Mitsubishi Evolution X. Manual — part 76

GENERAL INFORMATION

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POWER STEERING

37-2

GENERAL INFORMATION

M2370000101478

The hydraulic power steering system has been
adopted.
The steering system offers the following features.

• The support method of the steering gear to the

crossmember is realized by the left and right
bushings with inner cylinders for improved steer-
ing feeling.

• The AWC switch has been installed on the steer-

ing wheel top surface for improved convenience.

• For some models, the steering wheel audio

remote control switch and steering wheel voice
control switch have been established for
improved convenience.

• The variable flow pump, which reduces the

engine loss by controlling the flow amount neces-
sary for driving straight ahead or cornering, has
been adopted.

• The flexible tube length in the high pressure hose

has been optimized for reducing the pump noise.

• The reservoir tank already adopted for Outlander

has been adopted, and the baffle plate inside the
cap has been improved to prevent oil leakage
under the high load condition.

SPECIFICATIONS

Item

Specifications

Steering wheel

Shape

Three-spoke type

Outer diameter mm (in)

365 (14.3)

Maximum number of rotation

2.27

Power steering type

Integral type (Engine speed-dependent
type)

Oil pump

Shape

Vane type with fluid flow amount control
system

Basic discharge rate cm

3

/rev.

(cu in/rev)

9.0 (0.55)

Relief pressure MPa (psi)

8.55 (1.197)

Reservoir type

Separation type (Resin made)

Steering gear and linkage

Shape

Rack and pinion type

Stroke ratio (rack
stroke/number of steering
wheel rotation) mm/rev
(in/rev)

65.97 (2.59)

Rack stroke mm (in)

150 (5.9)

Steering angle

Inside wheel

33

°

Outside wheel

28

°

STEERING WHEEL

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POWER STEERING

37-3

CONSTRUCTION DIAGRAM

STEERING WHEEL

M2370001001087

The steering wheel is designed to improve operabil-
ity and safety, and has the following features.

• The genuine leather 3-spoke type has been

adopted.

• The AWC switch has been installed on the steer-

ing wheel top surface.

• For some models, the steering wheel audio

remote control switch and steering wheel voice
control switch have been established for
improved convenience.

• In addition to the round module pad which gives a

sporty image, the integrated garnish has been
employed for better appearance.

• The small-diameter steering wheel suitable for

the sport drive has been adopted.

• The dual inflator has been adopted, which

detects the impact exceeding a certain level upon
collision, and controls the airbag deployment
depending on the impact severity.

AC710604 AB

Steering wheel

Steering column
shaft assembly

Pressure hose
assembly

Oil reservoir

Suction hose

Oil pump assembly

Steering gear

Return hose

Front axle crossmember

Heat protector

Pressure switch

Cooler tube assembly

AC708297

A

A

A

A

Steering wheel audio
remote control switch

AB

Section A - A

Inflator

Cruise control switch

Steering wheel voice control switch

Driver's air bag

Driver's air bag module

Driver's air bag module

Cruise control switch

AWC switch

<Equipped with AWC switch>

<Equipped with steering wheel
remote control switch>

STEERING SHAFT AND COLUMN

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POWER STEERING

37-4

STEERING SHAFT AND COLUMN

M2370002000924

The steering column shaft is designed to improve
operability and safety, and has the following features.

• The steering column layout has been optimized

for better steering feeling (reduction of torque
fluctuation) covering the whole tilting range.

• The collapsible steering column, with which the

steering wheel moves forward on a collision, has
been employed for improvement of passenger
safety.

AC708298

A

A

B

B

AB

Column bracket

Column pipe

Tilt point

Tilt lever

Section B-B

One-way
capsule

Section A-A

Pin

Intermediate shaft (A)

Intermediate shaft (B)

STEERING SHAFT AND COLUMN

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POWER STEERING

37-5

ENERGY ABSORBING MECHANISM

.

PRIMARY COLLISION

When a vehicle is crashed and the load is applied to the lower
shaft from the gearbox side, the intermediate shaft (A) is forced
into the intermediate shaft (B) to absorb the impact load.

.

AC504819 AC

Before collision

After collision

Intermediate shaft (A)

Intermediate shaft (B)