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Actuators for Diesel Engines

Woodward hydro-mechanical actuators are the vital link between the electronic governor and the engine fuel-control input. Our extensive product line provides a variety of control solutions for diesel, gas, and gasoline engines, or steam and industrial gas turbines.

Woodward new R-Series applications

APECS® Actuators

Woodward APECS® actuators work with Woodward APECS controls to provide proportional fuel control for construction, industrial, and agricultural equipment. Actuators are available with push or pull actuation, flange or base mount, 12 or 24 Vdc. Actuators come in 1.75" (44.5 mm), 2.50" (63.5 mm) and 3.00" (76.2 mm) diameter.


  • APECS® 2000 / APECS® 2500 Linear Actuators

    Woodward APECS® 2000 and APECS® 2500 linear actuators provide accurate precise positioning with a minimal number of moving parts. Many of the moving parts normally associated with electric actuators are eliminated, prolonging the MTBF (mean time between failure). These actuators are easy to install by mounting near the fuel system and direct connecting to the fuel control rod or lever. The actuator is suitable for installation on diesel, gasoline, or natural gas engines with fuel system force requirements of less than 13 pounds (58 N) of force.

    APECS® 70025 Integrated Actuator for Stanadyne "D" series injection pumps

    Woodward APECS® 70025 integrated actuator for Stanadyne "D" series injection pumps is a proven all-electric rotary actuator fully integrated into the cover of the Stanadyne pump. There are no brackets or external linkage, and the design is factory approved by Stanadyne. Installation is easy?simply remove the existing cover and install the new cover. Both a standard model and a completely sealed model are available.

    APECS® 7000 All-Electric Rotary Actuator

    Woodward APECS® 7000 all-electric rotary actuator provides 70 degrees of rotation in a small package. The actuator is applicable to gasoline, natural gas, and diesel engines. A direct connection between the actuator shaft and butterfly shaft is possible on carburetor and throttle-body applications.

Dyna Linear Actuators

The actuator is suitable for installation on gasoline, natural gas, and diesel engines.


  • Dyna 7000 Rotary Actuator

    The Woodward Dyna 7000 Rotary Actuator provides a new dimension in size and versatility for spark-ignited and diesel engines. This proven rotary design has been field tested over the last ten years. This simple design of a proportional electric solenoid has a rotating armature whose angular position is proportional to input coil current. The 70 degrees of rotation and small size enhance the overall mounting and interface with a variety of fuel systems.

EG-3P (Proportional) and EG-3PC (Proportional with Compensation) Actuators

Woodward EG-3P (proportional) and EG-3PC (proportional with compensation) actuators are designed for use on diesel, gas, and gasoline engines, or turbines and are particularly well suited for use in control systems requiring a proportional mechanical output of a proportional electrical input.

EGB Governor/Actuator

The Woodward EGB Governor/Actuator is used with Woodward analog or digital electronic controls that provide a proportional 20?160 mA signal to control dual fuel, diesel, and gasoline engines, and gas and steam turbines driving electrical or mechanical loads. The governor/actuator is available for outputs of 1, 2, 10, 13, 29, 35, 58, 200, and 300 ft-lb work capacity to position fuel racks or linkage.


EM-80 & EM-300 Gear-Motor Actuators

Woodward EM-80 and EM-300 gear-motor actuators are intended to be mounted on large diesel, gas, and gasoline engines, and on all types of turbines, to control the position of engine fuel racks, turbine fuel valves, turbine and turbocharger variable geometry, and to handle timing control. These systems are well suited for engines without a mechanical drive or hydraulic oil supply. A dedicated driver controls the actuator position and allows monitoring of most features. The EM-80 and EM-300 are freely programmable to meet many customer requirements.


EPG Actuation/Governing Systems

The Woodward 512/524 and 1712/1724 EPGs are three-component governing systems for 12 or 24 Vdc operation. All EPG systems include an actuator, an electronic speed control, and magnetic pickup. Both isochronous and droop controls are available. The EPG is designed for precise speed control of diesel, gas, or gasoline engines, and gas turbines. The governor is especially suited to prime movers without a mechanical drive or hydraulic oil supply for the governor, and which have low-mass, low-friction fuel linkages.

L-Series Position Controller

Woodward L-Series Position Controller provides a building block approach to total engine management. The microprocessor-based bi-directional actuator design easily attaches to fuel pumps, mixers, or throttle bodies. The L-Series Position Controller accepts a position command and drives the 0?60 degree output shaft to the commanded position based on an internal shaft position sensor. The high-efficiency torque motor delivers 0.34 Nxm (0.25 lb-ft) nominally over 60? travel range to operate fuel or air control devices.

PG-EG Actuator

PG-EG Actuator is an Hydraulic Powered Electric Actuator for Engine Controls.
The PG-EG Actuator is used on diesel engines to replace PGA/PGG/PGE-type governors, providing the advantages of electronic control with the convenience of the existing PG-type drive and linkage. This Actuator is recommended for installations involving unattended starts. It operates with drive speeds from 200 to 1200 rpm and converts an electrical input signal into a proportional hydraulic output shaft position, to control engine fuel flow.

PG-PL Actuator/Driver

Woodward PG-PL Actuator/Driver is an electrohydraulic actuator with a proportional driver interface which can be used with electronic controls providing a 0 to 200 mA position signal. The actuator is designed for use with Woodward 2301Aand D series, 700-series, Peak® 150, and 505 digital controls.

PGA-EG Actuator

The Woodward PGA-EG Governor/Actuator is designed specifically for applications requiring electronic engine control with mechanical backup. The governor/actuator combines the proven dependability of the hydromechanical PG governor with the flexibility of an electronic control. The mechanical governor features pneumatic tracking of the speed setting, which gives complete backup speed control from a remote location, with only a slight change in engine speed should the electronic signal fail. The PGA-EG can be used with a variety of Woodward electronic controls. The backup hydro-mechanical governor gives it redundant speed control for critical marine needs.

PGG-EG Actuator

PGG-EG governor/actuators have motor speed setting of the ballhead backup governor. The units are normally used on generator applications. Externally adjustable droop on the backup governor and load limit are standard on the PGG-EG. Setting the speed of the mechanical governor slightly higher than the maximum speed under electronic control causes the mechanical portion of the PGG-EG to always seek a fuel setting higher than the electronic control.

ProAct™ Digital Plus Actuator

Woodward ProAct™ Digital Plus actuator is intended to be mounted on-engine to control varying functions including, but not limited to: fuel rack positioning, timing control, throttle valve, and wastegate positioning. The actuator is effectively a positioner with an integral driver, which will accept a position command signal from another device in the system such as a speed control. The ProAct actuator includes an integral digital driver capable of controlling the actuator, communicating with the control system, and containing software and intelligence to realize monitoring and customizing functions.

R-Series Electric Actuators with Integral Drivers

Woodward?s R-11 and R-30 electric actuators provide high torque rotary travel to precisely position various types of control valves and other mechanisms that operate in high-temperature, highvibration locations. In reciprocating engine applications, these valves may include: fuel throttles, wastegates, exhaust gas recirculation, compressor recirculation (bypass), waste heat recovery, and exhaust. Additional applications on reciprocating engines include variable turbine geometry turbocharger actuation.

TM 55 Integrating Actuator / 55P Proportional Actuator

The Woodward TM 55 is an integrating type actuator used for controlling diesel and gas engines or steam and industrial gas turbines, and is designed for use with an adapter to Woodward liquid and gas fuel valves. Woodward TM 55P Actuator is an electrohydraulic, proportional actuator that is well suited for use in control systems requiring a rotary mechanical output that is proportional to electrical input. The Woodward TM 55 has an electrical position sensor which provides a feedback signal to Woodward electronic controls. This combination allows closed loop control of the actuator output-shaft.


The Woodward UG-Actuator offers the advantages of electronic control and load sharing systems while using the convenient existing UG8-type drives and linkages. The actuator provides the muscle for Woodward analog controls such as the 2301A, as well as Woodward digital controls and engine management systems. The UG-Actuator can be used with diesel, gasoline, or natural gas engines, as well as with steam and industrial gas turbines. The UG-Actuator has a self-contained oil sump so a separate oil supply is not required.