This could be the breakthrough the automotive industry is looking for. For almost two years, diesel related issues have created havoc and has proven to be a costly affair in fines and recalls for some. That’s not all, due to the negative publicity associated with diesels despite its benefits, demand for diesel vehicles in diesel-friendly markets have also declined drastically as consumers are not sure what to look for. In such a scenario anything that can offset the diesel image with genuine performance characteristics [emission levels in this case] is welcome.
“Soon, emissions will no longer be an issue,” promises Bosch CEO Volkmar Denner. Bosch claims to have achieved a ‘breakthrough’ that reduces exhaust pollutants by an order of magnitude. Bosch claims its prototype cars are emitting “as little as” 13mg of nitrogen oxides per kilometre in standards-compliant real driving emissions (RDE) testing, representing a fraction of the 120mg legal limit that will be rolled out in 2020. In “particularly challenging urban conditions” the average emissions are “as low as” 40mg per kilometre.
Bosch engineers are said to have combined advanced fuel-injection, a newly developed air management system and intelligent temperature management.
“NOx emissions can now remain below the legally permitted level in all driving situations, irrespective of whether the vehicle is driven dynamically or slowly, in freezing conditions or in summer temperatures, on the freeway or in congested city traffic,” the Bosch notes.
Existing diesel vehicles are said to experience significant increases in NOx output when drivers are more aggressive on the throttle, or when idling in traffic and the exhaust gases are below 200 degrees Celsius. The new solution works around an RDE-optimized turbocharger that reacts more quickly to better control boost pressure across the power band, while an advanced thermal management system ensures the exhaust-gas temperature stays hot enough in all conditions.
The company says the breakthrough does not require any additional hardware components beyond the parts already employed in production vehicles, and will not make diesel vehicles any less affordable.