Abstract
The paper presents a comparative analysis of the emission of CO, NOx, CO2 and gas mileage for two heavy-duty long haulage vehicles. The tests were performed on the same test road. The test route reflected typical daily operation of heavy-duty vehicles – a drive to the loading/unloading zone and cruise on national roads. In the investigations, the authors used a portable exhaust emissions analyzer (SEMTECH DS, PEMS – Portable Emissions Measurement System). Based on the performed analysis, optimum engine was selected for long haulage vehicles under conditions of Polish transport and logistic infrastructure in terms of fuel consumption.
Highlights
IntroductionThe fundamental indicator describing the dynamics of utility vehicles (heavy duty trucks and buses) is their unit power
The fundamental indicator describing the dynamics of utility vehicles is their unit power
Due to a growth in the number of vehicles minimum values of the above-mentioned unit power were introduced for heavy-duty trucks, so that their operation did not reduce the throughput of the main roads
Summary
The fundamental indicator describing the dynamics of utility vehicles (heavy duty trucks and buses) is their unit power. It is the quotient of the maximum usable power of the engine and its gross vehicles weight [4,5]. In the mid 1970s in Germany, a regulation was adopted that long-haulage trucks had to have a unit power of not less than 6 kW/t. This meant that a vehicle of the GVW of 38 tons had to have an engine of the power output of 228 kW (310 KM). Today long-haulage vehicles are characterized by good dynamics (capability of high accelerations) [9]
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