Observations from PEMS testing of combustion engines of different applications

Abstract

The article compares data obtained in road tests with the latest legislative proposals relating to various applications of internal combustion engines. Passenger car emission tests have been performed several times on the same test route in accordance with the RDE procedure guidelines, for which a dozen or so criteria must be met, including the distance of each of the drive sections, their in the drive time and the dynamic characteristics of the drive. The analysis was also based on a two-dimensional operating density characterization, presented in the vehicle speed-acceleration coordinates. As a result, it was possible to compare dynamic properties, operating time density and, thus, to check the validity of conducted drive tests in terms of their feasibility and emission values. An exhaust emission related comparison of three types of powertrain have been presented: gasoline, diesel and hybrid in the RDE tests. The authors proposed a new form of presenting the road exhaust emissions results in relation to the carbon dioxide emission, referred to as a standardization of the emission results. The exhaust emissions from city buses fitted with different powertrains tested on an actual bus route and in the SORT test were also compared.

Impact of the use of comfort devices on the exhaust toxic compounds from a modern PC car with spark ignition engine

“…Sport mode significantly increases carbon monoxide emissions, most likely by increasing the torque and power output. None of the trips even comes close to the limit contained in the standards, which is confirmed by the authors' previous research in the study of carbon monoxide emissions [7,8,13]. The next analysis concerned the emission of hydrocarbons (Fig.…”

“…The number of amenities is particularly high in luxury vehicles, often doubling the original purchase price. The assembled device needs electricity to power it, which increases the load on the internal combustion engine by taking power from the crankshaft and converting the mechanical work into the electric energy in the alternator [1,5,8]. It is often associated with the use of starter batteries with increased capacity or increasing their number.…”

Selection of a Particulate Filter for a Gasoline-Powered Vehicle Engine in Static and Dynamic Conditions

“…Properly determining those intervals enables the subsequent generalization of the obtained results. The authors propose, in accordance with the assumptions presented in previous publications [27], to determine the number of intervals based on the following:…”

Assessment of two condensation particle counters (CPCs) in photometric mode for high concentration exhaust emission measurements

“…A further big step in the EU regulation was the control of vehicles on the road with portable emissions measurement systems (PEMS) during real-driving emissions (RDE) testing [5][6][7][8]. On-board vehicle testing requires small, lightweight instruments and consequently the technical requirements of the laboratory grade equipment were relaxed for PEMS.…”