1997 New Car Features.pdf

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SUPRA —NEW FEATURES
37
BODY
1. Impact Absorbing Structure
Reinforcement to the bottom of the front pillar, reinforcements and gussets to the bottom of the center pillar, and
gussets connecting the lower part of the center pillar and the center floor cross members, have been newly adopted
to realize and even excellent body rigidity.
An energy absorbing pads are provided at the upper shoulder and lower arm areas of the door trim to ensure a high
level of energy absorbent for side collisions.
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SUPRA —NEW FEATURES
2. Sound Absorbing Materials
Seal material has been newly provided to the bottom of the front pillar, and a quarter service hole cover has been
newly provided to the quarter portion in order to reduce road noise while driving.
The material of sound absorbing material used in the roof side inner garnish, quarter trim, deck side trim and deck
rear trim has been changed to reduce road noise.
CRUISE CONTROL SYSTEM
1. Actuator
The ’97 Supra has adopted a new motor type actuator that is both lightweight and simple in construction.
The basic construction and operation of this actuator are the same as in the ’96 4Runner with 5VZ–FE engine.
For details, see the 1996 4Runner New Car Features (Pub. No. NCF126U), page 71.
2. Cruise Control ECU
Manual Cancel Function
The manual cancel function, which cancels the cruise control when the parking brake is operated, has been
discontinued.
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SUPRA —NEW FEATURES
3. Sound Absorbing Materials
Seal material has been newly provided to the bottom of the front pillar, and a quarter service hole cover has been
newly provided to the quarter portion in order to reduce road noise while driving.
The material of sound absorbing material used in the roof side inner garnish, quarter trim, deck side trim and deck
rear trim has been changed to reduce road noise.
CRUISE CONTROL SYSTEM
1. Actuator
The ’97 Supra has adopted a new motor type actuator that is both lightweight and simple in construction.
The basic construction and operation of this actuator are the same as in the ’96 4Runner with 5VZ–FE engine.
For details, see the 1996 4Runner New Car Features (Pub. No. NCF126U), page 71.
2. Cruise Control ECU
Manual Cancel Function
The manual cancel function, which cancels the cruise control when the parking brake is operated, has been
discontinued.
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SUPRA —NEW FEATURES
DIFFERENTIAL
1. General
A differential gear ratio has been changed on the 2JZ–GE engine model.
A Helical gear type torque–sensing LSD (Limited Slip Differential) is available as an option on the SJZ–GE engine
model and 2JZ–GTE engine with automatic transmission model.
As in the ’96 model, a worm gear type torque–sensing LSD is used on the model with the SJZ–GTE engine and
manual transmission.
Specifications
Model
’97 Model
’96 Model
Engine Type
2JZ–GE
2JZ–GTE
2JZ–GE
2JZ–GTE
Transmission Type
Manual Automatic Manual Automatic Manual Automatic Manual Automatic
Item
Differential Gear Ratio
4.803
u
3.133
3.769
4.272
u
3.133
3.769
No. of
Teeth
Drive Pinion
12
u
15
13
11
u
15
13
Ring Gear
49
u
47
49
47
u
47
49
Ring Gear Size
mm (in.)
205
(8.07)
u
222
(8.74)
205
(8.07)
u
u
222
(8.74)
205
(8.07)
No. of Differential
Pinion
2,8* 1, 3
u
6* 2
2,8* 1, 3
2,6* 2, 3
u
6* 2
u
* 1 : Models with Helical Gear Type Torque–Sensing LSD
* 2 : Models with Worm Gear Type Torque–Sensing LSD
* 3 : Option
2. Helical Gear Type Torque–Sensing LSD
Characteristics
Good traction of high bias ratio design is obtained through the utilization of two types of friction: One is the friction
that is generated between the planet gear’s tooth tips and the differential case’s inner wall. The other is the friction
that is generated between the side gear end face and the thrust washer.
Quick response and minimum time lag until differential limiting force is generated.
The bias ratio sustains minimal changes due to aging and maintains a stable performance.
A simple, compact, and lightweight differential configuration has been achieved through the use of the helical gear.
Ordinary differential oil must be used; do not use special LSD oil.
Manual Automatic Manual Automatic Manual Automatic Manual Automatic
No. of
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SUPRA —NEW FEATURES
27
Construction
The helical gear type torque–sensing LSD consists of a differential case, 9 planet gears, 2 side gears and 4 thrust
washers.
Planet gears mesh with one another as a pair, and each gear of the pair meshes with the side gear on its right or left
side.
The planet gears are supported by the hole that is provided in the differential case. They are constructed so that they
revolve while rotating over the side gear.
Operation
1) Straight–Ahead Operation
Since side gears (left and right) and planet gears are rotating together with the differential case as a unit when the
vehicle is running straight–forward, the driving force is transmitted from the ring gear to the differential case, planet
gears and side gears.
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