The clutches and brakes that operate the planetary gear unit are operated by hydraulic pressure. The hydraulic control unit generates and adjusts this hydraulic pressure and switches its passage. The illustration Read more Hydraulic Control Unit
Yearly Archives: 2010
Types of Planetary Gear Unit
There are various types of planetary gear units. Here, typical planetary gear units are:
1. 3-speed + O/D type (FF vehicles)
By combining a 3-speed planetary gear unit with an O/D gear unit, four Read more Types of Planetary Gear Unit
What is Overdrive Gear Unit?
The overdrive gear unit is an independent planetary gear unit with a gear ratio less than 1.0 (approx. 0.7-0.8). It is combined with a conventional 3-speed planetary gear unit and is equivalent to the Read more What is Overdrive Gear Unit?
Power Transmission and Manual Transmission Path
Manual transaxles are located at the left end or right end of transversely mounted engines in FF vehicles. Manual transmissions are located to the rear of vertically mounted engines in FR vehicles.
Operations of Planetary Gear Unit
1. 1st gear
(1) The input shaft turns the front planetaryring gear clockwise by C1.
(2) The front planetary pinion gear turns and revolves and makes the sun gear turn counterclockwise.
(3) In the rear Read more Operations of Planetary Gear Unit
What is an Automotive Manual Transaxle drive train?
The drive train transmits the power of the engine to the wheels. It is broadly divided into the following classifications:
1. FF (Front engine-Front wheel drive vehicle)
The drive force from the Read more What is an Automotive Manual Transaxle drive train?
What is Clutches (C1 and C2) Construction?
The clutches connecting and disconnecting the power are C1 and C2. The clutch C1 acts to transmit power from the torque converter to the front ring gear via the input shaft. The discs and plates are lined Read more What is Clutches (C1 and C2) Construction?
Outline of Manual Transaxle of a Car
A manual transaxle (manual transmission) is a device that increases and decreases the engine speed by the gear and converts it to appropriate torque in order to transmit it to the drive wheels.
What is Brakes (B1, B2 and B3)?
There are two types of brakes fixing elements: the band type and the wet multiple-disc type. The band type is used for the B1 brake and the wet multiple-disc type for the B2 and B3 brakes. In some automatic Read more What is Brakes (B1, B2 and B3)?
What is Planetary Gear Unit?
In automatic transaxle vehicles, the planetary gear unit handles deceleration, reverse, direct connection, and acceleration. The planetary gear unit consists of the planetary gears, clutches, and brakes. Read more What is Planetary Gear Unit?