Auto Transmission's

DAY1:


Today we started by striping down the automatic transmission and identifying some of the components:

above: the gear box at the start before we take it apart

above: this is the governor

above: the Automatic transmission screen

left: input shaft and clutch assembly  right: oil pump
***Note: there is further description of the parts on "DAY 2"


DAY 2:
Today we discussed what the purpose of a torque converter is and its purpose and eight major components of the automatic engine is:
1.Torque converter: transfer's torque from the engine to the transmission and multiplies torque
2. oil pump: supplies oil to the transmission system

oil pump on the right
3. Planetary gears: supplies power flow through the transmission
4. Input shaft: provides power from the engine and prevents slippage
5. Output shaft: supplies the wheels with power
6. Governor: sence's the speed the vehicle is travelling and the throttle percentage

7. Clutch assembly: acts as a friction plate and a hydraulic piston to energize or de-energize the clutch
8. Transmission screen: filter's the transmission fluid

DAY 3
Today we describe what a servo does in a auto transmission, describe 2 advantages of a lock up torque converter and re-assembled  our rear wheel drive transmission, The servo in the transmission holds the bands or controls the bands.
The 2 advantages of using a lock up torque converter are, 1. they get 2% more power due to less slippage
2. increase the fuel economy 2% at mid power with low throttle

Day 4: Today Myself, James and Jiejun dis-assembled a front-wheel drive trans-axel automatic gear box to look at how it works

And compare it to the previous rear wheel drive gear box

We went through components in there various positions in the trans axel such as the valve body (this has a vacume system to determine throttle position

In the bell housing we can see the various shafts, the oil pump, stator and input shafts

The oil pump her is run from a shaft that runs through the transmission from the torque converter

The image below is of the transmission housing after the clutch packs and planetary gears are removed

The governer on this transaxel is on the side of it as appose to the rear wheel drive governer which runs on the shaft

This is the innerts of the transmission with the clutch packs and planetary gears ect,

After this Myself, James and Jiejun proceeded to re assemble the transaxel gearbox.