Who Invented Diesel Engine | Diesel Engine Working Principle


Diesel Engine 

A diesel engine is an internal combustion engine that uses the heat produced by compressing air in a closed space to generate ignition of the fuel. (Who Invented Diesel Engine) Thus it differs from spark-ignition engines in that they use spark-plugs to ignite a mixture of air and fuel. It is also called compression-ignition engine. The mechanical energy (kinetic energy) obtained from this is used in vehicles, generators and many other works. 


Who Invented Diesel Engine 

In 1892, “Rudolf Diesel” patented the internal combustion engine, and the diesel engine was named after him, although the first real engine was manufactured in 1895 AD. This engine was independently tested by Schozoter in Augsburg in 1897, and diesel engines were publicly demonstrated at the Munich Exhibition in 1898. 

In 1900, Diesel announced before the Paris Congress that the final form of the operating cycle it took after much experimentation was a four-stroke type of suction, pressing, expanding and developing from a single stroke sequence. The earlier diesel engines were air-injection engines and used very high pressure to deliver fuel to the engine’s cylinders. In 1910, James Mckechnic developed the solid injection system, in which a simple, high-pressure fuel-oil pump was used for injection. 



Diesel Engine Working Principle 

The diesel engine is based on the principle of expansion of gases under pressure. The gas is created when fuel ignites and burns inside the combustion chamber (cylinder). The rotating crankshaft converts thermal energy into mechanical energy. 

If the work cycle is performed in one revolution of the crankshaft, ie. For two-piston stroke, then such an engine is called two-stroke. In a four-stroke engine, a cycle consists of two crankshaft revolutions or four piston strokes and the following strokes: intake, compression, expansion (stroke) and exhaust. 


Diesel Engine Design 

Consider the design of a diesel engine on its main characters and systems. 

Who Invented Diesel Engine, Diesel Engine Working Principle

It is important to note that the operation of the engine is provided by the crank and gas distribution mechanisms, and the rest of the systems are aimed at maintaining the operation of these mechanisms. All engine components are assembled in one housing, which is the basis for their attachment.


Fuel System 

The engine fuel system is a component that has a significant impact on engine efficiency. The functionality of this system is to supply a certain amount of fuel at the right time under the required pressure and purify it. 

  • High Pressure Fuel Pump (TNHD)
  • Fuel Filter
  • Injector
  • Fuel Priming Pump

The fuel priming pump directs diesel fuel from the tank through the fuel filter (coarse and fine), then the high-pressure fuel pump and injectors inject fuel into the cylinders. 

Who Invented Diesel Engine, Diesel Engine Working Principle

Injection System

Distinguish between engines with direct (direct) and indirect injection. The direct method means that the fuel goes directly into the combustion chamber, where it is ignited. Indirect – indicates the supply of fuel to a separate chamber (prechamber), where self-ignition occurs, continuing in the main chamber.

The most modern injection system is Common Rail. This direct injection system is used in engines with electronic control systems.



[Who Invented Diesel Engine | Diesel Engine Working Principle] 


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