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DUAL FUEL ENGINE
World first for
Comply with environmental regulations by using both diesel and gas fuels.
The use of natural gas is now attracting attention within the marine engine sector, both as a means of addressing fluctuating fuel costs, and as a way of reducing the burden on the environment. Basing on our reliable engines that will improve life cycle value for our customers, YANMAR have developed a dual fuel engine that can use both diesel and gas, which complies with IMO NOX Tier3 regulations as well as SOX Emission Control Area.
Outstanding performance thanks to YANMAR’s unique system.
Can operate with natural gas in any region
Through real-time analysis of cylinder internal pressure together with high-speed control, this system avoids abnormal combustion (knocking) even when running on natural gases with a low methane number. Offering superior combustion stability, this engine can operate with natural gas in any region and with no output restrictions.
Switch fuels even at 100% output
Freely select which fuel to use. The system makes it possible to switch from diesel mode to gas mode during navigation, with no output restrictions. Furthermore, during emergencies the system can shift safely and instantaneously from gas mode back to diesel mode.
Main specifications
◆Lineup
Propulsion Engines
| Engine Model | 6EY26DF | 8EY26DF |
|---|---|---|
| Method of ignition | Micro-pilot fuel compression | |
| No. of cylinders | 6 | 8 |
| Cylinder bore×stroke (mm) | 260 × 385 | |
| Displacement (L) | 122.6 | 163.5 |
| Engine speed (min-1) | 750 | |
| Output [ Shaft ] (kW) | 1533 | 2044 |
| Mean effective pressure (Mpa) | 2.00 | |
| Fuel | Natural gas / M.D.O | Natural gas / M.D.O / [H.F.O] |
Auxiliary Engines
| Engine Model | 6EY22ALDF | 6EY26LDF | 8EY26LDF | ||
|---|---|---|---|---|---|
| Method of ignition | Micro-pilot fuel compression | ||||
| No. of cylinders | 6 | 6 | 8 | ||
| Cylinder bore × stroke (mm) | 220 × 320 | 260 × 385 | |||
| Displacement (L) | 73.0 | 122.6 | 163.5 | ||
| Engine speed (min-1) |
900 | 720/750 | |||
| Output [Shaft] (kW) | 1100 | 1470 | 1960 | ||
| Mean effective pressure (Mpa) | 2.01 | 1.92/2.00 | |||
| Fuel | Natural gas / M.D.O / [H.F.O] | ||||
