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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.

• Pollutants
  The internal combustion process produces carbon dioxide (CO₂), carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), sulphur dioxide (SO₂) and – primarily in the case of diesel engines – particulate matter.
• 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 GmbH (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 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.