VVT

study on dual-spark plugs for rapid combustion and multi-state vvt system of small and high-speed gasoline engine

小型高速汽油机双火花塞速燃多工况VVT系统研究

The Pilot Research on Motorcycle Engine of Medium and Small Displacement VVT Institutions

中小排量摩托车发动机VVT机构的试验研究

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 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。

OCV is the oil control valve of VVT engine, which determines when the intake valve open and close. The main purpose of actuator is to change the camshaft phase.

OCV是可变气门正时发动机上控制发动机的进气门正时的机油控制阀，执行器是改变凸轮轴相位的控制器。

vvt phase selection test to verify the reasonableness of the valve timing.

通过配气相位选型试验，验证了配气相位的合理性。

the cam profile was designed combining vvt mechanism.

结合本文所设计的VVT机构，对主凸轮型线设计做了详细的阐述。

the completed works as follows: firstly, complete the design work of vvt mechanism.

完成的工作如下：首先，完成了VVT机构的设计工作。

the basic structure, working principle, fault codes and inspection of the main elements of the vvt system on faw mazda 6 are introduced here.

介绍一汽MAZDA6可变气门正时系统的基本结构、工作原理、故障码及主要元件的检修方法。

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。

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。

principle and inspection of vvt system on faw mazda 6

一汽MAZDA6可变气门正时机构的原理与检修

controlling strategy and operational mode were investigated and analyzed, and timing parameters of the vvt system were optimized by running the cycle simulation model.

分析了VVT控制策略和运行模式，对VVT机构配气正时参数进行了优化。

a cycle simulation model insetting the vvt mechanism module with tow-mode intake timing parameters was created, and was verified by comparing the simulation results with the engine rig testing data.

建立了嵌入可切换双进气正时VVT系统的发动机循环仿真模型，通过实验测试对仿真模型进行了验证；

it has been proved that the jl156fmi motorcycle engine performance could be effectively improved by loading the new type vvt system.

实验表明：通过加装这种切换凸轮型线VVT系统能够有效提高JL156FMI型摩托车发动机的动力性和燃油经济性。

Design and Optimization of VVT System Parameters for Motorcycle Engine

摩托车发动机VVT系统参数的设计与优化

ocv and actuator' performance will directly affect the system performance of vvt.

OCV及执行器的性能好坏将直接影响VVT系统的整体性能。

Cycle Analysis and Simulation of Motorcycle Engine with Switching Cam Profile VVT System

摩托车可变配气正时发动机的循环仿真与分析

the test results show that this vvt mechanism is simple in structure, less modification for the engine, low cost for production. it can realize the variable control for valve timing and improve the engine performance markedly.

试验结果表明：该机构结构简单，对原机改动小，成本低，能够实现配气相位的可变控制，明显改善了发动机性能。

Development of an Electrical Control VVT System for High Speed SI Engines

车用高速汽油机电控可变配气相位系统

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。

The adjustment on thermodynamic cycle process and operation parameters of motorcycle engine by VVT mechanism is analyzed.

对VVT机构调整摩托车发动机热力循环过程和运行参数进行分析。

this vvt system is suitable for high-speed automotive gasoline engines with dohc.

该系统适合于顶置双凸轮轴车用高速汽油机。

a new developed electrical control vvt system is presented which uses a tensioner with variable working position to change the intake valve-closing angle.

本文介绍了一种基于可变位置液压张紧器机构实现控制进气门关闭相位角的电控可变配气相位系统。

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 possible technical approaches to improve engine performance have been studied using simulation, including the variable intake runner length and the intake vvt technologies. 2.

通过仿真计算研究了改善发动机动力性能的可行性技术方案，重点介绍了可变进气歧管技术和可变进气门正时技术。

Finally, the variety of each parameter of VVT under the different work condition is decided.

最终确定了在不同工况下, VVT各参数的变化.

Analyze package layout focus on cam phase controller, oil pressure control valve, cylinder head VVT oil supply gallery etc. And conduct test verification and data analysis on engine test bed.

重点对凸轮相位控制器、油压控制电磁阀、缸盖VVT供油通路等布置方案进行了分析。并且通过发动机台架试验进行了试验验证和数据分析。

based on cycle simulation, a cycle simulation model of vvt mechanism for motorcycle engine is created.

以一维CFD计算为基础，建立了摩托车发动机VVT系统的循环仿真模型。

design and experiment of hydro-extender vvt mechanism

液压张紧器式可变配气相位机构的设计与试验