The Measurement of Gaseous and Particulate Emissions from Light-Duty and Heavy-Duty Motor Vehicles Under Road Driving Conditions

1988 ◽  
Author(s):  
C. J. Potter ◽  
J. C. Bailey ◽  
C. A. Savage ◽  
B. Schmidl ◽  
A. C. Simmonds ◽  
...  
Keyword(s):  
Motor Vehicles ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Light Duty ◽  
Driving Conditions

Diesel Particulate Emissions: Landmark Research 1994-2001

2002 ◽  
Keyword(s):  
Environmental Protection Agency ◽  
Diesel Emissions ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Protection Agency ◽  
Mobile Source ◽  
Emissions Reductions ◽  
Diesel Particulate ◽  
The Past ◽  
Light Duty

The need for manufacturers to meet U.S. Environmental Protection Agency (EPA) mobile source diesel emissions standards for on-highway light duty and heavy duty vehicles has been the driving force for the control of diesel particulate and NOx emissions reductions. Diesel Particulate Emissions: Landmark Research 1994-2001 contains the latest research and development findings that will help guide engineers to achieve low particulate emissions from future engines. Based on extensive SAE literature from the past seven years, the 45 papers in this book have been selected from the SAE Transactions Journals.

scholarly journals Particulate emissions of heavy duty diesel engines measured from the tailpipe and the dilution tunnel

2021 ◽  
pp. 105799
Author(s):  
Sheng Su ◽  
Tao Lv ◽  
Yitu Lai ◽  
Jinsong Mu ◽  
Yunshan Ge ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Heavy Duty Diesel

Number size distribution of particulate emissions of heavy-duty engines in real world test cycles

2003 ◽  
Vol 37 (37) ◽  
pp. 5247-5259 ◽  
Author(s):  
Urs Lehmann ◽  
Martin Mohr ◽  
Thomas Schweizer ◽  
Josef Rütter
Keyword(s):  
Size Distribution ◽  
Real World ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Number Size Distribution

Effects of the Injection Parameters on the Emissions of a Heavy Duty Diesel Engine

2009 ◽  
Author(s):  
M. Yılmaz ◽  
M. Zafer Gul ◽  
Y. Yukselenturk ◽  
B. Akay ◽  
H. Koten
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Combustion Process ◽  
Design Parameters ◽  
Combustion Model ◽  
Particulate Emissions ◽  
Multiphase Model ◽  
Heavy Duty ◽  
Flow Development ◽  
Air Motion

It is estimated by the experts in the automotive industry that diesel engines on the transport market should increase within the years to come due to their high thermal efficiency coupled with low carbon dioxide (CO2) emissions, provided their nitrogen oxides (NOx) and particulate emissions are reduced. At present, adequate after-treatments, NOx and particulates matter (PM) traps are developed and industrialized with still concerns about fuel economy, robustness, sensitivity to fuel sulfur and cost because of their complex and sophisticated control strategy. New combustion processes focused on clean diesel combustion are investigated for their potential to achieve near zero particulate and NOx emissions. Their main drawbacks are increased level of unburned hydrocarbons (HC) and carbon monoxide (CO) emissions, combustion control at high load and limited operating range and power output. In this work, cold flow simulations for a single cylinder of a nine-liter (6 cylinder × 1.5 lt.) diesel engine have been performed to find out flow development and turbulence generation in the piston-cylinder assembly. In this study, the goal is to understand the flow field and the combustion process in order to be able to suggest some improvements on the in-cylinder design of an engine. Therefore combustion simulations of the engine have been performed to find out flow development and emission generation in the cylinder. Moreover, the interaction of air motion with high-pressure fuel spray injected directly into the cylinder has also been carried out. A Lagrangian multiphase model has been applied to the in-cylinder spray-air motion interaction in a heavy-duty CI engine under direct injection conditions. A comprehensive model for atomization of liquid sprays under high injection pressures has been employed. The combustion is modeled via a new combustion model ECFM-3Z (Extended Coherent Flame Model) developed at IFP. Finally, a calculation on an engine configuration with compression, spray injection and combustion in a direct injection Diesel engine is presented. Further investigation has also been performed in-cylinder design parameters in a DI diesel engine that result in low emissions by effect of high turbulence level. The results are widely in agreement qualitatively with the previous experimental and computational studies in the literature.

scholarly journals Folk Psychology and Its Ontology

2020 ◽  
pp. 29-52
Author(s):  
Peter Langland-Hassan
Keyword(s):  
Folk Psychology ◽  
Mental Representations ◽  
Ontological Status ◽  
Heavy Duty ◽  
Important Conclusion ◽  
Psychological States ◽  
Light Duty ◽  
The Difference

The question of whether imagination can be reduced to other folk psychological states will turn, in part, on what we take those other states to be—on how we view their ontological status. There are very different views in philosophy and psychology concerning the nature of folk psychological states, ranging from eliminativism, to dispositionalism, to representationalsim. This chapter explains how those different ontological viewpoints bear on the project of explaining imagination. An important conclusion is that the explanations pursued in this book do not assume or require the existence of mental representations of any sort and thus should be of interest to theorists with quite different commitments concerning folk psychological ontology. However, in some cases, when assessing competing arguments, it will be essential to grasp the difference between “heavy-duty” (representationalist) views of folk psychological states and “light-duty” (dispositionalist) views.

How to Improve Light Duty Diesel Based on Heavy Duty Diesel Thermodynamic Analysis?

2013 ◽  
Author(s):  
Matthieu Lecompte ◽  
Louis-Marie Malbec ◽  
Gregory Font ◽  
Bruno Walter
Keyword(s):  
Thermodynamic Analysis ◽  
Heavy Duty ◽  
Light Duty ◽  
Heavy Duty Diesel

scholarly journals Benefits of Electrified Powertrains in Medium- and Heavy-Duty Vehicles

2020 ◽  
Vol 11 (1) ◽  
pp. 12
Author(s):  
Ram Vijayagopal ◽  
Aymeric Rousseau
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Fuel Saving ◽  
Heavy Duty ◽  
Protection Agency ◽  
Light Duty ◽  
Design Choice ◽  
The Us ◽  
Light Duty Vehicles ◽  
Heavy Duty Vehicles

The benefits of electrified powertrains for light-duty vehicles are well understood, however sufficient published information is not available on the benefits of advanced powertrains on the various types of medium and heavy duty vehicles. Quantifying the benefits of powertrain electrification will help fleet operators understand the advantages or limitations in adopting electrified powertrains in their truck fleets. Trucks vary in size and shape, as they are designed for specific applications. It is necessary to model each kind of truck separately to understand what kind of powertrain architecture will be feasible for their daily operations. This paper examines 11 types of vehicles and 5 powertrain technology choices to quantify the fuel saving potential of each design choice. This study uses the regulatory cycles proposed by the US Environmental Protection Agency (EPA) for measuring fuel consumption.

scholarly journals Particulate emissions of a modern diesel passenger car under laboratory and real-world transient driving conditions

2020 ◽  
Vol 265 ◽  
pp. 114948 ◽  
Author(s):  
Hugo Wihersaari ◽  
Liisa Pirjola ◽  
Panu Karjalainen ◽  
Erkka Saukko ◽  
Heino Kuuluvainen ◽  
...  
Keyword(s):  
Real World ◽  
Particulate Emissions ◽  
Passenger Car ◽  
Driving Conditions
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