Variable valve train enables the engine to achieve the best valve timing at a very high speed and load. Thus the performance of the engine can be improved.
配气可变机构可使发动机在较高转速和全负荷范围都能得到最佳配气，因而改善了发动机性能。
Fully variable valve train may realize continuously variable valve timing and valve lift, and so it represents development trend of variable valve technology.
全可变气门机构能实现发动机配气定时和气门升程的连续可变，是可变气门技术的发展趋势。
Experimen and dynamic analysis of a valve train with hydraulic lash adjuster (HLA) were reported.
对一个有直动式液压间隙调节器(HLA)的气门机构进行了试验和动力学计算分析。
The validity of the simulation calculations results on the valve train is validated by the forces testing.
配气机构受力测试实验验证了配气机构模拟计算的有效性。
The nonlinear mathematic model for the valve train system is set up and its dynamic characteristics are analyzed.
建立系统非线性数学模型，并分析配气机构的动态特性。
The results show that the method is feasible and effective to achieving the on-line motoring and diagnosis of valve train faults.
诊断结果表明该方法是可行的，便于实现柴油机气阀机构故障的在线实时监测与诊断。
The results show that the method is feasible and effective on achieving the on-line motoring and the diagnosis of valve train faults.
结果表明该方法是可行的，便于实现气阀机构故障的在线实时监测与诊断。
Camshafts play an important part in the valve train of engine, their accuracy of finish can affect the unitary performance of engine.
凸轮轴是汽车发动机配气机构的一个非常重要的机械部件，它的加工精度直接影响到汽车发动机的整体性能。
To solve the problems existed in the valve train of WD618.44 diesel engine, a new polynomial high power exhaust CAM profile was designed.
采用多项式高次方凸轮对WD 618.44柴油机原排气凸轮进行了改进设计。
In this calculation model for the movement rule of valve train system with rocker, the position of every component is determined, so it has a high precision.
建立摇杆式配气机构运动规律的精确计算模型，给出了每一时刻下配气机构各部件的准确位置，具有较高的精度。
Testing results also show that by reasonably matching the structural parameters, the fully variable hydraulic valve train can give steadily opening and seating.
试验结果同时表明，通过合理匹配有关结构参数，全可变液压气门机构可实现气门平稳开启和平稳落座。
Aimed at the deficiencies of traditional design method for valve train CAM, a new method for designing CAM profile with analysis functions and numerical synthesis is proposed.
重点针对配气凸轮传统设计方法的缺陷，提出一种用解析函数法与数值法相结合设计凸轮型线的新方法。
The Characteristics of valve movement using fully variable hydraulic valve train is studied by measurement of valve lift and oil pressure of fully variable hydraulic valve train.
通过对全可变液压气门机构的气门升程和液压压力的试验测量，研究了全可变液压气门机构的气门运动特性。
A 170f diesel valve train was taken as example, one-mass, two-mass and four-mass models were built and the valve dynamic characteristics experiment was also carried out accordingly.
以170f柴油机为例，建立单质量、二质量和四质量三种配气机构动力学模型，并相应进行气门动态特性试验研究。
Valve train system is an important part of automobile engine and its designing level has great influence on the performance, reliability and life-span of engine.
配气机构是发动机的重要机构之一，其设计好坏对发动机的性能、可靠性和寿命有着很大的影响。
Calculation program of CAM lift curve is worked out. Valve train of engine is redesigned, and CAM is amended to FB2 type. Then, performance of engine is optimized further.
编制了凸轮升程曲线计算程序，对发动机的配气机构进行了重新设计，确定将配气凸轮修改成为FB2型，使得发动机性能得到进一步优化。
Calculation program of CAM lift curve is worked out. Valve train of engine is redesigned, and CAM is amended to FB2 type. Then, performance of engine is optimized further.
编制了凸轮升程曲线计算程序，对发动机的配气机构进行了重新设计，确定将配气凸轮修改成为FB2型，使得发动机性能得到进一步优化。
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