一汽丰田花冠轿车1ZZ-FE发动机采用了VVT-i技术, VVT-i即Variable Valve Timing-intelligence(智能型可变气门正时系统)。1ZZ-FE发动机在进气凸轮轴上加装VVT-i控制机构,用于在不同发动机转速范围内调整进气门的气门正时,提高充气效率,从而改善发动机的怠速稳定性和低速平稳性,提高发动机功率和转矩,扩大发动机转速范围,降低部分负荷燃油消耗,改善废气排放。 FAW Toyota Corolla sedan 1ZZ-FE engine using VVT-i technology, VVT-i that Variable Valve Timing-intelligence (intelligent variable valve timing system). 1ZZ-FE engine in the intake camshaft equipped with VVT-i control mechanism used to adjust the valve timing of the intake valve in different engine speed range, improve the efficiency of the inflatable, so as to improve the engine idle speed stability and low speed smoothness , Increase engine power and torque, expand engine speed range, reduce part load fuel consumption, and improve exhaust emissions.