Hitachi Zosen-The Medium-Speed Sulzer ZA40S Engine for Higher Overall Economy
Hitachi Zosen Corporation is highly experienced in constructing 4-stroke medium-speed Sulzer ZA40S engines up to now. The engine is especially suitable for passenger ships, ferry boats, Ro-Ro vessels and power plants.
Eight sets of HITACHI ZOSEN SULZER 14ZAV 40S engines have been supplied as engines for ferry boats since 1990. One notable example is the Ro-Ro trailer built by Miho Shipyard Co., Ltd. in 1995 for A.E Moller, on board which Hitachi's 8ZAL40S engine was installed. This vessel adopts the twin-engine twin-shaft system.
ZA40S type engines are used as power generating engines for a number of power plants around the world. HITACHI ZOSEN SULZER 8ZAL 40S, 12ZAV40S and 16ZAV40S engines which are also currently being operated at power plants both in Japan and overseas.
The ZA40S type is a most refined engine and has the following features.
1. High power concentration with up to 1,720kW/cyl. (980bhp/cyl.)
2. A wide range of applications
3. High reliability
4. Optimized fuel consumption
5. Low vibration and noise
6. Rotating pistons for heavy duty operation
7. Long life and easy maintenance
Performance Data of the ZA40S Engine
Cylinder: 6, 8, 9 (in-line) 12, 14, 16, 18 (Vee-form)
Cylinder bore: 400mm
Piston stroke: 560mm
Power output range (MCR): 3,600bhp〜12,960bhp
Speed: 510rev/min
Break specific fuel consumption: 136g/bhph (in-line)
135g/bhph (Vee-form)
Special attention should also be given to the Hitachi B & W 12K90 MC engine (MMCO: 74,640bhp). This is one of the highest output engines currently available in the world. Construction of the engine is scheduled to be done at the new Ariake Machinery Works as the No. 1 engine to be manufactured at the plant. The engine will be installed on the 6,000TEU container ship for A.P. Moller to be built by the Odense Shipyard of Denmark.
