Governor Control Systems, Inc.

Woodward Governors for Diesel Engines

The Woodward SG governor hydraulic speed droop type governor is designed for use on small diesel, gas, or gasoline engines where isochronous control is not required. The design of the speed droop governor is such that the governor operates at a slower speed as engine load increases. It is through this characteristic that stability of the system is achieved and division of load between paralleled units is made possible.

Woodward SG Governor

The Woodward PSG governor is a pressure compensated, speed-droop or isochronous governor for controlling the speed of small diesel, gas, and gasoline engines, or small steam or industrial gas turbines. The governor is used to control engines or turbines driving alternators, dc generators, pumps, or compressors.

Woodward PSG Governor

Woodward PG dial and lever governors feature lever or dial speed adjustment, a spring-driven, oil-damped ballhead which filters frequency torsional vibrations, an optional speed adjusting motor, electric, oil, water, or pneumatic shutdown, optional droop, and have a wide speed range available.

Woodward PG Governor

The Woodward PG-PL is a pressure compensated, isochronous control type governor widely used for controlling speed for all types of diesel or gas engines and steam turbines, driving pumps and compressors. It produces output in the 12 to 58 ft-lb range.

Woodward PG-PL Governor

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 (1.4, 2.7, 14, 18, 39, 47, 79, 271, and 407 J) work capacity to position fuel racks or linkage. During normal operation, the electronic control and actuator section of the EGB regulates fuel to the prime mover. Upon loss of electronic control signal, the standard Woodward EGB is adjusted to cause prime mover shutdown. An electronic, pneumatic, or manual starting device is then used to allow prime mover starting and operation under ballhead control. The ballhead section also regulates fuel if the control fails in such a manner as to call for maximum fuel. The Woodward EGB governor/ actuator can also be factory set to give maximum fuel (reverse action) on electronic control signal loss. The self-contained hydraulic oil supply makes the governor easy to maintain in almost any installation environment.

Woodward EGB Governor/Actuator

Woodward UG-25+ Electronic-Hydraulic Governor

Responsive governor combines the best of electronic and hydraulic technologies for optimal engine operation

The UG-25+ governor is a microprocessor-controlled, mechanical-hydraulic amplified governor for controlling diesel, gas and dual fuel engines, and steam turbines. The UG-25+ governor offers enhanced control capabilities, such as start fuel and boost limiting schemes. The additional transient fuel limiting (jump-rate) improves the engine load acceptance and reduces transient emissions significantly.

UG-25+ Governor Features:

  • State-of-the-art speed sensing and control algorithms
  • Enhanced PID dynamics
  • Configurable speed settings and adjustment rates
  • Multiple fuel limiting algorithms, such as jump-rate, boost pressure, and start fuel limiting
  • Comprehensive diagnostics for easy troubleshooting
  • End-of-line programmability simplifies inventory

New Generation UG-25+ P3 Governor
Woodward has driven continuous product improvements toward this new generation P3 version. In addition to enhanced performance in high-vibration environments, the P3 is equipped with a new customer electrical interface.
The UG-25+ P3 is a fully compatible replacement product for all P0/P1 versions. Service and repair support for the UG-25 P1 version will continue to be available.

Woodward recommends that customers convert their UG-25+ P0/P1 versions to the new P3 version at the next service overhaul. GCS is one of a select number of Woodward Authorized Independent Service Facilities (AISF) chosen to support customers in converting existing UG25 Governors to the UG25 P3. 

Please contact the GCS Service Department for details on the UG-25+ P3 Governor and Actuator details.




Woodward UG-25+ Governor







UG-5.7/8/10 Governor
The Woodward UG-5.7/8/10 governor is a mechanical-hydraulic governor for controlling diesel, gas, or dual fuel engines, or steam turbines. UG-Dial governors are particularly suited for constant speed applications. Knob speed settings make synchronization easy for generator applications. Motor speed setting is available for remote synchronization. Adjustable droop makes load sharing between engines precise. UG Lever governors are widely used for variable speed control. Remote speed setting can be either mechanical through the speed setting lever or pneumatic with a special speed setting device. Special attachments are available for other applications.

Woodward UG Governors

UG MAS (milliamp speed setting)
The Woodward UG MAS (UG with milliamp speed setting) controls the speed or power of prime movers used for propulsion, locomotives, pumps, and compressors. The Woodward UG MAS speed-setting governor is a generic module which can be used on most engines with a UG drive. The Woodward UG MAS consists of a standard UG Dial governor equipped with a special cover assembly and a separate electronic driver box. The Woodward UG MAS is a pressure compensated, hydraulic governor designed to accept a standard 4-20 mA electrical current signal to set the speed of the governor. An internal pump, relief valve, and accumulator system maintain the governor operating pressure. A self-contained sump stores the oil and so reduces the possibility of contamination from outside sources.

Woodward UG MAS Governor

The Woodward 512/524 and 1712/1724 EPGs are three-component governing systems for 12 or 24 Vdc operation. All Woodward EPG systems include an actuator, an electronic speed control, and magnetic pickup. Both isochronous and droop controls are available. The Woodward 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.

Contact GCS for product specifications and technical manuals

Woodward EPG Governor
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