Ford 4F27E transmission
Encyclopedia
The 4F27E is a 4-speed automatic
transaxle
for transverse engine
use. It was jointly developed by Ford Motor Company
and Mazda
, which calls the unit the FN4A-EL.
The 4F27E is a 4-speed automatic with an added overdrive and is completely electronic, with all shifts controlled by solenoids. It has a four-element torque converter
that includes a torque converter clutch and geartrain with two planetary gearsets, a transfer-shaft gear final drive, and a differential
. The transaxle uses electronic shift control and is designed for operation in transverse powertrains for front-wheel drive vehicles. The hydraulic control system of the 4F27E transaxle has six electronically controlled solenoids for shift feel (through line pressure control), shift scheduling (through shift valve position control) and TCC apply, controlled by pulse-width modulation
(PWM).
Applications:
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
transaxle
Transaxle
In the automotive field, a transaxle is a major mechanical component that combines the functionality of the transmission, the differential, and associated components of the driven axle into one integrated assembly....
for transverse engine
Transverse engine
A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the long axis of the vehicle. Many modern front wheel drive vehicles use this engine mounting configuration...
use. It was jointly developed by Ford Motor Company
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...
and Mazda
Mazda
is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan.In 2007, Mazda produced almost 1.3 million vehicles for global sales...
, which calls the unit the FN4A-EL.
The 4F27E is a 4-speed automatic with an added overdrive and is completely electronic, with all shifts controlled by solenoids. It has a four-element torque converter
Torque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
that includes a torque converter clutch and geartrain with two planetary gearsets, a transfer-shaft gear final drive, and a differential
Differential (mechanics)
A differential is a device, usually, but not necessarily, employing gears, capable of transmitting torque and rotation through three shafts, almost always used in one of two ways: in one way, it receives one input and provides two outputs—this is found in most automobiles—and in the other way, it...
. The transaxle uses electronic shift control and is designed for operation in transverse powertrains for front-wheel drive vehicles. The hydraulic control system of the 4F27E transaxle has six electronically controlled solenoids for shift feel (through line pressure control), shift scheduling (through shift valve position control) and TCC apply, controlled by pulse-width modulation
Pulse-width modulation
Pulse-width modulation , or pulse-duration modulation , is a commonly used technique for controlling power to inertial electrical devices, made practical by modern electronic power switches....
(PWM).
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.82:1 | 1.50:1 | 1.00:1 | 0.73:1 | 2.65:1 |
Applications:
- Ford Focus with 2.0L Zetec engine & 2.3L Duratec engine
- Ford Fiesta 2008+, with 1,4l, 96hp engine
- Mazda Protegé
- Mazda3
- Mazda6