作者: KANG (3K) 看板: Oil
標題: Re: bye bye,sbk~
時間: 東吳機研站 Sat Apr 19 11:20:40 2003
※ 引述《lampada (Shell-Pennzoil-Agip)》之銘言：
: ※ 引述《KANG (3K)》之銘言：
: << 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
您指的是台灣shell??
中殼不是一直在做嗎???
: << 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
難得有此有心人...資料齊全與否..就看你們這些年輕人發揮了....
加油~~
: << 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..
嗯...對應你的前文..提供之潤滑油vi資料...
還有一個key point
我想告知的是....vi是一個區間變化值...
耐用指標..不是在VI
嗯嗯~~~有機會慢慢聊...
酯類低溫的流動性普遍不好...
所以VI拉不上來....
只能說到這.....
您對品牌研究透徹...
想問問..所謂之系列...是指何方面???
: << 我沒意見...油品百百款...只有個別去看
^^....
單純研究VI值會走到另一種迷惑....
我想專攻機車潤滑油的人...
CARE的東西...應該是VI外的東西...
VI我認為在市售汽車車主來參考..是個好指標....
: : 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??
: ----------------------------------------------------------------------------
: 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.
: -----------------------------------------------------------------
非常感謝...
原來是ASTM..
: << 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...
這可難倒我了....
人家願不願意割愛都沒個譜...:p
可能真的要等...^^
我本來也一直在VI數字上打轉..直到最近方參透VI高低之影響...
還有VI數據中真正的重點..與機車車主對耐操之於工業用語言的定義....
這個KEY我已經抓到了....
祝福我吧...也祝福SHELL...
�
--
※From: 東吳機研 scumotor.com.tw KANG From NK218-187-34-119.3-21.pl ...
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/