Quality Assurance of Exhaust Emissions Test Data Measured Using Portable Emissions Measurement System

2005 ◽  
Author(s):  
Mohan Krishnamurthy ◽  
Mridul Gautam
Keyword(s):  
Quality Assurance ◽  
Test Data ◽  
Measurement System ◽  
Exhaust Emissions ◽  
Portable Emissions Measurement System

scholarly journals The research of exhaust emissions and fuel consumption from HHD engines under actual traffic conditions

2014 ◽  
Vol 158 (3) ◽  
pp. 56-63
Author(s):  
Jerzy MERKISZ ◽  
Paweł FUĆ ◽  
Piotr LIJEWSKI ◽  
Andrzej ZIÓŁKOWSKI ◽  
Łukasz RYMANIAK
Keyword(s):  
Comparative Analysis ◽  
Fuel Consumption ◽  
Measurement System ◽  
Exhaust Emissions ◽  
Heavy Duty ◽  
Traffic Conditions ◽  
Test Road ◽  
Test Route ◽  
Heavy Duty Vehicles ◽  
Portable Emissions Measurement System

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.

Laboratory Comparison of Retroreflection Measurement System

2011 ◽  
Vol 308-310 ◽  
pp. 1041-1045 ◽  
Author(s):  
Wei Li ◽  
Chuan Zheng Zhu ◽  
Yong Yang
Keyword(s):  
Statistical Analysis ◽  
Test Data ◽  
Measurement System ◽  
Manufacturing Technology ◽  
Test Method ◽  
Measurement Systems ◽  
Safety Warning ◽  
National Test ◽  
Warning Effect

As the wide application of retroreflective materials, following problems such as safety warning effect, quality, manufacturing technology, test method become more and more important. Many national test centers or big manufactures build retroreflection measurement systems. In order to identify these laboratories’ ability, we organize this laboratory comparison. After 6 months experiments, this comparison successfully finishes. And all the test data are dealt with statistical analysis.

Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ali Dinc ◽  
Murat Otkur
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Test Data ◽  
Gasoline Engine ◽  
Exhaust Emissions ◽  
Piston Engine ◽  
Content Type ◽  
Fuel Flow ◽  
Aerial Vehicle ◽  
Ground Test ◽  
Mission Profile

Purpose The purpose of this study is to perform the preliminary design, flight performance and exhaust emissions calculations of a piston engine powered unmanned aerial vehicle (UAV) during a flight cycle which consists of multiple flight altitudes and airspeeds. Design/methodology/approach A genuine computer model in Matlab/Simulink was developed to predict the size and weight of UAV and piston engine (using Avgas 100LL fuel) performance together with exhaust emissions in an iterative process. Findings The amount of emitted exhaust gases including carbon dioxide, carbon monoxide, hydrocarbons and nitrogen oxides were calculated in a typical UAV mission profile as a whole and also divided into mission flight segments. Research limitations/implications Emissions were calculated based on fuel flow and engine speed inputs based on ground test data for emission indices. Test data for emission indices was very limited. Practical implications As UAV utilization has been increasing around the world, this study presents important and noticeable results on the emissions that need to be considered for environmental purposes. Originality/value In literature, emission prediction studies for UAVs are very rare. In fact, UAVs typically have quite different flight speeds and altitudes than regular manned aircraft and emissions change with speed and altitude. Additionally, unlike manned aircraft, UAVs can fly more than 24 h with different operation characteristics. The originality of this study presents the emission predictions of a piston engine UAV which flies with a significantly different mission profile than a manned aircraft.

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