scholarly journals PASSENGER CARS AND HEAVY DUTY VEHICLES EXHAUST EMISSIONS UNDER REAL DRIVING CONDITIONS

2014 ◽  
Vol 31 (3) ◽  
pp. 47-59 ◽  
Author(s):  
Agnieszka Merkisz-Guranowska ◽  
Jacek Pielecha
Keyword(s):  
Research Work ◽  
Exhaust Emissions ◽  
Combustion Engines ◽  
Heavy Duty ◽  
Passenger Cars ◽  
University Of Technology ◽  
Road Testing ◽  
System Project ◽  
Heavy Duty Vehicles

In the assumptions regarding to the transport policy both at the level of country and Europe there is the concept of sustainable development of transport. Warsaw University of Technology in cooperation with Poznan University of Technology performs research work concerning the shaping of environmentally friendly transport system – Project EMITRANSYS. In this project, one of the conditions is to reduce exhaust emissions by means of transport. The paper presents the reasons for the testing of the exhaust emissions under Real Driving Emissions testing (RDE). Research potential of Institute of Combustion Engines and Transport at Poznan University of Technology in the area of road testing of passenger and heavy-duty vehicles has been presented in the paper. Example test results have been shown in the aspect of the emission-related classification of vehicles.

Exhaust Emissions from In-Use Heavy Duty Vehicles Tested on a Transportable Transient Chassis Dynamometer

1992 ◽  
Author(s):  
D. H. Ferguson ◽  
Mridul Gautam ◽  
W. G. Wang ◽  
Nigel Clark ◽  
D. W. Lyons ◽  
...  
Keyword(s):  
Exhaust Emissions ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

Analysis and Control of Heterogeneous Connected and Autonomous Vehicles using a Spring-Mass-Damper System

2020 ◽  
Vol 2674 (8) ◽  
pp. 309-318
Author(s):  
Sookyuk Bang ◽  
Soyoung Ahn
Keyword(s):  
Equilibrium State ◽  
Autonomous Vehicles ◽  
Control Parameters ◽  
Heavy Vehicles ◽  
Heavy Duty ◽  
Passenger Cars ◽  
Lower Performance ◽  
Mass Damper ◽  
And Control ◽  
Heavy Duty Vehicles

This study analyzes the behavior of heterogeneous connected and autonomous vehicles (CAVs) and proposes the best vehicle sequence for optimal platoon throughput and platoon formation. A spring-mass-damper (SMD) system is adopted for control of CAVs, and the control parameters are formulated in relation to the physical capabilities of vehicles. To gain insight, we consider three types of vehicle: passenger cars, mini-vans, and heavy-duty vehicles. For each type, we investigate the maximum platoon throughput and the clustering time, defined as the time to reach the target equilibrium state. We further investigate different sequences of vehicle types in a platoon to identify the optimal vehicle order that maximizes the throughput and minimizes clustering time. Findings suggest that the highest performance vehicle (in relation to acceleration capability) should be placed as the leader of a platoon and that the number of passenger cars behind heavy vehicles (e.g., semi-trailers) should be minimized in the platoon. In addition, we examine how the proportions of lower performance vehicles affect throughput and clustering times. The result suggests that the higher the proportions, the lower the throughput and the longer the clustering time. The lowest performance vehicle had the greatest effect.

Exhaust emissions from heavy-duty vehicles

2001 ◽  
Vol 27 (1/2/3/4) ◽  
pp. 262 ◽  
Author(s):  
Tim Barlow ◽  
Ian McCrae
Keyword(s):  
Exhaust Emissions ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

Onboard Locomotive Exhaust Emissions Measurement

2007 ◽  
Author(s):  
David C. Brabb ◽  
Anand R. Vithani ◽  
S. K. Punwani
Keyword(s):  
Environmental Protection Agency ◽  
Health And Safety ◽  
Exhaust Emissions ◽  
Heavy Duty ◽  
Protection Agency ◽  
The Road ◽  
Specific Emissions ◽  
Heavy Duty Diesel ◽  
Road Testing ◽  
Smoke Opacity

Limiting harmful locomotive exhaust emissions is important to the Nation’s health and safety. The Environmental Protection Agency (EPA) has comprehensive gaseous exhaust emissions (or referred to as emissions hereto) testing requirements in place. All current tests are conducted on stationary locomotives. This paper discusses the development of an efficient stationary emissions measurement system that is compact, portable, easy to use, and applicable to onboard locomotives for in-use, over-the-road testing. More efficient locomotive emissions testing and better understanding of in-use emissions would be beneficial to all stakeholders. Sharma & Associates, Inc., (SA) adapted an off-the-shelf, portable, on-road, heavy-duty diesel truck emissions analyzer for locomotive use. This process included development of the necessary peripheral equipment and a computer program to take the raw emissions and report them as brake-specific emissions rates and duty cycle emissions. This paper describes the use of this system on a stationary locomotive. The system is currently being fitted and tested for over-the-road use. The measurement of particulate matter and smoke opacity were out of scope of the phase of the project that this paper is based on and not addressed hereto.

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