Introduction to Cummins Diesel Engine Structure and Working Principle 1

Cummins diesel generators are mainly composed of four major parts: the diesel engine, the generator, the controller, and accessories. Among them, the diesel engine is of great importance. However, many people are not very familiar with its principle and internal structure. For workers who use generators, this undoubtedly adds many problems and difficulties in later - stage use, maintenance, and upkeep. The editor of Dingbo Power has prepared a detailed introduction for you to help you quickly understand the diesel engine.

A Cummins diesel engine converts the thermal energy released by diesel combustion into mechanical energy by pushing the piston to move. The kinetic energy is then transmitted to the generator through the crank - connecting rod mechanism to generate electricity. The components of the diesel engine work in coordination with each other. It mainly consists of the valve train and intake - exhaust system, the engine block assembly and crank - connecting rod mechanism, the diesel engine starting device, the fuel supply and speed - governing system, the cooling system, and the lubrication system. The following is a detailed introduction:

(1) Diesel Engine Valve Train and Intake - Exhaust System

The diesel engine valve train is composed of two major parts: the valve group and the transmission group. The valve group consists of the intake valve, exhaust valve, valve guide, valve seat, and valve spring. The transmission group consists of the tappet, push rod, rocker arm, rocker shaft, camshaft, and timing gear. They work together to achieve intake and exhaust operations.

(2) Diesel Engine Block Assembly and Crank - Connecting Rod Mechanism

The diesel engine block assembly serves as the assembly base for various mechanisms and systems. Many parts of it are also components of the diesel engine's crank - connecting rod mechanism, valve train and intake - exhaust system, fuel supply and speed - governing system, lubrication system, and cooling system.

The diesel engine crank - connecting rod mechanism is the main moving part of the diesel engine, consisting of the piston, connecting rod, crankshaft, flywheel, and crankcase. When diesel burns inside the piston, the piston bears the pressure of gas expansion. The movement of the piston drives the connecting rod to make the crankshaft rotate, converting the reciprocating linear motion of the piston into the rotational motion of the crankshaft and outputting power externally to connect to the generator for power generation.

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