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RT-Flex - Intelligent engines
Silniki
These engines are equipped with high pressure rails of fuel and oil (common rail) and electronic control.
The designed rails offer new options as far as the engine design and operation are concerned, among the others they:
1. Simplified mechanical subassemblies of the engine.
2. Introduced flexibility of injection and valves operation.
3. Increased movement dependability of the engine due to the use of the double engine safety system.
4. Gave higher efficiency in comparison to traditional engines.
5. Introduced many options of reducing exhaust gas emission.
In the engines of "flex" type the designers resigned from such generally used so far designing schemes like:
1. Fuel pumps of SULZER construction - one big pump for one cylinder.
2. Overload valves (forward - backward).
3. Distribution shaft.
4. Overload actuator.
5. Distribution shaft drive (three or four gear wheels of ~1500 mm diameter).
Rejecting the above subassemblies allowed to introduce innovative designing solutions, e.g.:
1. Injection pumps of Bosch type - for example for 7-cylinder engine there are just three small pumps generating fuel pressure for the rail.
2. The fuel rail - capable of keeping fuel pressure of ~1000 bar.
3. Injection control assembly - small hydraulic device enabling precise control of the injection parameters.
4. Oil rail - powered with two small piston pumps (for 7-cylinder engine), in which the pressure of ~200 bar is maintained.
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Electronically controlled ME/ME-C engines
Characteristics:
-reduced fuel consumption,
- better cylinder compensation,
- better acceleration,
Detailed observation and diagnostics of ME series engines also revealed:
- easier service,
- longer intervals between overhauls,
- easier gain of mean indicated pressure (MIP).
The operators of engines also indicated lower fluctuations in engine revolutions during stormy weather compared to fluctuations in engines with fuel injection controlled by distribution shaft. The fuel savings of the order of 4% were indicated in comparison to engines without electronic control.
Detailed specification:
The essence of the engines from this group is based on automatic and hydraulic system of fuel injection activation and on the control of exhaust valves. The activating devices are electronically controlled here, through determined number of controlling systems forming "Engine Control System".
Fuel injection in the engines of ME series is improved by supporting pressure device (Buster), which mechanically is a simpler device compared to fuel pumps used in traditional engines of MC series. The fuel plunger in engines of ME series is driven by piston activated by electronically controlled, hydraulically dosing oil valve, which is also the source of fuel in this case. Also the exhaust valve is, in engines of ME series, hydraulically opened, and closed by pneumatic shockabsorber.
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Characteristics:
- reduced fuel consumption,
- better cylinder compensation,
- better acceleration,
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The Engine & Machinery Division of Hyundai Heavy Industries Co.,Ltd. (HHI- EMD) has been supplying "One out of Three" of the world's two-stroke diesel engines for marine propulsion and power generation, and has always been striving to provide our valuable customers with high quality and most economical products. Our established reputation is well supported by our superb performance in the category of marine and stationary use of diesel engines since the start of production in 1978.
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Model S35 MC
Application Products:
Low-speed 2-ST propulsion engine Oil
Chemical Tanker and others
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The Wärtsilä RTA48T, RT-flex58T, RTA58T, RT-flex68 and RTA68 low-speed marine diesel engines are tailor-made for the economical propulsion of tankers and bulk carriers from around 20,000 to more than 150,000 dwt. This covers all types from Handysize and Handymax up to Capesize and Suezmax.
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The Wärtsilä RT-flex60C low-speed marine diesel engines are tailor-made for the economical propulsion of container feeder vessels to serve the growing fleets of the major container lines.
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The Wärtsilä RTA48T, RT-flex58T, RTA58T, RT-flex68 and RTA68 low-speed marine diesel engines are tailor-made for the economical propulsion of tankers and bulk carriers from around 20,000 to more than 150,000 dwt. This covers all types from Handysize and Handymax up to Capesize and Suezmax.
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The Wärtsilä RT-flex82C and RTA82C low-speed marine diesel engines are tailor-made for the economical and reliable propulsion of Panamax containerships with capacities up to about 5000 TEU at a typical service speed of around 24 knots.
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The Wärtsilä RT-flex82T and RTA82T low-speed marine diesel engines are tailor-made for the economical and reliable propulsion of large tankers, VLCCs and ULCCs of 200,000 tdw to more than 350,000 tdw.
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Wärtsilä RT-flex96C and RTA96C low-speed marine diesel engines are tailor-made for the economical propulsion of large, fast container liners.
For all sizes of large, fast containerships from around 3000 up to more than 10,000 TEU capacity, at service speeds of around 25 knots, the RT-flex96C and RTA96C low-speed engines provide a comprehensive engine programme for power outputs from 25,320 to 84,420 kW.
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The Wärtsilä RT-flex84T and RTA84T low-speed marine diesel engines are tailor-made for the economical propulsion of very large crude oil tankers (VLCCs and ULCCs) up to more than 300,000 dwt.
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