What does Tier 4 diesel mean?
What does Tier 4 diesel mean?
Currently, Tier 4 diesel engine standards are the strictest EPA emissions requirement for off-highway diesel engines. This requirement regulates the amount of particulate matter (PM), or black soot, and nitrogen oxides (NOx) that can be emitted from an off-highway diesel engine.
Does a EGR on a diesel work to reduce emissions overall?
Abstract: Exhaust gas recirculation (EGR) is an effective strategy to control NOx emissions from diesel engines. NOx emissions may be further reduced by cooling of the EGR stream. Drawbacks of EGR include increased PM emissions and increased fuel consumption.
What does EGR stand for?
Exhaust gas recirculation
Exhaust gas recirculation (EGR) is an emission control technology allowing significant NOx emission reductions from most types of diesel engines: from light-duty engines through medium- and heavy-duty engine applications right up to low-speed, two-stroke marine engines.
When did Tier 4 engines come out?
On May 11, 2004, EPA signed the final rule introducing Tier 4 emission standards, which are phased-in over the period of 2008-2015 [2786] . The Tier 4 standards require that emissions of PM and NOx be further reduced by about 90%.
Will EGR delete pass MOT?
Why EGR valve removal is worth it A clogged EGR valve will become stuck in an open or closed position and this can lead to irreversible turbo and engine damage. Due to this, many motorists choose to have EGR valve removal. This is perfectly legal. A car will not fail its MOT because it has had an EGR valve removal.
Is EGR delete legal UK?
Although it is not illegal to remove the EGR from your vehicle, it is an offence under the Road vehicles (Construction and Use) Regulations (Regulation 61a(3))1 to use a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet.
Is EGR bad for the engine?
A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power, reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.