ROLLS-ROYCE HOLDINGS PLC Freezing cold in Siberia, searing desert head or towering waves - mtu Series 2000 and 4000 engines are as tough as nails.
In the Siberian town of Aichal temperatures of minus 60 degrees Celsius are not uncommon.
Yet haul trucks fitted with mtu engines run 24 hours a day here at the Jubilejny mine, helping extract 10 million carats of diamonds each year.
but they run without any problems," said Vladimir Koyhevnikov, chief engineer of mine operator Alrosa. The engines are specially prepared to withstand the icy cold of Siberia. Because the polar diesel used in this region has a kerosene content of 60%, making it much lower-viscosity than normal winter diesel, the injectors are adapted to cope with the thinner fuel. Louvers in front of the radiator prevent the engine from cooling down. These are always closed when idling during really cold spells. The engine control unit automatically adjusts fuel quantity and injection timing in line with the air temperature.
On the flip side, freezing is a foreign word for the people in Saudi Arabia.
However engines still have to deal with special conditions: across the sandy desert - from the port city of Dammam on the Persian Gulf to the capital Riyadh in the interior - mtu engines power ten Powerheads, which integrate the whole propulsion system, produced by the Spanish manufacturer CAF. The conditions for trains in the desert are difficult: desert sand is so fine that no seal can withstand it - not even that of the engine compartment.
Each of the ten diesel-electric power cars is equipped with two 1,800-kilowatt mtu twelve-cylinder engines of the 4000 series. These are part of complete power modules consisting of a rail engine, a traction generator and the mtu automation system Powerline. "Integrating two mtu motors into one powerhead is unique and the result of customised development work," says mtu project manager Frank Scheider. The requirement, he says, was due to the fact that the motors had to incorporate redundancy , as their operation was vital. "If the engines fail in the middle of the desert, not even the air conditioning would work, that would be life-threatening for the passengers," says Scheider, who also explicitly praises the cooperation with the manufacturer CAF.
The air filter of the powerheads is also designed for the sandy conditions. Special cyclone coarse filters separate 90 percent of the sand grains before the air enters the engine room through the roof of the powerhead. However, before the air is compressed by the turbocharger and enters the combustion chamber, it is cleaned again by two large cyclone air filters, each with an integrated paper filter. What still gets into the engine now no longer harms it.
mtu Series 2000 engines have to work dependably in big lifeboats whenever the sea is so rough that other vessels return to port or are in distress. To keep these lifeboats moving, we have developed a special SAR kit for search-and-rescue (SAR) vessels, enabling the engines to remain running at extreme angles of heel or even when turning turtle. The Hong Kong fire department will join sea rescue organizations using this technology in Germany, the UK, the Netherlands, Norway and Canada. The design incorporates an extra-deep oil pan with special baffles and a modified crankcase breather system which enable the engine to withstand extreme angles of inclination in rough seas. The engines are also equipped with a digital inclination sensor which constantly transmits measured values to a dedicated software program, which in turn processes the signals and trips appropriate responses to protect the engines. The software is very versatile, allowing the SAR system to be tailored to meet customer requirements or different vessel designs.
And what if the earth moves?
Whether they're safeguarding power supplies in data centers or in hospitals, emergency power generators cannot be allowed to fail.
California experiences up to 10,000 earth tremors per year, and earthquakes are not uncommon in other parts of the world.
And they can - as has been proven on a special test stand in the US where a genset fitted with a 3,250 kW Series 4000 was shaken vigorously before being fired up.
The result was that before and - more importantly - after the simulated earthquake, the genset was running and doing what it needs to do in such a scenario: generate electricity. As a result, the genset meets the requirements of the International Building Code (IBC).
Our Alert service delivers the latest press releases, stories and regulatory news directly to your mailbox.
- Our stories
- Power Systems
- mtu Series 2000
- mtu Series 4000
- Engines
- Engineering and manufacturing
- Global
Attachments
- Original Link
- Original Document
- Permalink
Disclaimer
Rolls-Royce Holdings plc published this content on 07 January 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 07 January 2022 15:37:03 UTC.
