韩国现代 轿车所开发的CVVT是一种通过电子 液压控制系统 改变凸轮轴打开进气门的时间早晚，从而控制所需的 气门重叠角 的技术。这项技术着重于第一个字母C （Continue连续），强调根据发动机的工作状况连续变化，时时控制气门重叠角的大小，从而改变气缸进 ...

Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems.

The benefits of Continuous Variable Valve Timing (CVVT) or more generally known as Variable Valve Timing (VVT), is known in the Automotive Industry including after market high performance sectors to improve engine efficiency by a respectable double digit margin. Notable potential of CVVT is exposure to camshaft degreeing.

韩国现代轿车所开发的CVVT是一种通过电子液压控制系统改变凸轮轴打开进气门的时间早晚，从而控制所需的气门重叠角的技术。这项技术着重于第一个字母C （Continue连续），强调根据发动机的工作状况连续变化，时时控制气门重叠角的大小，从而改变气缸进气量。

2006年10月17日 · The double overhead camshafts feature CVVT- Continuously Variable Valve Timing- in order to optimize combustion and improve emission levels. This means that both the cylinder head and the camshaft bearing housing have been redesigned for CVVT.

2020年9月24日 · What is CVVT (Continuously Variable Valve Timing) System. The CVVT is Hyundai named for his VVT, same as Kia cvvt engine, positioned at hyundai sonata exhaust camshaft, controls the open & close timing of intake valve to improve engine performance.

2012年6月14日 · This bulletin provides information related to the Oil Control Valve (OCV) used in Constant Variable Valve Timing (CVVT) systems.

• Hyundai®, Kia® and Volvo® have continuous variable valve timing (CVVT) • GM® and Vauxhall® have dual continuous variable cam phasing (DCVCP) • Ford® has twin independent variable camshaft timing (Ti-VCT • BMW® has Valvetronic® Most use the acronym VVT. They may all work slightly differently, but they all work toward producing ...

2015年7月14日 · Furthermore, the newer generation VVT design implements ‘Continuous Variable Valve Timing’ or CVVT system. Besides, the CVVT varies the valve timing continuously (or infinitely) which is digitally controlled by the engine ECU. Additionally, it optimizes the valve timing for all engine speeds and conditions. Although there are different ...

Oil Control Valve Operation • The OCV is controlled by the PCM. • The OCV controls the intake or exhaust cam timing by allowing oil pressure to move the cam phaser in the CVVT. • The OCV circuit also includes a filter. Oil Control Valve