Product Description

Overview

The 8290-048 from Woodward is a compact Electrically Powered Governor (EPG) Speed Control Module engineered for precise engine regulation on diesel and gas engines. Designed for isochronous (constant speed) operation, it eliminates the need for mechanical drives or hydraulic systems. The module interfaces with a Magnetic Pickup (MPU) and Woodward actuators, delivering reliable, high-speed control while minimizing maintenance requirements. Its rugged aluminum enclosure provides protection against vibration and temperature extremes common in engine-mounted installations.

Core Functional Features

All-Electric Operation

• Operates solely on electrical signals, removing the need for oil lines, filters, or mechanical linkages.

• Optimized for low-voltage systems, delivering high-torque actuation with minimal current draw.

Precise Engine Speed Control

• Maintains exact RPM regardless of load changes, providing stable isochronous operation.

• Compatible with standard MPU signals to accurately sense engine speed across typical frequency ranges of 3000–6000 Hz at rated speed.

Adjustable Dynamics

• Built-in potentiometers for Gain and Stability tuning to prevent hunting and ensure smooth engine response.

• Separate adjustments for idle speed and rated operating speed allow fine control over engine performance.

Fail-Safe and Reliability

• Automatically shuts off actuator output if the MPU signal is lost, preventing overspeed or engine runaway.

• Electronic design with no moving parts inside the control module ensures long service life with minimal maintenance.

Technical Specifications

Applications

• Diesel and gas engines requiring precise isochronous speed regulation.

• Industrial generators, pumps, compressors, and small engine systems where hydraulic governors are impractical.

• Systems needing low-maintenance, all-electric speed control solutions.

FAQ

Q: Can this unit handle droop operation for parallel generators?
A: No, the 8290-048 is designed strictly for isochronous applications. External droop kits or alternate models are required for load-sharing scenarios.

Q: What type of actuators is it compatible with?
A: Works with Woodward EPG actuators, such as Models 512 and 524, and is optimized for 12V systems.

Q: How does it respond to sudden load changes?
A: The electronic design provides near-instantaneous speed correction, minimizing overshoot and oscillations.