Woodward 8516-116
Product Name: TG-13 Series Mechanical-Hydraulic Governor
Product Introduction: A compact, heavy-duty mechanical-hydraulic governor designed for small-to-medium bore diesel and gas engines, as well as steam turbines. It utilizes flyweight speed sensing and hydraulic amplification to provide precise, reliable speed regulation without electronic components, ideal for harsh environments with limited power infrastructure.
Detailed content
Technical Specifications:
- Speed Regulation Range: 1200–2400 RPM (adjustable)
- Control Mode: Pure mechanical-hydraulic isochronous/droop control
- Output Torque: 16 N·m (12 ft-lb) maximum
- Hydraulic Fluid: ISO VG 32 hydraulic oil (self-contained reservoir)
- Operating Temperature: -40 °C to +70 °C
- Enclosure: Cast aluminum alloy, NEMA ‘A’ weatherproof rating
- Weight: 0.8 kg
- Shaft Diameter: 20 mm (standard fuel pump connection)
Functional Features:
- Fully mechanical-hydraulic operation (no external power required)
- Flyweight speed sensor directly coupled to engine shaft for accurate monitoring
- Adjustable droop (0–5%) for stable single-unit or parallel operation
- Integral mechanical overspeed trip protection (adjustable threshold)
- Compact, lightweight design for easy engine mounting
- Resists vibration, corrosion, and extreme temperatures
- Low maintenance with annual oil change and inspection only
Application Scenarios:
- Small industrial diesel generator sets (50–500 kW)
- Marine auxiliary generator and pump engines
- Agricultural irrigation and farm machinery engines
- Construction machinery prime movers (excavators, loaders)
- Remote off-grid power stations with minimal infrastructure












