B*Z
发帖数: 7062 | 1 The 10 Best Engines of the 20th Century
Don Sherman | WardsAuto
Jan 1, 2000
It took a century for automotive engines to mature from cantankerous
contraptions to the smooth, reliable machinery that currently enables our
mobility. The following honor roll celebrates the 10 best - those engines
that motored far beyond the call of duty to advance the internal-combustion
cause.
Ford Motor Co. Model T Inline-4 (1909) After eight lackluster designs, Henry
Ford finally hit paydirt with his 1909 Model T.... 阅读全帖 |
|
r****1
发帖数: 4301 | 2 占星警句（Choice Aphorisms）原文摘选自卡丹(Jerome Cardan 1501—1576)的着作《
Seven segments of Cardan》。卡丹被誉为16世纪的博学者，拥有数学家、物理学家、
医药学家、天文学家、及术士等多个头衔。在他的有生之年，他出版了多达54本着作和
44件手稿，内容涉及了他研究的各个领域。占星警句讲的是星盘分析的一些规则和条文
，按条目的方式列出，分为总论篇、命盘篇、推运篇、医疗篇、择时篇、蚀彗篇、气候
篇、农作篇、实事篇等9部分，论及范围着实广泛。不过，如果以条文的数目来看，命
盘篇是核心部分，共计100条，其它篇的内容相对少很多，可能是与删节有关。
在历史上的顶级占星名家中，还没有Cardan的位置，不知是不是他学识太杂的原因，
很多谈及他的资料均是与数学、人文科学或玄学相关，占星作为玄学，只是他学识中的
一小部分。根据有关资料的判断，占星警句很可能是他汇编成文的，其中有不少条文内
容是值得我们深入思考和借鉴的。
1、A Child is then said to be born when first it breathes in... 阅读全帖 |
|
s**********g
发帖数: 102 | 3 Combustion and energy conversion, including:
Solid Fuel Combustion and incineration in packed beds, particularly biomass
combustion, including computer modelling and experiments.
Liquid Fuel Combustion, in particular modelling of mixture combustion using
continuous thermodynamics, bio-fuels, ignition, high pressure effects.
Energy Conversion: reciprocating steam engines.
Brief slide show on current research
Fourth year thesis topics |
|
s**********g
发帖数: 102 | 4 Combustion and energy conversion, including:
Solid Fuel Combustion and incineration in packed beds, particularly biomass
combustion, including computer modelling and experiments.
Liquid Fuel Combustion, in particular modelling of mixture combustion using
continuous thermodynamics, bio-fuels, ignition, high pressure effects.
Energy Conversion: reciprocating steam engines.
Brief slide show on current research
Fourth year thesis topics |
|
s**********g
发帖数: 102 | 5 Combustion and energy conversion, including:
Solid Fuel Combustion and incineration in packed beds, particularly biomass
combustion, including computer modelling and experiments.
Liquid Fuel Combustion, in particular modelling of mixture combustion using
continuous thermodynamics, bio-fuels, ignition, high pressure effects.
Energy Conversion: reciprocating steam engines.
Brief slide show on current research
Fourth year thesis topics |
|
g*****9
发帖数: 4125 | 6 Pinging in spark-ignition internal combustion engines occurs when combustion
of the air/fuel mixture in the cylinder starts off correctly in response to
ignition by the spark plug, but one or more pockets of air/fuel mixture
explode outside the envelope of the normal combustion front. The fuel-air
charge is meant to be ignited by the spark plug only, and at a precise time
in the piston's stroke cycle. The peak of the combustion process no longer
occurs at the optimum moment for the four-stroke c |
|
D***0
发帖数: 5214 | 7 好像另外一个帖子也提到这个NOx是哪儿来的问题。麻烦大家发言之前先google/wiki:
http://en.wikipedia.org/wiki/NOx#Industrial_sources_.28anthropo
sources.29
The three primary sources of NOx in combustion processes:
1 thermal NOx
2 fuel NOx
3 prompt NOx
Thermal NOx formation, which is highly temperature dependent, is recognized
as the most relevant source when combusting natural gas. Fuel NOx tends to
dominate during the combustion of fuels, such as coal, which have a
significant nitrogen content, particularly when burned in combus... 阅读全帖 |
|
n**********o
发帖数: 1016 | 8 https://www.nae.edu/MediaRoom/178117.aspx
Abadi, Martín, principal scientist, Google Inc., Palo Alto, Calif. For
contributions to the formal theory of computer security.
Abrahamson, Norman A., chief engineering seismologist, Pacific Gas &
Electric Co., Piedmont, Calif. For contributions to seismic hazard
assessment and for leadership in engineering seismology and earthquake
engineering.
Adams, Robert W., senior fellow, Analog Devices Inc., Acton, Mass. For
contributions to digital storage and... 阅读全帖 |
|
|
G***G
发帖数: 16778 | 10 how could the insufficient combustion happen at the house where there is no
gasoline-driven generator?
in a house, even the water heater is driven by natural gas.
for natural gas, there are only two status: combustion, and leaking.
no insufficent combustion status for the natural gas.
therefore, where can the CO come? |
|
f***y
发帖数: 4447 | 11 由美国航空航天学会（AIAA）出版的美国航空航天期刊（Aerospace America），近期
发表了2015年美国及全球航空航天的综述（In Review 2015），并用四分之一的版面介
绍了王健平教授领导的北京大学工学院燃烧推进中心连续爆轰发动机的研究进展。
综述写道：在中国，北京大学持续开展圆筒燃烧室（他人均采用传统的圆环腔）的实验
研究。中国学者在全球同行中取得了重大的进展，特别是在包含所有布局下物理和化学
过程真实状态的数值模拟。他们在减小压力震荡和提高性能方面的开展了非常有意义的
工作，包括马赫数分布以及收缩-扩张喷管的数值模拟。
连续爆轰发动机是新概念航空航天动力，具有燃烧速度快、易控制、自压缩、体积小、
效率高、比冲大、燃料流量和推力大幅可调、可多次熄点火的特点，近年来受到世界各
主要国家的关注。综述介绍了美国国防部先期研究计划局(DARPA)、美国空军科研办公
室(AFOSR)、美国海军研究办公室(NRO)、美国能源部(DoE)相关项目，以及日本、法国
的研究进展。
同传统的火箭、活塞、涡轮发动机的等压燃烧不同，爆轰是与激波紧密耦合的超声速的
等容燃烧。以往的连续... 阅读全帖 |
|
w********2
发帖数: 632 | 12 An air-cooled rotary that powered a number of successful World War I
aircraft
History
The rotary engine is unique in that, unlike fixed radial engines, it has a
stationary crankshaft bolted to the firewall, with everything else (
cylinders, crankcase, propeller) all rotating. The rotary in its original
form is extinct, with the term now being used to describe "Wankel" rotary
combustion engines such as those built by Mazda. Though automotive and
motorcycle rotaries were built in the United State... 阅读全帖 |
|
T*R
发帖数: 36302 | 13 Qing Chen
HHPE Tier 4 CPE Senior Engineer at Cummins Inc.
Columbus, IndianaMechanical or Industrial Engineering
Current
Cummins Inc.
Previous
Cummins Fuel System,
Institute of Underwater Engineering, SJTU,
SDARI Consultant
Education
Georgia Institute of Technology
Recommendations
1 person has recommended Qing
Websites
My Lab
105
connections
Join LinkedIn and access Qing’s full profile. It’s free!
As a LinkedIn member, you’ll join 400 million other professionals who are
sharing connections, ideas... 阅读全帖 |
|
C****s
发帖数: 134 | 14 Engines - D-4D
D-4D High technology, clean diesel
Originally introduced in Europe in the top selling Avensis range, D-4D is
widely recognised as one of the most advanced diesel technologies on the
market today. Toyota D-4D engines are available on select models of Yaris,
Yaris Verso, Corolla Verso, Innova, Avensis, Avensis Verso, RAV4, Land
Cruiser and Previa models.
Until recently, diesel engines relied on relatively simple technology with a
low-pressure mechanical injector delivering fuel to a... 阅读全帖 |
|
g********d
发帖数: 19244 | 15 ☆─────────────────────────────────────☆
BRZ (*86) 于 (Thu Oct 31 13:56:53 2013, 美东) 提到:
比较纳闷。直喷是都接受了。为什么这两个提高mpg的宝物日本车厂不去搞？是不是搞
不好还是我孤陋寡闻了？
☆─────────────────────────────────────☆
xinruzhishui (水心) 于 (Thu Oct 31 13:59:41 2013, 美东) 提到:
turbo成本太高 车价就上去了
☆─────────────────────────────────────☆
yogafire (不能不逗么) 于 (Thu Oct 31 14:00:31 2013, 美东) 提到:
可靠性提不上去吧
☆─────────────────────────────────────☆
xinruzhishui (水心) 于 (Thu Oct 31 14:00:50 2013, 美东) 提到:
至于Diesel 全世界就欧洲那嘎子喜欢这口
☆───────... 阅读全帖 |
|
e**n
发帖数: 5876 | 16 应该用block heater.
engine idle长了就contaminate engine oil了.
"When a gasoline or diesel engine idles for prolonged periods, the engine
oil becomes contaminated more quickly than when the vehicle is being driven.
Oil contamination is more prevalent in diesel engines because of the large
amount of intake air used in the diesel combustion cycle. When idling at low
rpms, such as 600 rpm, the excess air in the combustion process cools the
cylinder liners, resulting in incomplete combustion and condensatio... 阅读全帖 |
|
W***n
发帖数: 11530 | 17 The Real Cost of Your Car’s Cheap Factory Air Filter
by Timothy Zahl on December 03, 2015
Air Filters Selection
In today's world, saving money wherever possible has become essential. But
it's important not to lose sight of the fact that, sometimes, a product that
costs more up front will save you more money over time. In our business, we
've seen far too many consumers judge products solely on the basis of their
initial cost, completely neglecting any long-term economy and benefits. When
it come... 阅读全帖 |
|
G***G
发帖数: 16778 | 18 in a rental house, a female oversea student died of CO.
How could this happen?
in a house, the natural gas will be either in combustion or
leaking.
If it is in combustion, there will be no CO. If it is leaking, people living
inside can
smell it.
Normally, CO is produced by insufficient combustion, such as running a gas
generator in a basement without good ventilation. |
|
|
|
t****t
发帖数: 208 | 21 不要迷惑人：
Propane Properties and reactions
Propane undergoes combustion reactions in a similar fashion to other alkanes
. In the presence of excess oxygen, propane burns to form water and carbon
dioxide.
C3H8 + 5 O2 → 3 CO2 + 4 H2O + heat
propane + oxygen → carbon dioxide + water
When not enough oxygen is present for complete combustion, incomplete
combustion occurs when propane burns and forms water, carbon monoxide,
carbon dioxide, and carbon.
2 C3H8 + 7 O2 → 2 CO2 + 2 CO + 2 C + 8 H2O + heat
Pro... 阅读全帖 |
|
z*****k
发帖数: 86 | 22 期刊 分类 IF
PROGRESS IN ENERGY AND COMBUSTION SCIENCE 工程：化工 8
JOURNAL OF CATALYSIS 工程：化工 5.167
APPLIED CATALYSIS B-ENVIRONMENTAL 工程：化工 4.853
JOURNAL OF MEMBRANE SCIENCE 工程：化工 3.247
CATALYSIS TODAY 工程：化工 3.004
CHEMICAL ENGINEERING JOURNAL 工程：化工 2.813
FUEL 工程：化工 2.536
DYES AND PIGMENTS 工程：化工 2.507
SEPARATION AND PURIFICATION TECHNOLOGY 工程：化工 2.503
JOURNAL OF SUPERCRITICAL FLUIDS 工程：化工 2.428
PROCESS BIOCHEMISTRY 工程：化工 2.414
JOURNA... 阅读全帖 |
|
m*******g
发帖数: 5 | 23 一、学院系所简介
北京大学工学院从高起点出发，立足于尖端科技、交叉学科，着眼于未来工程科学和新
技术的发展方向，面向国家迫切需要及关系国家中长远经济发展的科学与技术研发。因
此，北大工学院的发展不片面追求规模，而是以培育核心创造能力为中心，有所为、有
所不为，优中求精。同时，学院采用与国际接轨的院长负责制，实行“教授治学，民主
治院”。
学院重建以来，在学科发展、队伍建设、科学研究、人才培养、合作与发展等方面取得
了突出成绩。学院现设有6个系和近20个研究机构，它们中多数已经达到国内一流水平
，有的已经进入世界先进学科的行列。
学院教师实行国际通行的聘任制度(Tenure-Track) ，面向全世界公开招聘优秀人才。
目前学院有正式教师120人，其中有院士10名，千人计划、长江学者、国家杰出青年基
金获得者等50余人，并有国家自然科学基金 “创新群体”3支，教育部“创新群体”2
支。工学院是北京大学“国家千人计划”获得者人数最多的学院，也是北京大学高端人
才比例最高的学院之一。
能源与资源工程系近些年发展迅速，目前拥有 21 名正、副教授，其中，院士 1 人、
“国家千人计划”教授 4... 阅读全帖 |
|
发帖数: 1 | 24 北京大学工学院能源与资源工程系海外高层次人才招聘启事
一、学院系所简介
北京大学工学院从高起点出发，立足于尖端科技、交叉学科，着眼于未来工程科学和新
技术的发展方向，面向国家迫切需要及关系国家中长远经济发展的科学与技术研发。因
此，北大工学院的发展不片面追求规模，而是以培育核心创造能力为中心，有所为、有
所不为，优中求精。同时，学院采用与国际接轨的院长负责制，实行“教授治学，民主
治院”。
学院重建以来，在学科发展、队伍建设、科学研究、人才培养、合作与发展等方面取得
了突出成绩。学院现设有6个系和近20个研究机构，它们中多数已经达到国内一流水平
，有的已经进入世界先进学科的行列。
学院教师实行国际通行的聘任制度(Tenure-Track) ，面向全世界公开招聘优秀人才。
目前学院有正式教师120人，其中有院士10名，千人计划、长江学者、国家杰出青年基
金获得者等50余人，并有国家自然科学基金 “创新群体”3支，教育部“创新群体”2
支。工学院是北京大学“国家千人计划”获得者人数最多的学院，也是北京大学高端人
才比例最高的学院之一。
能源与资源工程系近些年发展迅速，目前拥有 21 名正、... 阅读全帖 |
|
m*******g
发帖数: 5 | 25 一、学院系所简介
北京大学工学院从高起点出发，立足于尖端科技、交叉学科，着眼于未来工程科学和新
技术的发展方向，面向国家迫切需要及关系国家中长远经济发展的科学与技术研发。因
此，北大工学院的发展不片面追求规模，而是以培育核心创造能力为中心，有所为、有
所不为，优中求精。同时，学院采用与国际接轨的院长负责制，实行“教授治学，民主
治院”。
学院重建以来，在学科发展、队伍建设、科学研究、人才培养、合作与发展等方面取得
了突出成绩。学院现设有6个系和近20个研究机构，它们中多数已经达到国内一流水平
，有的已经进入世界先进学科的行列。
学院教师实行国际通行的聘任制度(Tenure-Track) ，面向全世界公开招聘优秀人才。
目前学院有正式教师120人，其中有院士10名，千人计划、长江学者、国家杰出青年基
金获得者等50余人，并有国家自然科学基金 “创新群体”3支，教育部“创新群体”2
支。工学院是北京大学“国家千人计划”获得者人数最多的学院，也是北京大学高端人
才比例最高的学院之一。
能源与资源工程系近些年发展迅速，目前拥有 21 名正、副教授，其中，院士 1 人、
“国家千人计划”教授 4... 阅读全帖 |
|
m*******g
发帖数: 5 | 26 一、学院系所简介
北京大学工学院从高起点出发，立足于尖端科技、交叉学科，着眼于未来工程科学和新
技术的发展方向，面向国家迫切需要及关系国家中长远经济发展的科学与技术研发。因
此，北大工学院的发展不片面追求规模，而是以培育核心创造能力为中心，有所为、有
所不为，优中求精。同时，学院采用与国际接轨的院长负责制，实行“教授治学，民主
治院”。
学院重建以来，在学科发展、队伍建设、科学研究、人才培养、合作与发展等方面取得
了突出成绩。学院现设有6个系和近20个研究机构，它们中多数已经达到国内一流水平
，有的已经进入世界先进学科的行列。
学院教师实行国际通行的聘任制度(Tenure-Track) ，面向全世界公开招聘优秀人才。
目前学院有正式教师120人，其中有院士10名，千人计划、长江学者、国家杰出青年基
金获得者等50余人，并有国家自然科学基金 “创新群体”3支，教育部“创新群体”2
支。工学院是北京大学“国家千人计划”获得者人数最多的学院，也是北京大学高端人
才比例最高的学院之一。
能源与资源工程系近些年发展迅速，目前拥有 21 名正、副教授，其中，院士 1 人、
“国家千人计划”教授 4... 阅读全帖 |
|
m*******g
发帖数: 5 | 27 一、学院系所简介
北京大学工学院从高起点出发，立足于尖端科技、交叉学科，着眼于未来工程科学和新
技术的发展方向，面向国家迫切需要及关系国家中长远经济发展的科学与技术研发。因
此，北大工学院的发展不片面追求规模，而是以培育核心创造能力为中心，有所为、有
所不为，优中求精。同时，学院采用与国际接轨的院长负责制，实行“教授治学，民主
治院”。
学院重建以来，在学科发展、队伍建设、科学研究、人才培养、合作与发展等方面取得
了突出成绩。学院现设有6个系和近20个研究机构，它们中多数已经达到国内一流水平
，有的已经进入世界先进学科的行列。
学院教师实行国际通行的聘任制度(Tenure-Track) ，面向全世界公开招聘优秀人才。
目前学院有正式教师120人，其中有院士10名，千人计划、长江学者、国家杰出青年基
金获得者等50余人，并有国家自然科学基金 “创新群体”3支，教育部“创新群体”2
支。工学院是北京大学“国家千人计划”获得者人数最多的学院，也是北京大学高端人
才比例最高的学院之一。
能源与资源工程系近些年发展迅速，目前拥有 21 名正、副教授，其中，院士 1 人、
“国家千人计划”教授 4... 阅读全帖 |
|
l*w
发帖数: 3758 | 28
那么多人呐。而且IEA的统计包括Combustible Renewables and Waste就是烧柴火的数字
。印度07年消耗煤当量是5.9亿吨，其中Combustible Renewables and Waste就是1.6亿
吨。
俄国煤消费当量是6.7亿吨，这个废柴就是658万吨。印度超过俄国就是这个比例超过的
。否则日本他都超过不了，日本07年，煤消费5.1亿吨，废柴不过700万吨。
土共07年消费煤当量是19.5亿吨，其中废柴也有1.9亿吨。07年美国的数据时23.3亿吨。
土共超过丫不简单。 |
|
y*****a
发帖数: 580 | 29 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 |
|
H******u
发帖数: 858 | 30 PU foam, is a combustible material, and decomposes at high temperature,
releasing combustible gases |
|
T**********e
发帖数: 29576 | 31 ULA的新Vulcan火箭要只回收一级发动机，燃料罐就扔了，发动机分离后打开一个防热
罩，然后降落伞减速，直升飞机半空中捕捉。
A sample illustration of mid-air recovery of main engine section.
ULA chief explains reusability and innovation of new rocket
CAPE CANAVERAL — United Launch Alliance will salvage the main engines
through a mid-air recovery plan and reuse them again aboard the company’s
new Vulcan rocket, saving 90 percent in booster propulsion costs, the
company announced Monday.
It is dubbed SMART Reuse, or Sensible Modular Autonomous Return Techno... 阅读全帖 |
|
b****e
发帖数: 189 | 32 Coke deposited on FCC catalyst is burned off during the regeneration process
. My question is during the industry process, is it realistic to convert all
the coked carbon to CO2 (complete combustion)? If it is partial combustion,
what is the ratio of the CO/CO2 formation (to what extent carbon is
converted to CO and CO2, respectively), roughly speaking? Many thanks! |
|
m********5
发帖数: 17667 | 33 This is the trend, dude!
All companies are lying about their combustion engine emissions!
The optimization can only be achieved when the power output is fixed. So at
least they will convert all combustion engine into generator with fixed
power. |
|
发帖数: 1 | 34 This time it’s likely we will be in a full-scale war with China very soon:
Meghnad Desai
Desai, a Padma Bhushan recipient, said it is important to understand the
Chinese thought process because they are “much more nationalistic,
militaristic and aggressive” this time.
INDIA Updated: Aug 04, 2017 20:51 IST
Indo Asian News Service, New Delhi
Meghnad Desai says if a war is to break out , it will see the US and India
on one side and China on the other.
Meghnad Desai says if a war is to break out , i... 阅读全帖 |
|
B*D
发帖数: 5016 | 35 In its first flight attempt, the Boeing [NYSE: BA] X-51A WaveRider today su
ccessfully completed the longest supersonic combustion ramjet-powered flight
in history -- nearly three and a half minutes at a top speed of Mach 5.
The unmanned aerial vehicle was released from a U.S. Air Force B-52H bomber
off the southern California coast around 10 a.m. today. It flew autonomously
for more than 200 seconds, powered by its Pratt & Whitney Rocketdyne supers
onic combustion ramjet (scramjet) motor, as it |
|
G******e
发帖数: 9567 | 36 油门是俗称
“80年代初用化油器的车才有油门”的油门是直接控制进油量吗？好像柴油车才这样。
Beginning with the first engined vehicles, there has always been a need for
the driver to adjust engine output in order to control speed. In gasoline-
powered internal combustion engines, the accelerator pedal adjusts the
amount of air allowed into the combustion chamber, with the corresponding
supply of fuel being regulated by a carburetor or fuel injection. In early
designs, the pedal itself was directly tied to a butterfly valve, located
either in |
|
f**********n
发帖数: 3081 | 37 from Chevron technical service:
Thank you for your inquiry. It has been forwarded to us here at Chevron
Fuels Technical Service.
The ProGard and Techron products contain the same chemical additive.
There is but one grade of the Techron product, while there are four
grades of Pro-Gard. The Pro-Gard products are "Clean-up", "Fuel Injector
Cleaner", "Fuel Injector Plus Intake Valve Cleaner", and "Gas
Treatment".
The ProGard products give lower, less effective concentrations. These
lower-concentrati... 阅读全帖 |
|
k**********i
发帖数: 8706 | 38 不知道我的理解对不对
如果Seafoam这样的fuel/oil additive
加入油箱当中，主要起的作用是清洁fuel injector和combustion chambers
打开vacuum line(或者throttle gate)往里灌，主要的作用是清洁combustion chamber
s和throttle body
而且还可以加到机油engine oil里面，主要是清洁crankcase ? 是不是理论上用去污力
比较强的机油比如Mobil 1，就不用往机油里再加什么添加剂了？ |
|
a********s
发帖数: 575 | 39 Should we change oil every 3000 miles like Dad did?
It depends on conditions, so I have included an article from Consumer
Reports to help you decide.
Our 4-1/2-million-mile test with a fleet of New York City taxicabs turned
some conventional wisdom on its head.
Mobil commercial claims its oil "has been in more Indy 500 winners than any
other oil." Quaker State shows an engine with a terminally corroded inside
what they imply could happen when you use another oil. Exxon's commercial
for its Super... 阅读全帖 |
|
t**********3
发帖数: 12623 | 40 October 4, 2013
About the Model?S fire
By Elon Musk, Chairman, Product Architect & CEO
Earlier this week, a Model?S traveling at highway speed struck a large metal
object, causing significant damage to the vehicle. A curved section that
fell off a semi-trailer was recovered from the roadway near where the
accident occurred and, according to the road crew that was on the scene,
appears to be the culprit. The geometry of the object caused a powerful
lever action as it went under the car, punching ... 阅读全帖 |
|
D***0
发帖数: 5214 | 41 Chevy的官网上是说汽油机是做REx的啊。而且这个REx engine在volt上有84hp， i3那
个则小很多，只有35hp。Also
http://www.greencarreports.com/news/1094005_2014-bmw-i3-rex-vs-
Different philosophies
Although both Volt and i3 are classified as range-extended electric cars,
Chevy and BMW engineers came to their drafting boards with very different
marching orders from management.
The Volt has an EPA all-electric range of 38 miles, enough to cover about 80
percent of typical daily commutes, according to GM. The 84-hp range-
extender engin... 阅读全帖 |
|
a****2
发帖数: 3735 | 42 太精彩了！
This is a story of hubris, determination, emissions, an Impala, and, of
course, the amazing Soichiro Honda. It's a reminder that innovation can beat
strength, and that the most defining characteristic of any giant is not its
size, but it's susceptibility to cleverness.
I'm sort of amazed we've never officially talked about this here on Jalopnik
, because it's an amazing story. It's a story you may have heard before, but
it's absolutely worth repeating.
The most often cited version of the s... 阅读全帖 |
|
|
发帖数: 1 | 44 https://youtu.be/3P1JrTe24AY
It would be a mistake to count out the internal-combustion engine as
yesterday's technology, soon to expire in a puff of exhaust gas.
Electrification is coming, but meanwhile engineers have offered more
innovation for the venerable gas engine in the last three years than they
did in the previous 20. The result is 40 mpg on the highway, from four-
cylinder power plants with the same performance as older V-6s or even V-8s.
Achates Power typifies the new thinking. Its t... 阅读全帖 |
|
发帖数: 1 | 45 https://www.youtube.com/watch?v=3EscjWEQp4Y
Published on Jun 16, 2017
Toyota has developed two new automatic transmissions―the 8-speed Direct
Shift-8AT and the 10-speed Direct shift-10AT. For both, various measures
were taken to minimize energy loss and heighten transmission efficiency.
Gear tooth surfaces were processed using a new technique for a lower
coefficient of friction when the gears engage, and the configuration of the
friction material used inside the clutch was optimized to reduce cl... 阅读全帖 |
|
P*******5
发帖数: 248 | 46 Job Opening available at a Fortune 500 company
Job summary:
Applies sound knowledge of engineering principles and practices in one of
the following areas:
combustion/performance/emissions, cool/lube/fuel systems, air handling,
system integration, aftertreatment integration, cycle simulation, vehicle
system simulation, combustion system simulation, flow simulation, filtration
, or after treatment simulation.
Having research experience in catalysis will be a plus.
Email me your resume to:
s****6@g... 阅读全帖 |
|
m****1
发帖数: 736 | 47 http://www.nae.edu/Projects/MediaRoom/20095/130169/130172.aspx
New Members
Atwater Jr., Harry A., Howard Hughes Professor of Applied Physics and
Materials Science, California Institute of Technology, Pasadena. For
contributions to plasmonics.
Balakrishnan, Hari, professor of computer science, Massachusetts Institute
of Technology, Cambridge. For contributions to wired and wireless networks
and distributed systems.
Bardasz, Ewa A., president, ZUAL Associates Consulting, Mentor, Ohio. For
novel au... 阅读全帖 |
|
t***u
发帖数: 99 | 48 ☆─────────────────────────────────────☆
kfk (狂风<>忘情四百年，快意山水间) 于 (Sat Jan 5 21:21:57 2008) 提到:
3. 厨具，动词+名词
☆─────────────────────────────────────☆
ywahgliypa (Bless==Combustible) 于 (Sat Jan 5 21:22:16 2008) 提到:
插瓜丝的
3. 厨具，动词+名词
☆─────────────────────────────────────☆
kfk (狂风<>忘情四百年，快意山水间) 于 (Sat Jan 5 21:22:32 2008) 提到:
接近，但不是 :)
☆─────────────────────────────────────☆
ywahgliypa (Bless==Combustible) 于 (Sat Jan 5 21:22:36 2008) 提到:
不会又是淘瓤的吧。。
3. 厨具，动词+名词
☆──────────────── |
|
g*****k
发帖数: 1669 | 49 有兴趣的话，站内联系。
1)Combustion Engineer – San Diego, CA area – 5+ years related experience;
natural gas & propane combustion engineering background – full relocation
package available - $90K-110K+
2) Senior Medical Device/Optical-Mechanical OR Optical-Electronic
Manufacturing Engineers – Santa Barbara, CA area – 5+ years of experience;
develop-design tooling; SolidWorks; FMEA – relocation assistance available
- up to $115K |
|
