How Does A Diesel Generator Works?
Do you know how a diesel generator works? Actually, the diesel generator operates through a sophisticated energy conversion process that transforms chemical energy into usable electrical power. In other words, this process involves two primary subsystems working in tandem: the diesel engine and the alternator.
Working Principle of Diesel Generators
- Energy Conversion Process
The operation follows a four-stage energy transformation: Chemical → Mechanical → Rotational → Electrical, explained in the following:
- Stage 1: Diesel Combustion (Chemical Energy)
Atmospheric air enters the cylinder → Then be compressed to 1/20 volume (raising the temperature to 500-700°C) → Fuel injector sprays atomized diesel → Spontaneous ignition under high pressure → Combustion gases expand forcefully. - Stage 2: Mechanical Conversion
Expanding gases drive the piston downward → Linear motion converted to rotation via connecting rod and crankshaft → Accordingly, the output shaft typically reaches 1,500/1,800 RPM (frequency-dependent). - Stage 3: Electro-magnetic Induction
The rotating shaft drives the alternator rotor → Then, the copper windings cut through the stator’s magnetic field → Generates alternating current (Faraday’s Law) → Raw AC output: 240-480V, frequency 50/60Hz. - Stage 4: Power Stabilization
Voltage regulator maintains ±2% output stability → At the same time, the protective relays monitor parameters → Final output meets ISO 8528 standards.
2. Core Components and Diesel Generator Functions
| Component | Function |
|---|---|
| Diesel Engine | Provides power (common brands: Cummins, Weichai, Yuchai) |
| Alternator | Converts mechanical energy into electrical energy (e.g., Stamford, Marathon) |
| Control System | Auto start/stop, voltage regulation, fault protection |
| Cooling System | Air-cooled/water-cooled to prevent overheating |
| Soundproof Silencer | Reduces operational noise |
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For more product knowledge and product data required, we suggest you contact us through email at info@fdkenergy.com, additionally, we provide swift replies and help within 12 hours.
