a*******r
发帖数: 260 | 1 ICE vehicle has a combustion engine system, which adds more weight.
跑。 |
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T**********e
发帖数: 29576 | 3 好，谁也别想一下开500麦了，都200麦强制等充电桩一小时充电一小时，杜绝疲劳开车。 |
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t**x
发帖数: 20965 | 4 跟总统作对
trump的特色是
不环保， deregulation
加州有独立的苗头 |
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G*******h
发帖数: 4091 | 5 他要是明年就开禁，我就敬他是条好汉。
他要是二十年后开禁，那就是attention whore！ |
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T**********e
发帖数: 29576 | 6 绿党反对设定每年难民数目上限，要全面禁止汽油发动机，还要全欧财政一体分配，简
直是国家自杀。现在FDP退出执政谈判，默克尔的CDU拒绝AfD参与执政，只剩下组成少
数政府或者重新选举的选择了。
The three top hurdles in German coalition talks
Here are the three main stumbling blocks on which they will have to reach
common positions to avoid snap elections.
Immigration
Migrants and refugees has been Germany's toughest political issue since a
mass influx from 2015 brought some 1.2 million asylum seekers, sparking a
backlash that has seen the far-right AfD party enter parliament.
Merkel's CDU a... 阅读全帖 |
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w*********s
发帖数: 2136 | 7 The books have been burning
Last Updated: Thursday, September 16, 2010 | 8:15 PM ET
http://www.cbc.ca/world/story/2010/09/10/f-book-burning-timeline.html#ixzz0zrnc97ci
There is something about burning books.
Shredding, soaking, pulping or any other method of destroying books just
does not compare. Neither does banning or censoring books.
Many of us can even identify the temperature at which paper combusts. But
can we answer the same question for other materials? Fahrenheit 451 was the
title of R |
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j******u
发帖数: 26 | 8 简单说，引擎的排气量(displacement)决定了每个周期能有
多少气体流过，用升或立方英寸为单位。4.9升的发动机转一
周，能吸进4.9升的空气，2.2升的转一周，能吸进2.2升的空
气，如此简单。
发动机推进汽车的动力来自于燃烧汽油蒸汽和空气的混合气。
这混合气烧得越快越多，动力就越强。因为4.9升的V8发动机
每个周期能吸进比2.2升发动机多得多的燃料空气混合气，2.2
升的就必须转得更快，从而在相同时间内完成更多的爆燃周期
(combustion cycle)，才能产生和4.9升发动机相当的动力。
这样，引擎的排气量越小，它就必须转得越快才能产生等量的动
力。可以说，如果假设车子的重量一样，空气和路面阻力一样，忽
略传动机构的差异，那么小发动机必须比大发动机转得更快才能保
持车子有同样的行驶速度。
不妨这样想：假如汽车吸入的每一升气体能使车前进一米，再假
如你在用一个每推一次能供应两升气体的打气筒，每秒钟推两次来
提 |
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s****a
发帖数: 165 | 9 RotaryEngine
图示的就是转子发动机，右边是火花塞，图示的状态是左上吸气结束，右边压缩完成即将
点火爆发，左下在排气。下面2个是侧面图。
这是上图的右视图，2个孔都是火花塞孔
这是第一个图的左视图，
最早的rotary发动机是设计成画圆运动的，但结构太复杂
改良后变成画8字运动，吸气，排气，压缩，爆发同时进行。轴转一个循环有3次点火爆发
，比同等活塞发动机马力大
优点：同等马力，发动机小而轻，rx-7FD3s的654cc*2有400马力，回转发动机比上下运动
的发动机的震动小。高低转速都很smooth。
缺点：费油，FD3S 4Km/l,特别是在低转速时产生吸气不足，为弥补而多加油比，低速时
耗油。发动机cost高。
combustion.
energy |
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r*****t
发帖数: 32 | 10 My check engine light is on. My technician spent a lot time but cannot find
the problem. He said everything works good, maybe need an engine flush. I am
Not sure whether I should...
below is from http://www.jiffylube.org/engine_flush.htm
The Engine Flush
Why do I need an engine flush?
All internal combustion vehicle engines generate carbon, wear metals, acids
and other contaminants. The best way to keep the engine clean of such
contaminants is to follow owner’s manual recommendations for oil cha |
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a*******t
发帖数: 891 | 11 "If your car requires high-octane gasoline and you habitually use regular gas
because the engine exhibits no sign of knock, you’re outsmarting yourself.
Most modern, computer-controlled engines include a knock sensor that detects
knock and retards the ignition timing, causing the spark plugs to fire
slightly later in the cycle. This typically prevents abnormal combustion and
knock, which allows vehicles specified for premium fuel to run on lower-grade
gasoline if it is all that’s available. Whil |
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f*****y
发帖数: 142 | 12 very good article on emission control.
===========================================
http://www.gatewaycleanair.com/mechanic/air4_3/nox.htm
Emission Controls - Demystifying Oxides of Nitrogen
By Steve Zack
Oxides of Nitrogen (NOx) are one of the four pollutants emitted by internal combustion engines. The others are carbon monoxide (CO), hydrocarbons (HC), and sulfur dioxides (SO2). Like the other three gasses, excessive amounts of NOx are the by-product
of engines operating under something other t |
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h*******r
发帖数: 847 | 13 最纯粹的技术帖：汽车术语 中英文对照
汽车之家 日期：9/7/2005 点击：1664
http://club.autohome.com.cn/050922/27357.html
原帖：汽车术语- 中英文对照
引擎系统(Automotive Engine System)
燃烧室(Combustion Chamber)
活塞到达上死点后其顶部与汽缸盖之间的空间，燃料即在此室燃烧。
压缩比(Compression Ratio)
活塞在下死点的汽缸之总容积除以活塞在上死点的总容积(燃烧室容积)，所得的值就称为
压缩比。
连杆(Connecting Rod)
引擎中连接曲轴与活塞的连接杆。
冷却系统(Cooling System)
可藉冷却剂的循环，将多余的热量移出引擎，以防止过热的系统。在水冷式的引擎中，包
括水套、水泵、水箱及节温器。
曲轴箱(Crankcase)
引擎下部，为曲轴运转的地方，包括汽缸体的下部和油底壳。
曲轴(Crankshaft)
引擎的主要旋转机件，装上连杆后，可承接连杆的上下(往复)运动变成循环(旋转)运动。
曲轴齿轮(Cr |
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s*********r
发帖数: 609 | 14 三角形的尖端蘸一点....哈哈哈哈
打酱油哪？还蘸一点。。。那你说说engine oil 不被inject 到combustion chambers,
你从哪里“蘸一点”？你不懂好歹也google一下吗。 |
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s*******t
发帖数: 2896 | 15 如果我没理解错，水从air filter -- throttle body -- combustion chamber 进了
crank case? 有点怪异吧。
以前的检查报告怎么说的？ |
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t********6
发帖数: 163 | 16 LZ - how much you end up paying?
Agree. this thing is weird. never seen it.
Do not have a LZ's car to look at it. So I am just guessing here.
Normally the air duct opening is facing front, and water can get into the
air box(/air filter box). And right there the water will drain through a
hole at the lowest point of the box.
So if I have to guess, that drain hole is clogged somehow. Then water will
accumulate gradually down the line.
once it pass intake valve and into combustion chamber, some wa |
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x*****3
发帖数: 476 | 17 我的coolant泄漏，去店里修了。店主说是waterpump坏了，换了waterpump，parts+
labor一共是590多。然后一周后，coolant又没有了，他说可能是新的pump没有fill，
又refill了。一周后，coolant再次没有，去店里，他说他也不知道怎么回事？只能帮
我refill。
我实验室一个朋友说，有可能waterpump没有坏，他们没有找到真正的原因。
我现在应该怎么办？coolant没有漏到地上，
有朋友说：One possibility is the coolant leaks to the engine oil system.If
the engine oil looks like milk color it means the coolant leaks to the
engine oil area. This will cost a lot to fix it ($1000+).
Another possibility is the coolant leaks to the engine combustion chamber
and bur |
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u****a
发帖数: 568 | 18 You may have head gasket problem.
1 if the coolant leaks to the engine oil system, the engine oil level should
go up. Check the level
2 if the coolant leaks to the engine combustion chamber, you should see a
lot of steam coming from the tail pipe and it smells like coolant. |
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x*****3
发帖数: 476 | 19 没有进engine oil system，因为我没有看到milk状的东西，而且oil level也没有上升
；可能也没有进engine combustion chamber，没有明显的白雾出来，不过也有可能我
们这里温度太高（110 F），白雾不明显。
要是真的就是ustoca所说的head gasket问题，我真想给信用卡公司打电话了！ |
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t****s
发帖数: 83 | 20 谢谢你。
不过那两个附件好学术啊，看不懂。我过几天去找修车师傅看看。
combustion
response to
mixture
air
time
longer
pressure
with |
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a*******a
发帖数: 4212 | 21 Motor oil is liquefied oil which we use mostly in internal combustion
engines. Motor oil is used primarily for lubrication, but there are many
benefits to using motor oil in your vehicle. Motor oil lubricates every
moving part of your engine. It creates a layer that acts as a protective
film. This film reduces friction and essentially keeps metal moving parts
from ever coming in contact with each other.
Motor oil also cleans your engine. When gasoline and air come in contact
with each other thro |
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s******r
发帖数: 5309 | 22 The emission control system consists of a set of sensors (usually called O2
sensor but actually these are
more than oxygen sensors in newer cars), catalytic converter which converts
unburned CO to CO2 by burning
it before releasing from the tail pipe, and the on board computer. The
system controls the air-fuel mix.
When there is leak, bad gaskets etc, sometimes in the engine parts, the mix
could not be adjusted to the
correct level and become too rich or too poor and the combustion will not be
e |
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l******a
发帖数: 10467 | 23 修车铺是用combustion leak tester来测试， 就是抽出一部分coolant, 然后注射进测
试用的， 如果head gasket有问题， 那么测试液就会从蓝色变成黄色， 你google一下
我说的那个tester就知道怎么回事情了， 很容易测试的， 不要猜 |
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i*******9
发帖数: 769 | 24 In fact, I am not sure whether it is the problem from oxygen sensor. The
SES light appeared and disappeared every two weeks, I went to Autozone to
read the code, it said the oxygen sensor has some problems. So I change it
for about 140 dollar with a private mechanic. But when I check the spark
plugs, they said it is a copper head type and have worked for 100k miles,
far away from it is lifespan (30k miles?), so I changed it to IR type
spark plugs. I think the problem may caused by the spark plug... 阅读全帖 |
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s******n
发帖数: 87 | 25 http://autos.yahoo.com/articles/autos_content_landing_pages/165
facts-about-warming-up-your-car-in-winter/
Old habits die hard, and one of the oldest — still rigorously enforced
by many drivers — is that "warming up" the car for a few minutes is
necessary to avoid some kind of unspecified damage.
But idling is totally unnecessary, which is why many communities have
enacted ordinances against the practice.
Don't take my word about idling being ineffective, but do listen to my
mechanic, Rob Maier,... 阅读全帖 |
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s***q
发帖数: 10585 | 26 只要是一辆车，都能找到一大堆歧义
ACURA
Always Catching Up, Rarely Ahead
Asia's Curse Upon Rural America
A Car Usually Rarely Appreciates
AMC
Always Made Crap
Autos May Combust
AUDI
Accelerates Under Demonic Influence
Always Unsafe Designs Implemented
Always Under Diagnostic Inspection
Always Upside-down, Double Interest
Another Understated Dealer Incentive
A Used Dodge Incognito
BMW
Bob Marley and the Wailers
Beautiful Mechanical Wonder
Beautiful Models Wanted
Bavarian Manure Wagon
Biggest Metal Waste
Big Money... 阅读全帖 |
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c*******s
发帖数: 735 | 27 跟我一样啊。04 Passat 1.8T，等红灯时vibration很明显，换到N档马上好了。不过
我的check engine没有亮过。去一个车铺换了spark plug和后面的刹车，没有感觉有什
么改善。车铺小二建议做Throttle body cleaning,combustion chamber cleaning。我
不大清楚这些东东是什么就没做，他说暂时也没什么大问题就让我开走了。
我是不是还是去做了放心？ |
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f****t
发帖数: 15913 | 28 Now it is easy to make the decision. It is time to give up and move on.
Engine is damaged and engine oil leaks into combustion area. |
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f****t
发帖数: 15913 | 29 engine oil may leak into the combustion area and be burnt by engine.
It may also leak into coolant. Check the coolant.
Either way, it is an expensive repair (a few thousand $).
Either hyundai pays for it or you pay for it.
This is probably a manufacture defect. Something is wrong with engine block
or engine head or head gasket.
。有人说是烧机油，麻烦太大了。看来得找dealer把问题尽快解决了。 |
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c*****r
发帖数: 76 | 30 97年lincon Continental
因为修power steering system 的时候把一个连接cooling system 的overflow
tank 的hose 打开过，从那以后车子开20 分钟以上就开始overheat.已经换了water
pump, thermostat, radiator. cooling fan 没有问题。做过pressure test, 没有
leak. 做过combustion test, head gasket 没有问题。
去了几个修车行都检查不出问题所在。
怀疑有air locked. 但是已经bleed 过很多次。不解决问题。google 过，有人说
要把车前头lift up 3 feet high, 来排除air. 不解how and why? anybody have any
idea?
网上 有人说在thermostat上钻一个孔，以便于 让air通过。去哪里找这样懂行的
修车人？
奶奶的到处都是修日本车的expert technician. 各个修车铺都说熟悉日本车，不
熟悉美国车。难... 阅读全帖 |
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l******a
发帖数: 10467 | 31 我反正诊断是headgasket完了， lower ball joint我就可以给你免费换， 你请我喝咖
啡就行了， 排气管有甜味， coolant里有油， 你还越战越勇了， 哼哼， 不知道那帮
流氓的combustion test怎么做的 |
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c******n
发帖数: 4965 | 32 i think he is bullshiting
gasket leak will cause coolant to go into combustion chamber and grafually
lose all coolant. not boil. you shoul also see white smoke |
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t****3
发帖数: 2337 | 33 AUDI打破了这个铁板钉钉的东西，更是先进了。 23,000 rpm,每小时打入2204磅空气
"The gas paths after the compressor are very short; this means that the torque is built up extremely quickly, even more dynamically than on a naturally aspirated engine of the same displacement. The 3.0 TFSI responds sportily to the throttle, with exceptional agility and bite. And it revs up to the maximum of 6,500 rpm with playful ease, achieving its rated output of 213 kW (290 hp) at just under 5,000 rpm.
The compressor of the new 3.0 TFSI is wha... 阅读全帖 |
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i**p
发帖数: 902 | 34 古狗了一下, 发现了下面的文章. 我车的发动机还能启动, 应该不是timing belt的问
题.
-----------------------------------
Engine Will Not Start
When the timing belt breaks, the engine absolutely will not start
because the camshaft is no longer operating the valves, making combustion
impossible. The camshaft has uneven lobed surfaces that lift the pushrods,
allowing the valves to open and close with precise timing. Without this
operation, the engine cannot even suck fuel into the chambers for ignition
Read more: What Happens Wh... 阅读全帖 |
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l**k
发帖数: 45267 | 37 because technical improvement made bigger cylinder more feasible. combustion
efficiency in big cyclinder is a big problem. |
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g****u
发帖数: 1 | 38 Care and Maintenance Tips Keep Your Car Running in Top-Notch Condition
We’ve compiled our best expert advice, surprising tricks, and car care tips
to prolong the life of your automobile!
1. Be patient during the break-in period
You’ve bought your dream car and now you want to make it last at long as
possible in top condition. Here are some things to remember as you pull it
out of the dealer’s lot:
During the break-in period, typically the first 1,000 miles (1,600 km), keep
your speed under 55 mp... 阅读全帖 |
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S*****n
发帖数: 6055 | 39 PM is not a concern from gasoline powered vehicles, at least for now. It is
mostly from diesel combustion.
NOx is a concern for both gasoline and diesel powered vehicles, as well as
coal fire power plants (and natural gas/biofuel power plants).
We sell deNOx products to both auto manufacturers and power plants. At least
for now, electric cars have worse environmental impact than gasoline/diesel
powered vehicles. But, if we only consider metro area, electric cars have
better environmental impact ... 阅读全帖 |
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x******4
发帖数: 3001 | 40 有人用过Fuel System Cleaner吗?据说有很多好处：
• Restore lost power and performance
• Clean and protect against sulfurs that can
harm fuel gauge sensors. This protection has
been shown to last thousands of miles.
• Help reduce the octane requirement
• Fight knock, ping, and run-on caused by
deposit buildup
• Clean power robbing deposits from intake
valves
• Cleans harmful deposits from fuel injectors,
intake valves, combustion chambers and
carburetors.
据说有的check engine的灯亮了... 阅读全帖 |
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a***l
发帖数: 248 | 41 Have you tried to jump start the car? If it was the battery, you should be
able to jump start.Mostly you have a low battery, possibly because you've
forgot to turn off the head light.
If jump start wouldn't work, you probably have either a failed alternator or
starter. These can all be fixed in a few hundred bucks.
Since you've mentioned the coolant is gone, refill it with water and watch
for any leak (external) based on water marks on the ground. The worst
scenario, hopefully not,is you have a ... 阅读全帖 |
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y*****g
发帖数: 6223 | 42 http://en.wikipedia.org/wiki/VVT-i
仔细看英文的。里面好像说了什么。
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable
valve timing technology developed by Toyota, similar in performance to the
BMW's VANOS.
再看VTEC:
VTEC (Variable Valve Timing and Lift Electronic Control) is a valvetrain
system developed by Honda to improve the volumetric efficiency of a four-
stroke internal combustion engine. The VTEC system uses two camshaft
profiles and electronically selects between the profiles. I... 阅读全帖 |
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a****r
发帖数: 71 | 43 Payoff for Efficient Cars Takes Years
http://www.nytimes.com/2012/04/05/business/energy-environment/f
....Except for two hybrids, the Prius and Lincoln MKZ, and the diesel-
powered Volkswagen Jetta TDI, the added cost of the fuel-efficient
technologies is so high that it would take the average driver many years —
in some cases more than a decade — to save money over comparable new models
with conventional internal-combustion engines.... |
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t*********r
发帖数: 2558 | 44 Combining driving pleasure and economy
In developing TSI technology it was our aim to create engines that offer
significant benefits by reducing fuel consumption and CO2 emissions but at
the same time are also impressive for their superb power delivery.
Advantages resulting from “downsizing”
The recipe for the success of Volkswagen’s TSI engines is to be found in “
downsizing”. Maximum power is obtained with minimum fuel consumption from a
smaller engine. The reduction in engine size has brought... 阅读全帖 |
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h****2
发帖数: 69 | 45 看起来不错啊~~
新的2.0T变成225hp 258lbft..多了个3.0T 272hp 295lbft.
更多图片在此：
http://audiusanews.com/imagegallery/view/list/20/79/Q5
2013 Q5 2.0T跟2013 X3 28i比起来哪个更好啊？
Apr 25, 2012 , INGOLSTADT, Germany
High-performance SUV with many talents – the updated Audi Q5
- Completely updated Q5 model series
- New engine-transmission pairings are up to 15 percent more efficient
- Audi connect services set new benchmark for infotainment
Sporty, spacious, comfortable and multifunctional – the Audi Q5 has a
versatile and ... 阅读全帖 |
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m*********1
发帖数: 786 | 46 P=F.V; Pf >> Pc, v is the same, Ff>>Fv, if reach to the maxmium P.
Now v is equal, then obviously it is not running at the maxmium P.
Different cars, there is an optimal speed at which the cost of gas is
minimum.
In addition, running at this condition, the combustion occurring within F is
not that complete. |
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s***s
发帖数: 855 | 47 我在大概6~7年前的国内(电脑之家)论坛上为了解释变速箱作用贴过一个图, 你看了就
明白了.
用一段十个字内解释变速箱就是:
Compensation for internal combustion engine output imperfection
acceleration |
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y******n
发帖数: 8667 | 48
...oh... engine tune up....
Engine tuning is the adjustment, modification or design of internal
combustion engines to yield optimal performance, to increase an engine's
power output, economy, or durability.
A tune-up usually refers to the routine servicing of the engine to meet the
manufacturer's specifications. Tune-ups are needed periodically as according
to the manufacturer's recommendations to ensure an automobile runs as
expected. |
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d***p
发帖数: 937 | 49 有Engine Throttle 问题，也有自动加速问题。
http://www.detroitnews.com/article/20121005/AUTO0102/210050401/
U.S. reviews request to investigate 1.6M Ford Escape SUVs
Washington — The National Highway Traffic Safety Administration said Friday
it is considering opening a formal investigation into 1.6 million Ford
Escape SUVs for engine problems.
The NHTSA said it had agreed to review a request by the North Carolina
Consumers Council to open an investigation into alleged electronic throttle
body failures resulti... 阅读全帖 |
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z*h
发帖数: 773 | 50 Q2. What powertrain and fuel will become the dominant transport means in the
future?
A number of scenarios could bridge between renewable primary energy and
transportation energy need (Fig. 1) through four powertrain systems: (i)
ICEs and/or electric hybrids that burn liquid biofuels and compressed
methane, (ii) battery electric vehicles (BEVs) that run on electricity
stored in rechargeable batteries, where electricity can be generated from
sun radiation, tide, geothermal, wind, and nuclear ener... 阅读全帖 |
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