MIVEC™ (Mitsubishi Innovative Valve timing Electronic Control system)^[1] is the brand name of a variable valve timing engine technology developed by Mitsubishi Motors. MIVEC, as with other similar systems, varies the lift of the valves by using two different camshaft profiles. At low speeds, a mild (low-lift) cam lobe provides "normal" performance, while above a fixed engine speed a second set of cam lobes are activated, providing higher lift and duration; therefore a greater quantity of air into the combustion chamber which increases the power output. This article is about brands in marketing. ... Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. ... This article or section does not adequately cite its references or sources. ... Mitsubishi Motors Corporation ) is the fifth largest automaker in Japan and the thirteenth largest in the world by unit sales. ... A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. ... Computer animation of a camshaft The camshaft is an apparatus often used in piston engines to operate poppet valves. ... monkey ... Revolutions per minute (abbreviated rpm, RPM, r/min, or min-1) is a unit of frequency, commonly used to measure rotational speed, in particular in the case of rotation around a fixed axis. ... A combustion chamber is part of an engine in which fuel is burned. ...

MIVEC was first introduced in 1992 in their 4G92 powerplant, a 1,597 cc naturally aspirated DOHC 16 valve straight-4.^[2] The first cars to use this were the Mitsubishi Mirage hatchback and the Mitsubishi Lancer sedan. While the conventional 4G92 engine provided 145 PS at 7000 rpm,^[3] the MIVEC-equipped engine could achieve 175 PS at 7500 rpm.^[4] Similar improvements were seen when the technology was applied to the 1994 Mitsubishi FTO, whose top-spec GPX variant had a 6A12 1997 cc DOHC 24 valve V6 with peak power of 200 PS at 7500 rpm.^[5] The GR model, whose otherwise identical powerplant was not MIVEC-equipped, produced 170 PS at 7000 rpm by comparison.^[6] The 4G9x series of straight-4 automobile engines is the latest Mitsubishi Motors design. ... A naturally-aspirated engine (NA - aspiration meaning breathing) refers to an internal combustion engine (normally petrol or diesel powered) that is neither turbocharged nor supercharged. ... A double overhead cam (also called a dual overhead cam, DOHC, or twincam) engine is a type of internal combustion engine where the camshafts that operate the intake and exhaust valves are mounted above the cylinders, and where there are separate camshafts for inlet and exhaust valves. ... The straight-4 or inline-4 is an internal combustion engine with four cylinders aligned in one row. ... The Mitsubishi Mirage is a subcompact car produced by Mitsubishi Motors from 1978 to 2002. ... Peugeot 306 hatchback, with the hatch lifted and the parcel shelf tilted for access Not a hatchback: a fastback like this Ford Mustang can be confused with a true hatchback Hatchback is term describing an automobile design, consisting of a passenger cabin with an integrated cargo space, accessed from behind... The Mitsubishi Lancer is a compact car built by Mitsubishi Motors. ... A Toyota Camry, a recognizable sedan The Ford Five Hundred, a full-sized sedan The 3-box design, indicative of a notchback sedan, as illustrated on a full-size luxury sedan. ... hp, see HP (disambiguation) The horsepower (hp) is the name of several non-metric units of power. ... rpm or RPM may mean: revolutions per minute RPM Package Manager (originally called Red Hat Package Manager) RPM (movie) RPM (band), a Brazilian rock band RPM (magazine), a former Canadian music industry magazine In firearms, Rounds Per Minute: how many shots an automatic weapon can fire in one minute On... The Mitsubishi FTO, is a front engined, front wheel drive sports car produced by Mitsubishi Motors between 1994 and 2000. ... The Mitsubishi 6A engine is a series of V6 engines from Mitsubishi Motors, found in their small and medium vehicles through the 1990s. ... A double overhead cam (also called a dual overhead cam, DOHC, or twincam) engine is a type of internal combustion engine where the camshafts that operate the intake and exhaust valves are mounted above the cylinders, and where there are separate camshafts for inlet and exhaust valves. ... The Ford Essex V6 engine V6 and V-6 redirect here. ...

Although initially designed to enhance performance, the system has subsequently been developed to improve economy and emissions, and has been introduced across Mitsubishi's range of vehicles, from the i kei car to the high-performance Lancer Evolution sedan. Many implementations only vary the valve timing (the amount of time per engine revolution that the intake port is open) and not the lift. This article needs copyediting (checking for proper English spelling, grammar, usage, etc. ... Silver and white Mitsubishi i Daihatsu Copen Daihatsu Cuore Suzuki Cappuccino Subaru R1 Kei car (K-car), also called keijidōsha (in Japanese: 軽自動車 light motor vehicle), is a Japanese category of small automobiles, including passenger cars, vans and pickup trucks. ... 2005 Lancer Evolution VIII MR Edition The Lancer Evolution is Mitsubishis flagship sports car, initially based on the Mitsubishi Lancer sedan, and is colloquially known as the Evo. The Evolution is the homologation model for Mitsubishis efforts in the World Rally Championships Group A class and SCCA...

MIVEC-MD

In the early years of developing its MIVEC technology, Mitsubishi also introduced a variant dubbed MIVEC-MD (Modulated Displacement),^[7][8] a form of variable displacement. Under a light throttle load, the intake and exhaust valves in two of the cylinders would remain closed, and the reduced pumping losses gave a claimed 10–20 percent improvement in fuel economy. Modulated Displacement was dropped around 1996.^[7] Variable displacement is an automobile engine technology that allows the engine displacement to change for improved fuel economy. ...

Current implementations

The Mitsubishi 3A9x engine is a range of all-alloy three cylinder engines from Mitsubishi Motors, introduced in the 2003 version of their Mitsubishi Colt supermini, and built by DaimlerChrysler-owned MDC Power in Germany. ... A cubic centimetre (cm3) is an SI derived unit of volume, equal to the volume of a cube with side length of 1 centimetre. ... A Straight-3 is an internal combustion engine with three cylinders arranged in a straight line side by side. ... The Mitsubishi 3B engine is a range of three cylinder engines from Mitsubishi Motors, introduced in 2003 in their Mitsubishi Colt supermini and 2006 Mitsubishi i kei car. ... The Mitsubishi 4A9x engine is a range of all-alloy inline four cylinder engines from Mitsubishi Motors, introduced in the 2003 version of their Mitsubishi Colt supermini, and built by DaimlerChrysler-owned MDC Power in Germany. ... The straight-4 or inline-4 is an internal combustion engine with four cylinders aligned in one row. ... The Mitsubishi 4A9x engine is a range of all-alloy inline four cylinder engines from Mitsubishi Motors, introduced in the 2003 version of their Mitsubishi Colt supermini, and built by DaimlerChrysler-owned MDC Power in Germany. ... The Mitsubishi 4B engine is the newest range of all-alloy straight-4 engines built at Mitsubishis Japanese powertrain plant in Shiga on the basis of the Global Engine Manufacturing Alliance (GEMA). ... The Mitsubishi 4B engine is the newest range of all-alloy straight-4 engines built at Mitsubishis Japanese powertrain plant in Shiga on the basis of the Global Engine Manufacturing Alliance (GEMA). ... The Mitsubishi Orion is series of straight-4 internal combustion engines, along with the Astron, Sirius, and Saturn. ... The Mitsubishi Orion is series of straight-4 internal combustion engines, along with the Astron, Sirius, and Saturn. ... Sirius is the name of one of Mitsubishi Motors four series of straight-4 automobile engines, along with Astron, Orion, and Saturn. ... Sirius is the name of one of Mitsubishi Motors four series of straight-4 automobile engines, along with Astron, Orion, and Saturn. ... The Mitsubishi 6B engine is a range of all-alloy V6 engines built at Mitsubishis Japanese powertrain plant in Shiga. ... The Ford Essex V6 engine V6 and V-6 redirect here. ... The Mitsubishi 6G is a series of V6 piston engines from Mitsubishi Motors. ...

Footnotes