relying solely on this might not provide enough grip. In extreme cases, pairing it with a rear differential lock would be more reassuring. For regular highway or mountainous driving, the central differential alone is stable enough, and fuel consumption remains reasonable, since most people don’t go off-roading daily. I’d recommend checking your tire condition, as it affects performance. Overall, it handles 90% of scenarios well, but if you frequently challenge harsh terrains, upgrading with additional hardware is advisable.
I usually drive a Haval H9 for commuting and weekend outings, and the single central differential is more than enough for most tasks. This system automatically adjusts power, making city driving smooth and worry-free. It also handles dirt roads or light snow decently with acceptable grip. However, it struggles on steep slopes or deep pits since it's not a hardcore locker, which can be a limitation. A friend with a similar vehicle once needed to engage the rear differential to escape a tricky situation. For regular family users and mild adventurers, this setup is both sufficient and cost-effective, so no need to overthink it. Regular maintenance is key—keep the wiring dust-free and fluids in check to avoid ruining the driving experience.
