Edit post

Edit your reply below.

Post Body
Enter your post below.
[quote user="kgbw49"] Tier 4 with its much poorer fuel economy does not make sense - I understand that it was going after specific types of emissions but burning more fuel per mile to do so just does not make sense.[/quote] This thesis comes up every so often. We had a thread in the locomotive sections without any proof either way. I'm not sure that Tier 4 locomotives are less fuel efficient than Tier 3. EMD switched to a new 4-stroke engine that is usually more fuel efficient than a 2-stroke. The auxilliary equipment management is completely different and there is the idle management. It is the whole package. THE GE Gevo-Tier 4 for is a completely reworked engine with common rail injection added IIRC. Both engines only use EGR not DPF. So the combustion is more complete. It would be nice if someone could provide relyable data. I think there are reasons that the class 1 railroads don't order Tier 4 locomotives: Most have a surplus of locomotive before they ordered Tier 3 locos above the real need to avoid the Tier 4 costs. I expect Tier 4 locomotive to have higher maintenance costs because of EGR. Even if the fuel efficiency might be less than Tier 3 and maintenance cost higher, it were the railroads damning SCR. Regards, Volker
Tags (Optional)
Tags are keywords that get attached to your post. They are used to categorize your submission and make it easier to search for. To add tags to your post type a tag into the box below and click the "Add Tag" button.
Add Tag