49179-02820 S6K Second Hand Turbo For Excavator E320B E320C E320D Metal Material

S6K Second Hand Turbo For Excavator E320B E320C E320D 49179 - 02820 Spare parts

Specification

Description

What is a Turbocharger?

A turbocharger is a component comprised of a turbine and air compressor which is used to harness the waste exhaust gases emitted from an engine. It forces more air into the cylinders, helping the engine to produce more power.

How do they work?

Turbos are composed of a shaft with a turbine wheel on one end and a compressor wheel on the other. These are covered by a snail-shaped housing featuring an inlet port, which the wasted exhaust gases enter at a high pressure. As the air passes through the turbine, the turbine spins and the compressor turns with it, drawing in vast quantities of air which are compressed and passed out of the outlet port.

HOW A TURBOCHARGER WORKS

A significant difference between a turbocharged diesel engine and a traditional naturally aspirated gasoline engine is the air entering a diesel engine is compressed before the fuel is injected. This is where the turbocharger is critical to the power output and efficiency of the diesel engine.

It is the job of the turbocharger to compress more air flowing into the engine’s cylinder. When air is compressed the oxygen molecules are packed closer together. This increase in air means that more fuel can be added for the same size naturally aspirated engine. This then generates increased mechanical power and overall efficiency improvement of the combustion process. Therefore, the engine size can be reduced for a turbocharged engine leading to better packaging, weight saving benefits and overall improved fuel economy.

A pipe feeds this compressed air back into the cylinders via an intercooler, which cools the air before it reaches the cylinders. As turbos run at such high speeds (up to 250,000 RPM), they typically have an oil cooling system to make sure they don’t run too hot. Most systems also contain a valve known as a ‘wastegate’, which is used to divert excess gas away from the turbocharger when the engine produces too much boost, preventing damage to the turbine by limiting its rotational speed.