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全部话题 - 话题: octane
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q***q
发帖数: 402
1
加油站的regular, plus, premium是指octane rating还是指加了多少%的ethanol?是
不是octane越高说明掺兑的ethanol就越少,MPG就越高?学化学化工的童鞋们来答疑一
下。
q***q
发帖数: 402
2
好像说octane越高,ethanol越多,纯ethanol的octane是115. 越是高标号,热能越低
,MPG也越低。纯汽油不含ethanol热能最高,可惜现在基本上已经买不到了。
h*******n
发帖数: 1328
3
octane 辛烷
ethanol 乙醇
风马牛不相及
j*******4
发帖数: 306
R*I
发帖数: 1840
5
除了感觉Callaway Diablo Octane Driver头大一点
p**s
发帖数: 788
6
来自主题: Unix版 - hard disk for Octane
I'm going to buy a hard disk (40GB) for an Octane. I was quoted $750 for a
SEAGATE 36.7GB U320 10K 68p. too much?
Any website to get a deal?
w*******y
发帖数: 60932
7
Newegg is selling a 128gb OCZ Octane SSD and a free 4gb Rally2 usb for $149.
99 - $22.50 ( 15% promo code) - $20 rebate = 107.49 + Free Shipping
Item: Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227776
Promo code: HARDOCPX222F
t*********2
发帖数: 43
8
额...好吧...手册里这么写的,我就默认数字越高越好了...
2AZ−FE engine: Select Octane Rating 87 (Research Octane Number 91) or
higher.
1MZ−FE and 3MZ−FE engines: Select Octane Rating 87 (Research
Octane Number 91) or higher. For improved ve- hicle performance, the use of
premium unleaded gasoline with an Octane Rat- ing of 91 (Research Octane
Number of 96) or higher is recommended.
i****x
发帖数: 17565
9
来自主题: Automobile版 - 偶尔加高标号油利弊
有道理就讲出来,吐一句显得自己的能耐然后又把剩下的咽回去太没意思。
我是不懂电子控制,不过基本原理是错不了的,下面是wiki上的介绍,你可以看看我说
的对不对。
Many high-performance engines are designed to operate with a high maximum
compression, and thus demand fuels of higher octane. A common misconception
is that power output or fuel efficiency can be improved by burning fuel of
higher octane than that specified by the engine manufacturer. The power
output of an engine depends in part on the energy density of the fuel being
burnt. Fuels of different octane ratings may h... 阅读全帖
k**o
发帖数: 15334
10
那是octane level:
Octane Levels
The most common levels of octane grade are 87 (regular), 89 (mid-grade) and
91-93 (premium). The octane number of the gasolines offered for sale are set
by gasoline refiners and marketers based on their perception of the
technical and competitive needs in the market. Federal and most state
regulations do not regulate minimum octane values, only that the postings on
the dispensers accurately reflect the octane number of the gasolines being
sold.
Additives
Each major ... 阅读全帖
y*****a
发帖数: 580
11
来自主题: Military版 - fuck! EPA allows 15% ethanol in gasoline
this is talking about the same fuel, that at similar heat content.
Heat is release from the fuel, and then heating the gas mixture to a higher
temperature. If we are using ideal gas as an example (a very much
simplification that has gross error), the higher the gas temperature, the
smaller volume it can reach in a linear way (the end pressure is controlled
by outlet pressure) PV=nRT. As a result, the better 压缩比.
All gasolines are having similar heat content per gallon although positively
corre... 阅读全帖
f**********n
发帖数: 3081
12
来自主题: Automobile版 - What does the pcv valve and egr valve do?
PCV, stands for positive crankcase ventilation. Since the piston rings
cannot stop every bit of combustion gases from escaping past them into the
crankcase(oil pan) area, there needs to be some way to safely vent that
pressure, so that it wont build up and blow the seals out of the engine. The
PCV valve does this, by applying a controlled amount of vacuum to give the
combustion gases a way out and keep them from building up.
EGR stands for exaust gas recirculation. The EGR valve opens at the
app... 阅读全帖
Y***r
发帖数: 15270
13
来自主题: LosAngeles版 - 牛b, costco的油out of stock了
"Just got out of Irvine, CALIFORNIA Costco off Technology and they ran out
of 87 octane gas so they've put the 91 octane at 87 octane price. I think it
was $3.2x for the 91 octane.
AGAIN, IRVINE, CALIFORNIA COSTCO ONLY OFF OF TECHNOLOGY DRIVE.
This will probably last until they re-fill the 87 octane tanks."
l******o
发帖数: 1550
14
来自主题: Racing版 - 汽油标号的秘密(转载)
是因为计算标准不一样的,作者自己在忽悠人
from wiki
The most common type of octane rating worldwide is the Research Octane
Number (RON). RON is determined by running the fuel through a specific test
engine with a variable compression ratio under controlled conditions, and
comparing these results with those for mixtures of isooctane and n-heptane.
There is another type of octane rating, called Motor Octane Number (MON) or
the aviation lean octane rating, which is a better measure of how the fuel
behaves when under lo
j******a
发帖数: 1599
15
来自主题: Travel版 - 近期去Jackson Hole 的帮帮忙吧
I found this one online, may be of help
"Octane ratings can vary greatly from region to region. For example, the
minimum octane rating available in much of the United States is 87 AKI and
the highest is 93. In the Rocky Mountain (high altitude) states, 85 octane
is the minimum octane and 91 is the maximum octane available in fuel. The
reason for this is that in higher-altitude areas, a typical combustion
engine draws in less air per cycle due to the reduced density of the
atmosphere. This direct
y*****a
发帖数: 580
16
来自主题: Military版 - fuck! EPA allows 15% ethanol in gasoline
higher octane rating is because of ethanol. A higher octane rating means
that it burns perhaps more complete, for example, less carbon deposit in the
piston. However, the efficiency of the piston is unchanged (which is
controlled by the heating temperature). The MPG is controlled by the engine
efficiency (constant for a particular engine) and fuel heat content. It
has nothing to do with the octane rating.
If just gasoline itself, it happens that the higher octane rating, the
higher heat cont... 阅读全帖
d****n
发帖数: 12461
17
来自主题: Automobile版 - 大家不要总想着加最便宜的87号油
那你的车设计就是给87号用的呗。
例如我的说明书上是这么写的:
“Unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-
Knock Index) number (Research octane number 96)
If unleaded premium gasoline is not available, unleaded regular gasoline
with an octane rating of at least 87 AKI (Research octane number 91) can be
used.
However, for maximum vehicle performance, the use of unleaded premium
gasoline is recommended.”
说明应该加91号以上的油,但是加87号的也可以。
m******n
发帖数: 6327
18
☆─────────────────────────────────────☆
bearJhonson (八棵七七葚) 于 (Sun Jan 23 14:20:21 2011, 美东) 提到:
misleading
RTFM

从87号到89, 到93号, 往往是每一级加1毛钱
很多人从来只加最便宜的87号油,这未必是最合算的
首先大多数车用好油 mpg 高一些,具体多少,可以看网上讨论
大家关心的其实不是 mile per gallon , 其实是 mile per dollar!
你要算一算可能发现加 87和加 93号油的 mile per dollar 一样
如果 mile per dollar 一样, 为何不加好油呢? 对发动机有很大好处
这个一般来说油价越高越应该加好油, 因为不同油的价差绝对值是固定的,也就是油
价越高, 相对差别越小,这样加好油就越合算
☆─────────────────────────────────────☆
grasshopper (大肚子哥哥 (singing crickets)) 于 (Sun Jan 23 14:23:35... 阅读全帖
s**********o
发帖数: 14359
19
来自主题: SanDiego版 - costco加油的同学
看来你确实不懂
Many sport sedans and other sporty vehicles recommend or require premium to
obtain the hp ratings they have, not to mention the compression ratios, etc.
However, since they've been tuned/programmed that way, feeding them
something other than higher octane fuels will lead to the computer dialing
back the timing to adjust for the increase knock that the lower octanes will
make on these type of motors. Certainly, the computer can adjust somewhat
depending on what the knock sensor feeds back... 阅读全帖
D**0
发帖数: 2048
20
☆─────────────────────────────────────☆
julia2011 (julia) 于 (Mon Dec 30 14:38:36 2013, 美东) 提到:
每个星期一早上(有时甚至在星期天傍晚), Chadborne/Hopkins/MSJ 很多住家的垃
圾桶都会被几个中国老人(男女都有), 翻来翻去。 作为华人, 感到羞愧无比。 第
一, 侵犯别人的隐私; 第二, 垃圾桶这么臭, 为了几个可能的空瓶子, 值得吗?
请你们这些为人子女的, 可否让他们不要这么做? 实在受不了。 因为他们是拿着塑
料袋走路来的, 所以一定是住在附近。 住在Mission school District, 至于为了几
个空瓶子去翻别人家的垃圾桶吗? 请你们为华人保留一点尊严和脸面吧。 忍了很久了
, 今天一早又看到了。实在是不吐不快。
☆─────────────────────────────────────☆
medmallawyer (Medical Malpractice Lawyer) 于 (Mon Dec 30 14:50:58 2013, 美... 阅读全帖
d******0
发帖数: 22800
21
来自主题: Running版 - 求推荐跑trail的水带包
http://shop.camelbak.com/octane-xct/d/1047
原来叫OCTANE XCT 3L Ultra Minimal Hydration Pack for running,Perfect for
minimalist trail running or riding.。 哈哈哈。。我都不知道这个全名。
看看amazon上的评价
http://www.amazon.com/Camelbak-Octane-XCT-Hydration-Pack/dp/B00
在看看背上的效果
http://university.tri-sports.com/2011/01/25/camelbak-2011-octan
我买之前也做了些research的。呵呵。。
t******n
发帖数: 2939
22
☆─────────────────────────────────────☆
lxfpku (烟) 于 (Mon Jun 8 16:32:50 2015, 美东) 提到:
发信人: lxfpku (烟), 信区: Working
标 题: 上班族里的中国人-----被中国人逼死,被印度人踩死
发信站: BBS 未名空间站 (Mon Jun 8 16:15:19 2015, 美东)
工作中的中国人和印度人----被中国人逼死,被印度人踩死
在工作版上,看到很多讨论中国人和印度人的。我的经历也算是典型,给大家做前车之
鉴,希望中国人能够互相挺中国人,而不是像我经历的一样,疯狂逼,疯狂踩。
我所在的公司,主要的族群是四种人,俄国人,犹太人,中国人,印度人。其中,美国
的印度人占了美国总部人员的20%,中国人占了美国总部人员的25%。印度本国的印度人
(远程服务和开发)占了总体的70%。
我先讲讲和中国女老板的相处。
环境:
我和她在同一个组,共同隶属于一个白人胖子老板,白胖子手下三个组,都是唐人街出
身的ABC出任组长,一个组管一摊子相似的事情。这个部门技术性强,一半是中国... 阅读全帖
t**t
发帖数: 27760
23
来自主题: Hardware版 - SSD固态硬盘返修率排名
Hardware.fr网站每隔半年就会做一次DIY配件的返修率调查,日前2013年度上半年的结
果统计出来了,这一次又有哪些厂商中招呢。
SSD固态硬盘返修率排名
每次看到SSD返修率的排名总会觉得某个牌子会中枪,果不其然。
厂商排名:
- Samsung 0.05% (contre 0.48%)
- Plextor 0.16% (N/A)
- Intel 0.37% (contre 0.45%)
- Crucial 1.12% (contre 1.11%)
- Corsair 1.61% (contre 1.05%)
- OCZ 6.64% (上次5.02%) /不算Petrol/Ocrabe型号是2.92%,上次是3.05%)
具体型号排名:
- 52.07% OCZ Octane SATA 2 128GB
- 45.26% OCZ Petrol 128GB
- 44.76% OCZ Octane SATA 2 64GB
- 40.57% OCZ Petrol 64GB
- 10.23% OCZ Agility 4 256GB
- 8.70% OCZ Octane SATA 3 2... 阅读全帖
i****x
发帖数: 17565
24
来自主题: _Auto_Fans版 - 小排量NA的低转真是没法忍
我NB一直加regular,没有感觉任何pinging和knocking。miata压缩比不高,低号油肯
定没问题。很多车都“建议”premium,反正往高里建议车厂不会有责任。lexus es350
就建议premium,明明就是个camry v6。。一直加regular也毫无问题。但有的车比如
s2000,加油盖后面明确写了premium gas only,加regular会亮灯的。brz/frs也要求
premium。
miata.net
What type of gasoline should I use in my Miata?
See your owners manual. In general, 87 octane unleaded fuel is fine. If you
have altered your engine timing from factory specifications or made other
performance enhancements, you may notice pinging and benefit from a higher
oc... 阅读全帖
s**b
发帖数: 169
25
来自主题: Military版 - 汽油标号的趣闻
【 以下文字转载自 Automobile 讨论区 】
发信人: felixcat (felixcat), 信区: Automobile
标 题: 汽油标号的趣闻
发信站: BBS 未名空间站 (Thu Oct 11 14:57:59 2007)
时不时看到有关octane rating的讨论。实际上现在87,89, 93标号的汽油能在民用市
场里出现,还是得利于二战时对技术的需求。
在1930年代的时候,汽车用的汽油的Octane rating一般只有40,那时候飞机用的航空
发动机用的汽油(那时候只有活塞式发动机,不像现在的喷气发动机用的是航空煤油)
,Octane也才有70多80那样子。按照当时的技术,标号越高的汽油要从更加纯的原油那
里提取。
那时候的战斗机在作战的时候,对发动机的功率需求很高。遇到敌人的时候有两个选择
:要么是打成一片,要不就是一个字——逃。打的话,那个年代还很少有机载雷达,也
没有导弹之类,所以双方开打便是近身格斗。你动力跟不上,身手就不敏捷,几下子就
被人家打下来了。逃的话,这是个拼速度的游戏,发动机推重比(功率/重量)越好就
越占便宜。
所以大家都各自想
j*****n
发帖数: 1781
26
来自主题: Automobile版 - [合集] 汽油标号的趣闻
☆─────────────────────────────────────☆
felixcat (felixcat) 于 (Thu Oct 11 14:57:59 2007) 提到:
时不时看到有关octane rating的讨论。实际上现在87,89, 93标号的汽油能在民用市
场里出现,还是得利于二战时对技术的需求。
在1930年代的时候,汽车用的汽油的Octane rating一般只有40,那时候飞机用的航空
发动机用的汽油(那时候只有活塞式发动机,不像现在的喷气发动机用的是航空煤油)
,Octane也才有70多80那样子。按照当时的技术,标号越高的汽油要从更加纯的原油那
里提取。
那时候的战斗机在作战的时候,对发动机的功率需求很高。遇到敌人的时候有两个选择
:要么是打成一片,要不就是一个字——逃。打的话,那个年代还很少有机载雷达,也
没有导弹之类,所以双方开打便是近身格斗。你动力跟不上,身手就不敏捷,几下子就
被人家打下来了。逃的话,这是个拼速度的游戏,发动机推重比(功率/重量)越好就
越占便宜。
所以大家都各自想把发动机搞好。德国那时候主要靠从罗马里亚那里进口高质
m****7
发帖数: 208
27
来自主题: Automobile版 - 87和91号汽油
有一些車自己可以調節過來. 但如果Manual 寫91號是required (NOT recommended)的
話, 那你最好用91. 否則車會有積炭和爆震(knock)的情況, 這可以是永久情damage.
87octane, 跟91octane 都是指不同的octane含量. octane 的化學結構比較穩定, 燃點
較高, 可以承受高溫高壓. 所以高壓縮比的引擎通常都要91 octane, 否則氣油會因為
高溫而提早自燃, 這就是knock 的情況.
H*V
发帖数: 2770
28
来自主题: Automobile版 - 车发动机的问题, 请给建议
所以我一直搞不明白是轮胎还是发动机,因为是刚换轮胎不久,所以怀疑轮胎更多一些
,先是换了4个Michelin的轮胎,应该是225/65R-16, discounttire当时没有适合的轮
胎,非建议我用235-60R-16,用instant $70 收买了我,从那时起就感觉声音比以前大
,找老刘(刘国良,Houston)试车,说轮胎
不合适,接地面是平的不是鼓的。开了3000迈,还是去discounttire换了Yo牌的合尺寸
的。原以为新轮胎声音就响,开开就会好。最近声音越来越响,和开拖拉机一样。
update:
1.刚刚加了93号(costco),和costco买的清理油嘴的添加剂,因为油箱还剩1/4,不指望
有明显改善,实际上也没有改善
2.Fuel recommendation (Manual): unleaded premium gasoline with an Octane
rating of at least 91 AKI (anti-knock index) number (research octane #96).
If unleaded premium gas is... 阅读全帖
D**C
发帖数: 331
29
Burning fuel with a lower octane rating than that for which the engine is
designed often results in a reduction of power output and efficiency. Many
modern engines are equipped with a knock sensor (a small piezoelectric
microphone), which sends a signal to the engine control unit, which in turn
retards the ignition timing when detonation is detected. Retarding the
ignition timing reduces the tendency of the fuel-air mixture to detonate,
but also reduces power output and fuel efficiency.
So only ... 阅读全帖
l*****g
发帖数: 556
30
来自主题: Automobile版 - 给车加什么油?
Barely.
My PhD training are fading a lot as well. It almost reduce to one point:
always read / judge by your own.
here is wikipedia link:
http://en.wikipedia.org/wiki/Gasoline
"A high octane rated fuel, such as liquefied petroleum gas (LPG), has a
lower energy content than lower octane rated gasoline[citation needed],
resulting in an overall lower power output at the regular compression ratio
of an engine run at on gasoline. However, with an engine tuned to the use of
LPG (i.e. via higher com... 阅读全帖
T*U
发帖数: 22634
31
来自主题: Automobile版 - 给车加什么油?
do you know the diff between LPG and gasoline?
Octane rating of Alcohol is very high as well. you can't give a conclusion
based on comparing high octane rating of LPG and low octane of gasoline.
There are two variations.

ratio
of
this
c*********0
发帖数: 1676
32
有次灯亮去加油,22.8加仑的邮箱给加出了24加仑多。小二看后也不好意思,说我可以
拿收据去投诉,他只是打工的。 后来好几次去新泽西加油都是加到85块都加不满。我
的信用卡公司好像设置的是最多加85块。3.7的油价呀。85都加不满。
真不知道大家从纽约跑到新泽西去加油到底占到实惠没有。
Hundreds of N.J. gas stations cited for violations
Philadelphia Business Journal
Date: Friday, June 20, 2008, 2:27pm EDT - Last Modified: Friday, June 20,
2008, 2:29pm EDT
Click here to find out more!
More than 300 New Jersey gas stations were cited for violations ranging from
pricing discrepancies to inaccurate octane ratings and out-of-tolerance
equipm... 阅读全帖
D***0
发帖数: 5214
33
来自主题: Automobile版 - 犹豫,forester, outback, RAV4选哪个?
看清楚...
Fuel requirement: Unleaded gasoline (87 octane)
Standard on: 2.5i, 2.5i Premium, 2.5i Limited, 2.5i Touring

Fuel requirement: Premium unleaded gasoline (91 octane). 93 octane
recommended.
Also Standard on: 2.0XT Premium
a***n
发帖数: 5665
34
来自主题: _Bimmer版 - Re: 汽油标号的秘密(转载)
【 以下文字转载自 Racing 讨论区 】
发信人: leedstao (Senior), 信区: Racing
标 题: Re: 汽油标号的秘密(转载)
发信站: BBS 未名空间站 (Tue Jun 12 11:42:14 2007), 转信
是因为计算标准不一样的,作者自己在忽悠人
from wiki
The most common type of octane rating worldwide is the Research Octane
Number (RON). RON is determined by running the fuel through a specific test
engine with a variable compression ratio under controlled conditions, and
comparing these results with those for mixtures of isooctane and n-heptane.
There is another type of octane rating, called
w*********g
发帖数: 30882
35
这个回复很赞。另开一贴。
====================
Re: 现在去超市,made in china比以前少多了,更多的是
发信站: BBS 未名空间站 (Sun Sep 4 12:27:03 2016, 美东)
发信人: octane (octane), 信区: Military
貌似有几个人围攻破熊,我老来说一说。
首先,感觉你们包括破熊都太迟钝了,中国制造的商品在美国商场里下降的趋势2013年
就出现了,你们现在才讨论,估计你们很少去买东西。除了在米国观察,我每年都到中
国去出差,实地走访。08年以前国内人都觉得不错,2008到2012年国内人说上班压力越
来越大干以前双倍的活拿同样钱,最近几年每年都听人说“今年的情况比去年还要糟”。
这个经济趋冷的情况实际上从这届政府上台之前就开始了。我也不去看数据和宣传,只
看商场里的顾客。同一地区的同样几家商场,08年前顾客购买踊跃,08到12年顾客购买
犹豫,最近几年商场里的售货员比顾客多(有人要说这是由于网购的竞争,是有一点影
响,但是普通百姓网购还是比较少量,而且品种有限),然而一旦有打折促销就会排长
队挤死人。另外,... 阅读全帖

发帖数: 1
36
来自主题: Military版 - 宋朝中国人评价东北女真人
张学良 是汉人 不行。
连慈禧 这种没见识的 都敢宣战
[在 octane (octane) 的大作中提到:]
:尼玛这帮人偏偏不说重点,明明是冷兵器时代女真有马有力气,所以打得过。到热兵
器时代,即使是北洋军阀都捏死他们,到张学良时候,一枪不发就丢了东北。
:另外抢东西厉害不一定搞经济也厉害,同样蒙古国现在也差不多
s**********i
发帖数: 711
37
来自主题: Automobile版 - Re: help me answer this: 问个油的问题

AKI = (RON + MON)/2
RON: research octane number
MON: motor octane number
here both of those methods are used to determine
AKI, which is used at all gas stations. (85, 87,
89, 91, 93, etc.)
gasoline FAQ: ftp://rtfm.mit.edu/pub/faqs/autos/gasoline-faq/
u**********0
发帖数: 572
38
来自主题: Automobile版 - 车子低速抖动,到底怎么回事?
自己就是一般开车者。
理工出身而已。
哪里有instruction 可以follow?
另外我前面加了Prestone Fuel Injector Cleaner ,才加了,一箱油才少了一半。发
现没起作用,如前面所说,昨天回来一直低速震。
刚才搜了以下,好像Lucas Oil Products Octane Booster (Lucas Octane Booster
helps eliminate spark knocks, pinging, dieseling and is a genuine
performance enhancer. It is suitable for use in fuel-injected, carbureted,
throttle-body and rotary engines. It's also safe for turbos, oxygen sensors
and catalytic converters. )更好一点。
是不是可以加后面这个?因为才加了前面的,可以马上或者各一箱油之后再加?
谢谢
l**********i
发帖数: 11748
39
来自主题: Automobile版 - 两种不同号的油可以混合在一起吗
汽油里添加octane是防止Engine knocking的 跟的Engine压缩比有关
标号向上兼容,加高了没必要, 加低了可能会引起Engine损伤
不过现在大部分的车都能检测engine knocking
然后根据需要自动调节timing或者boost pressure
标号只跟octane有关,还有不同牌子的汽油里面的添加剂不一样
你manual上要是写的87, 你可以随便混加
k********t
发帖数: 2
40
来自主题: Automobile版 - 请教一下加油的问题
手册上说用 unleaded gasoline. octane rating 87[Research octane number 91] or
higher.
这个指的就是87号油吧?这个91又是什么呢? 谢谢
D*******l
发帖数: 5462
41
sienna看数据,加速性能比odyssey快一点点。我不知道你们说的面是怎么来的。
http://www.insideline.com/honda/odyssey/2011/2011-honda-odyssey
2011 Honda Odyssey Touring Elite reached 60 mph in 8.1 seconds and covered 1
,320 feet in 15.9 seconds at 88.3 mph.
Drivetrain
Configuration Transverse, front-engine, front-wheel drive
Engine type Naturally aspirated port-injected V6, gasoline with cylinder
deactivation
Displacement (cc/cu-in) 3,471cc (212 cu-in)
Block/head material Aluminum/aluminum
Valvetrain SOHC, four val... 阅读全帖
t******s
发帖数: 54
42
来自主题: Automobile版 - 新鲜出炉的6月份minivan销量图
更正一下, 它不需要premium gas.
From user manual: Use unleaded regular gasoline with an octane
rating of at least 87 AKI (Anti-Knock Index) number (Research octane number
91).
t******s
发帖数: 54
43
来自主题: Automobile版 - 新鲜出炉的6月份minivan销量图
更正一下, 它不需要premium gas.
From user manual: Use unleaded regular gasoline with an octane
rating of at least 87 AKI (Anti-Knock Index) number (Research octane number
91).
q********0
发帖数: 41
44
哇,太专业了吧,好牛,完全不懂。
查了下manual说recommendation: unleaded premium gasoline,pump octane number
91 or highter, use lower octane gasoline can cause occasional metallic
knocking noise in the engine will result in decreased engine performance,
endorses the use of "Top tier detergent gasoline".
在纽约albany附近,不知道算不算高原。
D*******o
发帖数: 3229
45
来自主题: Automobile版 - 什么样的2B开车留100米距离?
如果我在HOV上开,车速不比右手passing lane上低,算猥琐的2B吗?
几个月前引起讨论的故事是这样的:星期天赶几十英里高速回家,车里带着老婆和两个
孩子,最小的孩子在carseat里睡着了。为了尽量减少不必要的加速减速,选择最左边
的HOV,我当时车速大约略低于限速+10%,至少不比右手passing lane上低。有一辆
sedan以很快的速度从远方开过来后在我后面大约一个车身距离tailgating,我轻点刹
车提醒他保持距离,然后几乎引起了一场road rage。
发信人: octane (octane), 信区: Automobile
标 题: Re: 什么样的2B开车留100米距离?
发信站: BBS 未名空间站 (Fri Nov 14 18:02:04 2014, 美东)
+1
只能用猥琐来形容这样的2B。开车猥琐的人,自以为高大上,实际效果就是加深其他开
车人对长着类似脸的人的恶劣刻板(stereo type)印象。这种人和康妈托,度论云,老
将等自恨团体有很大的交集。不过就是自私加开车技术差而已,不用找这样那样的借口
A*****i
发帖数: 1420
46
来自主题: Automobile版 - 汽油请教
汽车手册上是这么写的
Fuel types
Unleaded gasoline (Octane rating 87 [Research Octane Number 91] or
higher)
是不是加87的就行了。
先谢谢啦!
a*****n
发帖数: 109
47
来自主题: Automobile版 - 2015 altima 2.5s应该加几号油
看说明书上是这么说的:
Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti
-Knock Index) number (Research octane number 91).
上文的意思是起码加87号么,那么能加91号么。因为我知道加的油不是说越高越好,取
决于发动机的压缩比。这样的话,如果是我理解错了的话,希望指出,毕竟是自己买的
新车,能加好一点的油自然希望好一点。
谢谢啦~
z*******o
发帖数: 1710
48
我看了一下,好像octane number跟火前传播速度确实没有太大联系!
文章链接:http://www.2strokeheads.com/tech-octane-detonation.htm
D*******o
发帖数: 3229
49
来自主题: Automobile版 - 拜托老中能不能找驾校学车
在山区公路上遇到过几次,一大群人骑自行车,两两并排,后面压住一长串汽车。几乎
清一色的老白。
发信人: octane (octane), 信区: Automobile
标 题: Re: 拜托老中能不能找驾校学车
发信站: BBS 未名空间站 (Fri Jan 15 15:27:40 2016, 美东)
同意这个说法。我个人不是自恨,在职场和立场上都无脑挺老中。但是,话说得难听一
点,很多老中开车真的欠收拾,这些老中自以为开得很稳当安全,其实是在做死,把马
路当作自家后花园,想怎么开就怎么开,还不是开得快的那种。有一次跟人卡铺,那个
老中在开55迈的山道上保持开25迈。很多老中开得慢又不守规矩,最容易被条子盯上。

发帖数: 1
50
来自主题: Automobile版 - 来美生活第一关,如何保住小命
学习
[在 octane (octane) 的大作中提到:]
:最近几年频发留学生被害事件,各人有各人的看法,不同的行为导致不同的结果。本
帖无意装B假装大牛,也无意跟人探讨是否自恨,只是提醒一下。

:...........
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