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1) Distribution of Driving Force According to Road Surface
1.
On normal road surface In vehicle with existing part time transfer case, when a driver turns the
steering wheel to park in the 4WD mode, the vehicle may halt sensation of tight corner braking
phenomena. However, in vehicle with TOD system, this phenomena does not occur and the
driving force is properly and automatically distributed.
2.
On paved road with high speed Driving at high speed on roads such as highway mainly uses
rear wheels as driving wheel. At this moment, some of torques is also distributed to front
wheels so that the vehicle could maintain safe ground grab capacity against side winds and
rain. Distribution ratio: 15% for front wheels and 85% for rear wheels.
3.
When turning on the road with low friction rate During cornering on roads such as unpaved,
snowy, icy and muddy, ground grab capacity is increased by distributing required torque and,
at the same time, comfortable steering operation is maintained by controlling the ground grab
capacity at high level.
Distribution ratio: 30 % for front wheels and 70 % for rear wheels.
4.
When climbing or starting off on the road with low friction rate In order to secure the maximum
ground grab capacity and driving force during climbing or starting off on the roads such as
unpaved, snowy and icy road, the system controls the driving force to distribute properly in full
4WD mode. Distribution ratio: 50 % for front wheels and 50 % for rear wheels.
3240-01
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