Benefits of mtu’s SCR systemmtu
individually matches the SCR system to the specific engine and the application. At the same time, the drive system is optimized for low fuel consumption and a minimal space requirement for the SCR components. As far as possible, mtu
uses proven SCR components from the commercial vehicle sector. Customers subsequently benefit from a tried and tested standard production solution with a long service life which is optimally adapted to the engine package. mtu
drive systems are designed to be very robust in terms of changes in the operating conditions, which means that customers are very flexible in terms of how they employ their systems in a wide range of applications. Compared with other ways to reduce emissions, by using a diesel particulate filter, for example, an SCR catalytic converter does not increase backpressure in the exhaust system to the same degree. Consequently, the turbocharging system has to work against a lower backpressure and can be operated at a higher efficiency level.
System development at mtumtu
has wide-ranging expertise in SCR systems. This has enabled the company to optimally exploit the potential of exhaust aftertreatment in combination with the engine. Using modern simulation tools, mtu
matches parameters such as the exhaust gas flow through the catalytic converter precisely to the engine’s operating conditions. The results of those calculations are then used in the design of the catalytic converter casing. mtu
also improves the packaging by using computer simulations. Since mtu
supplies the drive and SCR system from a single source, it is able to optimally match the engine technologies such as combustion and turbocharging to the needs of exhaust gas cleaning system. This ensures, for example, that the operating temperature of the SCR system remains at an optimal level.
In the case of drive systems in the lower power range, such as Series 1000, 1100, 1300, 1500 and 1600 engines, mtu uses reliable SCR components from the commercial vehicle sector that are adapted to the specific requirements of their use in industry. mtu has also transferred this high-volume production expertise to larger engines with power outputs of up to 3,000 kW and has developed an economical modular concept for SCR metering devices and catalytic converters, with each module using two metering devices. mtu is currently advancing the development of its flexible modular concept for Series 2000 and 4000 engines: one module will completely cover Series 2000 engines, while two identical modules will be used for the Series 4000 engines. In addition to lower costs and high reliability, the benefits of the modular concept include a modest space requirement, since smaller individual modules can be better integrated into the engine package than one large unit.
mtu also assists its customers in the design of the reducing agent supply system for the SCR system. For the underfloor rail powerpack equipped with the V12 Series 1600 engine, mtu is even developing a complete SCR system that, in addition to the catalytic converter and metering system, includes a reducing agent tank, heater and piping.