|Results of the emissions testing. Click to enlarge. Source: AAE.|
A 2002 Volkswagen Golf TDi modified to run on straight canola oil (V100) produced emissions below the EPA standards for the vehicle in recent testing at the National Center for Vehicle Emissions Control and Safety located at Colorado State University (NCVECS).
Albuquerque Alternative Energies (AAE) modified the Golf with a vegetable oil fuel system supplied by PlantDrive and VO Control, consisting of a Hotfox stainless steel heated fuel pickup, Vormax dual stage vegetable oil processing filter, Vegtherm inline electric final fuel heater, and a VO Control Systems VO Controller.
The tests were conducted on an I/M 240 in conjunction with a chassis dynamometer. Three tests were run on ULSD to establish the baseline emissions for the vehicle. Another three tests were run on Canola oil (V100). The PlantDrive/VO Control Systems kit showed decreases in emissions over the entire spectrum analyzed.
The VO Controller precisely controls the fuel temperature to maintain correct viscosities while keeping the fuel temperature within the vehicle ECU range. The Hotfox stainless steel heated fuel pickup ensures that the vegetable oil fuel does not polymerize/oxidize. The Hotfox maintains the heat in the fuel tank locally, providing sufficient heat to maintain oil flow, rather than providing excessive amounts of heat to the tank such as a coil/radiator type tank heater does.
PlantDrive’s large capacity, heated Vormax prefilter/water separator/final filter uses a very fine element to protect against contaminants and water while still minimizing the need for filter changes on the vehicle in regular use.
The Vegtherm inline electric heater, in combination with he Vormax and Hotfox, allows the rapid heating of the vegetable oil to the proper level and the maintenance of the temperature.
The VO Controller monitors and coordinates the system, preventing the vehicle from switching to VO from diesel too soon, and regulating fuel temperatures to within a narrow range. This range corresponds to a temperature and viscosity that allows the vehicle’s ECU to properly meter fuel and adjust timing.
Raw data from the emissions test