Tuesday, April 2, 2013

More about the Internal Combustion Engine

The main purpose of the internal combustion engine is to convert chemical energy from fuel source into mechanical energy that can then be used to move the car from, let's say, point A to point B. Yet, the internal combustion engine was not developed in the blink of an eye. In fact it took a bit of time for inventors to first develop the internal combustion engine and it took them a bit more of time to refine it. Even today, the internal combustion engine is still going through new improvements.


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Before the internal combustion came to be, the main type of engine used was the external combustion engine, in which water was interposed between the combustion gases produced while igniting fuel and the piston cylinder mechanism. It was not until the 1860s when the first internal combustion engines came to exist, at first, for commercial use. In these engines, a mixture of was and air was drawn inside the cylinder and then the mixture was ignited. But as it can be expected, these first machines were very far a way from being efficient. The efficiency of these machines was not able to overcome the 10 percent mark throughout this time.

Soon after, however, new individuals came into the picture and through a process of trial and error and intensive thought, developed internal combustion engines that had higher efficiency. One of these first refined internal combustion engines was developed by Nicolaus Otto, which used both the pressure from the resulting combustion of the air and fuel mixture and atmospheric in its processes. Soon, however, Otto developed an even more refined process which would be known as the four stroke process.


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In a four stroke internal engine, the firs step is an intake stroke, followed by a compression stroke before ignition, which then leads to a power stroke where power is delivered to the crankshaft, and ending on an exhaust stroke. Thus, thanks to the work of Otto, new inventors came to the thinking table and started working on new and more efficient machines. 

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