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Tier 4 emissions reduction

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mbusse

mbusse

Mechanical
Joined
Jul 9, 2007
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Does high EGR rate make sense for Tier 4A since it ultimately force to use a lot of aftertreatment for PM, change the chassis and might not even suffice to reach the Tier 4B NOx reduction objectives without an SCR?
 
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It will help to know what type of engine and application you are talking about, because for automotive, there is only Tier 2 in North America, and Euro 4 in Europe ...
 
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Indeed, I was referring to off-road engines for construction equipment
 
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