Impact of spray-wall interaction on the in-cylinder spatial unburned hydrocarbon distribution of a gasoline partially premixed combustion engine

2020 ◽  
Vol 215 ◽  
pp. 157-168 ◽  
Author(s):  
Vallinayagam Raman ◽  
Qinglong Tang ◽  
Yanzhao An ◽  
Hao Shi ◽  
Priybrat Sharma ◽  
...  
Keyword(s):  
Combustion Engine ◽  
Premixed Combustion ◽  
Unburned Hydrocarbon ◽  
Partially Premixed Combustion ◽  
Partially Premixed ◽  
Wall Interaction ◽  
Hydrocarbon Distribution

Investigation on the Impact of Fuel Properties on Partially Premixed Combustion Characteristics in a Light Duty Diesel Engine

2012 ◽  
Author(s):  
Hadeel Solaka ◽  
Martin Tunér ◽  
Bengt Johansson
Keyword(s):  
Pressure Rise ◽  
Combustion Characteristics ◽  
Premixed Combustion ◽  
Unburned Hydrocarbon ◽  
Light Duty ◽  
Start Of Injection ◽  
Partially Premixed Combustion ◽  
Rise Rate ◽  
Partially Premixed ◽  
The Impact

The impact of fuel composition on the emission performance and combustion characteristics for partially premixed combustion (PPC) were examined for four fuels in the gasoline boiling range together with Swedish diesel MK1. Experiments were carried out at 8 bar IMEPg and 1500 rpm with 53±1% EGR and λ = 1.5. This relation gave inlet mole fractions of approximately 5% CO2 and 13% O2. The combustion phasing was adjusted by means of start of injection (SOI), for all fuels, over the range with stable combustion and acceptable pressure rise rate combined with maintained λ, EGR ratio, inlet pressure, and load. The operating range was limited by combustion instability for the high RON fuels, while MK1 and the low RON fuels could be operated over the whole MBT plateau. The largest difference in engine-out emissions between the fuels was the filtered smoke number (FSN), as the gasoline fuels produced a much lower FSN value than MK1. Higher RON value gave higher levels of carbon monoxide (CO) and unburned hydrocarbon (HC) for the gasoline fuels, while MK1 had the lowest levels of these emissions.

Analysis of a Two-stroke Partially Premixed Combustion Engine

MTZ worldwide ◽  
2016 ◽  
Vol 77 (12) ◽  
pp. 52-55
Author(s):  
Ricardo Novella ◽  
Jesus Benajes ◽  
Pascal Tribotté ◽  
Frédéric Ravet
Keyword(s):  
Combustion Engine ◽  
Premixed Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed

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

Partially Premixed Combustion Application for Diesel Power Improvement

2017 ◽  
Author(s):  
Michael Walker ◽  
Robert Kelso ◽  
Kevin Bowes ◽  
Len Hamilton ◽  
Dianne Luning Prak ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Jet Fuel ◽  
Premixed Combustion ◽  
Intake Manifold ◽  
Diesel Combustion ◽  
Unburned Hydrocarbon ◽  
Advanced Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed ◽  
Start Of Combustion

A partially premixed combustion (PPC) approach was applied in a single cylinder diesel research engine in order to characterize engine power improvements. PPC is an alternative advanced combustion approach that generally results in lower engine-out soot and NOx emission, with a moderate penalty in engine-out unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions. In this study PPC is accomplished with a minority fraction of jet fuel injected into the intake manifold, while the majority fraction of jet fuel is delivered directly to the combustion chamber near the start of combustion (SOC). Four compression ratios (CR) were studied. Exhaust emissions plus exhaust opacity and particulate measurements were performed during the experiments in addition to fast in-cylinder combustion metrics. It was seen that as CR increased the soot threshold equivalence ratio decreased for conventional diesel combustion, however this afforded an increased opportunity for higher levels of port injected fuel leading to power increases from 5 to 23% as CR increased from 14 to 21.5. PPC allowed for these power increases (defined by a threshold opacity level of 3%) due to smaller particles (and lower overall number of particles) in the exhaust that influence measured opacity less significantly than larger and more numerous conventional diesel combustion exhaust particulates. Carbon monoxide levels at the higher PPC driven power levels were only modestly higher, although NOx was generally lower due to the overall enriched operation.

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
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