作者: lampada (Shell-Pennzoil-Agip) 看板: Oil
標題: Re: bye bye,sbk~
時間: 東吳機研站 Sat Apr 19 10:13:08 2003
※ 引述《KANG (3K)》之銘言：
: 多多指教..既然擁有shell方面龐大的資源..我想各方面資料的取得..
: 還要仰賴兄台的幫忙...
: 以我所知..目前台灣shell並不強勢..
: shell在亞洲的重點不在台灣...
: 所以目前可以拿到的實驗數據..有一部份要從香港或新加坡來..
: 有機會多多提供..
<< 的確不在台灣....不過殼牌倒是跟中油有合作成立一家"中殼"
<< 不過六月後會再出發...規劃中
<< 資料我是透過網路..或需要時就直接寫信問(殼牌的國外網路服務中心..)
<< 某些書籍..以及經銷的資深人員
<< 你認識的殼牌資深工作人員應該已經有很好的管道了啦...別謙虛
: : << 而xW如同定義的...是凝點...而以同一家油同一系列而言
: : << 其xW40的油..在0w..5w..10w上降低凝點的同時多少是增加了低溫的流動性
: : << 因此其40度的黏度通常會降低....
: : << 而以台灣而言10w以經夠了....
: : << 如果是我的話...會想選用0w40並非是它的凝點低...而是相較10w40
: : << 在40度的黏度降低....原因在於熱油較快..啟動阻力低...
: : << "通常"VI也高...""價格'"也較高...
: 如果我眼睛沒看錯..
: 上述所提供之motul 0w-40與10w-40的vi跨距..
: 似乎是10w-40較為出色...
: 對應到您目前所言...好像是矛盾的..
<< 這兩支油是Motul不同系列的油....
<< 我的意思在"一般""通常"的情況下....
: 請教您對這方面的看法...
: 當然我心中早有我個人歸納的答案...
: 不過我還是想求教道行高深人士的高見...
<< 我沒意見...油品百百款...只有個別去看
: 另者您所提到的hths值..(不知是否看錯..不管了)
: 可否先告知..其應用的環境是何種高溫與高壓??
: 用的是哪一顆制式的發動機或引擎??
: 主要測量的數據為何指標??
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我在網路上花10塊美金買的Motor Oil Bible裡頭的資料如下
High-Temperature/High-Shear (ASTM D-4683)
This test is a simulation of the shearing effects that would occur within an
engine. In fact, it's actually designed to simulate motor oil viscosity in
operating crankshaft bearings. The D-4683 is measured by the Tapered Bearing
Simulator and simulates motor oil stress at temperature extremes.
You might recall that multi-viscosity petroleum oils tend to use long chain
polymers to "beef" themselves up. Under high stress conditions where shearing
can occur, these polymers break down. As they do, the viscosity of the oil
decreases. This is what the High Temperature/High Shear test checks for.
The HT/HS test is measured in Centipoise (cP) as the Cold Crank Simulator test
is. However, in this case, because you're hoping for the least loss of
viscosity with an increase in heat and stress, you want the cP value to
remain high(at least relative to the minimum set by the SAE J300 standards.
Each SAE multi-viscosity grade has a specific lower limit for the HT/HS cP
value. If a multi-viscosity oil cannot achieve a cP value above that limit,
it cannot be classified under that viscosity grade. For instance, according
to the SAE J30 specifications, an oil must achieve an HT/HS cP value of 3.7
or higher in order to be classified at the 15w40 viscosity grade.
So, whether this data appears on a manufacturer's tech spec sheets or not,
the company has the data. They have to in order to classify an oil as a
certain multi-viscosity grade. Of course, this does not apply to monograde
oils althoug some companies run this test on those oils as well.
至於測試標準ASTM D-4683....詳細內容還要查一下..
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: 在下也認識一位資深的shell工作人員..
: 可以提供當年傳說中的漢堡廠(已炸毀)
: 出的vi220的基礎油做藍本的非市售品...
: 這東西得來不易...
: 有興趣可與新加波所出的做一比較..
: 我打算以此油基..推出3k油最終極的油品...
: 我想在玩油生涯中先以這款..做為一個句點..
: 我可能以限量的方式來做..畢竟量實在太少了...
: 畢竟玩cp值的朋友..
: 跟玩hi end的朋友都一定有一罐追逐的目標..
: 我會以這支做為我最後的ace..
: 也算是我對xhvi最大的敬意
: 要玩最好的xhvi..可能是我目前最終極的目標..
<< 市面我看過Vi超過200的...
<< SpeedMaster Pro Racing Special 5w50 VI=209
<< Agip EuroSport 5w50 VI=206
<< 等你了...佩服...此基礎油的相關數據也有嗎...
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※From: 東吳機研 scumotor.com.tw lampada From 140.115.215.19 ...
一個玩車人的天地/各車系專屬區/GP SBK TIS賽事討論區/進口車討論區/