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Woodward 8561-301
Product Name: PSG-301 Hydraulic Governor
Product Introduction: A compact, high-performance hydraulic governor for medium-duty reciprocating engines, combining mechanical simplicity with precise control. Designed for diesel/gas engines in generator, pump, and compressor applications, offering reliable speed regulation in harsh industrial and marine environments.
Detailed content
Technical Specifications:
- Speed Range: 400–2200 RPM (field-adjustable)
- Control Accuracy: ≤ ±0.2% steady-state regulation
- Actuator Output: Rotary mechanical shaft (fuel pump connection)
- Hydraulic System: Self-contained, oil reservoir with internal pump
- Power Supply: None (fully mechanical)
- Temperature Range: -30 °C to +75 °C
- Material: Cast iron body, hardened steel internal components
- Weight: 22 kg
Functional Features:
- Self-contained hydraulic system with no external oil lines
- Mechanical flyweight speed sensor for direct shaft monitoring
- Adjustable speed droop (0–5%) for parallel generator operation
- Integral overspeed protection (adjustable trip point)
- Compact footprint for easy engine mounting
- Resists vibration, corrosion, and extreme temperatures
- Minimal maintenance (annual oil change only)
Application Scenarios:
- Medium-sized industrial generator sets (200–1000 kW)
- Marine auxiliary generator and pump engines
- Agricultural irrigation and industrial pump drives
- Construction machinery prime movers
- Oil and gas field small-bore gas engines
