Nissan X-Trail 32. Manual — part 2131
TM-482
< SYSTEM DESCRIPTION >
[CVT: RE0F10G]
STRUCTURE AND OPERATION
STRUCTURE AND OPERATION
TRANSAXLE
TRANSAXLE : Cross-Sectional View
INFOID:0000000010622725
Converter housing
Oil pump
Planetary gear
Control valve
Oil pan
Chain 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
JSDIA3719ZZ
STRUCTURE AND OPERATION
TM-483
< SYSTEM DESCRIPTION >
[CVT: RE0F10G]
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TRANSAXLE : Operation Status
INFOID:0000000010622726
×
: Engaged or applied.
TRANSAXLE : Transaxle Mechanism
INFOID:0000000010622727
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 chain belt
.The groove width changes according to wrapping radius of chain 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.
Chain belt
Selector lever
position
Parking mech-
anism
Forward
clutch
Reverse brake
Primary pulley
Secondary
pulley
Chain belt
Final drive
P
×
R
×
×
×
×
×
N
D
×
×
×
×
×
Ds, M
×
×
×
×
×
JSDIA2426GB
TM-484
< SYSTEM DESCRIPTION >
[CVT: RE0F10G]
STRUCTURE AND OPERATION
The chain belt consists of approximately 150 locker pins
and
1,000 link plates
. Chains are rotated by locker pins sandwiched by
pulleys. This produces tension difference in chains among pulleys.
Accordingly, the power is transferred by the tension.
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.
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
JSDIA3643ZZ
JSDIA5185GB
STRUCTURE AND OPERATION
TM-485
< SYSTEM DESCRIPTION >
[CVT: RE0F10G]
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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.
The lubrication oil is the same as the CVT fluid which lubricates the entire transaxle.
TRANSAXLE : Oil Pressure System
INFOID:0000000010622728
Oil pressure required for operation of the transaxle transmission mechanism is generated by oil pump, oil
pressure control valve, solenoid valve, etc. During idling stop, the electric oil pump is activated to generate oil
pressure required for restarting the engine.
JSDIA2427GB
JSDIA5339GB
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