DieselNet includes technical papers, summaries of standards, and business information concerning diesel engines, emissions, fuel, and other technology. This includes the DieselNet Technology Guide, a reference source on diesel engines and emissions, and a business directory of suppliers and services related to engines and emissions.
http://digital.library.wisc.edu/1711.web/dieselnet
This permalink is a direct, persistent URL to the database that will always work and won't break.