Re: 切線大小事~ | 東吳機研站數位典藏

作者: animal (animal) 站內: Electrical 標題: Re: 切線大小事~ 時間: Fri Mar 9 14:46:12 2007 我想我直接把全文翻譯上來好了 Headlight aiming The three aiming dimensions Headlamps need to be aimed horisontally and vertically. If you are retrofitting headlight optics from a different car you also have to deal with rotational aiming. 三維空間的瞄準頭燈需要需要經過垂直與水平的照射調整。如果你準備改裝另外一台車的頭燈，你也必須考慮到旋轉方向的照射 What is the reference lines/points for aiming? The lowest cuttoff line should always be used for aiming. This would be the left part of cutoff line (unless u are in UK). The right side of it cannot be used as a reference, hight will vary depending on manufacturer and model. 什麼是照射的參考線/點？最低的切線通常就是用來當作瞄準的參考。通常是切線的左半邊（除非你在英國等右駕國家）。右半邊的切線不能拿來當作參考，切線高度的變化是依據製造商與燈具形式而有所不同。 Initial vertical aiming Because of the amounts of vehicles nowadays, its easier to find a similar vehicle bumper to aim on than a white wall. As an initial vertical aiming set cutoff line to the upper half of the bumper. Harmonized and ECE beam cutoff lines from the 2 headlamps are not supposed to form a two step pattern. They are supposed to be two identical steps at the same height above ground: 初始垂直校正因為現在車輛數目繁多，因此相對於找個白牆作瞄準，利用同類型的汽車保險桿作為瞄準點似乎還比較容易些。當把初始的垂直切線設定在保險桿的上半部。經過調整的頭燈切線不應該是一個類似於兩層階梯的形式。相對於地面上的高度是要相同的。 [參考圖片 : 兩層階梯式 http://faqlight.carpassion.info/aiming-bad-stagger.gif] [參考圖片 : 正確的垂直初始照射形式 http://faqlight.carpassion.info/aiming-ece-harmonized.gif] Final vertical aiming Alt A) This can only be performed on a perfectly even surface. Measure the distance from ground to the headlight centers, and aim the flat part of the beam cutoff at 25' distance (against a vertical wall) to be 2.1 inches below the headlight center height. Cover one light with something while you're aiming the other light, and repeat for the 2nd light. 最終垂直調整 A）這只能在一個相當平坦的地方操作。先測量地面到頭燈中心的高度，並且在照射平面同高度上畫上一條線。接著距離照射平面25英呎處，調整頭燈切線高度至水平高度以下2.1英吋的地方。當調整時將另外一邊的頭燈遮住。 Alt B) Performing a totally accurate vertical alignment at 25' distance is more of a theorethical hight alignment. It requires a totally levelled ground. Try to do that in a parking lot or in front of your garage is next to impossible. There are always bumps and irregularities that will become inaccurate factors. B）要在這25英呎內進行準確的垂直調整，對於理論的高度調整是幫倒忙。因為這需要的是一個完全水平的平面。想要在停車場或是家中的車庫前面是幾乎辦不到的。那邊總是有些東西會是造成不準確的因素。 A better approach for final DIY vertical aimig is to go for a ride. Note where cutoff line hits on average at a distance over a 20 minutes period. I say average here, bacause it will jump up and down alot. The average should definatly not go upwards. If it never peaks on any houses/walls or if they glare into your eyes from the road, they are too low. If it peaks up on second or third floor of a condo building, they are too high. Average should be hitting the ground around 80-90meters in front of you. 另外一種更適合DIY的最終調整就是開著車上路。記下約20分鐘行駛路程中，切線的平均照射距離。這邊說的是平均值，因為會有開車總是會上上下下的。平均值應該是要在定義在不會向上的標準下。如果光線從未照射到房子或是牆壁上，或者照射路面而反射到你的眼睛上，則頭燈角度太低。如果有照射到公寓的2或3樓，那麼頭燈角度就太高。平均上應該是要打在你的前方約80-90公尺的路面上。 [參考圖片 : 調整照射過的切線高度位置 http://faqlight.carpassion.info/aiming-ece-harmonized-down-the-road.gif] Right side of beam will actually go slightly upwards from headlamps. This may sound totally backwards, but it is not. 右半邊的照射光束將會稍微的從頭頭的向上延伸出去。聽起來將是全部向後照射，但並不是如此。 Initial horisontal aiming Start a few feet away from a white wall (or from the bumper mentioned above). Drive slowly directly backwords 25feet and forward in a straight line and notice if any of the beams "wanders" sideways while vehicle moves. (It is probably advantagous to have a passenger looking at the beam and driver looks backwards. You don't want to wreck ur ride, right?) If beam does "wander", do neccesary horisontal adjustment. Repeat this process until beam is steady while vehicle moves back and forth in a straight line. 從距離一面白牆幾呎的地方開始（或者從前面提到的保險桿也可以）。緩慢在一條直線上前後行駛25英尺的距離，並且在車子移動時注意到光束邊邊的漂移（若是可能的話找個乘客在你倒車的時候幫你看看光束，你可不想發生意外，是吧？）。如果光束有飄移，做些必要的水平調整。一直重複到不論向前或向後，光束都是打在你正前方的直線上。 Final horisontal aiming - especially ECE and harmonized beam patterns: At a distance, left and right side headlamp pattern will merge. On a long stretch, place horisontal reference point (left kick) between yellow line and your right road shoulder line. This pattern is more visible from the drivers seat when going down a hill reaching an uphill. Beam reach will be lower and contrast between light and road surface will be bigger. The intension with the high right flare is that driver will see alot more of the two and four legged creatures on right road shoulder compared to a totally straigth cutoff line. Its kinda hard to imagine, think it over while you drive at nite for a few days and u will see the light. 最終水平校正 - 調整過後的光型在某個距離內，左右兩邊的頭燈將會重疊。在一個長距離的路上，於黃線跟你右邊路肩的中間，設定水平參考點（左駕）。當車從山坡上開下正要上坡時，這樣的光型將更容易提供從坐在座位上的駕駛人更大的可視範圍。光線會打在稍低一點的地方，並使得光線與路面之間的對比更大。筆起完全水平的切線，這稍微高出的光線將使得駕駛人可以多看見位於右邊路肩兩條腿或四條腿的物體。這很難用口語去描繪，不過當你在夜間開過幾天後，應該就看得出來了。 What is current aiming standards say? The U.S. vertical aiming standard is 2.1" of drop at 25ft, or 8.4" per 100ft. This actually mean that a taller vehicle (truck) with high mounted headlamps will have alot more reach than a compact car. ECE aiming standards have slightly less drop. 現今的照射標準是怎麼說的？美國的垂直標準是每25英尺降低2.1英吋，或者是每100英呎降8.4英吋。事實上這意味著那些有著較高頭燈位置的車輛（卡車）將會有比一般的車子較大的照射範圍。歐洲的投射斜率標準比美國的稍高一些。（意即打的更低） Is projector based headlamps aimed different than reflector based? No, same aiming procudures applies to all headlights. However, if u are interested in tweaking, you might be able to aim a projector a degree or two higher due to sharper cutoff. 投射式燈具與反射式燈具的照射標準不同嗎？不，照射標準不因燈具形式而不同。然而若是對於調整有興趣，由於有銳利的切線，可以試著將投射式燈具向上向上調整1~2度。 Why is projectors more picky to aim? Projector units has sharper cutoff reflector units. With the sharper cutoff, comes also need for aiming withing smaller tolerances. If you have projector units that came with your car, rotation adjustment is done at the factory. For those of us who plan or have retrofitted a projector unit into a different car, already know or will run into this. With reflectors you might not notice much if rotate them 4 degrees. 4 degrees seems awfully little. But here is a beam presentation of a projector unit that has been rotated 4 degrees. You immedatly see there is something awkward, and over time you will annoy yourself to death. Light will be totally missing in a sector on the right flange. This is were you normally will se playing kids on the side of the road. 為什麼投射式燈具在照射調整上更要挑剔？投射燈具比反射燈具的切線銳利。由於這銳利的切線，所以在調整上只能容許更小的差距。當你的車子本身就具備投射燈具，旋轉調整的工作在車廠內就完成。對於那些計畫將投射燈具改裝到其他車子上的人，必須知道或者是注意以下的事項。由於反射燈具的關係，會不容易發現旋轉角度誤差大於4度。4度看起來似乎很小。但是投射燈具的整個光型表現也會跟著旋轉4度。你會立即發現這種尷尬現象，並且一直干擾你。光線將會在右邊一小段的凸緣後完全消失。正常來說你該要看見在右邊路旁玩耍的小孩。 [參考圖片 : 旋轉過後的光型 http://faqlight.carpassion.info/rotated-projector-beam.jpg] 呼打了這一長串簡單的說就是... 要正，要直，角度要夠低！ [累死了] -- ╭┼ Origin: 玩車人的天地 ˙東吳機研站 scumotor.com.tw ┼╯ Author: animal 從 soc1181.cwb.gov.tw 發表 ╰╮ Modify: 07/03/09 14:49:15 → Booting 推：這篇很辛苦照翻的XD 07/03/09 → animal 推：我已經想辦法弄成口語化 = = 07/03/09 → YenXD 推：那看來我G4打前方10-15M完全不符合標準阿....XDD 07/03/09 → animal 推：摩托車的龍頭高度不可能用這種斜率照射! 07/03/09 → YenXD 推：不知道台灣汽車照射標準是什麼? 樓上幫神 07/03/09 → animal 推：很懶我記得我們的驗光機就是用這標準 07/03/09 → hahaman7536 推：難怪打鳥燈才驗的過....XD 07/03/09 → assasser 推：機車的高度和遠度就參考休旅車/貨車/箱型車...的車 07/03/09 → assasser 推：因為實際上還蠻多汽車魚眼比龍頭還高很多的(EX:X5) 07/03/09 → YenXD 推：怎辦? 要用這理由讓自己變成打鳥燈嗎XD 07/03/09 → animal 推：等等發一篇要怎麼設定斜率 07/03/09