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经常同时用两个脑袋思考、解决各种复杂、简单的工作! 双子星+两个脑袋+想(做)许多事情=永远有新的追求 是我^_^人生
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2/5/2009

沟通中 怎样成为说话高手

有个故事讲,在酒足饭饱后,国王问大臣:你们说,世界上什么最难?大臣回答:“世界上说话最难。”大臣没有说出来的隐含的意思是:说话最难,尤其是和国王说话最难。在一次培训中,我也问在场的学员:“你们认为自己很会说话的,请举手。”35个培训学员中只有2-3个人举了手,还是犹犹豫豫的。是呀,凡是有一定工作经验的人都知道,说话容易,但是要把话说到位,非常困难。有的管理者讲:我招聘人的时候,看他能力的高低,就看他说话的水平的高低。说话多么重要!到底要怎么样才能说好话呢?这里有几个技巧和大家分享。

  1、说话的时机:成事不说、遂事不谏、既往不咎

  成事不说就是公司或领导已经决定的事情就不要评价,不要给出自己的想法和建议,无论你认为这些建议和想法对公司有多大的好处都要坚持不说的原则。但是在公司决定以前一定要把自己的想法说出来,这是你的职责,决定事情是公司领导的事,我们要认识清楚自己的职位和存在价值,不要给出超越职权的建议和想法,否则受到伤害的是你自己和公司。在生活中也是一样,你太太炒菜,四个菜中只有一个好吃,你吃饭的时候会说那三个不好吃,还是说那一个好吃呢?一定是说那一个好吃,因为你说那三个不好吃也没有用,再说好不好吃她和你一样清楚,为什么要说呢?工作中,这样的事情也经常有,总部任命了一个分公司经理,你自认为对他比较了解,他一定会把分公司搞垮。这个时候你要说吗?如果你说了,难道就能改变总部的决定吗?如果改变了,总部的权威何在!说了,反而增加了总部对你的看法:这个小子,总是这么窜,就你厉害,我们都是傻瓜,等着瞧,有你好受的。最后受害的是你自己。所以说要在事前,而不是事情已经决定了以后。

  遂事不谏是说正在做的事情,也不要去劝谏。如果他是错的,就让他错到底,最后再来总结和检讨。对于企业来讲老板和经理每天都在做很多决策,有资料统计显示,最优秀的决策者也不能保证决策的准确性,正确的决策只占总决策的七成。我们都知道正确的决策要比没有决策要好,但是企业经常是没有决策或者是有错误的决策。如果比较有错误的决策和没有决策这两者的时候,就会出现争议。到底是有错误的决策好,还是没有决策好呢?我认为,没有决策会导致企业一盘散沙,没有主心骨,不知道自己发展的方向,是企业的内伤;有错误的决策可以使企业损失时间和金钱,是企业的外伤。相比较之下还是暂时损失金钱和时间,也比企业的内伤来得要好。所以我们看到企业中经常有这样的现象,基层的员工明明知道这事是错的,但是总部还是要求坚决贯彻执行,基层员工这时可以做的唯一事情就是,坚决执行错误的决定!而不是去说,去评论。基层知道事情是错误的,难道总部不知道吗?地球人都知道!但是如果不做,损失的就是总部的权威,如果做下去,只损失金钱和时间而已,以后的正确决策可以赚回来。

  既往不咎是已经发生的事情不要去追究。这是说我们要适度地追究责任。不是什么事情都要追究到最后的责任人,才罢休。有些小事情,过分地追究,可能伤害别人的面子和积极性,以后的事情就不好做了。前一段时间,我的一个朋友结婚,在新婚之夜,发现了新娘的一个秘密,到底是说,还是不说呢?已经是过去的事情了,追究还有什么意思呢?就假装不知道吧!这个原则是针对一些聪明人适用的,你不追究,对方也知道自己错了,双方都心知肚明。但是对于一些没有自知之明的人,还要经常敲打一下,要追究责任到人,否则对方不能得到提高

2、不同事情,不同说法

  好事情,用播新闻的方式。前一段时间,培训部外请了公司的一位兼职讲师。我旁听了他的课程,想学习一点东西。课程快结束的时候,我回到了办公室,对其他的同事说:“没有想到他的课程,这么好,想不到,真是想不到。有些人是天生适合做讲师。”过了一会,课程结束了,他走出了办公室,和大家聊天。突然问了我一句:“你觉得这个课程怎么样?提点建议,我也好有个提高。”我一下子没有反应过来,想要怎样说才能即不恭维又恰当。旁边的同事搭腔说:“他刚才说,没有想到你的课程讲得这么好。我们都要向你学习呀。”我们双目对视了一下,他脸上洋溢着幸福的笑容,从此我感觉他对我的态度好多了。这个故事就是我无意中用了好事情播新闻的方式。我们中国人不习惯赞美别人,把对别人的赞美埋在心底,总是通过批评别人来“帮助别人成长”,其实这个想法是错误的,赞美比批评带给别人的进步要大。别人有了好做法、想法就要赞美,要夸奖,只有这样才有完美的人际关系,才有以后成功的基础。

  坏事情,先说结果。先讲结果,这样就有了沟通的底线,剩下的时间就可以用来沟通怎样解决问题。就象下面的货运丢了货物的故事:

  分公司货运到外地,丢失了货物,销售代表小王向经理做汇报。

  “经理呀,出事了。今天早上我去拜访客户,一到就听客户说丢货了。包被打开了,我想可能是被客车司机搞坏了,这里已经报警了,我们在现场取证……”

  “先别说那么多,告诉我到底损失了多少!”经理生气地说。

  无论这个事情最后的处理结果怎么样,经理对小王已经有了不好的印象。感觉他办事不牢靠,办事能力不强。

  3、试探性的说话:放话出去

  很多时候说话不是要表明什么观点,而是要表明自己的态度,或者试探别人的态度。这样的说话技巧是“放话”。

  在政界这个办法用的很多,经常是召开新闻发布会的方式,来表明自己的态度和试探别人的态度。震惊世界的911事件后,布什发表了一则声明来试探世界各国的反应和态度。第一个站出来的是俄罗斯,然后是英国、法国、中国等,先后表达了自己的立场。这样美国就全面了解了世界的想法,为下一步的行动打下了基础,这就是放话技巧。

企业中不可能召开新闻发布会来试探员工的反应,采取的可能是另外的方式。

  老张开了一家销售代理公司,初期厂家支持很大,业务发展非常迅速,于是老张大规模地扩张。不久公司的资金出现了问题,运作费用太大,厂家看到了这种情况,也采取观望的态度。于是你决定降低运作费用,变粗放管理为精细管理,争取厂家的支持和长远的发展。老张的目标是打算降低50%的费用。但是老张在犹豫,降低50%的费用是很难的,如果做不到会影响到自己的威信,老张在犹豫,到底要怎么办呢?

  不久从老张秘书那里传来了一个小道消息(小道消息总是最有魅力的)。由于公司的运营成本过高,老总考虑要裁员50%,以渡过难关,裁员的名单正在草拟中。

  消息传出,人人自危,都在想会不会是我?我最近表现怎么样?还有什么方面做得不好,很多人开始在老总面前表现自己,更有人找老总谈心、表白忠诚。

  又过了几天,有传闻。老总考虑,裁员影响太大,将严重影响公司的形象和正常的业务,不裁员50%了,决定减薪50%。于是每个人都在算计自己的薪水,控制自己的开支,公司的士气一片低落,甚至有人开始找工作。

  突然有一天老总召开了全体员工的大会,会上老总严肃地讲:“最近公司有两种很离谱的传闻,一种说我们公司要裁员50%,另外一种说我们公司要减薪50%。也不知道这种消息是从那里传出来的,我们是一家正规的公司,我们有正常的信息渠道,怎么能允许小道消息传播!我们一定要严厉查处相关人员,我们公司决不允许这种风气存在!我们是以人为本的公司,员工是我们生存和发展的基础。企业发展了,员工才能发展。员工满意了,企业才满意。对我们来讲员工是我们最大的财富!我现在郑重宣布,我们即不裁员也不减薪。”大家集体起立鼓掌,非常庆幸能摆脱这种厄运。

  “但是大家不要高兴的太早,我们的费用确实很大,如果我们不控制自己的费用,我们只有死路一条。一方面厂家对我们的信心将打折扣,另一方面我们没有了利润,怎么生存?只有死路一条,一定是这样的。我们只有唯一的办法,就是严格控制费用。所以从明天开始,我宣布减少公司费用50%,具体计划财务部已经做出来了,大家要严格执行。”全体员工集体起立,再次鼓掌,甚至有些员工流露出感激的泪水。

  这个例子是比较极端,小道消息的来源,我们也不要追究。但是要掌握这种方法,有的时候要通过放话来试探对方的反应,这样做出的决策才适当,才能显示你的英明决策和英雄气概。

  4、不同的人说不同的话

  所谓不同的人说不同的话,用老业务员的说法就是:见人说人话,见鬼说鬼话,不人不鬼说胡话。我理解这个说法就是讲,销售代表要有广博的知识和准确的识人能力,针对不同的客户用不同的方式来对待。

如果遇到客户象“鬼”,就用“鬼”的方式来对待他。下面的例子就是,销售代表小张和客户王老板沟通渠道奖励的事情。

  小张:“你小子最近忙什么?好久不见,也不给我电话。”

  王老板:“你小子怎么不给我电话?我整天帮你卖货,我是为你打工,你要知道。你很滋润,和老婆享福,也不关心贫下中农的死活。嘿。。”

  小张:“谈正经的,我们公司最近要做一个渠道奖励。”

  王老板:“快点,有话快说,有屁快放。我这里忙。”

  小上:“你小子急什么?是这样的……”

  如果遇到客户象“人”,就用“人”的方式来对待他。

  小张:“王总,您好。我是小张。”

  王老板:“你好,最近忙吗?很久不见,最近有什么新政策?”

  小张:“公司最近出来了一个渠道奖励计划,要和您谈谈。”

  王老板:“还要你多关照呀,具体怎么操作呢?”

  小张:“是这样的……”

  如果客户是一个绅士,就要用绅士的方式来对待。如果客户是“流氓”,销售代表也要变成“流氓”,只有这样才能沟通到位。

  有经验的人都知道,针对不同的对象、不同的事情、在不同的时机,说话的方式不一样。很多沟通技巧都要综合运用,比如要先听后说,要以对方为中心等,书上介绍的沟通技巧也有很多,但是我们每一个人的背景不同、经验不同,因此对沟通技巧的体会和掌握也不同。沟通技巧是实践经验的总结,需要一辈子去学习、体验、训练,在任何时候,心中要有主心骨:沟通中,沟是手段,通是目的。

4/11/2008

Bill Gates: the exit interview

Bill Gates: the exit interview

by Ryan Block, posted Jan 7th 2008 at 7:34PM

We've been fortunate enough to sit down with Sir Bill a number of times over the years -- and even been lucky enough to call him a fan. While we're certainly hoping this won't be our last run-in, we couldn't help but feel a little sentimental knowing that chances are the next time we see him, he'll no longer be in charge of Microsoft. This time around we talked a little about his historic 2007 sit-down with Steve Jobs, his plans for the Bill & Melinda Gates foundation, and even a bit about what he'll be up to in his new part-time gig at Microsoft.

Thanks so much for meeting with us. I appreciate it. So I was at the keynote last night and I saw the video that you did. Being that you're looking for a job, I just wanted to let you know we're always hiring--

Excellent --

... looking for editors anytime. I know you've written some stuff for the Guardian recently--

Well I love your stuff.

You know where to find me.

Ok.

[Laughter]

So I was at D this year and obviously you and Jobs were at it as well. And you guys got up on stage together, I think that was -- besides being a really historic moment -- very emotional for a lot of people in the audience. I want to know what it was like for you personally. I think a lot of people were confused as to whether or it was truly bittersweet, or just bitter. I felt it was really bittersweet.

Oh, I like Steve. And I've always been extremely complimentary of the impact he's had on the industry. Part of it, in terms of that whole crowd though, is that the personal computer industry was started by people who were very young and there was a set of people who believed in it and all kind of grew up together. So Steve and I are virtually the same age -- he's a little bit older, he got into it about three years after we had done the original personal computer stuff -- and he was my sixteenth customer for the BASIC interpreter. I had done the Commodore six months before, if you remember that, I had done the TRS-80 eight months before, and then they needed the floating point basic. I came out and I actually worked more with Woz -- Steve wasn't a hands-on engineer involved in that thing -- because Woz had been trying to do his own BASIC but just couldn't get it done.

So we've always worked together on various things. When Steve did the Mac, that was our closest relationship. That was about thirty people at Microsoft, twenty people at Apple betting on moving the graphical interface into the mainstream. That was a phenomenal experience because we did the only 3rd party software that was on that machine the day that it shipped. And when they went 512 [kilobytes of memory], we did some stuff. They thought [Lotus] Jazz was going to the breakthrough product, but we showed them that Excel was the breakthrough product. So there's always been good back and forth. I am very sincere that Steve has unique skills that I just don't have at all and it's been phenomenal to see how he has been able to make a difference with what he's done.

So when you got up there, what was it like for you emotionally? I mean, Steve quoted the Beatles; it felt like there was just this bizarre camaraderie / rivalry that is almost inexplicable.

Oh absolutely. We had a chance -- I think Steve and I are the two luckiest people in the industry in terms of the center seat we've had, and the involvement we've have been able to have. And we know that it's been a special thing and where we work together it's helped the industry, and even when we've competed it has probably been good for the industry.

So I read this GQ article, the profile that I guess they did of you around the time the new Zunes launched, and it was funny because the one thing they really focused on was that when they spoke to you, you seemed really checked out. In your last few months of tenure at Microsoft -- what is that like? Are you really spending all of your time on the Foundation right now? Or, are you still really focused on the technology?

I am totally full time Microsoft. As hardcore as ever -- you can ask anybody at the company. But come July 1st that will change. Maybe even the month of June will be goofy, not because I'll be focused on other things, but because, it being the last month, they'll be some special things and people that I'll go around and talk to. But in terms of lots of meetings of making our search better, the next version of Office, the next version of Windows -- I'm working harder now than any time in the last decade.


Is there anything on the table that you feel like you never really got to see through or fully accomplish?

Well, the tablet is not mainstream. Reading off the screen is not mainstream. Getting your TV over the internet -- we talked here about how Mediaroom is up to a million users. But that's just on its way to mainstream, that's not mainstream yet. So when I think about all the different scenarios, there are some that we've have made a lot more progress than on than others. Productivity, for example, although there is still a lot to be done on that. Computing in the cloud is this whole new frontier of how you make software automatically manage the hardware resources, recover, and load balance -- there's some phenomenal things we are doing related to that, both for the consumer and business computing. So this is an amazing time. I believe that all these things will happen but it takes time. Just like the medical technology -- things I'll be working on in the future -- those will take more time than I'd like.

Speaking of productivity, I think that Microsoft has really, if anything, totally nailed productivity over the years and totally nailed business and the enterprise market -- and that's really been the backbone of Microsoft business. But do you ever feel like there has been any regrets about shortcomings in the consumer market? As in, not really focusing on the consumer front the way that Jobs and Apple does? Or do you feel like you have really covered all of those bases?

I think the key thing is the concept of the personal computer and the software industry. That's what we started in 1975 and the core of the company is that platform. There are third party applications that are on Windows to do consumer-like things -- I think as we get speech and touch and mainstream pen into them, you'll see a wave of those that are dramatically better. That's our key role. Yes, Microsoft itself will do photos and music and all that, but the thing that has always differentiated our platform is the breadth of third party solutions. The hardware variety and that software applications variety. And we need new frontiers, of which I think natural interface and service-connections (that I talked about last night) -- those are going to enable these new things. So we are proud of the games work that people are doing on Windows but these breakthroughs can take that to the new level. I think that emphasis on third parties is something we've always done better than anyone else and hopefully it will hold us in a good position.

On the Windows side. One hundred million licenses, obviously that's an enormous amount. But I think in the last few months, especially within from media and the blogosphere and all of these different places, Vista specifically is getting hit really hard with a lot of negative PR -- a pretty big backlash from users who are downgrading to XP. Or at least a lot of people talking about downgrading. Do you feel like right now you are leaving under a cloud? That the company's core product not meeting consumer expectations?

I wouldn't say that. Any version of Windows is going to have lots of great new things that people use and things that are tough. With Vista, a lot of it's the transition from XP to Vista. Did we get the device drivers ready in the right way and time? Did we make it easy to do the upgrades as well as we should? When people get up and running on Vista they are basically quite happy. Not perfect -- but quite happy. It is that transition where we definitely need to get a better job up on that piece.

Now, in time, more of those drivers are becoming available. It is definitely a product where we look back and say, okay, a lot of good things but we are going to change the things where it just didn't become trivial to step up to the new version. That's always been a hard with Windows and we're looking at some of those challenges and why we didn't think they'd be as hard as they were -- and making sure that we do better at it. The feedback is important to us, but it is a product that has lots of good features. I encourage people to use it! We are proud of the features in there!

Well, of course! But are you personally fully satisfied with it?

I'm never fully satisfied with any Microsoft product.

Like the saying, "Software is never complete, only abandoned"?

There are always the features that I wanted to get in, or the things that I wish were a little more polished. The people who are good in these companies are really sort of ridiculously demanding people. They have to sort of know when to back off so that thing can eventually ship. But I look at any product -- and I'm better at Microsoft products -- and say what I wished what was better about the product.

In terms of the Foundation [which focuses partly using technology to enhance health care in developing nations], is it your intention to run that as you would a software company, or as you would a technology company?

Of course not. The nature of the problem is very different. I do not think technology companies are not all of one ilk either. Here at the foundation you have researchers in academia, great scientists in drug companies, you've got rich-world governments, poor-world governments, non-profit organizations, you've got to activate the public. The biggest part of the Foundation is solving twenty diseases. Malaria, AIDS, TB -- some diseases, because they are only in the poorest countries, rich people have never even heard of, like visceral leishmaniasis. In the top ten, -- but not broad awareness.

So the way we are going to orchestrate more energy and more resources, where we'll get a lot more progress where there is some market failure -- there is no market incentive driving these things -- that is going to require invention. And I wouldn't enjoy it if it wasn't at very early stage. And I am going to have to learn lots of things going back. I've got a great library of science, biology type things. The second half of the year I will spend lots of the year boning up on them.


So, foundation is in place and you've got this amazing, gargantuan grant from Buffet. What's the first plan? What is your first year going to look like there, and what do you hope to get accomplished in this first twelve months?

Well I've been part time on the Foundation and there is great full-time people there including Patty Stonesifer (the CEO), and my wife spends time. So I wouldn't say it's a huge discontinuity. We are going from $1.5 billion in grants a year in 2006 to $3 billion in 2009. So we are on a ramp, which means we are more ambitious. As we make breakthroughs, like new vaccines, then you actually need more money to get the manufacturer to fund the delivery systems. But fortunately the public's awareness of these things have gone up somewhat. The Global Fund and the work that Bono has done together with us has started to get a little bit of consensus about what needs to be done.

So I'm going to be reaching out to business leaders who I think can get their companies more involved and using their expertise, and hopefully my voice will help with that. I'll be talking with other philanthrophists telling them about how much fun I'm having doing it and suggesting that I'd love to see if we can get them involved. So there are some things that I think I'd bring to it that my [full-time position at the Foundation] will let me do that haven't been done. But the goal of the Foundation in terms of making the health of the poorest two billion as good as the richest two billion -- that has been there from the beginning and I'm just really doing things to accelerate it.

One last question: what kinds of pet technology products do you think you'll be keeping at Microsoft? You've got to have your fingers in the pie a little bit!

I love natural user interface and particularly the research groups to do that. I want to stay involved with that and make sure that when it's time to really put these things in the mainstream that Microsoft is jumping on it and taking that big risk. Search is obviously a huge thing for us that we put about a brilliant people on. Right now -- people don't know -- can do something really differentiated that could be fun to help drive that piece forward? Steve [Ballmer] will pick; my non-Microsoft time I'll be thinking about software for health systems and education. So I will probably be over at Microsoft seeing where their breakthroughs can help in those areas. But the day of the week that I'll be at Microsoft will be probably three projects, I'd guess.

Thank you so much for meeting with us.

You bet! Good talking to you.

Good luck!

5/23/2007

XML/XSLT/XSL-FO

      可扩展样式表语言(xsl)由w3c提出。
      xsl 为一种格式化语言,用於xml文檔的格式化或者表示過程。(定義如何顯示數據)
      xslt 為一種轉換語言,提供了一套規則,把xml數據轉換為另一種xml文檔、html文檔或其它文本格式。可移植的文檔格式(典型的:PDF)。
      xpath 為識別和尋址xml數據提供正規的語法。儘管xpath是獨立于xslt的語言,但xslt對xpath卻有核心的依賴,xslt置標規則建立在xpath結構基礎上。
       xsl-fo定義因該如何顯示數據。xslt用於將xml文檔轉換為使用xsl-fo格式化的新詞匯,xsl-fo格式化模型比css更爲複雜。例如:xsl-fo支持頁邊註解、交叉引用頁碼和注腳,功能上看起來對web作用不是很大,但如將一個大型文檔(或一本書)放到web上 用相同的xml數據通過不同的轉換和格式化文檔進行打印,作用就會體現出來了!
      xslt通常用來將xml文檔轉換為html,目的是可以在網絡瀏覽器中進行顯示。html比xml具有更好的向後兼容性,在xml中描述和存儲數據,在html中顯示數據。也就是說不論你是用哪個瀏覽器,所看到的内容是相同的。
     
                                     
 
    
3/14/2006

百米加减档

百米加减档中几个技术问题-----写出来和大家共同探讨

问题一:以前一直认为需要将汽车加速到一定的时速才能换档,所以每次换档我都会踩着油门提速,认为速度到了才换档,速度不够不敢换档。然而很多书上给出的档位于车速的对应关系是错误的。而且我问过教练和我的同事,车速多少时可以换档,他们的回答基本相同:不是依据车速来换档。特别是在做百米加减档时。

问题二:在前面教我的教练不让我猛踩油门,但练习百米加减档时没有告诉我应该将油门踩到底,所以我一直不敢用力踩油门,为了提速只能延长踩油门的时间,结果很难完成百米加减档。

问题三:压离合,汽车一档起步时不能马上松开离合要压在半离合状态等车走稳在完全抬起离合,从一档换二档时我也是要压离合,延长了换档时间。其实从起步以后基本上不用压离合了,可以比较快的抬起离合,前提就是一定要给足油门。我的同事也告诉过我,如果油门给的大离合就可以抬得快。

问题四:就是换档的动作了。包括手的动作和脚的动作。只要做到快速,准确,连贯就可以了。

把百米加减档的过程简单的叙述一下:

第一:起步的时候当你放下手刹汽车走起来后就应该加大油门,这时你的左脚可能还压着离合,加大油门以后就可以迅速抬起左脚,将离合抬到顶,这时你的右脚继续踩着油门。

第二:离合抬到顶之后左脚迅速踩下离合器到底同时放松油门,右手将变速杆从一档换到二档,接着抬左脚踩右脚(提示:右脚踩油门要用力),准备换三档。抬左脚时不要猛抬以步行的速度自然起就可。记住从一档换二档开始,以后左脚的动作都是迅速将离合踩到底,等右手将变速杆推到位后即自然抬起,在左脚抬起的同时右脚要用力踩下油门。左右脚的配合和手的动作要协调。

第三,第四,第五重复第二的动作。在你作加档的动作时不用考虑车速,汽车的速度肯定可以保证你加到五档不会出现剧烈的抖动。要点就是首先保证给足油门,每次换档完成之后果断的做下一个换档动作,中间不要停顿。减档时就容易多了右脚不用做动作,左脚踩三次,抬三次就把档位减下来了。

3/12/2006

车速和挡位的关系

车的速度(包括加速度)与变速箱挡位是没有直接的关系的,并不是说你把车挂五挡车就会跑一个五挡的速度;而是与发动机的转速有直接的关系,也就是说跟你脚下的油门有着直接的关系,一般说来,在一定范围内,发动机转速越高,它输出的功率(动力)就越大、扭矩就越大,相应的车速就会越来越快。功率的极限数值决定车速最高能跑多快,而扭矩的最高峰值决定车的加速性能最高有多强。值的注意的是,这两个极限是随着发动机转速的提升,分别达到某一个转速值时出现的,这就是我们常看到的“功率:XXX千瓦--5500转/分;扭矩:XXX牛*米--4200转/分”,一旦超过这个转速,发动机转速达到更高的话,拿上边的数值为例,假如发动机转速超过4200转以后,你会感觉车辆的加速性逐渐降低,就是速度的提升越来越慢;发动机转速继续上升超过5500转,基本上这时车辆的速度就不会再有所提升了,即使发动机转速更高,车速也不会有相应的提升。但通常情况下这种极限情况不会发生,高档轿车一般在车速250公里时电脑就会自动截油(别克是190公里,各车型不同)。
  
  接着说换挡,如果你能把上面的东西搞明白,那接下来就好说了。你开一部车,先是挂一挡起步,这时发动机转速迅速上升,如果你一直踩着油门就会发现,转速表指针指向6000转,发动机发出刺耳的声音,而车速也不会有更大的提升(事实上,一般的中低档国产车转速超过4000转时,发动机的声音就非常难听了)。这时你就要换2挡,你会发现转速表的指针回落到大约2000-3000转,继续加油,车速提升,发动机转速也迅速提升,换3挡,依次类推。你会发现,你换挡并不是为了“提速”,而是为了使发动机的转速保持在一个比较合适的水平上,而对于我们一般常见的轿车来说,这个比较适合的水平是2000-3500转(或者是上边例子里那个4200转)之间,在这个转速区间是扭矩输出最好的一个阶段,也就是加速度最快的一个阶段。当你换到5挡,并且令发动机转速保持在这一区间内,车速基本上在100-180之间(因车而异)。所以,通常高速路上的超车只要深踩油门就行,因为发动机正处于加速性最好的阶段。
  
  但在市区开车,很难将转速冲到2000转以上,通常就是挂5挡,转速1800转左右速度巡航,车速是80-100,在这时如果你想迅速超越前车再占回原有车道,就需要在很短的时间内把车速提高到120-140,但这时因为发动机没有达到扭矩输出的最佳点,所以无法提供你所需要的加速度,你就必须降一挡,将转速拉高,使发动机达到扭矩输出最高峰,这时的加速度就可以满足你超车的需要了。再把上边这个过程反着做一遍,在转速2000转时,从5挡降到4挡,松开离合,你会感觉车身猛地挫动一下(如果你在松离合前轰一脚油门,这种情况不会出现),但转速将迅速提高到3500转左右,这时你再加油,就会感觉到车速明显提升,待你超过前车后再挂上5挡继续巡航。同样,4挡降到3挡超车也是经常会出现的。
  
  最后回到你的问题上,加挡后,发动机转速迅速降低,如果你在4挡时冲速不足,甚至你加5挡后发动机转速会低于1500转,这时你根本得不到任何加速度。但还有一种情况是你用低挡超车,转速用尽(上例中超过5500转)但也无法超越前车,那你就只有加挡,假如根据上例来说,你在转速超过4200转时就该加挡了。
  
  开车最重要的是自己慢慢体会,什么时候该超车,什么时候不该超车......但一定记住一点,安全第一,技术高低并不只体现于你超越了多少辆车,而在于你是否能在最短的时间内安全抵达你的目的地。
2/15/2006

学车记(三)

       2006-2-13 今日开始学倒库,倒库确实比在路上行驶容易得多。首先 倒库只需将档位挂为“R”,半踩离合就可以倒车。倒车必须要有很好的方向感 还有方向盘旋转的度。方向盘就如船上的舵,旋转的方向就是看它。
2/12/2006

學車記(二)

      因爲前天新手第一次駕車毛病太多,今天教練開設理論課程,講來講去就是兩點 起步 停車 的步驟不過我也沒有偷懶,借了同期學員的駕駛理論考試書背了幾百到選擇題。
      上午教晚理論課,教練說下午可以不用來了。什麽嘛!明明是要上全天的 哪有說放假就放假 可是交了學費的啊
      下午我還是去了,是另外一位教練  我上了他的車。今兒下午學員少 車上才坐了3個(加上我),駕駛的次數可以多些,總結前天的經驗 今天跑了幾次明顯有好轉 還有一點就是有旅遊鞋換了雙皮鞋,一下子就不一樣了,首先右腳接觸油門可以感覺得到,旅遊鞋底較厚根本感覺不到,第一次駕駛轟的一下此踩到底了 被教練訓了一頓 真不好受  :(
      學車要有悟性 同樣也要具備相關的原理知識。