Wärtsilä 31 Marine Engine
Engine Summary
- Power Range: 5,040–10,400 kW
- Speed Range: 720 / 750 rpm
- Fuel Type: Diesel, Dual Fuel, Pure Gas
- Cylinder Configuration: 8V, 10V, 12V, 14V, 16V
- Max Power: 10400
Engine Information
Engine Family: Wärtsilä 31
Engine Type: Diesel Engine, Dual Fuel Engine, Gas Engine
Description
The Wärtsilä 31 is a medium-speed engine designed for marine propulsion and auxiliary power applications. It provides high fuel efficiency and stable performance for continuous-duty operation. Available in multiple cylinder configurations and offered in Diesel, Dual-Fuel, and Pure Gas variants, the engine provides flexible configuration options for a wide range of marine and power-generation applications. Its electronic engine control systems support precise engine operation, monitoring, and combustion management.
Compatible Filters
Specifications
- Rated Speed: 720 / 750 rpm
Dimensions & Weight
Compliance
- Emission Standards:
IMO Tier II; IMO Tier III with SCR in diesel mode; IMO Tier III in gas mode.
- Certifications: IMO Tier III compliant configurations; EIAPP certification applicable to certified engine configurations.
Accessories
Standard Accessories
The Wärtsilä 31 is available with essential engine systems and accessories, including the lubrication-oil system with pumps and filters, the cooling-water system, the charge-air system with turbocharger and air cooler, and the fuel-injection system with high-pressure pumps and filtration. Engine control and monitoring systems, starting equipment, and engine-mounted instrumentation are also available as part of the engine configuration.
Optional Accessories
Optional accessories for the Wärtsilä 31 may include SCR systems for additional NOx reduction, dual-fuel configuration packages, two-stage turbocharging systems, and engine monitoring and diagnostic options, depending on the engine configuration and application.
Warranty
Additional Notes
Engine specifications and configuration may vary depending on vessel type, application, operating conditions, and installation requirements. The Wärtsilä 31 is available in different configurations for marine propulsion and power-generation applications, including diesel, dual-fuel, and gas variants. Fuel quality, load profile, ambient conditions, and engine configuration may influence operating performance and fuel consumption. Refer to Wärtsilä technical documentation for detailed installation, operating, maintenance, and service requirements.