day one one Tuesday we got introduced to a auto transmission (rear) by Brian. we started stripping the transmission to all the parts.
the torque converters was explained to us by Brian, its got three main parts
cover = its hold everything together
turbine = driven member
impeller = driving member
stator = got a one way clutch inside
the torque converter is like a mechanical clutch it is bolted to a flex plate, the flex plate is like a flywheel.
it works by the engine crank shaft driving the impeller by the centrifugal force, and the vanes, the transmission fluid is forces out into the turbine side of the torque converter that makes that spin. the torque converter is full with transmission oil inside. the oil go thought the impeller in the same way as the impeller is routing
Valve body
the valve body controls the transmission the brain of automatic transmission. it connects to the oil pump, servo, clucth ,torque converter.There are two general types of valves, valves act on the shift valves at opposing ends of the valve to control the point at which
the transmission will shift gear.
Planetary gears
used for changing gear ratio in auto-transmission, there are three main parts the sun gear, planet carrier and pinions and ring gear that the pinion gears is connect to the sun gear and ring gear.ach of these three components can be the input, the output or can be held stationary.
bands
the band is a steel strap with material bonded (like a clucth plate) to the inside surface of the band which are used to hold the clutch gear sets. the servo control the band and allow pressure to tighten the band around the drum so the drum stops turning.
servo
servos is controlled by hydraulically valve body and that are apply pressure to the bands which
hold the drums together.
Input shaft
a input shaft transmit the power from the engine to the torque converter throw to transmission.
One-way clutch
a one way clutch is there so it allows a part like a ring gear to turn one way but not in the other freely
. you can find a one way clucth place in first gear when is in driven position, one way clucth also called a sprag clutch.
oil pump
a transmission oil pump is driven by the torque converter from the input shaft. the gear teeth's goes together that force the fluid through the outlet. the pump is used to provide fluid to lubricate the gears set continuous fluid to the torque converter operating, and a cooling system. there is three kind of gears : rotor type, gear type and vane type.
Governor
the governor proved pressure by hydraulic fluid controls its related to the road speed by the governor pressure.
It is connected to the output, so the faster the car moves, the faster the governor spins
clutch pack/clutch plates
a clutch pack has the 2 sun gears inside it, which mesh in with the pinions inside the planetary gears that works by hydraulic fluid pressure.
