II. MECHANICAL STRUCTURE
Both being internal combustion type diesel and gasoline engines can be considered as similar. Simply, both engines converts chemical energy into mechanical one by burning fuel. In combustion engines the combustion (explosion of fuel) occurs at combustion chamber with , generally, help of oxidizer (air, another fluid, etc.). The output, high heat and pressure of the burning process is transfered to other components of the engines which expose pressure as a mechanical energy. Some of these parts can be examplified as turbines, nozzles, pistons (Britannica, 2012). These two types of engines basically differs in the way of burning the fuel and production of chemical energy. First, gasoline engines will be introduced in general aspects. 2.1. Gasoline Engines
Both of the engines oxides fuel and burns it in a chamber. The obtained pressure, and therefore, force is used to reveal dynamic action. In a ordinary gasoline engine carburetor, is the first member that mixes air (oxidizer) and fuel in a required proportion. In gasoline engine mixture is injected in to chamber by fuel injector. Nowadays these electronic devices determines the amount and proportion of the mixture due to some parameters like; machine speed, outdoor temperature, etc. In conventional gasoline engine fuel was injected from multipile gaps into cylinder port, consequently a decrease might occur in the effectiveness of explosion. But in modern ones, the fuel is injected directly into cylinder combustion chamber. This type of gasoline engines called as “Gasoline Direct Injection Engines”. Inside the chamber (cylinder) spark plug ignites the mixture. The revealed pressure pushes the piston toward crankshaft which alters lineer oscillation of piston into the rotary motion. 2.2. Diesel Engines
The working principle of diesel engine is same with gasoline one. The production of mechanical energy relies on same idea that includes burning of fuel and producing force to push...
Please join StudyMode to read the full document