Real-world exhaust temperature and engine load distributions of on-road heavy-duty diesel vehicles in various vocations

On-Road Remote Sensing of Heavy-duty Diesel Truck

In the summer of 1998, the University of Denver conducted a remote sensing study in the Austin-San Marcos, Texas area. The focus of the study was to measure the ratios of CO, HC, and NO to CO 2 and to get percent opacity readings for heavy-duty diesel trucks with elevated exhaust. We calculated the grams of CO, HC, and NO per kilogram of fuel combusted from the ratios as would be observed by pr...

Heavy Duty Diesel Vehicle Exhaust PM Speciation Profiles

Cost implications of various Euro 4 and 5 aftertreatment solutions for heavy duty diesel vehicles

This study is firstly a short review of the types of exhaust systems predicted for Euro 4 (2005) and Euro 5 (2008), particularly focussed on the effects of combined NOx (nitrogen oxides) and PM (particulate matter) aftertreatment systems. Secondly, it explores in detail the implications of using a liquid secondary water-based fuel of urea on board heavy duty diesel vehicles in Europe as a basis...

Design and analysis of a thermoelectric generator for a heavy-duty vehicle in ‎real road test

Heavy duty vehicles have a great share on fossil fuel consumption and greenhouse gases in the world, while they waste two third of chemical energy of fuel. On the other hand, simplicity and long life of thermoelectric generators (TEGs) are considered more and more to convert thermal energy to electrical one. In this paper a TEG designed in the exhaust system of Renault Midlum 195 Dxi Engine. Th...

Quantifying in-use PM measurements for heavy duty diesel vehicles.

Heavy duty emissions regulations have recently expanded from the laboratory to include in-use requirements. This paradigm shift to in-use testing has forced the development of portable emissions measurement systems (PEMS) for particulate matter (PM). These PM measurements are not trivial for laboratory work, and are even more complex for in-use testing. This study evaluates five PM PEMS in comp...