scholarly journals A dynamic test of a vehicle in motion and exhaust gas emissions during alternative fuelling with gasoline and compressed natural gas (CNG)

2008 ◽  
Vol 134 (3) ◽  
pp. 52-60
Author(s):  
Krzysztof PARCZEWSKI ◽  
Kazimierz ROMANISZYN ◽  
Henryk WNĘK
Keyword(s):  
Dynamic Test ◽  
Published Data ◽  
Exhaust Gas ◽  
Test Results ◽  
Fuel Type ◽  
Compressed Natural Gas ◽  
Gas Emissions ◽  
Aggregated Data ◽  
Driving Cycles ◽  
Exhaust Gas Emissions

The majority of published data on exhaust gas emissions is cited based on the test results from the NEDC driving cycle. This paper specifies the methodology of how to develop dynamic characteristics of the emissions, based on the aggregated data from the measurement of modal emissions obtained in the course of NEDC and FTP-75 driving cycles for gasoline and CNG fuelling. The presented characteristics concern a real passenger car which was tested, then the characteristics were used to calculate the exhaust gas emissions during a specially developed driving test comprising four main motion resistances and engine braking. The effect of fuel type on selected emissions of exhaust gas components has also been compared and assessed.

scholarly journals PENGARUH PENGATURAN MODE CO DAN RPM MESIN TERHADAP EMISI GAS BUANG SEPEDA MOTOR INJEKSI

2019 ◽  
Vol 2 (01) ◽  
pp. 27-30
Author(s):  
SUGENG PRAMUDIBYO PRAMUDIBYO
Keyword(s):  
Gasoline Engine ◽  
Exhaust Emissions ◽  
Exhaust Gas ◽  
Test Results ◽  
Gas Analyzer ◽  
Negative Effects ◽  
Gas Emission ◽  
Gas Emissions ◽  
Exhaust Gas Emissions ◽  
Co Gas

The high population in Indonesia has an impact on increasing the mobility of the population in work and activities, which is followed by the increased transportation facilities needed by the community. One of the negative effects of the increasing number of vehicles is the danger of exhaust emissions. One way to minimize the danger of exhaust gases is to regulate the mixture of air and fuel on the gasoline engine. In Yamaha injection motors there is a CO setting technology, this technology will have an impact on fuel use. The standard CO on a Yamaha motorbike is 0 and can be added or reduced (±) until it reaches 30. Increasing CO one strip will cause the fuel sprayed by the injector to be reduced by 0.05 cc. Examination of exhaust gas emissions is carried out using the Qrotect 401 Engine Gas Analyzer which is capable of measuring CO2, O2, CO, HC and Lamda. Based on the test results show that the lowest exhaust emissions are produced by the vehicle at 2500 rpm and in CO-30 mode settings, namely CO gas emissions of 0.49%. So we can conclude that the lowest exhaust gas emissions are produced by the vehicle at rpm 2500 with CO-30 settings. In addition to co mode settings, variations in engine rpm also affect exhaust emissions. In different modes but with different rpm the results will also be different. In the CO 10 mode setting with rpm 1400 CO gas emission is produced at 2.102 while at 2500 rpm is produced 0.821. So at rpm 2500 produced exhaust emissions lower than rpm 1400. There is a significant effect between CO mode settings and engine rpm on motorcycle exhaust emissions.

scholarly journals Measurement of exhaust gas emissions from miniature turbojet engine

2016 ◽  
Vol 167 (4) ◽  
pp. 58-63 ◽  
Author(s):  
Bartosz GAWRON ◽  
Tomasz BIAŁECKI
Keyword(s):  
Exhaust Gas ◽  
Test Results ◽  
Jet Engines ◽  
Test Rig ◽  
Engine Operation ◽  
Gas Emissions ◽  
Jet Engine ◽  
Turbojet Engine ◽  
Characteristic Features ◽  
Exhaust Gas Emissions

This paper presents a methodology developed to measure exhaust gas emissions during operation of a miniature turbojet engine, using a laboratory test rig. The rig has been built for research and development works aimed at modelling and investigating processes and phenomena occurring in jet engines. The miniature jet engines, similarly to full–scale ones used commonly in air transport, are characterized by variable exhaust gas emissions, depending on engine operating parameters. For this reason, an attempt has been made to determine the characteristic features of miniature engine operation modes and to define the variability of operation parameters and exhaust gas emissions as a function of time. According to the authors, the preliminary tests allowed for defining specific profile of engine test, which enables proper measurement regarding exhaust gas emissions using the miniature jet engine. The paper also presents test results for Jet A-1 fuel, according to the used methodology.

Experimental Characterization of a Swirl Stabilized MGT Combustor

2015 ◽  
Author(s):  
T. O. Monz ◽  
M. Stöhr ◽  
W. O’Loughlin ◽  
J. Zanger ◽  
M. Hohloch ◽  
...  
Keyword(s):  
Flow Field ◽  
Flow Pattern ◽  
Flame Stabilization ◽  
Main Stage ◽  
Exhaust Gas ◽  
Test Rig ◽  
Gas Emissions ◽  
Preheating Temperature ◽  
Exhaust Gas Emissions

A swirl stabilized MGT combustor (Turbec T100) was operated with natural gas and was experimentally characterized in two test rigs, a pressurized and optically accessible MGT test rig and an atmospheric combustor test rig. For the detailed characterization of the combustion processes, planar OH-PLIF and simultaneous 3D-stereo PIV measurements were performed in the atmospheric combustor test rig. Flow fields, reaction zones and exhaust gas emissions are reported for a range of pressure scaled MGT load points. Parameter studies on combustor inlet conditions (e.g. air preheating temperature, air and fuel mass flow rates and fuel split) were conducted in the atmospheric combustor test rig. From the parameters studies the fuel split between the pilot and the main stage and the air preheating temperature were found to have the biggest impact on the flame shape, flame stabilization and exhaust gas emissions. The measurements of the ATM test rig are compared with measurements of the pressurized MGT test rig with and without an optically accessible combustion chamber. Opened and closed conical flame and flow pattern were found in both test rigs. Reasons for the two flame and flow pattern are supposed to be the interaction of pilot stage combustion and flow field and the interaction of the dilution air with the combustion and the flow field. The results are discussed and compared with repect to a transferability of combustion characteristics from the ATM test rig to the MGT test rigs.

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