2. Do not have a clutch pedal, but has
a complex set
of combined clutch and "fluid coupling"
between the engine and transmission.
After the driver choose the gear via gear
level, gear ratios will automatically switch
to either increase or decrease according
to driving conditions and road conditions.
4. PARKING - Usually used when parking the vehicle
to avoid self-moving vehicle.
REVERSE - Used during a mood reverse to vehicles.
NEUTRAL - Used to release the gear. (gear in free mode)
DRIVE - Used in normal drive.
2 nd - Used in a crowded street when the road curved.
shift gear only happens in gear 1 and 2 only
LOCK-UP - Only gear 1 has happens
5.
6. Role Of Torque ConverterRole Of Torque Converter
Serve as automatic clutch with transmit
engine torque to transmission.
Transmit Torque from engine with
smoothly.
Absorbs torsion vibration of the engine
drive train.
7. FUNCTION OF ATFFUNCTION OF ATF
Act as lubricant in Automatic Transmission.
To control Lock-Up Clutch opening.
Act as a heat transfer medium from Torque
Converter to Engine cooling system.
11. Integrated with t/converter case.
Have many CURVED VANE.
Impeller driven by engine crankshaft and
fluid in impeller rotates with it.
When speed of impeller is increase,
centrifugal force cause the fluid to outward
toward the impeller (out side vane).
13. Located in t/converter case, but it
mounted to transmission shaft.
Turbine vane is OPPOSITE DIRECTION
from impeller vane. it were design to
capture the fluid thrust from impeller.
Therefore, torque were transmit to
transmission input shaft and turning the
same direction with impeller.
15. Located between impeller and turbine.
It mounted to stator shaft which fix to
transmission case.
The vane of the stator catch (collect) the
fluid as it leave the turbine and redirects it
to back to impeller.
16. One-way clutchOne-way clutch
Allow the stator to rotate in same
direction as engine crankshaft.
If stator attempt to rotate opposite
direction, the ONE-WAY CLUTCH will
lock the stator to prevent it from
rotating.
19. 1. Impeller was driven by engine crankshaft, when impeller SPEED IS
INCREASE, CENTRIFUGAL FORCE cause the fluid to flow
OUTWARD from center of impeller and flow towards the VANE
SURFACES (OUTER) of impeller.
2. As impeller speed is rise further, the fluid is FORCE OUT away
from impeller to TURBINE.
3. The fluid was strike to the VANE OF TURBINE (OUTER) causing
the turbine to begin ROTATING in the SAME DIRECTION as
impeller.
4. After fluid DISSIPATES ITS ENERGY AGAINST THE VANE
(OUTER) OF TURBINE, it flow inward along the vanes of turbine.
5. When fluid is reach the interior of turbine, the turbine’s curved
inner surface (inner vane) direct to VANE OF STATOR,
6. And the cycle was begins again.
20.
21. To make turbine keep running as long as
impeller was running, t/converter must
have a fluid flow.
The flow inside t/converter are divide by
two:-
i) Vortec flow
ii) Rotary flow
22. VORTEX FLOWVORTEX FLOW
Is a SPIRALING FLOW which continues
as long as there is a difference speed
between impeller and turbine.
27. When rotation speed of turbine almost same with
impeller, TORQUE from ENGINE were TRANSMITS to
the TRANSMISSION at ratio almost 1;1.
By the way, not 100% TORQUE is transmit to
transmission. Approximately 4-5% loss energy during
TORQUE TRANSMITS.
The function of lock-up clutch is:-
1. To REDUCE LOSS energy during torque transmit.
2. To REDUCE FUEL CONSUMPTION.
28.
29. PIC - APIC - A
1. When vehicle speeds are below 37 mph ( 60 km/h), the
lock-up clutch is disengaged.
2. The fluid pressure travel from RELAY VALVE thought
t/converter and to cooling system.
3. Lock-up clutch is DISENGAGED because of fluid
pressure around lock-up clutch are same (front and
rear).
4. At the same time the DRAIN HOSE is in CLOSE
POSITION.
30. PIC - BPIC - B
When the vehicle is running at above 37 mph (60 km/h),
the pressure fluid flow into the area to rear of lock-up
clutch.
The RELAY VALVE position opens a DRAIN to the area
in front of lock-up clutch, therefore created an area of
low pressure.
Because of that, lock-up clutch piston is forced against the
converter case by difference in hydraulic pressure on each
side of lock-up clutch.
So that, the lock-up clutch is rotate together with
t/converter case.
31.
32. Planetary Gear SetPlanetary Gear Set
In automatic transmission, we have 4 set
components in PLANETARY SET.
i. RING GEAR
ii. SUN GEAR
iii. PLANETARY/ PINION/ SIDE GEAR
iv. CARRIED
38. 1. Internal teeth of RING GEAR TURN
CLOCKWISE. (as input)
2. The external teeth of pinion/side/planetary
gear WALK AROUND the fix sun gear (sun
gear is in HELD mode) while rotating
CLOCKWISE.
3. This cause the CARRIED to rotate at a
REDUCE SPEED. (as output)
40. 1. Carried turn clockwise (as INPUT).
2. External toothed pinion/side/ planetary gear
WALK AROUND the external sun gear (sun
gear in HELD MODE).
3. Pinion/side/planetary gear CAUSE the internal
ring gear (as OUT PUT) to accelerate to a
speed GREATER than carried speed in a
clockwise direction.
42. 1. Carried in HELD MODE.
2. When external tooth SUN gear (as INPUT)
turns CLOCKWISE.
3. The external side/pinion/planetary gear drive
the internal RING GEAR (as OUTPUT) in the
OPPOSITE DIRECTION.
43.
44.
45.
46. Oil seal rings SEAL the fluid between the clutch drum and oil pump
stator.
Seals are mounted on inner and outer piston.
Relief ball valve is housed in piston body to release hydraulic fluid
when the clutch is released.
When the drum was rotates, some fluid remains behind the piston
and centrifugal force cause the fluid flow to the outer diameter of
the drum.
Infect that the relief ball valve was close the relief valve to prevent
from fluid flow to inner clutch set. Then the clutch set was engage
with each others.
When speed were decrease, the pressure also drops, centrifugal
force cause the Ball move away from the valve seat.
Its allowed the fluid escape and flow into the clutch set, it’s cause the
clutch set were disengaged.
47. i. Historical of TIPTRONIC TRANSMISSION.
ii. What is Manumatic.
iii. What is Tradename of Manumatic each car maker:-
◦ Aston Martin, BMW, Ford (USA), Honda, Hyundai, Kia, Lexus, Mazda,
Mercedes-Benz, Mitsubishi, Nissan, Subaru, Peugeot, Chevrolet.
i. Basic operation of Tiptronic transmission.
Due date: 26/02/2012 before 4.30pm
Must be done by HAND WRITING & IN BAHASA MELAYU.
