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The DAIHATSU New 4-stroke Medium Speed Diesel Engine DC-17
Ryou Matsushita
Daihatsu Diesel Mfg. Co., Ltd.
1. Introduction
In addition to low fuel oil and lubricating oil consumption to reduce the running cost, high reliability and durability aiming at maintenance-free are required of 4-stroke medium speed diesel engine.
To much not only these requirements of direct users but also the needs of environmental conservation, DAIHATSU DIESEL developed the new compact 4-stroke medium speed diesel engine DC-17.
DC-17, which DAIHATSU introduced at the beginning of 21st century, is mainly fit for auxiliary engine of bulk carrier. DC-17 covers the lowest power output ranges of marine auxiliary engine that run mainly on heavy fuel oil.
2. Concepts
(1) High Reliability and Durability
(2) Low Maintenance Cost
(3) Environmental Protection and Harmony
(4) Compactness
(5) High Efficiency & Performance
(6) User Friendly
(1)-(5) concepts are the same as our DK engine series.
In addition to these concepts, (6)User Friendly was added at the development of the DC-17.
It means simple and easy installation and handling of the engine.
3. Principal data
Fig.1 5,6DC-17 Principal data
| Engine Model |
5DC-17 |
6DC-17 |
| Number of Cylinder |
5 |
6 |
| Cylinder Bore × Piston Stoke (mm) |
φ170 × 270 |
| Stroke/Bore-Ratio |
1.59 |
| Engine Speed (min-1) |
900 |
1,000 |
900 |
1,000 |
| Piston Speed (m/s) |
8.1 |
9.0 |
8.1 |
9.0 |
| Generator Output (kWe) |
440 |
560 |
| Break Mean Effective Pressure (MPa) |
2.09 |
1.88 |
2.21 |
1.99 |
| Max. Combustion Pressure (MPa) |
16 |
| Fuel Oil |
up to 700 mm2/s
@ 50cC (CIMAC H55) |
| Engine dry Mass (kg) |
5,600 |
6,250 |
| Generator Set dry Mass (kg) |
9,930 |
11,000 |
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Fig.2 Appearance
Fig.3 Appearance (photograph)
6DC-17
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