Honda’s Next-Generation Clean, Green Diesel Engines
Takeo Fukui, Honda’s President and CEO, proudly introduced two new clean diesel engines at the 2007 Frankfurt Motor Show.
The said engines belong to Honda’s well-developed second generation diesel family that carries on the name i-DTEC (intelligent Diesel TEChnology). The i-DTEC makes use of the world’s finest technology in order to reduce emissions to a level equal to that of a petrol engine.
Set to make an appearance in the United States within the next two years, Honda’s next generation super-clean diesel engine features an innovative Lean-burn NOx-reducing Catalyzer. This catalyzer makes use of ammonia to ‘detoxify’ NOx. Upon detoxifying the NOx, it turns into harmless nitrogen. Not like Selective Catalytic Reduction (SCR) systems, which makes use of Urea supplied from a storage tank, Honda’s technology uses ammonia generated directly within the catalytic converter.
It has a two-layer structure: one layer absorbs NOx from the exhaust gas. The NOx during periodic rich burn controlled by the engine management system reacts with hydrogen from the exhaust gas. This produces ammonia that is then absorbed by the second layer.
During lean burn operation, the ammonia is utilized to convert the remaining exhaust NOx into nitrogen. One may wonder why ammonia. It is because ammonia is a great reagent for reducing NOx into nitrogen in oxygen-rich, lean-burn atmospheres. The system also has the capacity to provide for more efficient NOx reduction in the most critical temperature range of 200-300°C for diesel engine exhaust systems.
July 26th, 2008 at 1:20 am
honda enginesHonda’s Next-Generation Clean, Green Diesel Engines
July 26th, 2008 at 8:28 pm
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