Powertrain and Suspension Layout of Nissan GTR

1. POWERTRAIN AND SUSPENSION LAYOUT NISSAN GT-R (2015)

2. POWERTRAIN - SPECIFICATIONS
POWERTRAIN
Drivetrain All Wheel Drive
Transmission Type 6 – Speed
Transmission Control Auto – Shift Manual with Overdrive
First Gear Ratio 4.06:1
Second Gear Ratio 2.30:1
Third Gear Ratio 1.60:1
Fourth Gear Ratio 1.25:1
Fifth Gear Ratio 1.00:1
Sixth Gear Ratio 0.80:1
Final Drive Axle Ratio 3.70:1
In figure: 2015 Nissan GT-R Nismo Chassis
Front end - Engine |Rear end - Transmission, Differential and Transfer case

3. ALL WHEEL DRIVE MODE
ENGINE TO TRANSFER CASE
TRANSFER CASE TO TRANSAXLE
TRANSAXLE TO REAR DIFFERENTIAL
TRANSAXLE TO TRANSFER CASE
TRANSFER CASE TO FRONT DIFFERENTIAL
ENGINE TO TRANSFER CASE
TRANSFER CASE TO TRANSAXLE
TRANSAXLE TO REAR DIFFERENTIAL
NORMAL DRIVING MODE - RWD
FRONT DIFFERENTIAL
• The Front Differential is an
open differential.
• Open Differential transfers
torque to the wheel which
has least resistance
REAR DIFFERENTIAL
• The Rear Differential is a
limited slip differential.
• Unlike open differential, it
transfers torque to the wheel
which has more traction
200
milliseconds
Time taken to shift gear

4. ATTESA E-TS
Advanced Total Traction Engineering System for All-terrain with Electronic Torque Split
• GT-R ATTESA E-TS uses two almost parallel driveshafts, with a
second driveshaft running slightly to the right of the main
driveshaft and engine sending power exclusively to the front
wheels through an open differential.
• The main driveshaft, goes from the engine to the rear-based
gearbox, from where it sends power through a limited slip
differential to the rear wheels, therefore varying the left/right
torque split at the rear axle.
• Integrated into the double-clutch gearbox there's a transfer
case in which, instead of a center differential lies a center wet
multi-plate clutch system.

5. POWERTRAIN - FEATURES
In figure: GR6 Dual Clutch Transmission
Manufactured by Borg – Warner Inc. Transmission. Includes dual-clutch module, clutch-control, shift-actuation systems,
and synchronizer assemblies

6. 1. Drive Torque
2. First Gear Engaged
3. Second Gear Engaged
GR6 TRANSMISSION - WORKING
1. A dual-clutch automated manual transmission has two
wet computer-controlled clutches (wet clutch means
the friction plates are immersed in transmission fluid).
2. One clutch controls odd gears (1,3,5); the other clutch
controls even gears (2,4,6).
3. When the car starts in the first gear, the second gear is
already pre-shifted and as soon as the car reaches the
speed suitable for the second gear, the odd-gear clutch
disengages the first gear and almost simultaneously
the even-gear clutch engages the second gear.
4. Similarly, with the next 2-3 gear shift and so on.
5. All this is done to minimize time and torque loss
between gear shifting.
In Figure: Manual
Transmission Torque Output
In Figure: Dual Clutch Torque
Output

7. TRANSFER CASE
In figure: Borg Warner Torque on Demand Transfer Case
Instead of a central differential lies a wet multi-plate clutch system.
• TOD control unit automatically tailors
torque distribution to road, offering full
time four wheel drive. TOD distributes
electronically-controlled power into front
and rear wheels whose ratio change from
0:100 to 50:50 complying with wheel
speed differences.
4H MODE
4H is the normal operating mode when
drive of which gear ratio is 1:1
4L MODE
4L mode distributes power to front and
rear wheels 50 : 50 of which gear ratio is
2.48:1.

8. SUSPENSION LAYOUT

9. BILSTEIN B4 DAMPTRONIC SUSPENSION SYSTEM
• Sensors detect acceleration and braking, lane changes and
road surface conditions and adjust the shock absorbers
accordingly in mere milliseconds.
In figure: Bilstein B4 Damptronic Suspension System
Active Suspension System to provide better road contact at higher acceleration as
well for comfortable ride during touring
COMFORT
NORMAL
SPORT

10. REAR SUSPENSION – MULTI LINK SUSPENSION
• A Multi-link suspension is a type of vehicle suspension
design which uses three or more lateral arms and one
or more longitudinal arms.
• In order to simplify understanding, it is usual to
consider the function of the arms in each of three
orthogonal planes.
Advantages
• It is possible to alter one
parameter in the suspension at
a time, without affecting
anything else.
• This is in direct contrast to the
double wishbone suspension,
where moving a hard point
will affect two or more
parameters
Disadvantages
• Multi – link suspension is
costly and complex.
• Suspension tuning requires 3D
CAE Analysis Software

11. FRONT SUSPENSION – DOUBLE WISHBONE TYPE
• Each wishbone, which has two mounting positions to the frame and
one at the wheel, bears a shock absorber and a coil spring to absorb
vibrations.
• Double-wishbone suspensions allow for more control over the camber
angle of the wheel, which describes the degree to which the wheels tilt
in and out.
• They also help minimize roll or sway and provide for a more
consistent steering feel.
• Allows the spindles to travel vertically up and down. When they do
this, they also have a slight side-to-side motion caused by the arc that
the wishbones describe around their pivot points. This side-to-side
motion is known as scrub.

12. SEATING
• The 2015 Nissan GT-R seats four and comes
standard with eight way power adjustable
passenger seat and heated front seats.
• The front seats offer a high seating position,
excellent long distance comfort and are easier to
get into and get out of than in most competing
sports cars.
• The cabin is small but the adjustable front seat
and steering wheel makes it comfortable for tall
occupants.
• The rear seats cannot give a comfortable ride to
the occupants as it is cramped.
• The space available for cargo is 8.8 cubic feet

13. MEASUREMENTS
INTERIOR MEASUREMENTS (in inches)
Front Head Room 38.1
Front Hip Room 54.7
Front Leg Room 44.6
Front Shoulder Room 54.3
Rear Hip Room 44.9
Rear Head Room 33.5
Rear Leg Room 26.4
Rear Shoulder Room 50.0
EXTERIOR MEASUREMENTS (in inches)
Total Length 183.8
Total Width 74.6
Total Height 53.9
Front Track 62.6
Rear Track 63
Wheelbase 109.4
• The Nissan GT-R uses premium front midship configuration for positioning the engine inside the vehicle.
• The term midship means that the engine’s centre of mass is displaced from the front axle centre line into the cabin.
• This reduces the sprung mass on the front suspension as well as offers better load distribution