Other on-demand all-wheel-drive systems (FWD-weighted)
Seen on: Honda Real-Time 4WD, Hyundai TorqTransfer, Ford/Lincoln Intelligent AWD, Lexus Active Torque Control AWD, Volvo AWD system
How they work: The overwhelming majority of passenger car AWD/4WD systems are on-demand in nature. In their resting and cruising states, these systems operate in a standard front-wheel-drive configuration, sending 100 percent of power to the front wheels for more-predictable handling and increased fuel economy. As necessary, these systems can send power to the rear axle to counteract slip or to boost handling. Although the amount of power that gets sent to the back axle varies between manufacturers and models, they rarely approach and almost never exceed a 50/50 split.
Volvo's AWD system is technically a real-time system (which we'll discuss in a bit), but since it only send 5 percent of its power to the rear axle in its default state, we're categorizing it as a front-weighted system.
Advantages: Improved fuel economy during normal driving conditions, sending more power to the front makes them potentially more stable than rear-weighted vehicles
May 23, 2011 7:45 PM PDT
Photo by: Honda
| Caption by: Antuan Goodwin
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