HJS Emission Technology GmbH & Co. KG is a medium-sized company founded in 1976 and based in Menden in central Germany. HJS has many years of experience and expertise in the field of exhaust-gas aftertreatments Some 500 employees are engaged in the development, production and marketing of modular systems for reducing pollutant emissions.
These innovative environmental protection technologies can be used either as original equipment or for retrofitting in passenger cars, commercial vehicles as well as a wide range of non-road mobile machinery and stationary applications. In addition to systems for spark-ignition engines, HJS today focuses on solutions for diesel engines – especially for reducing the emissions of soot particles (PM) and nitrogen oxides (NOx). With its extensive range of patents for DPF® (diesel particulate filter) and SCRT® (Selective Catalytic Reduction Technology) systems, HJS sets benchmarks both nationally and internationally. HJS is represented in the UK through Emission Engineering Ltd.
HJS has helped numerous vehicle operators to upgrade emissions to ensure compliance with the London ULEZ and Clean Air Zones across the UK, our systems have been tested at Millbrook proving ground and are approved by the energy savings trust.