dieseltekniikkaa

Dieseltekniikkaa refers to the technology and engineering principles behind diesel engines. These engines are a type of internal combustion engine that operates on the diesel cycle, named after its inventor Rudolf Diesel. The key characteristic of a diesel engine is its method of ignition: instead of using a spark plug like a gasoline engine, diesel engines rely on the heat generated by the compression of air within the cylinder to ignite the fuel.

The diesel cycle begins with the intake stroke, where only air is drawn into the cylinder. During the compression stroke, this air is compressed to a very high pressure and temperature. As the piston reaches the top of its stroke, diesel fuel is injected into the hot, compressed air. The intense heat causes the fuel to auto-ignite, initiating the power stroke. The expanding gases push the piston down, generating mechanical energy. Finally, the exhaust stroke expels the burnt gases from the cylinder.

Diesel engines are known for their high thermal efficiency, durability, and torque. They are commonly used in heavy-duty applications such as trucks, buses, locomotives, agricultural machinery, and marine vessels, as well as in some passenger cars. Modern dieseltekniikkaa incorporates advanced fuel injection systems, turbocharging, and emission control technologies like diesel particulate filters (DPFs) and selective catalytic reduction (SCR) to meet increasingly stringent environmental regulations. The efficiency and robustness of diesel engines continue to drive innovation in their design and application.