INVECS (Intelligent & Innovative Vehicle Electronic Control System)
, Mitsubishi Motors website is the

brand name A brand is a name, term, design, symbol or any other feature that distinguishes one seller's goods or service from those of other sellers. Brands are used in business, marketing, and advertising for recognition and, importantly, to create and ...

used by

Mitsubishi Motors is a Japanese Multinational corporation, multinational Automotive industry, automobile manufacturer headquartered in Minato, Tokyo, Japan.

for its electronic

automatic transmission An automatic transmission (AT) or automatic gearbox is a multi-speed transmission (mechanics), transmission used in motor vehicles that does not require any input from the driver to change forward gears under normal driving conditions. The 1904 ...

technology.

INVECS

The first generation of ''INVECS'' debuted in the seventh generation of the Mitsubishi Galant, which was introduced in 1992.Fact & Figures 2000
, p.45, Mitsubishi Motors website"Control Technology"
, Mitsubishi Motors South Africa website An array of sensors continuously monitored six parameters and, using "

fuzzy logic Fuzzy logic is a form of many-valued logic in which the truth value of variables may be any real number between 0 and 1. It is employed to handle the concept of partial truth, where the truth value may range between completely true and completely ...

", adapted the shift patterns in the automatic gearbox "on the fly" according to the driver's style. The

four-wheel drive A four-wheel drive, also called 4×4 ("four by four") or 4WD, is a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case pr ...

, four-wheel steering,

traction control system A traction control system (TCS), is typically (but not necessarily) a secondary function of the electronic stability control (ESC) on production motor vehicles, designed to prevent loss of traction (i.e., wheelspin) of the driven road wheels. TC ...

and suspension were all similarly adapted based on the same sensor data. INVECS would, for example, downshift to increase

engine braking Engine braking occurs when the retarding forces within an internal combustion engine are used to slow down a motor vehicle, as opposed to using additional external braking mechanisms such as friction brakes or magnetic brakes. The term is ofte ...

while travelling downhill, or similarly automate transmission processes which were previously only controlled manually by the driver."Fuzzy-Mitsubishi"
Peter G. Neumann, April 9, 1992

INVECS-II

Despite sharing its name with the previous system, the second version of ''INVECS'' was a radical development, based on

Porsche Dr. Ing. h.c. F. Porsche AG, usually shortened to Porsche (; see below), is a German automobile manufacturer specializing in luxury, high-performance sports cars, SUVs and sedans, headquartered in Stuttgart, Baden-Württemberg, Germany. Th ...

's Tiptronic technology."Automatic with manual override"
, Mark Wan, AutoZine Technical School As with Porsche's version it allowed for either a ''fully-automatic'' mode, or a ''

clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does th ...

less manual mode'' if the driver wished to control the up- and down-shift points. It also offered the same Adaptive Shift Control software which monitored and "learned" the driver's habits over time and adjusted the smoothness or aggression of the gearshifts to suit their driving style."Technical Features: INVECS-II"
Mitsubishi Motors UK website It was first implemented in the new

Mitsubishi FTO The Mitsubishi FTO is a Front mid-engine, front-wheel-drive layout, front mid-engined, front-wheel drive coupe produced by Mitsubishi Motors between 1994 and 2000. Originally planned exclusively for the Japanese domestic market, its popularity as ...

in 1994.

INVECS-III

The third version of ''INVECS'' was further advanced, and now offered a

continuously variable transmission A continuously variable transmission (CVT) is an automated Transmission (mechanical device), transmission that can change through a continuous range of gear ratios, typically resulting in better fuel economy in gasoline applications. This contr ...

when in ''fully-automatic'' mode, or a simulated six-speed ''clutchless manual'' if the driver wished to control the up- and down-shift points. A further innovation for Mitsubishi was the introduction of paddle-shifters allowing the driver to make manual gear changes while their hands remain on the steering wheel."Mitsubishi Motors Exhibits at 39th Tokyo Motor Show"
, Mitsubishi Motors press release, September 28, 2005 ''INVECS-III'' was introduced in 2000, in the eighth generation of the Mitsubishi Lancer."Line-off ceremony marks start of CVT mass production"
Mitsubishi Motors press release, April 19, 2000
Mitsubishi Motors press release, May 9, 2000 The paddle-shift option was first seen on the second generation Mitsubishi Outlander which debuted in 2005."Mitsubishi Motors launches all-new Outlander"
Mitsubishi Motors press release, October 17, 2005

References

External links

*Mitsubishi Motors technology library page

{{Mitsubishi Motors technologies Automatic transmission tradenames Mitsubishi Motors technologies Continuously variable transmissions