Description
The Woodward 8256-022 is a high-performance actuator within the EPG (Electrical Powered Governor) 512 series, specifically engineered to provide precise, isochronous speed control. Designed for seamless operation on 12-volt DC systems, this model serves as a versatile interface between the governor controller and the engine’s fuel system. Its ability to maintain a constant speed regardless of load changes—isochronous control—makes it an essential component for critical power generation applications.
As a certified Woodward 8256-022 component, it carries the UL/cUL listing, ensuring compliance with rigorous safety and performance standards for industrial equipment. This actuator is built to support a wide array of prime movers, offering reliable fuel control for everything from complex gas turbines to standard gasoline and diesel engines, including those requiring sophisticated start-fuel limiting logic.
Technical Specifications
- Product Name: EPG 512 Series Actuator
- Model Number: 8256-022
- Operating Voltage: 12 V DC
- Control Type: Isochronous Speed Control
- Certification: UL/cUL Listed
- Compatible Prime Movers: Diesel engines, gasoline engines, gas engines, and gas turbines
- Weight: Approximately 2.3 kg
- Dimensions: Standardized EPG mounting footprint
- Origin: Manufactured to high-specification Woodward industrial standards
Frequently Asked Questions
⚙️ What makes “isochronous” control beneficial for my engine? Isochronous speed control ensures that your engine maintains a perfectly steady frequency (RPM) regardless of the load applied. For power generation, this is vital as it provides a constant electrical output frequency, which is necessary for sensitive electronic equipment and grid synchronization.
🔌 Why is the UL/cUL listing important for this actuator? The UL/cUL listing provides independent verification that the actuator meets stringent electrical and mechanical safety standards. For many industrial, marine, or oil and gas installations, this certification is a mandatory requirement to ensure the hardware will not pose fire or electrical hazards in harsh environments.
⚠️ Does this model handle engines with start fuel limits differently? Yes. The 8256-022 is engineered to work in conjunction with controllers that manage start fuel enrichment. Whether you are using a diesel engine that needs extra fuel for a cold start or a gas engine requiring precise fuel limit control to prevent flooding, this actuator provides the fast, repeatable response time necessary for these critical startup cycles.
🛠️ How does this actuator integrate with my fuel linkage? The 8256-022 features a precision-machined output shaft designed to connect directly to your engine’s fuel rack or throttle body. Installation involves securing the actuator to the mounting bracket and adjusting the linkage length to ensure the actuator’s full stroke matches the engine’s travel from closed to full-open position.
Recommended Woodward Series Models
To support your engine management and governing needs, here are ten other Woodward models frequently integrated into EPG systems:
- Woodward 8290-027 EPG Controller
- Woodward 8290-030 EPG Controller
- Woodward 8440-013 EPG 501 Speed Control
- Woodward 8256-009 EPG Actuator
- Woodward 1712 EPG Actuator Series
- Woodward 1724 EPG Actuator Series
- Woodward EG-3P Actuator
- Woodward EG-6P Actuator
- Woodward L-Series Electric Actuator
- Woodward 505 Digital Governor
