Emissions from NRMM Vehicles in Real Operating Conditions in Relation to the Number of Vehicles in Use in the Poznan City Agglomeration (SAE Paper 2020-01-2218)

Siedlecki, Maciej; Szymlet, Natalia; Lijewski, Piotr; Merkisz, Jerzy

doi:10.4271/2020-01-2218

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…The vehicle was tested according to two different measurement test methods, and the actual ecological indicators of the test vehicle were determined based on the comparative analysis of the results obtained from these tests. As shown in [7,8,14,15,17] tests carried out in laboratory conditions on engine dynamometers and test benches do not reflect the real exhaust emission values that occur in real vehicle operation. The NRSC test procedures according to which off-road vehicles are normally tested do not sufficiently reflect the actual engine operating parameters.…”

Section: Methodsmentioning

confidence: 97%

“…In this type of test, the real operating conditions of the vehicles are simulated in standardized tests. It has been shown, however [7,8,14,15,17], that the test cycles used in type approval do not reflect the real conditions of the engine's actual operation. This is mainly due to the wide variety and diversity among machines and vehicles classified under the NRMM (Non-Road Mobile Machinery) group.…”

Section: Introductionmentioning

confidence: 99%

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Research of ecological indicators of two-way vehicle in stationary conditions

Kamińska¹,

Andrzejewski²,

Daszkiewicz³

2022

Combustion Engines

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The article concerns the research on the emission of pollutants of a rail-road tractor in two stationary research tests. The purpose of the tests was to carry out control tests of pollutant emissions and their analysis. The object used during the works was approved in accordance with the Stage V standard, which requires measurements of emissivity both in stationary, dynamic and real conditions. Despite the requirement to test engines installed on a vehicle during their normal duty cycle with PEMS, the emission limits measured in this test have not yet been defined. Therefore, the work below focuses on the stationary test cycle. The measurements were carried out in accordance with the combustion engine operating points described in the approval test, and then compared with the modernized NRSC test. It contains modified measuring points and rotational speeds of the crankshaft, adopted on the basis of the most common operating parameters of agricultural tractor combustion engines in real operating conditions. The measurements were performed with the use of a mobile dynamometer and devices for measuring emissions of harmful exhaust gas compounds and recording on-board data. In the test, the vehicle drive system worked at fixed operating points, with defined values of crankshaft rotational speed and load. Based on the recorded data on the concentrations of pollutants in the exhaust gases, the specific emission of the object was determined. In the final stage of the work, these data were used to perform a comparative analysis with the emission limits contained in the standard.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Research of ecological indicators of two-way vehicle in stationary conditions

Kamińska¹,

Andrzejewski²,

Daszkiewicz³

2022

Combustion Engines

View full text Add to dashboard Cite

show abstract

Analysis of exhaust emission processes during the Real Driving Emissions test

Andrych-Zalewska

2023

AoT

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The article deals with the study of exhaust emissions from a combustion engine in the Real Driving Emission (RDE) test. These tests are a simulation of real conditions of use of motor vehicles. Nowadays, RDE tests are mandatory for Light Duty Vehicle (LDV) and Heavy Duty Vehicle (HDV) vehicles and in the future, restrictive standard. Euro 7, which combines stricter limits with a comprehensive RDE test cycle, is becoming a challenge for current vehicle engineering. The paper presents the results of pollutant emission tests from a passenger car (PC). In the tests of LDV in the RDE test, the results of which are analyzed in the article, the Portable Emissions Measurement System (PEMS) mobile exhaust emission testing system was used. The processes describing the operating states of the vehicle and the combustion engine, as well as the processes of exhaust emission intensity and the intensity of the number of particulate (PN), were examined. The correlation between the considered processes was investigated. The emission of carbon monoxide, hydrocarbons, nitrogen oxides, particulate and carbon dioxide as well as the road PN were examined. The zero-dimensional statistical characteristics of the examined processes were also determined. The probability density and power spectral density of the processes were established. A great diversity was found in the properties of the process distributions, as well as in the dynamic properties of the processes. In the summary of the analysis of the results of the car speed process, the operating states of the combustion engine and the processes of exhaust emission intensity and the process of the intensity of PN in the RDE test, conclusions were formulated regarding, among others, course of the intensity of these compounds, correlation of the processes of pollution emission intensity and the intensity of the PN with the process of car speed, distribution of processes.

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Emissions from NRMM Vehicles in Real Operating Conditions in Relation to the Number of Vehicles in Use in the Poznan City Agglomeration (SAE Paper 2020-01-2218)

Cited by 2 publications

References 16 publications

Research of ecological indicators of two-way vehicle in stationary conditions

Research of ecological indicators of two-way vehicle in stationary conditions

Analysis of exhaust emission processes during the Real Driving Emissions test

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