variable valve 中文意思是什麼
variable valve
解釋
調節閥-
This paper supplied a new way through variable frequency variable speed ( vfvs ) to change its output flow rate and adding a constant - pressure - drop valve, which could solve the defects in hydraulic pressure servo control system, such as low efficiency in control system, short life, poor ability in resisting pollution, low efficiency in driving system and flow rate, pressure pulse. and this way was proved to be effective
本論文針對傳統伺服控制系統效率不高、元件壽命短、抗污染能力差、驅動系統效率低、存在流量及壓力脈動等缺陷，利用先進的交流變頻調速技術改變液壓泵轉速的容積調速新方法，提出了在液壓系統中加一個定差減壓閥的新思路，較好地解決了液壓伺服系統存在的上述問題。 -
Many researches have been done with the simulation model. it was found that some structure parameters such as the diameter of the driving piston, the diameter of the buffer piston, the stiffness of the valve spring, the compress ratio of the buffer piston, and the flux area of the solenoid valve etc. have great effect on the performance of the haecvvs. for certain performance demand of the variable vale system, there is a most suitable combination for the structure parameters
通過對電控可變氣門系統的主要結構參數，如動力活塞直徑、緩沖活塞直徑、氣門彈簧剛度、緩沖活塞實際壓縮比、電磁閥通流面積等參中壓共軌電控柴油機可變氣門系統的研究數對電控可變氣門系統啟、閉特性的影響規律的研究發現，動力活塞直徑、氣門彈簧剛度、電磁閥通流面積對電控可變氣門系統啟、閉性能起著決定性的作用，對於一定的氣門啟閉規律要求，這些結構參數存在一組最佳值。 -
Electromagnetic valve actuation ( eva ) is a new kind of variable valve timing technology
摘要電磁氣門驅動是一種新型的可變配氣相位技術。 -
In this paper, the operation principle of electric proportional variable - volume pump is introduced, and the property of proportional electromagnetic valve is discussed also
摘要介紹了電控比例變量泵的基本原理，討論了比例電磁鐵的特性。 -
Exhaust gas passage with variable pressure : it is adopted to prevent foul air from toilet and kitchen ; check valve is added at the joint
變壓式排風：為防止衛生間、廚房排風井內的污風反竄到室內，排風道採用了變壓式排氣道，並在封到介面處增設了止回閥。 -
Travel mechanism of each track consists of a variable two - speed piston motor, a planetary reducer and a parking brake ， travel brake buffer valve is mounted on motor to reduce hydraulic shock
每側履帶的行走機構由一個變量雙速柱塞馬達、行星減速器和制動器組成，行走制動緩沖閥與馬達一體安裝，吸收了行車時由於制動或載荷變化帶來的液壓沖擊。 -
So the sliding mode variable structure controller was discussed, which has strong robustness against the disturbance, and the chattering phenomenon inherited from vsc was taken advantage to regular valve vibration for the purpose of avoiding coagulation on it, while precision of level control can be almost unaffected. but for the reason of control limitation, especially the acceleration insufficiency, the continuous time quasi - sliding mode vsc for one class of controllable system, as the substitution of ideal sliding mode control system, which was impossible to implemented, was researched, including the three essentials, reaching condition in particular, and the chattering ex - pression was given. furthermore, the effect to quasi - sliding mode motion and chatter - ing expression by extent disturbance was also analyzed
由於控制量相對受限制，並且主要體現在控制量加速不足方面，無法實現理想的滑模變結構控制，因此本文研究了一類能控系統在這種情況下的連續系統準滑模變結構控制，包括變結構控制三要素，尤其是到達條件；並且針對塞棒掛渣問題，給出了該情況下抖振的表達式；魯棒性方面，分析了外界擾動對準滑模運動的影響，並且給出了外擾作用下抖振的表達式。 -
Vivt variable inlet - valve timing
可變進氣門正時 -
Vvt variable valve timing
可變氣門正時 -
The hydraulically actuating, electronically controlled variable valve actuator, the common rail hydraulical source and the electronic control unit have been designed and developed. the primary control strategies of the valve timing in different conditions have been discussed. the performance of the system has been researched deeply by experiments, from which, plenty of rules have been obtained, and the way to adjust valve timing, lift and duration has been put forward
研製了電控可變氣門系統的執行器? ?電控可變氣門驅動機構，設計了電控可變氣門系統的液壓驅動源? ?中壓共軌液壓源，開發了電控可變氣門系統的電子控制單元，實現了在不同工況下，氣門正時、氣門開啟持續期、氣門升程柔性的電子控制，並對不同工況下配氣正時的控制策略進行了初步探討。 -
It can be seen from the model that the two valve - controlled motors would be coupled with each other if the characteristic of variable - displacement pump is taken into account
由該模型可以看出，在考慮變數泵特性的條件下， 2個閥控馬達是相互耦合的。 -
Design of the velocity system of the valve - controlled motor on the variable rate fertilizer applicator
紅中牌生物有機肥在棉花上的應用效果 -
3d finite element analysis of a variable stiffness valve spring
變剛度氣門彈簧三維有限元計算分析 -
Apart from these, the paper also proposes several improvements for pump control, which include changeable cut off control that can prevent several kinds of relief loss of hydraulic system, cross sensing control of pump that can enlarge the variable working range and compound control that combine two kinds of valve control method together
此外，還提出了幾種泵控改進方案，其中包括可防止多種系統溢流狀態的可變壓力切斷控制、能增大泵的變量工作范圍的交叉功率傳感控制以及將兩種閥控策略結合在一起的復合控制技術。 -
Common - rail injection system is one of the best and the most hopeful fuel injection systems, and the electronically controlled variable valve system becomes important too
燃油共軌系統是公認的最有發展前途的燃油系統。配氣系統的電控化也是不容忽視的。 -
There are two important points in static simulation research work, one is static regulation range, and the other is dead - zone. in dynamic simulation research, variable parameters and optimum simulation research work for the integrated valve are made
穩態模擬主要就影響集成閥工作死區和調節范圍的參數進行了分析；動態模擬主要對集成閥進行變參模擬，考察一些參數對集成閥時域特性的影響，實現了參數優化。 -
In power decentralized system, there are not pump / fan installed in main pipe, but also in branches, using the variable speed control to regulating the flow, valve energy consumption can be reduced or avoided, but the investment is higher and control is complicated
動力分散系統不但在系統的母管上，而且在各支路上設泵（或風機） ，並實行變速控制以調節流量，可以減少乃至消除調節閥能耗，但投資增大，控制復雜。 -
Variable - valve - timing system. v. t
可變汽門正時系統 -
Firstly, the potential of optimizing the performances of the diesel engine by variable valve timing, duration, and lift has been investigated. and the haecvvs is developed
論文首先分析了配氣參數調節對發動機性能優化的潛力，然後針對135型柴油機開發了一套中壓共軌電控可變氣門系統。 -
Consequently, to optimize the engine performance in any condition and any circumstances, a need exists for a device that permits variable valve timing, variable lift and variable valve duration during engine operation. so a flexible, hydraulically actuating, electronically controlled variable valve system ( haecvvs ) for model 2135 diesel engine and the experiment bench for its performance have been deve loped
為了能夠在任意工況下對發動機的性能進行優化，作者在系統分析了國內外各種可變氣門系統的發展狀況及特點的基礎上，開發了一套中壓共軌、液壓驅動、電子控制可變氣門系統及其性能測試臺架，並對電控可變氣門系統的性能進行了研究。
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