Digital guide
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Woodward 8559-293
Product Name: PGA Series Mechanical Governor
Product Introduction: A compact, heavy-duty mechanical governor for small-to-medium bore diesel and gas engines, utilizing flyweight speed sensing and mechanical-hydraulic amplification to control fuel flow. Designed for rugged, low-cost speed regulation in industrial, agricultural, and construction machinery.
Detailed content
Technical Specifications:
- Speed Regulation Range: 600–2400 RPM (adjustable)
- Control Mode: Mechanical-hydraulic droop control
- Output Torque: 15–25 Nm (fuel pump actuation)
- Power Supply: None (fully mechanical)
- Operating Temperature: -30 °C to +75 °C
- Enclosure: Cast iron, IP30 protection
- Weight: 18 kg
- Mounting: Direct engine-mounted or panel-mounted
Functional Features:
- Pure mechanical operation (no electricity required)
- Flyweight speed sensor directly coupled to engine shaft
- Adjustable droop (3–5%) for stable single-unit operation
- External speed adjustment knob for on-site calibration
- Built-in mechanical overspeed trip protection
- Rugged cast iron housing resists vibration and corrosion
- Low maintenance with periodic lubrication only
- Compatible with diesel/gas engines (50–500 kW)
Application Scenarios:
- Small industrial diesel generator sets (50–500 kW)
- Agricultural irrigation and farm machinery engines
- Construction machinery (excavators, loaders, cranes) prime movers
- Industrial pump and compressor diesel engines
- Remote off-grid power stations with minimal infrastructure
