Posted by Brendon-KS on June 15, 2016 at 11:14:42 from (63.245.191.58):
In Reply to: Tier Four Trucks posted by showcrop on June 15, 2016 at 06:38:05:
Depending on the technology used for by the engine manufacturer going from Tier 3 to Tier 4 could actually increase the efficiency. The Tier 4 engines that utilize SCR/DOC are literally Tier 2 engines with exhaust aftertreatment added. These engines were stripped of the EGR systems which allowed them to run more efficiently but created more NOX. The SCR/DOC was then installed downstream of the engine to clean things up. My experience is with farm equipment but many over- the-road engines use the same technology so the principles are the same. We have many customers reporting a noticeable drop in fuel consumption with the new models compared to the older Tier 3 machines even though the power and capacity was increased. Of course, you do have the expense of another consumable (exhaust fluid) but this cost is small compared to what is saved by using less fuel. But, there is no denying the fact that the emission control systems are expensive and have added a lot to the selling price.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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