Nano-particle emission characteristics of European and Worldwide Harmonized test cycles for heavy-duty diesel engines

2011 ◽  
Vol 12 (3) ◽  
pp. 331-337 ◽  
Author(s):  
C. L. Myung ◽  
J. Kim ◽  
S. Kwon ◽  
K. Choi ◽  
A. Ko ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Particle Emission ◽  
Emission Characteristics ◽  
Nano Particle ◽  
Heavy Duty ◽  
Heavy Duty Diesel

scholarly journals Analysis and Multi-Parametric Optimisation of the Performance and Exhaust Gas Emissions of a Heavy-Duty Diesel Engine Operating on Miller Cycle

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3724
Author(s):  
Charalampos Georgiou ◽  
Ulugbek Azimov
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
Miller Cycle ◽  
Heavy Duty ◽  
Gas Emissions ◽  
Performance And Emission ◽  
Heavy Duty Diesel ◽  
Exhaust Gas Emissions

A major issue nowadays that concerns the pollution of the environment is the emissions emerging from heavy-duty internal combustion engines. Such concern is dictated by the fact that the electrification of heavy-duty transport still remains quite challenging due to limitations associated with mileage, charging speed and payload. Further improvements in the performance and emission characteristics of conventional heavy-duty diesel engines are required. One of a few feasible approaches to simultaneously improve the performance and emission characteristics of a diesel engine is to convert it to operate on Miller cycle. Therefore, this study was divided into two stages, the first stage was the simulation of a heavy-duty turbocharged diesel engine (4-stroke, 6-cylinder and 390 kW) to generate data that will represent the reference model. The second stage was the application of Miller cycle to the conventional diesel engine by changing the degrees of intake valve closure and compressor pressure ratio. Both stages have been implemented through the specialist software which was able to simulate and represent a diesel engine based on performance and emissions data. An objective of this extensive investigation was to develop several models in order to compare their emissions and performances and design a Miller cycle engine with an ultimate goal to optimize diesel engine for improved performance and reduced emissions. This study demonstrates that Miller cycle diesel engines could overtake conventional diesel engines for the reduced exhaust gas emissions at the same or even better level of performance. This study shows that, due to the dependence of engine performance on complex multi-parametric operation, only one model achieved the objectives of the study, more specifically, engine power and torque were increased by 5.5%, whilst nitrogen oxides and particulate matter were decreased by 30.2% and 5.5%, respectively, with negligible change in specific fuel consumption and CO2, as average values over the whole range of engine operating regimes.

scholarly journals Experimental study on the effects of blending PODEn on performance, combustion and emission characteristics of heavy-duty diesel engines meeting China VI emission standard

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuwei Zhao ◽  
Cong Geng ◽  
Weibo E ◽  
Xiaoquan Li ◽  
Peiyuan Cheng ◽  
...  
Keyword(s):  
Heat Release ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Cetane Number ◽  
Emission Characteristics ◽  
Heavy Duty ◽  
High Oxygen Content ◽  
Emission Standards ◽  
Heavy Duty Diesel

AbstractTo study the influence of diesel fuel blended with polyoxymethylene dimethyl ethers (PODEn), a new alternative fuel with a high oxygen content and large cetane number, on the combustion characteristics, fuel economies, and emission characteristics of heavy-duty diesel engines that meet China VI emission standards, relevant tests were conducted on a supercharged intercooled high-pressure common-rail diesel engine. The PODEn were blended with diesel fuel at three different ratios (volume fractions of 10%, 20%, and 30%). The test results showed that the PODEn could optimize the combustion process of diesel engines that met the China VI emission standards, effectively improve the thermal efficiencies of diesel engines, and reduce the emissions of hydrocarbon (HC), carbon monoxide (CO), and soot. With an increase in the PODEn blending ratio, the peak values of the in-cylinder pressure, average in-cylinder temperature, and instantaneous heat release rate gradually decreased, and each peak progressively moved forward. As the start of combustion gradually moved forward, the combustion duration was shortened by 0.7–2.8°CA, the heat release process became more concentrated, and the effective thermal efficiency was increased by up to 2.57%. The effective fuel consumption gradually increased, yet the equivalent effective fuel consumption gradually decreased, with the largest drop being as high as 4.55%. The nitrogen oxides (NOx) emission increased slightly, and the emissions of HC, CO, and soot gradually decreased. The emissions of CO and soot declined significantly under high-speed and high-load conditions, with the highest reductions reaching 66.2% and 76.3%, respectively.

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

Can Euro V heavy-duty diesel engines, diesel hybrid and alternative fuel technologies mitigate NO X emissions? New evidence from on-road tests of buses in China

2014 ◽  
Vol 132 ◽  
pp. 118-126 ◽  
Author(s):  
Shaojun Zhang ◽  
Ye Wu ◽  
Jingnan Hu ◽  
Ruikun Huang ◽  
Yu Zhou ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Alternative Fuel ◽  
Heavy Duty ◽  
Heavy Duty Diesel ◽  
New Evidence

Development of Ceramic Coated Exhaust Manifolds for Heavy Duty Diesel Engines

1991 ◽  
Author(s):  
K. Itoh ◽  
K. Ohtsuka ◽  
T. Nagata ◽  
M. Nakamizo ◽  
K. Morikawa ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Heavy Duty ◽  
Heavy Duty Diesel
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