optimization design based on reliability for variable load cylinder helix compression spring

there. s an astonishing amount of life in old grove .

老 格鲁夫 还真有精神.

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the search box responds to partial word searches and updates search results as you type.

搜索框对应于部分单词搜索并在您键入时候更新搜索结果。

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it was found that the compression speed and compression stroke are the two factors affecting the molding pressure most significantly.

由模拟找出了压缩速度与压缩行程是两个影响成型压力极大的因素。

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the stratified phenomenon is obvious at the start point of the intake cycle, and the exhaust gas and the pre-mixed gas distribute on each side in cylinder of the engine respectively, which almost lasts to the end of compression stroke.

该分层的规律是在进气行程初期废气分层现象明显，废气和新鲜混合气各在气缸一侧，并维持到接近点火时刻；

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this critical piston position of crank angle should correspond to the time when the in-cylinder tumble has to be distorted and destroyed by the upward moving piston during the late stage of the compression stroke.

活塞临界位置与在压缩冲程后期活塞上行、缸内滚流开始畸变、破碎的活塞位置相当。

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for gasoline direct injection ( gdi) engines, the fuel is required to be injected into the cylinder near the end of the compression stroke to realize the stratified charge combustion at part load.

缸内直接喷射式汽油机，要求部分负荷时在压缩过程后期喷入燃油，实现混合气分层燃烧，以获得好的经济性；

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the study results show that, near the top of compression stroke, the turbulent motion is enhanced with the increasing in speed and throttling, enhanced with the decreasing in squeeze gap and compression ratio.

研究结果表明，在压缩上止点附近，缸内紊流运动随转速的升高、挤气间隙的减小以及节气门开度的增大而加强，但随压缩比的升高而减弱；

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this paper focuses on the direct injection gasoline during the compression stroke and expansion stroke, analyzes the change process of pressure, temperature and flow field during the fuel injection period, before and after fuel injection.

本文主要对直喷式汽油机在压缩冲程和膨胀冲程中的燃烧进行模拟，分析了喷油前、喷油中、喷油后压力、温度及流场的整个变化过程。

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during the compression stroke the turbulence kinetic energy decreases due to the dissipation effect, while the turbulence kinetic energy in the center of the cylinder increases as a result of the squish effect.

缸内平均湍动能强度在进气冲程中总体呈先增大后减小的趋势，压缩冲程中耗散作用使湍动能降低，但挤流作用使气缸中部的湍动能升高；

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at the end of compression stroke, the turbulent kinetic energy of flow around the edge of cylinder is weak, while that of squish in the middle is relatively strong.

压缩上止点附近气缸边缘的湍动能很弱，而气缸中部挤流区域的湍动能则相对很强。

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with the increase of crank angle, the mean kinetic energy of in-cylinder turbulence during compression stroke decreases at first, then increases and finally decreases again.

压缩过程中缸内气体的平均湍动能随曲轴转角的增大呈先减小后增大再减小的趋势。

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results show that turbulence intensity near the top dead center of the compression stroke under the inlet pressure at highland is obviously lower than that at sea-level.

结果表明，在模拟高原进气压力时，压缩上止点附近燃烧室内的湍流强度比在平原进气压力时明显下降。

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intake-generated tumbling motion has been recently proposed to enhance the turbulence level during compression stroke to promote the combustion rate and reduce operation variations.

最近倡议利用滚转运动增强引擎中之紊流强度，以增进燃烧效率与降低运转变异性。

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the result shows that tangent turbulence intensity is nearly the same from the outer to the center of the cylinder in the compression stroke.

结果表明在压缩过程中，从缸心到缸壁，切向湍流强度值大体相同。

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the experiment is successful and the result shows that high turbulence intensity is reached at the end of compression stroke in the new type combustion chamber.

结果显示：在压缩终了附近，这种新型燃烧室中的紊流场具有高的紊流强度。

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then diesel fuel oil is injected or sprayed into the cylinder at the end of the compression stroke.

然后在压缩冲程即将结束时，柴油燃料被喷射或被喷雾进入气缸。

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a diagrammatic method is employed to compute shock absorber force at compression stroke.

提出了计算压缩行程减振器阻力的图解法。

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a study of the in-cylinder flow in diesel engines during the induction and compression stroke

柴油机进气和压缩过程中气缸内流动的研究

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and that the simulation results of the compression stroke present the differences between both kinds of turbulence models.

对平顶活塞及带坑活塞压缩过程的模拟结果，显示了两种湍流模型的差异。

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a method for predicting in-cylinder gas motion during the compression stroke

预测压缩冲程期间气缸中气体运动的方法

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