S6K Used Engine Assembly For Excavator E200B E320 Water Cooling
Specification
| Car name: Complete Engine | Model Number: S6K |
| Cylinder stroke: 130 | Cylinder diameter: 102 |
| Application: Excavator | valve: 12 valve |
| Cooling: Water cooling | Injection: Direction |
Description
A diesel engine is mainly classified into two types -
Indirect-Injection (IDI) & Direct-injection (DI). The
Direct-Injection diesel cycle was an earlier generation technology.
It later evolved into its successor & more advanced CRDi. Earlier
generation utility vehicles, trucks, buses & generators still
widely use the simple DI engines. Furthermore, sophisticated &
refined CRDi engines became very popular in the Sedans, MPVs, SUVs
and Luxury cars in the recent past.
The Six-Stroke diesel engine works on the following cycle:
1. Suction Stroke – With pistons moving downwards and the opening
of the inlet valve creates the suction of clean air into the
cylinders.
Diesel Suction Stroke
2. Compression – With the closing of Inlet valve the area above the
piston gets closed. The piston moves up resulting in compression of
the air in a confined space under higher compression-ratio.
Diesel Compression Stroke
Combustion Process - At this stage, the injector sprays the diesel
into the combustion chamber. The rise in temperature of the air
caused by its compression; results in instantaneous burning of
diesel with an explosion. This causes heat to release which
generates expanding forces known as power.
Diesel Engine Combustion
3. Power Stroke – Furthermore, these forces again push the pistons
downwards resulting in their reciprocating motion.
Diesel Power Stroke
4. Exhaust Stroke – On their way up, the pistons push the exhaust
gases above them thru’ the exhaust valve which opens during the
exhaust stroke.
Diesel Exhaust Stroke
This cycle repeats itself until the engine turns off, resulting in
the continuance of engine’s running.
Controlling the timing of the start of injection of fuel into the
pistons is key to minimising their emissions and maximising the
fuel economy (efficiency) or the engine. The exact timing of
starting this fuel injection into the cylinder is controlled
electronically in most of today's modern engines.
The timing is usually measured in units of crank angle of the
piston before Top Dead Center (TDC). For example, if the ECM/ECU
initiates fuel injection when the piston is 10 degrees before TDC,
the start of injection or "timing" is said to be 10 deg BTDC. The
optimal timing will depend on both the engine design as well as its
speed and load.
