Evaluation of the Operating Range of Partially Premixed Combustion in a Multi Cylinder Heavy Duty Engine with Extensive EGR

2009 ◽  
Author(s):  
Magnus Lewander ◽  
Bengt Johansson ◽  
Per Tunestål ◽  
Nathan Keeler ◽  
Simon Tullis ◽  
...  
Keyword(s):  
Premixed Combustion ◽  
Heavy Duty ◽  
Operating Range ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Effects of Different Type of Gasoline Fuels on Heavy Duty Partially Premixed Combustion

2009 ◽  
Vol 2 (2) ◽  
pp. 71-88 ◽  
Author(s):  
Vittorio Manente ◽  
Bengt Johansson ◽  
Per Tunestal ◽  
William Cannella
Keyword(s):  
Premixed Combustion ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Medium and High Load Performance of Partially Premixed Combustion in a Wave-Piston Multi-Cylinder Engine With Diesel and PRF70 Fuel

2018 ◽  
Author(s):  
Kenan Muric ◽  
Per Tunestal ◽  
Ingemar Magnusson
Keyword(s):  
Heat Transfer ◽  
High Load ◽  
Single Stage ◽  
Premixed Combustion ◽  
Nox Emissions ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Fuel Mixing ◽  
Partially Premixed ◽  
Soot Emissions

European and US emission legislation on diesel compression ignition engines has pushed for the development of new types of combustion concepts to reduce hazardous pollutants and increase fuel efficiency. Partially premixed combustion (PPC) has been proposed as one solution to future restrictions on emissions while providing high gross indicated efficiency. The conceptual idea is that the time for the mixing between fuel and air will be longer when ignition delay is increased by addition of high amounts of exhaust gas recirculation (EGR). Increased air-fuel mixing time will lead to lower soot emissions and the high EGR rates will reduce both NOx emissions and combustion flame temperature, which decreases the overall heat transfer. Previous research in heavy-duty gasoline PPC has mostly focused on emissions and efficiency at low and medium load in single-cylinder engines. In this paper a Volvo D13 heavy-duty single-stage VGT engine with a newly developed Wave piston was run at medium and high engine load with a variation in fuel injection pressure. The Wave piston was specifically designed to enhance air-fuel mixing and increase combustion velocity. Two fuels were used in the experiments, PRF70 and Swedish MK1 diesel. Soot-NOx trade-off, combustion characteristics and efficiency were compared for both fuels at 1000 and 2000 Nm engine torque. The results show that at high load the combustion behavior with respect to rate of heat release and heat transfer is very similar between the fuels and no major difference in indicated efficiency could be observed. Peak gross indicated efficiencies were reported to be around 49 % for both fuels at 1000 Nm and slightly above 50 % at 2000 Nm. The new Wave piston made it possible to obtain 1 g/kWh engine-out NOx emissions while still complying with Euro VI legislation for particulate emissions. Soot emissions were generally lower for PRF70 compared to MK1 diesel. We could also conclude that gas exchange performance is a major issue when running high load PPC where high Λ and EGR is required. The single-stage VGT turbocharger could not provide sufficient boost to keep Λ above 1.3 at high EGR rates. This penalized combustion efficiency and soot emissions when reaching Euro VI NOx emission levels (0.3–0.5 g/kWh).

scholarly journals Investigation on partially premixed combustion fueled with gasoline and PODE blends in a multi-cylinder heavy-duty diesel engine

Fuel ◽  
2017 ◽  
Vol 193 ◽  
pp. 101-111 ◽  
Author(s):  
Jialin Liu ◽  
Hongyan Shang ◽  
Hu Wang ◽  
Zunqing Zheng ◽  
Qiping Wang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Premixed Combustion ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Heavy Duty Diesel Engine ◽  
Partially Premixed ◽  
Heavy Duty Diesel

Evaluation of Different Turbocharger Configurations for a Heavy-Duty Partially Premixed Combustion Engine

2017 ◽  
Vol 10 (5) ◽  
pp. 2575-2595 ◽  
Author(s):  
Erik Svensson ◽  
Lianhao Yin ◽  
Per Tunestal ◽  
Marcus Thern ◽  
Martin Tuner
Keyword(s):  
Combustion Engine ◽  
Premixed Combustion ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Investigation of the Combustion Characteristics with Focus on Partially Premixed Combustion in a Heavy Duty Engine

2008 ◽  
Vol 1 (1) ◽  
pp. 1063-1074 ◽  
Author(s):  
Magnus Lewander ◽  
Kent Ekholm ◽  
Bengt Johansson ◽  
Per Tunestal ◽  
Nebojsa Milovanovic ◽  
...  
Keyword(s):  
Combustion Characteristics ◽  
Premixed Combustion ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Partially Premixed
Sign in / Sign up

Export Citation Format

Share Document