Nissan Altima HL32 Hybrid. Manual - part 1072

TM-6

< FUNCTION DIAGNOSIS >

[HYBRID TRANSAXLE: RE0F01H]

MECHANICAL SYSTEM

Power Split Planetary Gear

The power split planetary gear in the compound gear unit transmits the motive force in the four ways

described below.

• The engine motive force, which is input by the carrier, is output to the ring gear. Furthermore, the MG2

motive force is output to the ring gear via the motor speed reduction planetary gear. The sum of these two

motive forces is transmitted in order to drive the wheels.

Item

Connection

Power Split Planetary Gear

Sun Gear

MG1

Ring Gear

Output (Wheels)

Carrier

Engine Output Shaft

Motor Speed Reduction Planetary Gear

Sun Gear

MG2

Ring Gear 

Output (Wheels)

Carrier

Fixed

JPDIA0085GB

MECHANICAL SYSTEM

TM-7

< FUNCTION DIAGNOSIS >

[HYBRID TRANSAXLE: RE0F01H]

C

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F

G

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• The MG2 motive force is output to the ring gear via the motor speed reduction planetary gear, and this

motive force is transmitted in order to drive the wheels.

• The engine motive force, which is input by the carrier, is output to the sun gear. Thus, the motive force is

transmitted in order to operate MG1 as a generator.

JPDIA0086GB

JPDIA0087GB

TM-8

< FUNCTION DIAGNOSIS >

[HYBRID TRANSAXLE: RE0F01H]

MECHANICAL SYSTEM

• The MG1 motive force is input by the sun gear and output to the carrier. Thus, the motive force is transmitted

in order to start the engine.

Motor Speed Reduction Planetary Gear

The carrier of the motor speed reduction planetary gear, which is located in the compound gear unit, is fixed.

The MG2 motive force is input by the sun gear and is output to the ring gear, in order to drive the wheels. For

this reason, the motor speed reduction planetary gear has a function to reduce the speed of MG2 and

increase torque, in accordance with a set gear ratio.

GEAR TRAIN

JPDIA0088GB

JPDIA0089GB

MECHANICAL SYSTEM

TM-9

< FUNCTION DIAGNOSIS >

[HYBRID TRANSAXLE: RE0F01H]

C

E

F

G

H

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J

K

L

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A

B

TM

N

O

P

This transaxle transmits the motive force created by the engine and MG2 to the counter drive gear and the

counter driven gear of the compound gear unit, via the final gear, and to the differential gear unit, in order to

drive the front wheels.

DIFFERENTIAL GEAR UNIT

For the differential gear unit, a 2-pinion type that is similar to the differential unit of the conventional transaxle

is used.

TRANSAXLE DAMPER

A transaxle damper that consists of 4 coil springs with low-twist characteristics is used in order to absorb the

torque fluctuation in the drive force of the engine. Furthermore, a torque fluctuation absorbing mechanism that

JPDIA0090GB