คำตอบที่ 20
คุณ Khai,
FYI, please see additional info from http://www.planetisuzu.com/articles.htm/109
Torque-on-Demand (TOD) four-wheel-drive system, first introduced in 1998 on the Isuzu Trooper. Like some other systems -- the one used in the Ford Explorer, for example -- Isuzu's TOD is an automatic system that transfers up to 50 percent of the engine's torque to the front wheels when wheelspin is detected at the rear. Unlike the all-wheel-drive systems common to crossovers such as the Allroad and the RX300, Isuzu's TOD includes a two-speed transfer case, with a low range for creepy-crawly work
For 1998, Isuzu gives sport-ute buyers looking for more ute than sport even more reason to consider the Trooper. A new Torque-On-Demand (TOD) four-wheel drive system is available on Troopers equipped with the Performance or Luxury packages. TOD features a 4WD Auto mode that uses speed sensors to detect wheel slippage. By monitoring the speed at which each wheel is spinning, TOD constantly applies optimum driving force to all four wheels, regardless of road surface conditions. If the rear wheels slip, torque is transferred to the front wheels, and vice versa. Data gathered from the TOD sensors is used to try and predict whether the truck is going to accelerate, decelerate or stay at a constant speed. If it is determined that heavy acceleration is imminent, TOD tries to redistribute torque to the wheels that will need it to improve stability. TOD can be engaged from 2Hi at speeds under 60 mph, or the Trooper can operate constantly in TOD 4Hi mode at any speed on any road surface. A TOD 4Lo mode is also available, for particularly difficult off-road situations.
