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- Variable Valve Timing and Lift Electronic Control System. 可变气门正时及升程电子控制系统。
- VTi stands for “Variable valve lift and Timing Injection”. 积分是“可变阀门升程和定时注射".
- Electromagnetic valve actuation (EVA) is a new kind of variable valve timing technology. 摘要电磁气门驱动是一种新型的可变配气相位技术。
- For 2009, the HHR's base 2.2-liter engine gained variable valve timing and the ability to run on E85. 2009年，是和记港陆的基地2.;2升发动机升可变气门正时和能力上运行的E85。
- The designed VVT (variable valve timing) system can change the valve timing in running condition. 摘要开发了变进排气正时控制机构，实现气门正时的调节。
- 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。
- Electromechanical valve actuator system (EMVA) uses solenoid to drive each valve independently for achieving variable valve timing (VVT). 电磁式汽门机构使用电磁螺线管式驱动汽门，免除凸轮轴，各汽门可独立控制。
- This paper is mainly involved in the technical analysis of vehicle gasoline engine latest technology - variable valve timing-driven institutions of (VVA). 本论文主要涉及研究方向是车用汽油机最新技术-可变气门驱动机构VVA的的技术分析。
- Abstract ：In this paper, the in-cylinder flow characteristics under variable valve lift (VVL) were studied in a single-cylinder four-valve optical SI engine. 摘要 ：在一台四气门可视化光学发动机上，研究了可变气门升程下缸内气体流动特性。
- Engine efficiency is also improved by the use of direct injection (DI) and continuously variable valve timing (VVT) on both the inlet and exhaust sides. 进出口的引擎效率也由直接注射法（DI）和发动机可变气门正时技术（VVT）的运用而改进。
- Related to the MZR engine in the Mazda3, but lacking variable valve timing, the Duratec four-banger is available as a PZEV (Partial Zero Emissions Vehicle) engine in some states. 相关MZR发动机的马自达3，但仍缺乏可变气门正时，该Duratec四banger可作为零污染（部分零排放车辆）引擎在某些国家。
- 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。
- This paper gives a brief introduction on the technology of variable valve timing (VVT) and variable-lift, and brings forward a new cam structure which is simple and practical. 摘要本文简要介绍了可变气门正时(VVT)及可变升程技术，提出了一种简单而实用的新型凸轮结构。
- The process uses less fuel and more air to generate power by using advanced technologies, direct injection, electric cam phasing, variable valve lift and cylinder pressure sensing. 该过程使用的燃料和更多的空气来发电用先进的技术，直接喷射，电子凸轮分阶段，可变阀门升程以及缸内压力传感.
- Variable valve actuation (VVA) is one of the most efficient methods to achieve homogeneous charge compression ignition (HCCI) and transition between HCCI and SI combustion on gasoline engine. 摘要全可变气门技术是目前汽油机上实现均质充量压缩燃烧(HCCI)及HCCI与火花点火(SI)燃烧模式之间过渡最为切实有效的技术途径之一。
- 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. 摘要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。
- Variable valve actuation(VVA) is one of the most efficient methods to achieve homogeneous charge compression ignition(HCCI) and transition between HCCI and SI combustion on gasoline engine. 全可变气门技术是目前汽油机上实现均质充量压缩燃烧(HCCI)及HCCI与火花点火(SI)燃烧模式之间过渡最为切实有效的技术途径之一。
- In this thesis, we propose a new method to implement variable valve timing by positioning the angular position of camshaft.The camshaft then drives the valve to track designed trajectory. 本文提出一个新构想，透过控制凸轮轴的角位移，便可间接控制汽门的直线位移，让汽门依照事先规划的轨迹运动，实现可变汽门正时。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- The prices are variable, shop around by all means. 价格高低不一，所以一定要货比三家逐店选购。
