scholarly journals Analyzing and predicting the relation between air–fuel ratio (AFR), lambda (λ) and the exhaust emissions percentages and values of gasoline-fueled vehicles using versatile and portable emissions measurement system tool

2019 ◽  
Vol 1 (11) ◽  
Author(s):  
Shamil Ahmed Flamarz Al-Arkawazi
Keyword(s):  
Measurement System ◽  
Exhaust Emissions ◽  
Fuel Ratio ◽  
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.

Maintaining Low Exhaust Emissions With Turbocharged Gas Engines Using a Feedback Air–Fuel Ratio Control System

1987 ◽  
Vol 109 (4) ◽  
pp. 487-490 ◽  
Author(s):  
D. W. Eckard ◽  
J. V. Serve´
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Exhaust Emissions ◽  
Ambient Conditions ◽  
Load Range ◽  
Heating Value ◽  
Gas Engine ◽  
Precise Control ◽  
Natural Gas Engine ◽  
Fuel Ratio

Maintaining low exhaust emissions on a turbocharged, natural gas engine through the speed and load range requires precise control of the air–fuel ratio. Changes in ambient conditions or fuel heating value will cause the air–fuel ratio to change substantially. By combining air–gas pressure with preturbine temperature control, the air–fuel ratio can be maintained regardless of changes in the ambient conditions or the fuel’s heating value. Design conditions and operating results are presented for an air–fuel controller for a turbocharged engine.

Simplified Approach Based on Carbon Dioxide Model to Validate Real Driving EmissionsRoutes without Portable Emissions Measurement System

2021 ◽  
Author(s):  
Airto Cavalheiro de Queirós Júnior ◽  
Eduardo Mizuho Miyashita ◽  
Fernando Sarracini Júnior ◽  
Lucas Ferreira da Silva
Keyword(s):  
Carbon Dioxide ◽  
Measurement System ◽  
Simplified Approach ◽  
Portable Emissions Measurement System

On-road Exhaust Emissions of Passenger Cars using Portable Emission Measurement System (PEMS)

2013 ◽  
Author(s):  
Jerzy Merkisz ◽  
Agnieszka Merkisz-Guranowska ◽  
Jacek Pielecha ◽  
Pawel Fuc ◽  
Marianna Jacyna
Keyword(s):  
Measurement System ◽  
Exhaust Emissions ◽  
Emission Measurement ◽  
Passenger Cars ◽  
Portable Emission Measurement System
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