2012/09/25
下面是一篇我偶然看到的关于排气背压的文章，但我认为蛮有用的。也有利于你理解排气系统或类似的事物，比如加油排气等。
Backpressure: The myth and why it's wrong.
I. Introduction
One of the most misunderstood concepts in exhaust theory is backpressure. People love to talk about backpressure on message boards with no real understanding of what it is and what it's consequences are. I'm sure many of you have heard or read the phrase "Hondas need backpressure" when discussing exhaust upgrades. That phrase is in fact completely inaccurate and a wholly misguided notion.
II. Some basic exhaust theory
Your exhaust system is designed to evacuate gases from the combustion chamber quickly and efficently. Exhaust gases are not produced in a smooth stream; exhaust gases originate in pulses. A 4 cylinder motor will have 4 distinct pulses per complete engine cycle, a 6 cylinder has 6 pulses and so on. The more pulses that are produced, the more continuous the exhaust flow. Backpressure can be loosely defined as the resistance to positive flow - in this case, the resistance to positive flow of the exhaust stream.
这是在网上无意中看到一篇很专业细致的贴子。有兴趣的，可以看看。
首先，要区分“有回油”和“无回油”供油系统，因为两者的情况，是对喷油量控制有影响的。
“有回油”和“无回油”供油系统的功能特性区别：
1、有回油供油系统是“油路管内压力是变化的，而喷油嘴两端压力差恒定”；vacuum based。
2、无回油供油系统是“油路管内压力是恒定的，而喷油嘴两端压力差是变化的”。regulator based。
为什么要搞清楚上述区别？
广州风神汽车 与 东风日产（广州）的关系？
原来的风神汽车是不是就是现在的东风日产？（东风日产的股权结构怎样的？） 他们的历史沿革是什么？ 现在还存在风神汽车吗?如果存在，那么他们的公司及产品是怎么区分的？ 原来的风神汽车中好像有台湾裕隆汽车一部分部分的，但是在东风日产里好像是没有的，不知这里面是怎么个关系？ 另外谁知道台湾的裕隆日产合资公司中两者的股权比例是多少吗？ 台湾的裕隆公司与东风集团在原来的合资关系中还有联系吗？
2000年3月设立的、有台湾裕隆参与的风神汽车是东风日产乘用车的前身，是东风汽车尝试在沿海进行汽车生产布局的产物，当时的股权结构是：东风占60%，裕隆占40%，主要生产日产蓝鸟品牌的轿车。
这个公司仅存在了3年，但创造了中国汽车产业的一个神话：成立时注册资本仅1.3亿元，东风汽车投入的自有资金仅2300万元，但公司成立的第二个月即实现第一辆车下线，当年即赢利5000万元。此后，风神的表现更令人惊讶，2002年，风神成为全行业利润第6，占东风当年利润近一半，成为东风最重要的财源。
我的车子退牌后上了沪C，然后过户到了我老婆名下。
不过，虽然是这样，仍需要办理一下保险过户流程。
今天到浦建路1539号（浦建路/杜鹃路路口），办理了一下，蛮简单的。这里只有周一到周五才营业，周末不营业（据说过户这块业务全上海周末都没有营业的地点）。
(2009-5-9)
Kautex Maschinenbau GmbH has designed and is building the largest long stroke machine of its type, a Model KLS14-100D. This dual-station machine will be producing sixteen 3-layer containers at 85 mm center distance in each station.
This machine allows not only high cavitation, but also ease of changeover to a different article. Kautex will also be taking interested visitors at NPE2009 to a local medical supplier that has harnessed a conventional shuttle Model KCC20D line into a 'lights out' production cell. Resin pellets are fed in one end and 100% fully leak tested, weighed and capped hospital urinal containers boxed up and palletized are discharged on the other end. With the cost of energy rising, Kautex has developed a line of energy efficient extrusion systems that can achieve 30% higher output with 30% less energy. Kautex Maschinenbau GmbH is one of the global leaders in extrusion blow molding technology and generates annual sales of 70 million Euros.
