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Research & Development

The Research & Development (R&D) department systematically develops and implements ideas, market demands and legislation in the form of innovative, requirements-oriented and economically attractive product solutions.

• Particulate Reduction
  The HJS sintered metal filter is playing an important role in reducing emissions of particulate matter.
• Nitrogen Oxide Reduction
  The reduction of nitrogen oxide emissions is very important in terms of human health and the environment.
• Development Tools
  HJS employs the very latest methods and technologies in its Research & Development.
• Publications
  The latest HJS developments are regularly presented at trade conventions and congresses and reported on in a range of media.

Milestones in development

As far back as the 1980s, HJS enjoyed notable success in the development of three-way catalytic converters for petrol-engined vehicles. And since the early 90s, the company has been putting a huge amount of effort into researching and developing exhaust-gas aftertreatment technology for diesel engines.

• 1992 Begins R&D into diesel particulate filters
• 1995 Begins R&D into nitrogen oxide technology

It´s in this field that HJS is collaborating extremely closely with prestigious German universities and institutes, such as the Rheinisch-Westfälische Technische Hochschule Aachen (RWTH Aachen), FEV Motorentechnik (Aachen), Hochschule für Technik und Wirtschaft (Dresden) and the Fachhochschule Südwestfalen (Iserlohn).

In 2003, the diesel particulate filter developed in-house by HJS and based on sintered metal – the SMF^® sintered metal filter – was awarded the ´Deutscher Umweltpreis´ (German Environment Prize). The SMF^® enables the ´soot-free´ operation of diesel-powered vehicles and machinery.

HJS has had an R&D cooperation agreement in the field of nitrogen-oxide reduction technologies with the catalytic converter manufacturer Johnson Matthey of Royston, England, since 1995 and another with Germany´s Daimler AG (Stuttgart) since 2000. Successful cooperation enjoyed in this area has resulted in some significant, jointly held patents for all three partners.

With a wide range of patents for DPF^® (diesel particulate filter) and SCRT^® (Selective Catalytic Reduction Technology) systems, HJS sets benchmarks both nationally and globally.