Press release vom 05. May 2010
bauma 2010: clean solutions for mobile machinery and stationary applications
- HJS Fahrzeugtechnik to showcase new exhaust-gas aftertreatment systems for the OE and retrofit markets at bauma 2010
- New EU exhaust emissions limits force industry to act
- Leading machinery and engine manufacturers rely on tailor-made HJS technologies
Menden, 25. März 2010 – How can the exhaust emissions of diggers, road rollers and industrial trucks be reduced long term? This question is the key focus of this year's bauma international trade fair, which will run from 19 - 25 April in Munich, Germany, and is widely considered the most important showcase for innovation in the construction machinery, construction vehicle and construction equipment industry. 2011 will see the first in a series of new emissions laws and regulations applicable specifically to mobile machinery come into force in both Europe and the USA. Engine and machinery manufacturers will be required to develop and introduce measures to significantly reduce emissions of particulates and nitrogen oxides, which are responsible for polluting the environment and damaging people's health. "The legal requirements of the impending directives can only be met by pollutant reduction systems that are optimally adapted to the demands of different applications," explains Dr. Herman Weltens, Managing Director of HJS Fahrzeugtechnik GmbH & Co KG. This medium-sized enterprise based in Menden in central Germany specialises in the development and manufacture of exhaust-gas aftertreatment solutions for diesel engines, and will be exhibiting its wide range of technologies for all kinds of mobile machinery and stationary applications at this year's bauma trade fair.
Technologies to suit every need
Comprehensive exhaust-
gas aftertreatment in the non-
road sector holds great potential for reducing emissions at source and improving the quality of the air we breathe. Compared with road traffic, construction machines don't cover a lot of mileage, but they are frequently in non-
stop use over many hours at a time, often on construction sites located in conurbations that are subject to heavy pollution levels anyway. HJS has suitable solutions for both the original equipment and retrofit markets that meet the future emissions limits. The specialist's particulate filter systems cut soot emissions by up to 99 percent. And, in line with the respective application and customers' wishes, HJS offers different solutions for regenerating the filters, i.e. cleaning them by burning off the collected soot. These range from purely passive regeneration strategies through autonomous, self-
cleaning systems that use an additive, to an active, 1-
or 2-
stage, burner-
aided regeneration system.
The passive CRT system – short for continuous regeneration technology – consists of a particulate filter fitted downstream from an oxidation catalytic converter. CRT reduces the level of pollutants, such as carbon monoxide and hydrocarbons, in the exhaust-gases and traps soot particles at the same time. CRT is deployed for particularly powerful machines whose exhaust temperatures are consistently high.
Applications in the lower to average power range that operate for the most part at low load and therefore have low exhaust temperatures are the territory of active HJS technologies such as the SMF®-AR – a sintered metal filter with thermoelectric self-regeneration – or burner-aided systems. These systems actively generate the heat necessary to burn off the particulate matter, enabling the filter medium to regenerate under practically any engine load.
In addition, with the Selective Catalytic Reduction Technology (SCRT), HJS offers innovative emissions reduction systems that not only eliminate soot particles entirely but also cut nitrogen oxide (NOx) emissions by up to 90 percent and all other gaseous pollutants to the limit of detection. This is technology for the future: in 2014, Europe will see Stage IV of the EU's emissions directive for the non-road sector come into force, while the Tier 4-final emissions requirements will take effect in the USA. "This significantly tightens the limit values for the emissions from construction machinery," says Dr. Herman Weltens. "The requirements with respect to PM and nitrogen oxide emissions will then be so strict that they will in the majority of cases only be able to be complied with by using a combined SCRT system that comprises a particulate filter with passive or active regeneration and a denox unit (SCR)."
Partner for OEMs
HJS sees itself as a cost-
and quality-
oriented development partner for OEMs and accompanies machinery and engine manufacturers through every process step along the value chain, irrespective of whether high-
quality components, high-
efficiency particulate filter and denox systems, or the integration of combined SCRT systems is demanded. To enable them to meet the emissions standards of the future, HJS supplies each of its customers with a combination of technology that is tailored to their specific requirements. HJS has already equipped more than 20,000 applications, such as industrial trucks and construction machines, with tailor-
made solutions. The list of clients includes such famous names as Jungheinrich, one of the world's largest suppliers of industrial trucks, warehousing and materials flow technology, and Volkswagen Industrial Engines. The company’s drive systems are renowned for their economy and reliability and are installed by numerous machinery manufacturers. HJS has been able to win over these and other customers primarily through its experience and expertise in developing technologies customised to specific applications and clients' wishes.
If you would like more information about emissions reduction technologies for mobile machinery and stationary applications, please visit HJS's stand (Hall A5, Stand 213) at this year's bauma. Further information can also be found online at www.hjs.com.
