Trains and ships pollute the air way more than pipelines both in production and in use, yet pipelines get “cancelled”.Begin rant.
I'm not a fan of the def but i guess we need clean air. I just wonder why $ no one ever talks about the pollution associated with aviation, both commercial and military.
Lots of unburned fuel for some reason, not good!
We do not Hydo Treat or run Kerosene through the HDS unit to remove the majority of Sulphur from Jet fuel. It would not work but I cannot imagine the FAA would take a risk of adding a EGR, DPF or SCR on a commercial or any Jet engine for that matter. I was shocked to see all tractors over 26HP having Tier 4 emissions requirements. As others have said personal tractors are a small fraction of emissions compared to Aviation and Shipping.