brendan
12-02-2003, 12:31 PM
Did you know that regardless of road conditions (where "towards" means the torque ratios move in that direction from the current ratios, which might be large or small):
The AWD equipped vehicle either stays in or moves towards 2WD when:
-You are driving forward at constant speed.
-You are driving foward while decelerating (so that ABS, if equipped, will work correctly).
-You are driving backwards at constant speed.
-The temperature of the rear differential fluid reaches a trigger temperature.
-The pressure of the fluid gets too high (this reduces excessive rear wheel torque).
The AWD equipped vehicle either stays in or moves towards 4WD when:
-You are accelerating forward, including starting to drive forward from a stop.
-You are accelerating backwards, including starting to drive backwards from a stop.
-You are driving backwards and declerating.
I wondered about the different handling of deceleration, but the ABS note made it clear.
So, if you ever wondered if you got better traction on non-slippery, dusty, wet, snowy, gravelly road surfaces with the AWD, or why the 2WD seems more prone to spin wheels from a start, well, now you know.
Neat stuff.
-brendan
The AWD equipped vehicle either stays in or moves towards 2WD when:
-You are driving forward at constant speed.
-You are driving foward while decelerating (so that ABS, if equipped, will work correctly).
-You are driving backwards at constant speed.
-The temperature of the rear differential fluid reaches a trigger temperature.
-The pressure of the fluid gets too high (this reduces excessive rear wheel torque).
The AWD equipped vehicle either stays in or moves towards 4WD when:
-You are accelerating forward, including starting to drive forward from a stop.
-You are accelerating backwards, including starting to drive backwards from a stop.
-You are driving backwards and declerating.
I wondered about the different handling of deceleration, but the ABS note made it clear.
So, if you ever wondered if you got better traction on non-slippery, dusty, wet, snowy, gravelly road surfaces with the AWD, or why the 2WD seems more prone to spin wheels from a start, well, now you know.
Neat stuff.
-brendan