My take on the whole government control thing is that it will mostly affect the bigger companies.
The EPA has grown so big and the area of "control" so wide that all the small stuff will go under the radar.
The big engine shops and any commercial buildings will have to comply.
http://www.epa.gov/ttn/atw/nsps/cinsps/dieselengineprop_fs.htmlsnip
The rule would take effect in three, increasingly stringent stages:
1. The first is a transition period to control emissions from diesel engines built after this rule is proposed but before the 2007 model year. Owners or operators would comply with this regulation by purchasing an appropriate engine and by operating and maintaining the engine according to the manufacturers' instructions.
* In most cases, the owner/operator would purchase a certified nonroad engine for stationary use and that would be sufficient to comply with the regulatory requirement.
* In less likely cases, the owner/operator would purchase a non-certified engine and would have several options (using manufacturers emissions data or previous test results on a similar engine, or stack test data) to demonstrate compliance with the pre 2007 emission limits.
* In all cases, the information which demonstrates new engine compliance and the appropriate maintenance records must be kept on site.
2. Beginning in model year 2007:
* Engine manufacturers would be required to certify that all new, modified or reconstructed stationary diesel engines meet the stringent emissions levels for NOx, PM, CO, and HC that are required for the same size engine and model year for nonroad diesel engines in the categories known as Tiers 1 through 4, with a few exceptions.
* Stationary emergency diesel engines would be required to be certified to meet emissions limits through Tier 3 and also Tier 4, however, Tier 4 requirements for them do not require add-on controls.
3. Beginning with 2011 model year engines, add-on controls would be required to achieve the emission limits for non-emergency engines.
I have found conflicting emission's data on NOx from using SVO and WVO but using 100% Bio diesel seems to pass no problem. Some real world testing of stock roids for a base line would be great. Reducing NOx so as not to increase smog and keep or improve the BSFC for me would be a personal goal since my long term plan is to be off grid and an alternatively fueled prime mover I am building is a big part of the it.