C6.4 Diesel Used Engine Assembly For Excavator E320D E324D Original
Specification
| Car name: Engine Assy | Model Number: C6.4 |
| Cylinder stroke: 130 | Cylinder diameter: 102 |
| Application: Excavator | valve: 24 valve |
| Cooling: Water cooling | Injection: Electric |
Description
How diesel engines work
When a gas is compressed, its temperature rises (see the combined
gas law); a diesel engine uses this property to ignite the fuel.
Air is drawn into the cylinder of a diesel engine and compressed by
the rising piston at a much higher compression ratio than for a
spark-ignition engine, up to 25:1. The air temperature reaches
700–900, or 1300–1650 °F.
At the top of the piston Stroke diesel fuel is injected into the
combustion chamber at high pressure, through an atomising nozzle,
mixing with the hot, high-pressure air. The mixture ignites and
burns very rapidly. This contained explosion causes the gas in the
chamber to heat up rapidly, which increases its pressure, which in
turn forces the piston downwards.
The connecting rod transmits this motion to the crankshaft, which
is forced to turn, delivering rotary power at the output end of the
crankshaft. Scavenging (pushing the exhausted gas-charge out of the
cylinder, and drawing in a fresh draught of air) of the engine is
done either by ports or valves.
To fully realize the capabilities of a diesel engine, use of a
turbocharger to compress the intake air is necessary; use of an
aftercooler/intercooler to cool the intake air after compression by
the turbocharger further increases efficiency.
In very cold weather, diesel fuel thickens and increases in
viscosity and forms wax crystals or a gel. This can make it
difficult for the fuel injector to get fuel into the cylinder in an
effective manner, making cold weather starts difficult at times,
though recent advances in diesel fuel technology have made these
difficulties rare.
A commonly applied advance is to electrically heat the fuel filter
and fuel lines. Other engines utilize small electric heaters called
glow plugs inside the cylinder to warm the cylinders prior to
starting.
