MIVEC-MD Engine 1993
In 1993, the MIVEC (Mitsubishi Innovative Valve timing and lift Electronic Control) engine went into production. At that time, the MIVEC led its class in fuel economy at 16km/l in urban driving without sacrificing power. The key to the MIVEC engine's outstanding operating performance is the three mode regulated operation. Depending on driving conditions, the MIVEC system switches between low-speed, high-speed and MD (modulated displacement) modes. Modified cam and rocker profiles provide the most efficient operation possible in the first two modes. In MD mode, the MIVEC engine utilizes only two of its four cylinders, which reduces significantly the energy wasted due to pumping losses. In addition, power loss due to engine friction is also reduced. Advanced cylinder air flow control technology found in the MVV engine is incorporated in the MIVEC, improving combustion performance.
Lancer, Mirage (Colt) and FTO models marketed in Japan are equipped with the MIVEC engine.