Mitsubishi Eclipse. Technical Information Manual (1994) — part 59
Rear Suspension
Bump
Toe-out
Rebound
Toe-in
Toe control arm
VARIATION IN TOE ANGLE ON TURNS
When the vehicle rolls as it makes a turn, the toe geometry
changes as shown by the characteristics curve at the left under
the effect of the toe control arm action. Also, under the side
forces that are generated during a turn, the toe angle of the
outer wheel changes in such a way that the toe-in state will
be maintained thanks to the balance in rigidity of the individual
arms’ bushings properly selected for that effect. These charac-
teristics allow the rear wheels to make directional changes
in phase with the front wheels (steered wheels) during a turn,
assuring better steering stability.
VARIATION IN TOE ANGLE BY SIDE FORCES
Since the side force acting on the tire causes the bushings
at both ends of the trailing arm to twist in an oblique direction,
point A in the illustration is caused to shift toward the center
of the vehicle. The force also acts on the bushings at both
ends of the lower arm in their diametric direction, and point
B is consequently displaced toward the center of the vehicle
by the amount equivalent to the total deflection of the two
bushings (at both ends of the lower arm). The force exerted
to the bushing of the toe control arm also acts in the diametric
direction as in the case of the lower arm bushings, but point
C is displaced toward the center of the vehicle only by the
amount equivalent to the one bushing’s deflection since point
C is a ball joint.
The amount of the displacement of these points are compared
below.
(Large
Point A Point B Point C (Small
displace-
ment)
ment)
Such being the displacement relationship of the three points,
a toe-in state is maintained even in side force conditions.
VARIATION IN TOE ANGLE BY REARWARD FORCE INPUT
Generally, when the vehicle goes over a projection on road
or when braking, rearward forces will act on the tires and a
toe-out condition will occur because of the resulting compliance
steer. The multi-link suspension, however, maintains a toe-in
state as shown at the left thanks to its proper arrangement
of the individual control arms even when the vehicle goes
over a bump or it is braked and its wheels are subject to
rearward forces.
Premium price
Items
Medium price
High price
AWD
FWD
Wheel
Tire size
89V
89H
Wheel type
Steel type
Steel type
Aluminum type
Aluminum
Aluminum
Aluminum
Wheel size
14 x
Amount of wheel offset
mm (in.)
46 (1.8)
46 (1.8)
46 (1.8)
46 (1.8)
Tire inflation pressure
(psi.)
Front
220 (32)
220 (32)
220 (32)
220 (32)
Rear
200 (29)
200 (29)
200 (29)
200 (29)
Spear wheel
Tire size
Wheel size
Amount of wheel offset
mm (in.)
46 (1.8)
46 (1.8)
Tire inflation pressure
(psi.)
420 (60)
420 (60)
NOTE
(1)
(2)
Option
Option in combination with ABS
Power Steering
All models come standard with an engine speed
sensitive power steering system.
FEATURES
Engine speed sensitive power steering
Impact absorption mechanism
2. Supplemental Restraint System
Double-lip oil seals used in power cylinder
l
The
type steering wheel with SRS unit
l
is adopted on all models.
The steering system uses a vane oil
[For information on the SRS, refer to the “Interior
fluid flow control system.
l
Supplemental Restraint System
The steering gear and linkage system is highly
tion.]
reliable integral rack and pinion type which
tures light weight and compact size.
l
The steering column incorporates both a shock
absorbing mechanism and a tilt steering mecha-
nism.
SPECIFICATIONS
Items
Non-turbo
Turbo
Steering wheel maximum turns
2.41
Steering angle (vehicle in unladen)
Inner wheel
2”
Outer wheel
Steering gear and linkage
Integral type
Gear type
Rack and pinion
Gear ratio
(infinity)
Rack stroke
mm (in.)
124 (4.9)
Oil pump type
Vane type with fluid flow
Vane type with fluid flow
control system
Displacement
control system
10.5
9.6
Relief set pressure
(psi.)
8.8 (1,277)
8.8 (1,277)
Steering wheel
pipe
Steering column assembly
<Non-Turbo>
Al
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