Replacement catalyzersbluemission Cat If a replacement of the exhaust gas catalyser is due on a vehicle, the customer is spoiled for choice: Does he opt for the expensive original product of the vehicle manufacturer or does he latch onto a replacement product from a pile of substitutes, supposedly equivalent and often from unknown manufacturers? Many…
SCR CatalystsSCR SCR catalyzers are used in order to decrease nitrogen dioxide emissions (NOx = NO + NO2) according to the so-called SCR process. SCR stands for Selective Catalytic Reduction and designates a process by which harmful nitrogen dioxides are converted selectively, i.e. targeted to a suitable catalyzer. In case of HJS, the development of…
Diesel oxidation catalyzersDOC Diesel oxidation catalyzers (DOC) are used to decrease hydrocarbon (HC) and carbon monoxide (CO) emissions. HJS has been using this technology as early as since the beginning of the 1990s. In addition, there are numerous applications in which the DOC is used to oxidise nitric oxide (NO) to nitrogen dioxide (NO2). Functioning…
Three-way catalyzersTWC The three-way catalyzers are able to reduce three pollutant groups of an exhaust gas from internal combustion engines. As well as the various hydrocarbons (HC) and the carbon monoxide (CO), the three-way catalyzer can also reduce nitrogen oxides. In specialist use this catalyzer is also designated as a TWC (Three-Way-Catalyst). Technology and functioning…
