Woodward PG Governors for Large Engines
Proven and reliable hydraulic-mechanical governor technology for large engines and turbines
Woodward's PG pressure-compensated governor line includes models providing from 12 up to 500 foot-pounds of work output to effectively control the speed of the largest engines and turbines.
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
- wide speed range availability
PG
Woodward PG dial governors control the speed of diesel, gas, and dual-fuel engines, including applications such as:
- engines driving pumps
- compressors
- alternators
- variable speed DC generators
- marine propulsion units
- paper machines
Besides controlling speed, PG governors can also limit load and shut down the engine when the lubricating oil pressure fails. Woodward customizes each PG governor to meet the needs of the engine and the application.
PG-200 / PG-300
Woodward PG-200/PG-300 governors are designed to control speed and provide auxiliary PG limiting and control functions for large engines or turbines which require work capacity beyond the standard PG governor. With 237 or 422 J (175 or 311 foot-pounds) of work capacity over 40° of output, the unit allows direct control of many engines without modification of the fuel system or use of auxiliary amplifiers.
PG-500
Providing 648 Nm (478 lb-ft) maximum work capacity, the PG-500 governor is designed to control engine speed and provide auxiliary functions for very large engines or steam turbines.
Available optional features include:
- Governor heat exchanger
- Booster servomotors
- Vibration-resistant accumulators
- Safety shutdown and alarms
PGA
The PGA is a pressure-compensated, hydraulic governor that uses an air signal to establish the engine speed setting of the governor.
The PGA features:
- Isochronous or droop control
- Available work capacities from 16 to 678 J (12 to 500 foot-pound) output capacities
- Rotary or linear output
PGA-EG
Similar to the PGA governor, the PGA-EG features mechanical ballhead backup for marine propulsion or other critical applications.
PGG
The PGG is a mechanical-hydraulic, pressure-compensated governor that can set speed or power output from a remote location. It combines a permanent-magnet, speed-setting motor for accurate remote speed adjustment with speed-droop adjustment and load-limit control features. Manual speed setting at the governor is also provided. Pressure-actuated or electric-solenoid shutdown is available, in addition to other PG auxiliary devices.
PGG-EG
Similar to the PGG governor with remote speed setting capabilities, the PGA-EG features mechanical ballhead backup for marine propulsion or other critical applications.
PG-PL for Compressor or Pump Applications
The 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.
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