WOODWARD 8407-523

الوصف

The Woodward 8407-523 is a specific part number for a TecJet™ 110 Gaseous Fuel Metering Valve. This is an integrated, digitally-compensated control valve and actuator system designed for precise fuel flow regulation in larger natural gas and dual-fuel engines.

WOODWARD 8407-523: TecJet™ 110 Gaseous Fuel Metering Valve (Older Generation / Inactivated)

The Woodward 8407-523 is a sophisticated, all-in-one component that combines a fuel valve and its electronic actuator. It is part of the TecJet™ 110 series, which is designed for higher flow rates than the TecJet 52 series, and is known for its accuracy and responsiveness in managing gaseous fuel delivery to engines. This particular part number belongs to an older generation (likely non-RoHS compliant) of TecJet valves.

Product Overview

• Product Type: Gaseous Fuel Metering Valve / Integrated Valve and Actuator
• Manufacturer: Woodward
• Series: TecJet™ 110 (The “110” signifies a larger valve size, capable of higher fuel flow than the TecJet 52 models).
• Function: Precisely controls the mass flow rate of gaseous fuels (such as natural gas, biogas, LPG, or low-BTU specialty gases) to an internal combustion engine. It receives a fuel rate demand signal from a main engine control system and accurately adjusts its internal valve position to deliver the exact required flow.
• Key Features:
  • Integrated Design: Combines the valve and the electronic actuator into a single unit, simplifying installation and wiring.
  • Digital Compensation: Features onboard electronics that automatically compensate for variations in gas pressure and temperature. This ensures accurate mass flow metering regardless of fluctuating gas supply conditions, which is crucial for optimal engine performance, efficiency, and emissions control.
  • High Response: Engineered for fast and precise adjustments to fuel flow commands, enabling the engine to accept large load steps without losing speed.
  • Feedback Sensors: Incorporates internal sensors to continuously monitor critical parameters such as fuel pressure, temperature, and valve pressure differential. This data is used for internal control loops.
• Valve Size: The “110” in TecJet 110 indicates a nominal valve size of 110 mm. This is a significant indicator of its higher flow capacity.
• Generation Status: This is a non-RoHS compliant version from an older generation of TecJet valves.

Detailed Description

The Woodward TecJet™ 110 valve, including the 8407-523, has been a critical component for larger gaseous and dual-fuel engines. Its integrated design and digital compensation capabilities provide effective fuel control for these demanding applications.

Key characteristics of the 8407-523:

• High Flow Capacity: Being a TecJet 110, this valve is designed for engines that require higher fuel flow rates compared to those using TecJet 52 models. This makes it suitable for larger industrial engines or turbines.
• Precise Fuel Metering: The valve dynamically adjusts fuel flow based on real-time engine load and speed demands. By accurately controlling the fuel quantity, it helps maintain the optimal air/fuel ratio for efficient combustion, minimizing fuel consumption and reducing harmful emissions.
• Closed-Loop Control: Integrated electronics and sophisticated control algorithms, coupled with internal feedback sensors, allow for precise closed-loop control of fuel delivery. This provides excellent accuracy, stability, and repeatability.
• Robust Construction: Built to endure the demanding conditions of engine environments, including high levels of vibration and wide operating temperature extremes.
• Communication: Communication to the TecJet valve typically occurs over a CAN link, where the engine control system sends demand signals. Specific older part numbers like the 8407-523 would have been configured for a particular communication protocol, though explicit details for this exact part number are not readily available in public summaries.

Applications

The Woodward 8407-523 TecJet™ 110 valve would have been applied in various larger engine systems running on gaseous fuels:

• Large Natural Gas Engines: Used on high-horsepower four-cycle, turbocharged engines for power generation (large generator sets), industrial processes, and some marine or rail applications where significant fuel flow is required.
• Dual-Fuel Engines: Where large engines switch between or combine liquid and gaseous fuels.
• High-Capacity CHP (Combined Heat and Power) Plants: Ensuring efficient and clean operation of larger gas engines.
• Major Compressor Stations: For very large gas engines driving compressors in pipeline and industrial processing applications.

Compatibility and Replacement Notes

When dealing with the Woodward 8407-523, it’s crucial to understand its current status:

• Obsolescence: As an older generation, non-RoHS compliant part, the 8407-523 is very likely inactivated by Woodward. This means direct sales and repair options are likely discontinued.
• Replacement: Woodward typically provides modern Generation II (Gen II) TecJet 110 models as direct replacements for older versions. The specific replacement part number for the 8407-523 would need to be confirmed directly with Woodward or an authorized distributor, as the replacement matrix can be complex for older, customer-specific parts.
• Backward Compatibility: New Gen II TecJet valves are generally designed to be 100% backward compatible with their older counterparts. This means that if a modern replacement is available, it should function seamlessly without requiring engine recalibration, due to factory flow testing and robust design.
• Protocol Match: While Gen II valves offer flexibility, ensuring the new valve’s communication protocol matches your existing engine control system is paramount for a successful replacement.