Nissan all wheel drive explained

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Nissan

Pathfinder I - Part-time all wheel drive.

Pathfinder (model years?) - All Mode selectable all wheel drive system - normally rear wheel drive, in AUTO mode front axle engages when rear wheels start to slip, power is variably distributed from 0:100 to 50:50 front to rear. In AUTO mode the system works as an automatic all wheel drive system. In 2WD mode, the clutch is unlocked permanently. In 4H mode the tranfer clutch is permanently locked - power distribution 50:50.

Figure: All Mode all wheel drive system modes and scheme.

Patrol 160, GR Y60 ...-1998, Y61 1998-..., PickUp 1998-... - Part-time all wheel drive. LSD rear - standard, Locking differential - optional. 2,02:1 low gear.

Figure: Nissan Patrol GR transfer case

X-Trail - All Mode selectable all wheel drive system - normally front wheel drive vehicle, in AUTO mode rear axle engages when front wheels start to slip, power is variably distributed from 100:0 to 50:50 front to rear. In AUTO mode the system works as an automatic all wheel drive system.

In 2WD mode, the clutch is unlocked permanently. However, even when in 2WD mode, front wheels can sometimes be engaged by electronic control unit, for example under heavy acceleration.

In LOCK mode the tranfer clutch is permanently locked - power distribution 50:50. If vehicle speed increases, the vehicle automatically goes to AUTO mode, then, when speed decreases, it switches back to LOCK. When transfer clutch oil is overheated, the vehicle goes into 2WD mode.

Figure: Nissan X-Trail All Mode 4wd system description

Last updated: 2010-07-28 15:21

There are 2 comments

Sean

March 15, 2010 - 02:20

Subject: Missing system...

Skyline???

Reply to Sean

George

August 16, 2010 - 23:58

Subject: Re: Missing system...

The Skyline is conceptually the same.
Mechanical rear wheel drive, with a clutch to transfer power to the front differential.