空車轉數 的英文怎麼說
中文拼音 [kōngjūzhuǎnshǔ]
空車轉數
英文
free running revolutions-
As 4ws system is a typical system with stochastic perturbations, which are from the road surface unevenness and side wind and ca n ' t be described by deterministic function, the probability and statistics theory must be used in such research
由於汽車四輪轉向系統是典型的一個存在隨機擾動的系統,振源主要就是路面的不平度和地面的側風,這類擾動不能用確定性的時間或空間函數去描述,只能用概率統計的方法去研究。Finally, we can not use electric power but the engine of bus or subsidiary engine to drive air compressors of bus air conditions. because the change range of turnaround speed of engine is very wide, that brings difficulties in controlling the rate of flow of cold - producing medium. in the control of bus air - conditions, preventing evaporator from freezing to make the air - conditions work with high efficiency and controlling the temperature of railway carriage are the basic tasks in air - condition control
與一般的建築空調相比,汽車空調的工作環境惡劣,條件差,控制難度要增加很多,主要體現在以下幾個方面:一是車外熱負荷變化大,難以確定控制參數;二是要求空調負荷大,而且要控制空調使其降溫迅速:三,不便於用電力作為動力源,必須用汽車發動機或輔助發動機來帶動壓縮機,當採用汽車發動機作為動力源時,由於汽車的車速變化大,發動機轉速的變化可從600r min到4000r min ,壓縮機轉速與發動機轉速成正比,其轉速變化高達7倍,給空調系統製冷劑流量控制帶來困難。In the research and development of the vehicle monitoring system, we have solved how to store and manage the geospatial data. we use gml to transfer geographic information and use svg to view the geographic information, find a method of transformation from gml to svg
在車輛監控系統的研究與開發中,解決了空間地理數據的存儲和管理,應用gml進行空間地理數據的數據交換,用svg進行空間數據的瀏覽,並給出了從gml數據到svg數據的轉換方法。On the bases of carrying out idle operation, cutting and modal experiment of certain numerical controlled lathe, it is determined that weak dynamic stiffness in the spindle component of machine tool is the reason in the respect of structure for causing cutting vibration of machine tools
摘要在對某型數控車床進行空運轉、切削及模態試驗的基礎上,確定了機床主軸部件動剛度薄弱是引起機床切削的結構顫振方面的原因。Abstract : this paper gives the fe simulating analysis of the effect on road construction in the process of mine open - cut, analysis and evaluates stability of road foundation during many rock material steps excavation, concludes that the different conditions, for example, the rock caves, steps and the dis tance between the steps and road have influence on the road foundation stability
文摘:針對礦山在地下開采轉為露天開采過程中,原地采區域在露天采場臺階開挖過程中對露天采場公路建設及運營的影響,進行了數值模擬分析,並對通過各種巖體介質的露天采場公路路基在臺階開挖和汽車運營過程中的穩定性進行了分析評價,得出了在不同條件下,如空洞地區、臺階材料介質、材料界面、開挖臺階與公路距離等對路基穩定性影響的評價。Fc approved a commitment of 70 million for providing a one - off grant to assist owners of pre - euro diesel heavy vehicles i. e. those diesel heavy vehicles registered before april 1995 of long idling operational mode to retrofit their vehicles with emission reduction devices
財務委員會批準開立為數7 , 000萬元的承擔額,以便提供一次過撥款,協助車主為引擎須長時間空轉的歐盟前期重型柴油車輛即1995年4月前登記的重型柴油車輛安裝減少排放物裝置。Fc approved a commitment of $ 70 million for providing a one - off grant to assist owners of pre - euro diesel heavy vehicles ( i. e. those diesel heavy vehicles registered before april 1995 ) of long idling operational mode to retrofit their vehicles with emission reduction devices
財務委員會批準開立為數7 , 000萬元的承擔額,以便提供一次過撥款,協助車主為引擎須長時間空轉的歐盟前期重型柴油車輛(即1995年4月前登記的重型柴油車輛)安裝減少排放物裝置。The kinematic performance of the macpherson suspension on a real vehicle is studied, and the changes of the front wheel alignment and the motion of the front wheel in the longitudinal and the transversal directions are figured. based on the requirements of general layout, a constrained optimization design model is set up with the steering cross rod ball joint position as the optimization variables ( design parameters ), and the sum of steering cross rod length interference while the left front wheel turning and bouncing as the objective function. and the optimization results are worked out by programming on computer
針對一種實際車型上的麥弗遜式懸架,計算分析了轉向輪跳動時前輪定位角和車輪橫向、縱向滑移量的變化情況,並根據實際車型上麥弗遜式懸架的空間布置要求,建立了以轉向橫拉桿斷開點空間位置坐標為優化變量,轉向橫拉桿斷開點空間布置坐標可變化范圍為約束條件,車輪轉向和跳動時轉向橫拉桿長度干涉量為目標函數的約束優化設計模型。Because of its characteristics of simple structure, low cost and space economy, macpherson suspension has become the most popular independent suspension since its emergence. hence, the kinematic analysis of macpherson suspension has great significance. in this paper, the dimensional positions of points on the left macpherson suspension while the front left wheel turns and jumps are calculated with the method of dimensional coordinate transformation
本文通過研究用於轉向車輪的麥弗遜式懸架的結構特點和運動特性,採用空間坐標變換方法,準確計算出前轉向車輪在轉向和跳動情況時麥弗遜式懸架上點的空間位置,建立了轉向車輪麥弗遜式懸架在車輪轉向和跳動時的物理模型和數學模型。The information includes four types : six analog signals, such as oil quantity, voltage, oil pressure, water temperature, inside and outside temperature ; switching signals, such as the door, window, etc. ; impulse signals, such as car speed, and the rotate speed of engine
研究了汽車在行駛過程中各狀態參量的數據採集。主要包括四類:油量、油壓、電壓、水溫、車內溫度和車外溫度等6路模擬量,全部車燈的故障檢測量,車門、車燈、空調開關等車上常用開關量,車速、發動機轉速等。Second, engine ' s partial velocity characteristics model and universal characteristics model are built the throttle opening is considered as an essential factor to build the model for reflecting the actual working performance of engine. the situation of the throttle opening change is studied, and a simulation method is given to use torque curved surface and vehicle dynamics equation on base of differential approach method. engine test software is developed for the engine no - load test, variable throttle opening test and throttle step change test
其次,建立了發動機的部分速度特性模型和萬有特性模型;為了更好的反映發動機的實際工作特性,將油門開度作為一個重要參數參與建模,並對發動機變油門的情況進行了研究;結合轉矩曲面和整車動力學方程,採用微區間逼近法確定了發動機變油門過程模擬方法;開發了發動機試驗測控軟體,利用該軟體進行了發動機空載響應試驗、發動機不同油門開度試驗和油門階躍變化試驗,並對實際試驗數據和數學模型計算數據進行對比;在vc + +平臺上開發了發動機特性模擬模塊,在系統中用軟體實現了變油門控制發動機特性的功能。This controlling way can make the passengers feel much comfortable and make the bus air - conditions work with a high efficiency. in this thesis, a single - chip microcomputer fuzzy controlling system with mcu : at89c51 is designed to deal with the bus whole air - condition composed with refrigerating system and heating system. via controlling the open of temperature door, turnaround speed of evaporator fan and subsidiary engine, it can control temperature of railway carriage
本論文針對獨立式全空調型(完全合一型)客車空調系統,設計了一個以at89c51為核心的採用模糊控制演算法的嵌入式單片機控制系統,通過控制溫度門的開口角度、蒸發器風扇的轉速、輔助發動機的轉速來控制車廂內的溫度,通過壓縮機的開、停對蒸發器除霜,系統具有溫度顯示、用戶設定的分擋多級溫度控制、在線控制參數修改等功能。分享友人