What does ivtec mean?
2 Answers
ivtec is the English abbreviation for Honda's intelligent variable valve timing system. The engines of new Honda cars are generally equipped with the ivtec system. Honda's ivtec system can continuously adjust the valve timing and also regulate the valve lift. The working principle of ivtec is: when the engine shifts from low speed to high speed, the computer automatically directs the engine oil pressure to the small turbine inside the intake camshaft drive gear. Under this pressure, the small turbine rotates a certain angle relative to the gear housing, causing the camshaft to rotate forward or backward within a 60-degree range. This changes the timing of the intake valve opening, achieving the purpose of continuously adjusting the valve timing.
i-VTEC refers to Honda's Intelligent Variable Valve Timing and Lift Electronic Control System. Honda utilizes this technology to optimize engine performance, enabling the vehicle to achieve optimal conditions at various RPMs. It prioritizes fuel efficiency at low RPMs while delivering stronger power output at high RPMs. Having driven i-VTEC-equipped cars for over a decade, my most direct observation is that the engine sound suddenly becomes more vibrant and powerful during acceleration, like a beast being awakened. Honda incorporated an intelligent control module based on VTEC, which automatically adjusts the timing of intake valve opening and closing. Compared to conventional engines, it offers both fuel efficiency and driving pleasure, making it particularly suitable for owners who desire performance without sacrificing daily practicality. However, it's important to regularly change the specialized engine oil, as this is crucial for maintaining system precision.
