Engine Exhaust After Treatment Systems Flashcards
1
Q
Beginning in ___, U.S. Domestic diesel engines were required to comply with more stringent EPA emissions
standards to control emissions
A
2007
2
Q
These engines are equipped with varying specialized exhaust equipment designed
to meet tiered EPA regulations, based on both calendar year and vehicle usage (i.e. on-road or off-road), to reduce __ ___ ___ emissions
A
sot
ash
nitrogen
3
Q
a special exhaust canister which has replaced the typical muffler.
A
After Treatment Device (ATD)
4
Q
found inside the ATD___ ____
A
Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
5
Q
The DPF will trap ___ ___ __ while the engine is running.
A
particulate matter
soot
ash
6
Q
Soot accumulation in the DPF requires periodic self-cleaning
through a process called ____
A
regeneration
