Nissan X-Trail 32. Manual - part 2072

 

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Nissan X-Trail 32. Manual - part 2072

 

 

TM-246

< SYSTEM DESCRIPTION >

[CVT: RE0F10D]

STRUCTURE AND OPERATION

STRUCTURE AND OPERATION

TRANSAXLE

TRANSAXLE : Cross-Sectional View

INFOID:0000000010622444

Converter housing 

Oil pump

Planetary gear

Control valve

Oil pan

Steel belt 

Primary pulley

Secondary pulley

Side cover

Transaxle case

Differential case

Final gear

Reduction gear

Idler gear

Output gear

Drive sprocket 

Torque converter

Driven sprocket

Oil pump chain 

2WD

4WD

JSDIA5169ZZ

STRUCTURE AND OPERATION

TM-247

< SYSTEM DESCRIPTION >

[CVT: RE0F10D]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

TRANSAXLE : Operation Status

INFOID:0000000010622445

×

: Engaged or applied.

TRANSAXLE : Transaxle Mechanism

INFOID:0000000010622446

TORQUE CONVERTER (WITH LOCK-UP FUNCTION)

The torque converter is a system that increases the engine torque and transmits the torque to the transaxle. A
symmetrical 3-element, 1-stage, 2-phase type is used here.

OIL PUMP

Utilizes a vane-type oil pump that is driven by the engine through the oil pump drive chain in order to increase
efficiency of pump discharge volume in low-speed zone and optimize pump discharge volume in high-speed
zone. Discharged oil from oil pump is transmitted to control valve. It is used as the oil of primary and second-
ary pulley operation, the oil of clutch operation, and the lubricant for each part.

PLANETARY GEAR

• A planetary gear type of forward/reverse selector mechanism is installed between the torque converter and

primary pulley.

• The power from the torque converter is input via the input shaft, operating a wet multi-plate clutch by means

of hydraulic pressure to switch between forward and reverse driving.

Operation of Planetary gear

BELT & PULLEY

It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel belt
(the steel plates are placed continuously and the belt is guided with the multilayer steel rings on both sides).

Selector lever 

position

Parking mech-

anism

Forward 

clutch

Reverse brake 

Primary pulley 

Secondary 

pulley

Steel belt

Final drive

P

×

R

×

×

×

×

×

N

D, M

×

×

×

×

×

JSDIA2426GB

TM-248

< SYSTEM DESCRIPTION >

[CVT: RE0F10D]

STRUCTURE AND OPERATION

The groove width changes according to wrapping radius of steel belt and pulley from low status to overdrive
status continuously with non-step. It is controlled with the oil pressures of primary pulley and secondary pulley.

Steel Belt

It is composed of multiple steel plates 

 and two steel rings 

stacked to a several number. The feature of this steel belt transmits
power with compression of the steel plate in contrast with transmis-
sion of power in pulling with a rubber belt. Friction force is required
with the pulley slope to transmit power from the steel plate. The force
is generated with the following mechanism:
Oil pressure applies to the secondary pulley to nip the plate. 

The

plate is pushed and extended outward. 

The steel ring shows with-

stands. 

Pulling force is generated on the steel ring. 

The plate of

the primary pulley is nipped between the pulley. 

Friction force is

generated between the steel belt and the pulley. 
Therefore, responsibilities are divided by the steel plate that trans-
mits the power with compression and the steel ring that maintains necessary friction force.   In this way, the
tension of the steel ring is distributed on the entire surface and stress variation is limited, resulting in good
durability. 

Pulley

The primary pulley (input shaft side) and the secondary pulley (output shaft side) have the shaft with slope
(fixed cone surface), movable sheave (movable cone surface that can move in the axial direction) and oil pres-
sure chamber at the back of the movable sheave. 

JSDIA2428GB

JSDIA2431ZZ

STRUCTURE AND OPERATION

TM-249

< SYSTEM DESCRIPTION >

[CVT: RE0F10D]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

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P

The movable sheave slides on the shaft to change the groove width of the pulley. Input signals of engine load
(accelerator pedal opening), primary pulley speed and secondary pulley speed change the operation pres-
sures of the primary pulley and the secondary pulley, and controls the pulley groove width. 

FINAL DRIVE AND DIFFERENTIAL

The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and sec-
ondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.

JSDIA2429GB

 

 

 

 

 

 

 

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