A Method of Reducing the Exhaust Emissions from DI Diesel Engines by the Introduction of a Fuel Cut Off System During Cold Start

2001 ◽  
Author(s):  
Piotr Bielaczyc ◽  
Jerzy Merkisz ◽  
Jacek Pielecha
Keyword(s):  
Diesel Engines ◽  
Cold Start ◽  
Exhaust Emissions

scholarly journals The influence of the heating time of a catalyst-covered glow plug on the exhaust emissions from a diesel engine

2021 ◽  
Author(s):  
Monika Andrych-Zalewska ◽  
Jerzy Merkisz ◽  
Jacek Pielecha
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Diesel Engines ◽  
Cold Start ◽  
Exhaust Emissions ◽  
Heating Time ◽  
Glow Plug ◽  
Engine Start

The paper discusses the application of an in-cylinder catalyst allowing a reduction of the exhaust emissions from a diesel engine. Its placement in the combustion chamber, the area where the process of combustion takes place, allows reducing the emissions (carbon monoxide, hydrocarbons, particulate matter) ‘at source’. The paper presents the possibilities of boosting the efficiency of catalysts in diesel engines by extending the time of heating of a glow plug (the catalyst applied on the glow plug). The tests were performed for the following conditions: no heating (marked 0+0), glow plug heating for 60 s after engine start (marked 0+60), glow plug heating prior to engine start for 60 s and glow plug heating for 60 s after engine cold start (marked 60+60). An improvement in the efficiency of oxidation of the exhaust components was observed as the glow plug heating time increased.

scholarly journals Cold start emissions of passenger cars with gasoline and diesel engines in Real Driving Emissions tests

2019 ◽  
Vol 179 (4) ◽  
pp. 160-168 ◽  
Author(s):  
Jacek PIELECHA ◽  
Jerzy MERKISZ ◽  
Karolina KURTYKA ◽  
Kinga SKOBIEJ
Keyword(s):  
Ambient Temperature ◽  
Diesel Engines ◽  
Test Procedure ◽  
Cold Start ◽  
Exhaust Emissions ◽  
Exhaust Emission ◽  
Passenger Cars ◽  
Compression Ignition Engines ◽  
Vehicle Operation ◽  
The Impact

Modernization of passenger cars and constant development of existing legislation lead to a reduction of exhaust emissions from these vehicles. In accordance with package 3 of the RDE test procedure, the European Commission has extended testing methods by including exhaust emissions during a cold start. The article compares the research results on the impact of ambient temperature during the cold start of spark-ignition and compression-ignition engines in road emission tests. The tests were carried out in line with the requirements of the RDE test procedure for passenger cars meeting the Euro 6d-Temp emissions standard. The obtained results were analyzed, i.e. there were compared the engine and vehicle operation parameters and the values of road exhaust emissions, during the cold start of gasoline and diesel engines at the ambient temperature of approximately 25oC.The summary presents the share of cold start phase of a passenger car (at the ambient temperature of around 25oC) for each exhaust emission compound in the urban part of the test, and in the entire RDE test, depending on the engine type used.

Environment-adaptive method to control intake preheating for diesel engines at cold-start conditions

Energy ◽  
2021 ◽  
pp. 120423
Author(s):  
Yikai Li ◽  
Dongfang Wang ◽  
Zhongjie Shi ◽  
Haiyan Chen ◽  
Fushui Liu
Keyword(s):  
Diesel Engines ◽  
Cold Start ◽  
Adaptive Method

A novel bio-nano emulsion fuel based on biodegradable nanoparticles to improve diesel engines performance and reduce exhaust emissions

2018 ◽  
Vol 125 ◽  
pp. 64-72 ◽  
Author(s):  
Ehsanollah Ettefaghi ◽  
Barat Ghobadian ◽  
Alimorad Rashidi ◽  
G. Najafi ◽  
Mohammad Hadi Khoshtaghaza ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Exhaust Emissions ◽  
Biodegradable Nanoparticles ◽  
Nano Emulsion

scholarly journals Influence of spray-glow plug configuration on cold start combustion for high-speed direct injection diesel engines

Energy ◽  
2011 ◽  
Vol 36 (9) ◽  
pp. 5486-5496 ◽  
Author(s):  
J.V. Pastor ◽  
V. Bermúdez ◽  
J.M. García-Oliver ◽  
J.G. Ramírez-Hernández
Keyword(s):  
Diesel Engines ◽  
High Speed ◽  
Direct Injection ◽  
Cold Start ◽  
Glow Plug

scholarly journals Optimization of the Performance of Marine Diesel Engines to Minimize the Formation of SOx Emissions

2020 ◽  
Vol 19 (3) ◽  
pp. 473-484
Author(s):  
Mina Tadros ◽  
Manuel Ventura ◽  
C. Guedes Soares
Keyword(s):  
Fuel Consumption ◽  
Diesel Engines ◽  
Engine Speed ◽  
Exhaust Emissions ◽  
Polynomial Equations ◽  
Marine Fuel ◽  
Marine Engines ◽  
Marine Diesel ◽  
Marine Applications ◽  
Generate Polynomial

Abstract Optimization procedures are required to minimize the amount of fuel consumption and exhaust emissions from marine engines. This study discusses the procedures to optimize the performance of any marine engine implemented in a 0D/1D numerical model in order to achieve lower values of exhaust emissions. From that point, an extension of previous simulation researches is presented to calculate the amount of SOx emissions from two marine diesel engines along their load diagrams based on the percentage of sulfur in the marine fuel used. The variations of SOx emissions are computed in g/kW·h and in parts per million (ppm) as functions of the optimized parameters: brake specific fuel consumption and the amount of air-fuel ratio respectively. Then, a surrogate model-based response surface methodology is used to generate polynomial equations to estimate the amount of SOx emissions as functions of engine speed and load. These developed non-dimensional equations can be further used directly to assess the value of SOx emissions for different percentages of sulfur of the selected or similar engines to be used in different marine applications.

Molecular Simulation of the Adsorption of Cold Start Hydrocarbons Emission from Diesel Engines in Zeolite

2013 ◽  
Vol 779-780 ◽  
pp. 521-524
Author(s):  
Yuan Wang Deng ◽  
Wei Han ◽  
Liang Yin
Keyword(s):  
Binary Mixtures ◽  
Adsorption Isotherms ◽  
Diesel Engines ◽  
Cold Start ◽  
Pure Component ◽  
Grand Canonical Monte Carlo ◽  
Adsorption Behaviors ◽  
Lta Zeolite ◽  
Gcmc Simulation ◽  
Grand Canonical

A better understanding of the adsorption behaviors of hydrocarbons on adsorbent would help trap the hydrocarbons emitted from diesel engines during cold start period more efficiently. In this paper, the adsorption behaviors of hydrocarbons in LTA zeolite was studied using Grand Canonical Monte Carlo (GCMC) simulation. The adsorption isotherms and mass clouds are obtained for both pure component and binary mixtures under certain temperatures. The adsorption isotherms reveal that the average loading of ethylene and propylene has the similar trend. Both of them increase with the increase of pressure and decrease significantly with the increase of temperature. The binary mixtures show competitive adsorption behavior. Propylene is adsorbed much more strongly than ethylene in LTA zeolite. The obtained mass clouds show that propylene distributes in both the α cage and β cage of the LTA zeolite, while ethylene distributes mainly in the β cage of the LTA zeolite.

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