The dual VVT-i (Variable Valve Timing-intelligent) controls the opening and closing timing of the exhaust valve as well as that of the intake valve. The ECM constantly controls the opening and closing timing of the intake and exhaust valves based on engine speed and throttle valve opening angle to enhance intake and exhaust efficiency in the whole range of engine speeds.
2. Electronically controlled Continuously Variable Transmission (ECVT) A transmission used on Lexus Hybrid vehicles. While traditional transmissions use fixed gears, ECVT can produce an infinite number of gear ratios to help provide optimal performance for all driving conditions. This helps improve both acceleration and fuel economy.
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