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TPMS ECU
The TPMS ECU is located to the rear bumper rail
under the vehicle. It outputs the tire pressure and
cluster, based on the wheel module information
and CAN data.
G-sensor(4WD, ABS)
For the vehicle with the ABS, a speed difference
between the wheels is not noticeable as all the wheels
are slipping during abrupt braking. Therefore, the
vehicle needs the speed information from other sensors
other than the wheel speed sensor. The longitudinal
acceleration sensor (G-sensor) is used for this case. It
controls the ABS by using the signals from the sensor
during abrupt braking and acceleration.
TCU unit
The transmission control unit (TCU) is installed
under the driver seat, and controls the
transmission. The TCU is operated by the ignition
power supply and receives and processes the
following information from the inner sensors
through CAN buses.
TGS Lever assembly
The TGS communicates with TCU
(Transmission Control Unit), ECU,
ESP HECU and instrument cluster
to let the driver select the desired
transmission gear and to maintain
the desired driving condition. Also,
the tip switch is installed on the
lever knob and the steering wheel
so that the driver select the gear
manually when the shift lever is in
"M".Sensor cluster
The sensor cluster is linked to
the sensors on the unit board
and CAN interface. And they
are housed in one case and
mounted to the body.
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A/T assembly
Automatic transmission is available as 4WD- and 2WD-type,
and provides 6 speeds for forward travel and 1 reverse
travel. It is also equipped with the torque converter with inner
lock-up clutch and electronically controlled solenoid which
controls all hydraulic functions.
3. CHASSIS COMPONENT LAYOUT
PTU (Power Transfer Unit)
The PTU is a device that transfers the power
generated from the engine to the rear axle through
propeller shaft and E-coupling by changing the power
4WD vehicle.Rear axle assembly
The rear axle installed in this car is a removable
axle, called IRDA (Independent Rear Differential
Axle). The rear differential carrier is installed
directly on the sub frame, and there is an
independent suspension that allows each wheel
on the same axle to move vertically independentl
y
of each other with the universal joint and the slip
joint.
E-coupling control unit (E-Coupling ECU)
The E-coupling unit is a control unit which determines
the magnetic force by considering CAN signals (wheel
speed, engine torque, pedal opening, ABS/ESP CAN
signals, etc.) from other ECUs.
Inhibitor switch
Torque converter Oil pan
E-coupling sideRear axle side
Propeller shaft
1) 4WD Vehicle With Automatic Transmission
GSLDSLInhibitor switch
Torque converter Oil pan
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M6LF1 manual transmission
M6LF1 manual transmission is a model modified from the
one that used in other vehicle so that it can be applied to FF
(Front engine-Front wheel driving) type vehicle, and has an
axle in one piece. The engine torque and gear ratio of this
transmission have been optimized to maximize driving
performance. It provides 6 speeds for forward travel and 1
reverse travel.
Clutch assembly
M6LF1 manual transmission is a model modified from the
one that used in other vehicle so that it can be applied to FF
(Front engine-Front wheel driving) type vehicle, and has an
axle in one piece. The engine torque and gear ratio of this
transmission have been optimized to maximize driving
performance. It provides 6 speeds for forward travel and 1
reverse travel.
The 2WD vehicle with manual transmission is a front wheel drive type vehicle that doesn't have PTU,
propeller shaft, E-coupling and rear axle which are applied to 4WD vehicle. Its under structure is very
simple.
Manual gear selector lever
Transmission sideControl shaft assembly
Transaxle side
Concentric slave assembly
Pressure plate
2) 2WD Vehicle With Manual Transmission
Clutch disc
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Front sub frame with HPS type steering gear box assembly
The front sub frame consists of 4 body bush mountings and 2 transmission
bush mountings which reduce the vibration from the powertrain and road,
and also control the torque. And the frame is equipped with hydraulic
pressure pipe of the HPS type steering gear box.
4. SUB FRAME AND STEERING GEAR BOX LAYOUT
Front sub frame with EPS type steering gear box assembly
This kind of front sub frame system has the same mounting structure with
the frame with HPS. But the EPS type steering gear box has no hydraulic
pressure pipe since it is driven by the electric motor.
Rear side
Front sideHPS type steering
gear box assembly
Front sub frame
assembly
Rear side
Front side
EPS type steering
gear box assembly
Front sub frame
assembly
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Rear sub frame assembly for 4WD
The rear sub frame for 4WD vehicle consists of 4 body (bush)
mountings and 2 axle (direct) mountings which reduce the vibration from
the powertrain and road, and also control the torque.
Rear side
Front side Body mounting
Rear sub frame assembly for 2WD
The rear sub frame for 2WD vehicle functions in the same way as the
one for 4WD vehicle, but the structure is different from the one for 4WD.
It consists of 4 body (bush) mountings.
Body mounting
Body mounting Body mountingAxle mounting
Front side
Body mounting Body mounting
Rear sideBody mountingBody mounting
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Stabilizer bar assembly
The stabilizer bar assembly is not activated if the left/right
wheels move up/down simultaneously, but if both wheels
move up/down differently it is activated with frame to
minimize the tilting of the body.
5. FRONT SUSPENSION COMPONENT LAYOUT
Front suspension supports the vehicle weight and absorber the vibration from tires. And, in this type of
suspension, the steering linkage tie rod is mounted on the knuckle. The Macpherson Strut suspension
is an independent suspension which has a spring on the strut with a built-in shock absorber. The lower
arm is installed on sub frame and large strut damper is installed on the knuckle to support the tire.
Lower arm assembly
The lower arm assembly connects the frame and
knuckle. It supports the load transferred to the tire
knuckle, relieves the impact from the vehicle and ground
conditions, and ensures driving stability.
Stabilizer bar
Bushing
Clamp
Link
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Front coil spring assembly
The coil spring is made by winding solid steel rod to form
the coil shape. Its energy absorption rate per weight is
higher than that of the leaf spring and it allows to absorb
small vibration properly resulted in keeping the ride
comforts. Therefore, it's difficult to make an effect on
vibration damping because there is not any friction
between coils.
Coil spring
Shock absorber assembly
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6. REAR SUSPENSION COMPONENT LAYOUT
Multi-link type suspension is the independent suspension. It provides good ride comfort and drivability
by reducing the coil spring weight. Also, it increases the space for passenger compartment by lowering
the floor.
This type of suspension consists of multiple links such as trailing arm, upper arm, lower arm and track
rod.
Shock absorber assembly
This vehicle uses the gas
shock absorber. This
relieves the vertical
vibrations of vehicle to
provide ride comforts,
prevents the spring break,
enhances drivability, and
extends the life span of
steering components.
Upper arm assembly
Upper arm is installed between knuckle and sub
frame and controls the lateral load and vehicle
height.
Trailing arm assembly
Trailing arm is installed between knuckle and
vehicle body and controls the front and rear load.
Track rod assembly
Track rod is installed between knuckle and rear
sub frame and controls and compensates the
lateral load.