Recovery of Tail Pipe Species Concentrations and Its Effect on Emissions Calculations from Raw Exhaust Gas Streams during Chassis Dynamometer Tests

To check the feasibility of solar thermal remelting of aluminum scrap a directly absorbing rotary kiln receiver-reactor was constructed for experimentation in a mini-plant scale in the DLR high flux solar furnace. Conventionally the high energy demand for heating rotary kilns is met by the combustion of fossil fuels. This procedure generates a big exhaust gas volume which is contaminated by volatiles if the technology is applied to treat waste materials. Application of concentrated solar radiation to provide the high temperature heat enables to substitute the fossil fuel. Thus smaller off-gas streams are generated and lower investment and O&M cost are expected for the off-gas purification. In this paper market and environmental issues are discussed and pre-designs both for solar pilot and industrial scale applications are presented.

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UPDATING EMISSION FACTORS FOR IN-USE MOTORCYCLES FUELED BY GASOLINE, E5 AND E10 IN VIETNAM

ASEAN Engineering Journal ◽

10.11113/aej.v11.17055 ◽

2021 ◽

Vol 11 (3) ◽

pp. 199-206

Author(s):

Pham Huu Tuyen ◽

Pham Minh Tuan ◽

Kazuhiro Yamamoto ◽

Preechar Karin

Keyword(s):

Particle Number ◽

Combustion Engine ◽

Low Cost ◽

Emission Factors ◽

Exhaust Gas ◽

Gaseous Emissions ◽

Chassis Dynamometer ◽

Sampling System ◽

Particulate Matter Emission ◽

Long Time

Motorcycle is the most popular transportation means in Vietnam due to its low cost and flexibility. However, motorcycles emit substantial quantities of hydrocarbons, carbon monoxide, nitrogen oxides and some amount of particulate matter. Emission factors for in-use motorcycles in Vietnam were studied and established quite a long time ago. The objective of this study is to update the emission factors, not only gaseous emissions but also particle number, for in-use motorcycles in Vietnam. Ten carbureted and electronic fuel injected motorcycles representative for in-use motorcycles were selected for investigation. Each motorcycle was fueled by conventional gasoline, E5 and E10 in turn, and was tested on a chassis dynamometer according to ECE R40 driving cycle. The gaseous emissions were sampled and determined by standard methods, while the particle number in exhaust gas was sampled by using the sampling system developed by Laboratory of Internal Combustion Engine, Hanoi University of Science and Technology, Vietnam. The updated emission factors were then provided for carbureted motorcycles, EFI motorcycles and average motorcycle fleet in case of gasoline, E5 and E10 fueling.

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The influence of natural gas additive on the smoke level generated by diesel engines

Combustion Engines ◽

10.19206/ce-116895 ◽

2015 ◽

Vol 161 (2) ◽

pp. 78-88

Author(s):

Zdzisław STELMASIAK ◽

Jerzy LARISCH ◽

Dariusz PIETRAS

Keyword(s):

Natural Gas ◽

Engine Speed ◽

Diesel Oil ◽

Operating Conditions ◽

Exhaust Gas ◽

Chassis Dynamometer ◽

Natural Gas Engines ◽

Smoke Opacity ◽

Small Additive ◽

Selection Of

The paper presents the results of investigations performed on a Fiat 1.3 MultiJet engine fueled with natural gas (CNG) and diesel oil. The primary aim was to determine the influence of a small additive of natural gas on the exhaust gas opacity under variable engine operating conditions. The tests were performed for the engine work points n–Mo (engine speed– torque) reproducing the NEDC cycle. The selection of the work points was carried out according to the criterion of greatest share in the NEDC homologation test, covering the entire engine field of work used in the realization of the test on a chassis dynamometer. In the tests, the authors applied different energy shares of natural gas in the range 15–35.6%. The smoke opacity was analyzed in the FSN and mass scales [mg/m3 ]. The results of the investigations may be used in the design of electronic controllers for natural gas engines and in the adaptation engines to CNG fueling.

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Multi-component catalysts with spinel structure for the selective reduction of nitrogen oxide by ethylene in lean-exhaust gas streams

Кинетика и катализ ◽

10.7868/s0453881113050195 ◽

2013 ◽

Vol 54 (5) ◽

pp. 611-619

Author(s):

Md. Hasan Zahir ◽

K. Alhooshani ◽

Mohammad A. Jafar Mazumder ◽

Toshio Suzuki

Keyword(s):

Nitrogen Oxide ◽

Spinel Structure ◽

Selective Reduction ◽

Exhaust Gas ◽

Gas Streams ◽

Lean Exhaust

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Exhaust emissions and fuel consumption in a chassis dynamometer load test in the aspect of modification of an engine controlling system

Combustion Engines ◽

10.19206/ce-2017-402 ◽

2017 ◽

Vol 171 (4) ◽

pp. 11-16

Author(s):

Wiesław PIEKARSKI ◽

Andrzej KURANC

Keyword(s):

Fuel Consumption ◽

Gas Flow ◽

Test Bench ◽

Exhaust Emissions ◽

Load Test ◽

Exhaust Gas ◽

Chassis Dynamometer ◽

Test Conditions ◽

Controlling System ◽

Dynamometer Test

The article presents calculations of exhaust emissions and fuel consumption under test conditions on a chassis dynamometer test bench. The study describes the realization of the tests and the methodology of the calculation of the exhaust gas flow and the estimation of the fuel consumption based on exhaust emissions. The presented research results and their analysis describe the emission scale of selected gaseous fumes components during full engine load and the fuel consumption associated with such tests. Similar emissions occur during a rapid acceleration of a vehicle in road conditions.

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Influence of the dilution factor on the uncertainty of the exhaust gas emission results obtained during testing on the chassis dynamometer

AUTOBUSY – Technika Eksploatacja Systemy Transportowe ◽

10.24136/atest.2018.166 ◽

2018 ◽

Vol 19 (6) ◽

pp. 737-742

Author(s):

Andrzej Szczotka ◽

Bartosz Puchałka ◽

Piotr Bielaczyc ◽

Borys Adamiak

Keyword(s):

Large Impact ◽

Exhaust Emission ◽

Exhaust Gas ◽

Combustion Engines ◽

Chassis Dynamometer ◽

Dilution Factor ◽

Gas Emission ◽

Test Vehicle ◽

Emission Level ◽

Exhaust Gas Emission

Exhaust emission measurements on the chassis dynamometer are one of the most important and most complex tests which are performed on vehicles powered by combustion engines. The sample and dilution system (CVS - Constant Volume Sampling) belongs to the most important parts of the exhaust emission laboratory, and has a large impact on the accuracy of the results obtained. In this paper, the influence of the dilution factor (i.e. parameter changed by means of the CVS system, depending on the emission level and engine displacement of the test vehicle) on the uncertainty of the exhaust gas emission results is analysed.

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