Description

Product Detail: WOODWARD 8440-1409 Speed Control / Governor Actuator

Overview

The WOODWARD 8440-1409 is a precision electro-hydraulic actuator, specifically designed as a speed control or fuel metering device for industrial engines and turbines. As a key component within Woodward’s renowned 8440 series of hydraulic actuators, this model is engineered to provide reliable, accurate, and responsive control of engine speed, load, and power output. It translates an electronic control signal from a governing system (e.g., a Woodward ECU) into a precise mechanical output to modulate fuel flow, ensuring stable operation under varying load conditions.

Key Features & Benefits

• Robust and Proven Design: Built for the demanding environments of industrial power generation, marine propulsion, and gas compression, ensuring long-term reliability.

• Precise Positioning: Provides accurate and repeatable linear output motion, allowing for fine control of fuel racks, throttle valves, or gas valves, which is critical for maintaining stable engine speed.

• High Output Force: Capable of generating significant force to overcome friction in mechanical linkages and ensure positive control under all operating conditions.

• Integrated Feedback: Typically includes an internal Linear Variable Differential Transformer (LVDT) or other position sensor. This provides closed-loop feedback to the control system, confirming the actuator’s position for enhanced accuracy and diagnostics.

• Sealed Construction: Designed to resist contamination from dust, moisture, and oil, which is essential for reliable operation in harsh industrial and marine environments.

• Compatibility: Designed to interface seamlessly with Woodward’s full range of electronic governors, synchronizers, and control systems (e.g., 2301A, ProAct®, EasyGen).

8440-1715

Technical Specifications

Parameter Description / Typical Specification

Manufacturer Part Number 8440-1409

OEM Manufacturer Woodward, Inc.

Product Type Electro-Hydraulic Actuator (EHA) / Servo Actuator

Input Signal Typically a Woodward-compatible DC signal (e.g., 4-20 mA, ±5 Vdc, 0-5 Vdc). Must be configured in the control system.

Output Feedback Signal Typically a DC signal proportional to position (e.g., 4-20 mA, 0-5 Vdc) from an internal LVDT.

Stroke Length [e.g., 1.5 inches, 38 mm] Note: Exact stroke must be confirmed from official documentation.

Output Force High force output, specific capacity varies.

Operating Pressure Requires a clean, regulated hydraulic power supply (e.g., 100-200 psi range is common). Exact pressure requirements are critical.

Electrical Connections Multi-pin circular military-style connector(s) for power, signal, and feedback.

Mounting Standardized flange or foot mounting pattern.

Note: The exact technical specifications, including stroke, force, pressure ratings, and signal types, are defined by Woodward and must be confirmed using their official documentation for the 8440-1409.

Typical Applications

This actuator is a critical drive element in control systems for:
• Power Generation: Governing speed and load on diesel and gaseous-fueled reciprocating engines in standby, prime power, and cogeneration plants.

• Marine Propulsion: Controlling engine speed for main propulsion and auxiliary engines on vessels.

• Gas Compression: Regulating engine speed to control compressor output and pipeline pressure in compression stations.

• Industrial Processes: Providing precise control for engines driving pumps, grinders, and other heavy machinery.

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