Factors Affecting Heavy-Duty Diesel Vehicle Emissions

A Fuel-Based Inventory for Heavy-Duty Diesel Truck Emissions

A fuel-based method for estimating heavy-duty diesel truck emissions is described. In this method, emission factors are normalized to fuel consumption; vehicle activity is measured by the amount of diesel fuel consumed. For the San Francisco Bay Area during summer 1996, on-road heavy-duty diesel trucks were estimated at the upper bound to emit 110 × 103 kg/day of nitrogen oxides (NOx) and 3.7 ×...

Evaluation of Mobile Monitoring Technologies for Heavy-duty Diesel-powered Vehicle Emissions

Heavy Duty Diesel Vehicle Exhaust PM Speciation Profiles

On-road heavy-duty vehicle emissions monitoring system.

The introduction of particulate and oxides of nitrogen (NOx) after-treatment controls on heavy-duty vehicles has spurred the need for fleet emissions data to monitor their reliability and effectiveness. The University of Denver has developed a new method for rapidly measuring heavy-duty vehicles for gaseous and particulate fuel specific emissions. The method was recently used to collect 3088 me...

Effects of biodiesel blends and Arco EC-diesel on emissions from light heavy-duty diesel vehicles.

Chassis dynamometer tests were performed on seven light heavy-duty diesel trucks comparing the emissions of a California diesel fuel with emissions from four other fuels: ARCO emissions control diesel (EC-D) and three 20% biodiesel blends (one yellow grease and two soy-based). The EC-D and the yellow grease biodiesel blend both showed significant reductions in total hydrocarbons (THC) and carbo...