An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion

2010 ◽  
Author(s):  
Vittorio Manente ◽  
Claes-Goeran Zander ◽  
Bengt Johansson ◽  
Per Tunestal ◽  
William Cannella
Keyword(s):  
Internal Combustion Engine ◽  
High Efficiency ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Premixed Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed ◽  
Engine Concept

High efficient internal combustion engine using partially premixed combustion with multiple injections

2019 ◽  
Vol 233-234 ◽  
pp. 516-523 ◽  
Author(s):  
Lianhao Yin ◽  
Marcus Lundgren ◽  
Zhenkan Wang ◽  
Panagiota Stamatoglou ◽  
Mattias Richter ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Premixed Combustion ◽  
Multiple Injections ◽  
Partially Premixed Combustion ◽  
High Efficient ◽  
Partially Premixed

Characterization of Partially Premixed Combustion With Ethanol: EGR Sweeps, Low and Maximum Loads

2010 ◽  
Vol 132 (8) ◽  
Author(s):  
Vittorio Manente ◽  
Bengt Johansson ◽  
Pert Tunestal
Keyword(s):  
High Efficiency ◽  
Pressure Rise ◽  
Premixed Combustion ◽  
Maximum Pressure ◽  
Pressure Rise Rate ◽  
Start Of Injection ◽  
Partially Premixed Combustion ◽  
Rise Rate ◽  
Partially Premixed ◽  
Gas Recirculation

Exhaust gas recirculation (EGR) sweeps were performed on ethanol partially premixed combustion (PPC) to show different emission and efficiency trends as compared with diesel PPC. The sweeps showed that when the EGR rate is increased, the efficiency does not diminish, HC trace is flat, and CO is low even with 45% of EGR. NOx exponentially decreases by increasing EGR while soot levels are nearly zero throughout the sweep. The EGR sweeps underlined that at high EGR levels, the pressure rise rate is a concern. To overcome this problem and keep high efficiency and low emissions, a sweep in the timing of the pilot injection and pilot-main ratio was done at ∼16.5 bars gross IMEP. It was found that with a pilot-main ratio of 50:50, and by placing the pilot at −60 with 42% of EGR, NOx and soot are below EURO VI levels; the indicated efficiency is 47% and the maximum pressure rise rate is below 10 bar/CAD. Low load conditions were examined as well. It was found that by placing the start of injection at −35 top dead center, the efficiency is maximized, on the other hand, when the injection is at −25, the emissions are minimized, and the efficiency is only 1.64% lower than its optimum value. The idle test also showed that a certain amount of EGR is needed in order to minimize the pressure rise rate.

Development of a High-Efficiency, Low-Cost Hybrid SOFC/Internal Combustion Engine Power Generator

2021 ◽  
Vol MA2021-03 (1) ◽  
pp. 35-35
Author(s):  
Rob Braun ◽  
Gus Floerchinger ◽  
David Wahlstrom ◽  
Neal P. Sullivan ◽  
Tyrone Vincent ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
High Efficiency ◽  
Combustion Engine ◽  
Low Cost ◽  
Internal Combustion ◽  
Power Generator ◽  
Engine Power

Characterization of Partially Premixed Combustion With Ethanol: EGR Sweeps, Low and Maximum Loads

2009 ◽  
Author(s):  
Vittorio Manente ◽  
Bengt Johansson ◽  
Pert Tunestal
Keyword(s):  
High Efficiency ◽  
Pressure Rise ◽  
Premixed Combustion ◽  
Maximum Pressure ◽  
Pressure Rise Rate ◽  
Partially Premixed Combustion ◽  
Rise Rate ◽  
Low Load ◽  
Partially Premixed

EGR sweeps were performed on Ethanol Partially Premixed Combustion, PPC, to show different emission and efficiency trends as compared to Diesel PPC. The sweeps showed that increasing the EGR rate the efficiency does not diminish, HC trace is flat and CO is low even with 45% of EGR. NOx exponentially decreases by increasing EGR while soot levels are nearly zero throughout the sweep. The EGR sweeps underlined that at high EGR levels, the pressure rise rate is a concern. To overcome this problem and keep high efficiency and low emissions a sweep in timing of the pilot injection and pilot-main ratio was done at ∼16.5 bar gross IMEP. It was found that with a pilot-main ratio of 50–50 and by placing the pilot at −60 with 42% of EGR, NOx and soot are below EURO VI levels, the indicated efficiency is 47% and the maximum pressure rise rate is below 10 bar/CAD. Low load conditions were examined as well. It was found that by placing the SOI at −35 TDC the efficiency is maximized on the other hand when the injection is at −25 the emissions are minimized and the efficiency is only 1.64% lower than its optimum value. The idle test also showed that a certain amount of EGR is needed in order to minimize the pressure rise rate.

scholarly journals High-Efficiency Internal Combustion Engine with Exergy Regenerating Combustion.

1999 ◽  
Vol 65 (636) ◽  
pp. 2929-2936 ◽  
Author(s):  
Ryozo ECHIGO ◽  
Motohiro SAITO ◽  
Hideo YOSHIDA ◽  
Kenichi P. KOBAYASHI
Keyword(s):  
Internal Combustion Engine ◽  
High Efficiency ◽  
Combustion Engine ◽  
Internal Combustion
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