Coal Age

MAR 2018

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March 2018 www.coalage.com 35 diesel engines continued During the same month, GFS Corp. announced the development of a new LNG fuel conversion system for the Terex Unit Rig 4400 haul truck. The company said six of those trucks will be converted at a mine in India, using its EVO-MT Sys- tem. The first six trucks are scheduled to begin operating on LNG in early 2018 and the project is slated to expand in the near future to more than 50 trucks. The EVO-MT System is an integrated system consisting of onboard fuel storage and vaporization in addition to controls and safety systems that allow the truck to operate on a combination of LNG and diesel fuel, or "NG+D," as the company refers to it. The EVO-MT 4400 system will provide 259 usable U.S. gallons of onboard liquid natural gas storage, enough to com- plete a 12-hour shift. Leading the Charge MTU believes the combustion engine will continue to represent a large segment of its propulsion solutions for the near fu- ture, and its stated aim to achieve a 30% improvement in CO 2 emissions by 2030. Overall, the company plans to focus on exhaust gas aftertreatment, alternative fuels, electrification, digitization and total systems capability; i.e., integration of indi- vidual components to produce complete drive and energy generation systems. As part of this plan, its parent compa- ny Rolls-Royce acquired from the German company G+L innotec the exclusive rights of use for "Cross-Charger" turbocharg- ing-by-wire technology for off-highway combustion engines in the power range above 450 kW (600 hp). Rolls Royce plans to offer MTU engines with this technolo- gy starting in 2021. MTU and G+L innotec will complete the next stages of develop- ment on a partnership basis. The electrically assisted charging sys- tem comprises an electric motor com- bined with a traditional turbocharger de- veloped and manufactured by MTU. With this setup, a turbocharger can be acceler- ated electrically and the charge pressure built up earlier. During operating con- ditions in which the energy required for increased turbocharging would normally not be sufficient, electrical assistance can provide the needed boost. To provide the turbocharger with elec- trical assistance, a permanent magnet is installed upstream of the compressor wheel and the electrical winding is inte- grated into the casing of the compressor. With this arrangement, air drawn in by the compressor flows freely while cooling the special electrical components needed in the design. The unique feature of this arrangement is a large gap between the drive motor's magnet and winding: this so-called "media gap motor" design en- sures that there is no aerodynamic impact on the charger and also that existing char- gers can be adapted easily to enable them to make use of this technology. For more information CONTACT US for NO cost, NO obligation testing www.somersetenvironmental.com 724-591-8481 The best aeration system on the market, GUARANTEED! » No moving parts . » Indestructible HDPE plastic. » Can be built to any size flow. » Least expensive. » Most cost efficient. ACID MINE WASTEWATER TREATMENT SYSTEM MAELSTROM OXIDIZER ™ 0 $ CONTACT US for NO cost, NO obligation testing www.somersetenvironmental.com 724-591-8481 $AVE THOUSANDS ON YOUR ACID MINE WASTEWATER TREATMENT (typical savings > 70%) 0 OUT OF POCKET 0 IF YOU DON'T SAVE YOU DON'T PAY! MTU plans to incorporate electrically assisted turbocharging technology into future diesel engine design.

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