Diesel generator set is a type of internal combustion generator set and is currently one of the most widely used power generation equipment in the world. It mainly consists of diesel engine, AC synchronous generator, control box (screen), coupling, and common base components. Currently, it is widely used as an emergency backup power source in finance, hospitals, commerce, factories, enterprises, and national defense. Below, the Yangzhou Fukansi editor will take the Cummins diesel engine as an example to introduce the 8 major components.

1、 Working principle of diesel engine

The basic working principle of Cummins diesel engine is to use compression ignition to burn fuel inside the cylinder. The high-temperature and high-pressure gas working fluid expands in the cylinder to push the piston to make reciprocating motion. Then, through the piston connecting rod crankshaft, the reciprocating motion is converted into the rotary motion of the crankshaft, thereby driving the working machinery.

2、 Diesel engine components

1. Cylinder body

The primary component of modern diesel engines is the cylinder block, which contains all the parts related to the combustion process. Each cylinder has an open space where the combustion process takes place.

2. Crankshaft

The crankshaft converts the reciprocating linear motion generated by combustion into rotational motion.

3. Connecting rod

The connecting rod connects the crankshaft and piston, transmitting the power generated by combustion.

4. Piston

Each connecting rod is connected to a piston at the top. The piston forms the bottom of the combustion chamber, and during engine operation, the piston moves back and forth in the cylinder

5. Cylinder head

The cylinder head is installed on the upper part of the cylinder block, sealing the cylinder from the top and forming the combustion chamber. During the internal combustion process, the cylinder head needs to withstand significant thermal and mechanical loads. Depending on the design, some engines use a single cylinder head to cover all combustion chambers, while others have a separate cylinder head installed on each combustion chamber.

6. Valve

In a closed cylinder, the engine needs to exhaust combustion gases through exhaust during operation and can also draw in fresh air through intake. Usually, each cylinder will have 2 intake valves and 2 exhaust valves.

7. Fuel injector

The injector is responsible for injecting fuel into the cylinder and is the most complex part of the combustion system. The fuel injector needs to inject a precise amount of fuel into the combustion chamber at the top of the cylinder with precise injection timing.

8. Camshaft

Most engines still rely on mechanical systems to open and close valves, and some engines still control fuel injection through mechanical transmission (non electronic control). The timing of valve opening and closing events is controlled by the phase angle between the camshaft and crankshaft.

The exquisite cooperation between the various components of the diesel engine and the crankshaft ensures that the four cylinders of the engine are on different strokes for smooth operation. Through optimization, engines with four or more cylinders can achieve better smoothness of operation while delivering high power output. Most modern engines adopt even cylinder designs after balancing various performance requirements. Now come to Yangzhou Fukangsi to purchase diesel generator sets, not only can you enjoy the manufacturer's direct sales at a low price, but you can also get a thousand yuan maintenance red envelope and free filter cartridges. Click to purchase>>