Variable Valve Timing

Various new techniques , such as electronic control and variable valve timing , have been successively applied on the engine .

各种新技术如电控技术和可变气门正时技术等都先后在发动机上得到应用。

The EcoBoost is a compilation of long-standing technologies like direct injection , turbocharging and variable valve timing .

EcoBoost发动机在传统汽油发动机的基础上进一步汇集了燃油缸内直喷、涡轮增压及可变气门正时等存在已久的技术。

Simulation Research on Variable Valve Timing of Compressed Natural Gas Engine

天然气发动机可变气门定时的仿真研究

Design of motorcycle variable valve timing mechanisms automatic control device

摩托车可变配气正时机构自动控制装置的设计

Effects of Variable Valve Timing on the Engine Performance

可变配气相位对发动机性能的影响

Design and Research of Engine Variable Valve Timing Camshaft

对发动机可变气门正时凸轮轴的设计与研究

Electrohydraulic valve actuator system is a new kind of variable valve timing technology .

电液气门驱动系统是一种新的可变配气相位技术，可实现气门开启的全可变控制。

Study on Variable Valve Timing Mechanism

可变配气相位机构的研究

Generality of Progress about the Study of Automobile Engine Variable Valve Timing Chapter Mechanism

国外发动机可变配气相位研究进展&机构篇

A Research on a Variable Valve Timing Mechanism with Switching Cam for Motorcycle Engine

摩托车发动机切换凸轮型线可变配气正时机构研究

Variable Valve Timing and Lift Speed Governing Device for Motorcycle

摩托车用可变气门定时及升程调速机构

Variable Valve Timing Control of CCD

CCD摄像机；闭式循环柴油机可变配气控制

For Variable Valve Timing ( VVT ) system , a kind of self-learning control method was proposed .

针对可变相位机构，提出了一种自学习型的控制方法。

Design & Research of Variable Valve Timing Train with Direct-Acting Hydraulic Lash Adjuster

直动式液力间隙调节器可变配气相位机构设计研究

An automatic control device of motorcycle variable valve timing ( VVT ) mechanism is introduced based on double cam structure .

介绍了一种基于双凸轮结构的摩托车发动机可变配气正时（VVT）机构自动控制装置。

Because of the constraints of structure and production costs , the style of variable valve timing is mainly applied in automobile engines .

可变气门的形式有多种，但受到结构及生产成本的制约，主要应用在汽车发动机上。

The effective anti-wear additive system minimizes wear in even the most sophisticated valve train mechanisms , including those with variable valve timing .

在有效的抗磨损添加剂磨损降到最低，即使在最先进的气门驱动机制，包括可变气门正时的。

VVT-i system refers to " Variable Valve Timing Intake " . It can optimize gas distribution , adjust of valve timing .

VVT-i系统是指智能可变气门正时系统，该系统可对配气时机进行优化，调节气门正时。

Variable valve timing ( VVT ) mechanism of switching cam profile was developed for the small-medium displacement motorcycle engines .

本文在国内外VVT技术的基础上，设计了一种适合中、小排量摩托车发动机单顶置凸轮轴VVT机构。

The mechanism uses mainly hydraulic lash adjuster ( HLA ) and variable valve timing ( VVT ) technics .

该机构主要采用了液力间隙调节器（HLA）和可变配气相位（VVT）技术。

An electro-hydraulic drived variable valve timing system of exhaust valve was developed without any change of cylinder head structure and driving mechanism of exhaust valve .

在不改变气缸盖结构和保留原机进气门驱动机构的基础上，设计了一种电液驱动可变配气相位的排气门驱动机构。

With electronic control , this system can have a function of variable valve timing by rotating hydraulically driven intake and exhaust valve sleeves slightly .

通过电子控制技术，对该机构的液压阀套的角度微调，就能达到可变气门正时（VVT）。

The technology for the variable valve timing can not only improve the economy and the power of engine , but also reduce engine emissions , so it is valued from beginning .

同时，由于节气门对进气的节流作用，换气过程中的泵气损失明显增加，因此研制一种连续可变配气定时的配气机构，对于发动机节能减排具有十分重要的现实意义。

However variable valve timing ( VVT ) can better meet the different engine speed , load conditions and thereby improve overall engine performance for the allocation of gas is different requirements .

可变气门正时能够较好的满足发动机不同转速、负荷工况对于配气正时的不同要求，从而整体提高发动机综合性能，可变气门技术已成为衡量发动机性能的关键技术之一。

The switching cam profile variable valve timing ( VVT ) mechanism is able to control valve lifting and timing system through higher and lower intake rockers at different engine speed .

切换凸轮型线VVT机构通过高、低速摇臂的切换来实现不同转速的气门升程控制和正时系统。

The analysis shows that the CFD method could be employed as an effective way of determining valve timing for Variable Valve Timing System , Variable Camshaft System and even Non-cam Driven Valve System .

分析过程也表明，内燃机工作过程的CFD分析方法可以成为VVT系统、VCS系统或非凸轮驱动系统配气正时参数确定的一个有效手段。

Simulation and test results show that the novel electro-hydraulic valve train can achieve fully variable valve timing and lift control . Consequently the engine performance at different loads and speeds will be significantly enhanced .

仿真和试验结果表明，新的液压配气机构能实现可变气门正时及开度的控制，可适用于高转速发动机，具有一定的实用性。

Then , primary test of this cam is introduced . This new type cam structure can implement continuous Variable Valve Timing and continuous Variable-Lift simultaneity , which adapt to the developing tendency of VVT .

这种新型凸轮结构可以实现连续可变气门正时和气门升程，适应了无级式机电一体化可变气门正时和可变气门升程机构的发展趋势。

A variable valve timing ( VVT ) mechanism with switching cam is developed on a motorcycle engine with single overhead camshaft . The VVT mechanism has two sets of switchable intake valve timing parameter .

在摩托车发动机单顶置凸轮轴配气正时机构的结构形式基础上，研制一种可切换凸轮型线的VVT机构，具有2套可切换的进气配气正时参数。

With the emerging of electro-hydraulic variable valve timing technology , the methods of automotive engine valve gas distribution and its scalability have been greatly improved , and the fuel economy as well as the power has been greatly magnified .

随着电液可变气门技术的出现，汽车发动机气门配气方式以及可调节性都得到了很大的提高，发动机燃油经济性、动力性也得到了很大的改善。