The Wartsila Dual-Fuel Engine
The latest gas engines introduced to the Wartsila family are the Wartsila 32DF and Wartsila 50DF engines. Wartsila successfully completed the factory acceptance test of the first Wartsila 50DF engine in a series of four dual-fuel engines for a 74,000 cu. m.
LNG carrier. The vessel is currently under construction at the French shipyard Chantiers de l'Atlantique for the French gas holding company Gaz de France.
Due for delivery in 2004, it will be powered by four Wartsila 6L50DF dual-fuel engine generating sets which will meet all the ship's propulsion and shipboard electrical requirements. The Wartsila 6L50DF engines each develop 5,700 kW at 514 rpm.
The new engines have a four-stroke working cycle and can be run alternatively in gas mode or liquidfueled diesel mode. In gas mode they run as a leanburn engine according to the Otto cycle. Ignition is initiated by injecting a small amount of diesel oil (pilot fuel), giving a high-energy ignition source for the main fuel gas charge in the cylinder. The 'micropilot' injection system uses less than one percent of nominal fuel energy input. In liquid fuel mode the DF engine works just like any diesel engine, using a traditional fuel injection system. The Wartsila DF engine comes in two ranges, the 32DF and 50DF.
Both are based on well proven diesel engines, the Wartsila 32 and the Wartsila 46. The power range for the DF engines starts at 2010 kW for the 6L32DF and reaches 17,100 kW for the 18V50DF.
Circle 178 on Reader Service Card
Other stories from May 2003 issue
- NASSCO Delivers First of ORCA Class page: 10
- Aerodynamic Garage Ships page: 12
- RoPax Milestone page: 14
- Safe Boats Wins 700- Boat, $145-M Contract page: 17
- "I'm Looking Through You" page: 18
- Damen Offers Disaster Prevention Vessels page: 22
- NCL Acquires S/S United States page: 23
- Farstad Shipping Goes Big page: 24
- Frontline Continues to Blaze a Path page: 24
- Solid Roots to Withstand Future Storms page: 25
- The Best of Both Worlds page: 26
- MP: Eying Patrol Potential page: 30
- DNV Maritime: Changing of the Guard page: 31
- Small Tankers, Huge Market Potential page: 33
- Knutsen OAS Shipping Leads Gas Shipping Charge page: 34
- Nor-Shipping 2003: Bigger Than Ever page: 37
- Tribon M2 Enhanced Again page: 39
- Optimized Data Communication at Bergesen page: 39
- SES Electrical Sees Bright Future page: 39
- An Innovative LNG Carrier Concept page: 40
- A Multi-Billion Opportunity page: 40
- The Wartsila Dual-Fuel Engine page: 41
- Aluminum Gone "Bad" page: 42
- Integration Of AIS And ECDIS: More Information, Better View, Improved Safety page: 46
- Robert Allan: Naval Architecture is in the Blood page: 50
- Custom Solutions page: 52
- The Big One: L.A. Fireboat 2 page: 53
- Propulsion Stays Firmly Based on Diesel Engines page: 54
- Bunker Industry Fueled by Word Affairs page: 56
- Lube Oils on Test page: 57
- EMMIF: Getting Heavy With Bunkers page: 58
- Onboard-Napa Power Yields Fuel Savings page: 58
- Algae-X — Optimal Fuel and Oil Quality page: 61