Weichai Original 12M26D605E300NG Gas Generator Set

500kW High Power | Natural Gas / Biogas Dual-Fuel | Factory-Integrated Design

Product Overview

Power from Weichai

The Weichai 12M26D605E300NG gas generator set is a high-end solution designed for continuous industrial operation and commercial grid parallel applications. The unit features a factory-integrated design—the engine, alternator, and control system are all developed, tested, and manufactured by Weichai, eliminating compatibility issues common with assembled units.

With a stable 500kW power output and outstanding adaptability to various gas types such as natural gas and biogas, this set is widely used in livestock farm biogas power generation, wastewater treatment plants, natural gas peaking stations, and backup power for mining sites and factories. It is the ideal choice for customers who demand high reliability and low gas consumption.

Key Advantages

• Factory-Integrated, No Retrofitting – The complete set undergoes factory bench testing by Weichai, ensuring ample torque reserve and stable operation even under full load.

• Excellent Fuel Economy – Equipped with lean-burn technology and precise air-fuel ratio control, it achieves 5–8% lower gas consumption compared to similar models, significantly improving ROI.

• Adaptability to Low-Grade Gases – Optimized for low-calorific-value fuels; it performs reliably not only with pipeline natural gas but also with biogas (methane content 40–60%) from farms or distilleries.

• Intelligent Control System – Standard with Weichai’s original ECU and HMI intelligent control panel, supporting one-touch start/stop, remote monitoring, automatic parallel operation, and fault self-diagnosis.

Core Technical Specifications

Note: Technical parameters may vary slightly depending on configuration; refer to the factory nameplate for final specifications.

In-Depth Introduction

1. Power System: Weichai 12M26 Series Gas Engine

This generator set is powered by the mature 12M26 series gas engine from Weichai.

• High-Strength Block – Made of vermicular graphite cast iron, providing excellent strength, uniform heat dissipation, and resistance to knock specific to gas engines.

• Dedicated Pistons & Valves – Equipped with high-temperature-resistant, corrosion-resistant valve seat inserts and piston rings designed for gas combustion, significantly extending the overhaul interval under heavy load.

• Lean-Burn Technology – Precisely controls the excess air ratio for more complete combustion, reducing peak combustion temperature and thermal load, lowering NOx emissions, and extending spark plug and cylinder liner life.

2. Alternator & Control System

• High-Efficiency Alternator – Standard with a brushless alternator (Weichai original) featuring a permanent magnet generator (PMG) excitation system, offering excellent non-linear load capability. Even with motor starting or UPS loads, the voltage waveform distortion remains below 5%, ensuring safe operation of sensitive equipment.

• Full-Featured Intelligent Control –

  • Monitoring: Real-time display of over 50 parameters including voltage, current, frequency, coolant temperature, oil pressure, and gas pressure.

  • Protection: Automatic alarm and shutdown for overspeed, high temperature, low oil pressure, gas leakage, overcurrent, overload, etc.

  • Communication: Standard RS485 port with Modbus protocol support for seamless integration into a central SCADA system for unattended operation.

3. Air Intake, Exhaust & Gas System

• Flame Arrestor – The intake line is equipped with a flame arrestor, and the electrical system meets explosion-proof design standards to ensure safe operation with flammable gases like natural gas and biogas.

• Gas Mixer – Features a venturi-type mixer with low pressure drop, capable of handling fluctuations in gas supply pressure, especially when biogas pressure is unstable, maintaining stable air-fuel ratio.

Applications

🏭 Industrial Self-Generation
Suitable for steel, chemical, ceramic, and other energy-intensive industries, utilizing natural gas or industrial by-product gases in combined heat and power (CHP) systems to significantly reduce electricity costs.

🐄 Biogas Power Generation
Specifically designed for large-scale livestock farms, wastewater treatment plants, and landfills. Optimized for biogas (methane) containing impurities such as sulfur compounds, the set features corrosion-resistant components and a dedicated ignition system, turning waste gas into valuable electricity while qualifying for carbon reduction incentives.

🏛️ Public Facility Backup
Ideal as emergency or peak-shaving power for hotels, hospitals, data centers, and shopping malls, ensuring critical loads operate without interruption during utility outages.

Service & Support

• Factory Warranty – 1 year or 1000 hours (whichever comes first) factory warranty, with extension options for key components such as the cylinder block and crankshaft.

• Installation Guidance – Full technical support from foundation design and ventilation/exhaust planning to rigging and placement.

• Parts Availability – Genuine parts readily available through Weichai’s nationwide network of over 5,000 service points.

• Commissioning & Training – Free on-site commissioning by engineers and operator training until the customer is confident in routine inspection and maintenance.

📞 Contact Us

Inquire Now for a Customized Quotation
For real-time pricing, detailed dimensional drawings, or to arrange a factory visit, please contact our sales manager.

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