4 ms·
To decrease NOx emissions the engine temperature has to be decreased which is equal to lower engine efficiency. It means more fuel consumption and more COx emis
by ch4ck 9y ago
To decrease NOx emissions the engine temperature has to be decreased which is equal to lower engine efficiency. It means more fuel consumption and more COx emissions.
When will CO2 obsessed bureaucrats begin to care about fine particles emitted by gasoline direct injection engines?
- rciorba 9y agoIn the EU, with Euro 5+6 particulate limits for gasoline engines have been imposed as well. The previous rationale was "no limits are required because particulates are a diesel issue", which is bonkers because if it were so, one could simply apply the same limits to both and the gasoline engines would have passed with flying colours. My guess is heavy lobbying from automakers managed to keep these unregulated for so long, since indeed direct injection (which seems to be the new norm) makes fuel economy better but particulates worse. https://en.wikipedia.org/wiki/European_emission_standards#Emission_standards_for_passenger_cars https://en.wikipedia.org/wiki/European_emission_standards#Em...
- Reason077 9y agoTo decrease NOx emissions the engine temperature has to be decreased which is equal to lower engine efficiency. There are other ways to reduce NOx emissions, such as selective catalytic reduction (SCR) with urea ("AdBlue") injection. This technology is pretty standard on modern HGVs, but rare on light diesels.