Car simplification: 1- what is car? P3

Posted by Wael A. Saad On Friday, 18 May 2012 7 comments
 
Any one is missing me? (o,O)     NO matter my girlfriend still with me, and as I remember we was talking about her kind Heart, sorry I mean her engine.

Car simplification
what is car? Part 3

We was talking at “Part 2” about, what is engine and how is simply working. Also, we discussed briefly how the fuel is entering the chamber, two more things we need to talk about the 1st is (how to ignite the fuel?) And the 2nd (how we start the engine?) so, let us start.

How we can ignite the fuel?

There are two basic methods to ignite the fuel into internal combustion engines:
               1-      Self Ignition. (called Diesel Engine)
               2-      Using ignition system. (Called Benzene Engine)

       In fact this is one of the main differences between Diesel and Benzene Engines. In addition to, power, speed, and size. But we will discuss the differences later.
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           * Based on pressure and temperature relations when we increase the pressure the temperature increases too. That’s why we use gasoline as a fuel for Diesel engine.
     

     * When the pressure of the gasoline increase, the gasoline will be fire at (about 250 deg. C) without any ignition spark. This temperature called (Self Ignition Temperature).
Ignition System with Distributor.
   



     * The benzene could not be self ignited, because it’s need about three times gasoline pressure to be self ignited which is extremely hard to be achieved (about 550 deg. C)
    


      * Spark-plug with spark Distributor is needed to firing the fuel at Benzene engines, with certain firing order. But some cars distributor-less or it electronically distributes the sparks to the spark-plugs.
   


Distributor-Less Ignition system
      * A spark is a highly voltage charge runs through a wire connected to the spark-plug.

     *As conclusion if u r using diesel engine, you don’t have ignition system. But if you have benzene engine you may have distributor or distributor-less ignition system.









thank's for howautoworks

But how the engine start, this will be our next part, Go  check part 4

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