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A new criterion to determine the start of combustion in diesel engines
Katrašnik, Tomaž (Avtor), Trenc, Ferdinand (Avtor), Rodman Oprešnik, Samuel (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://dx.doi.org/10.1115/1.2179471 Novo okno

Izvleček
A new criterion for the determination of the start of combustion (SOC) from the diesel engine in-cylinder pressure diagram was developed. It is defined asthe maximum of the third-order derivative of the cylinder pressure with respect to the crank angle. This criterion declares SOC more precisely than other previously published criteria based on pressure diagnostics. This fact was proven analytically and was discernable from the analysis of the experimental data. Besides its accuracy it is also robust enough to allow automatic evaluation of the SOC during processing of the pressure data for a large number of cycles. By applying the first law of thermodynamics analysis to the engine cylinder it was discovered that the third-order derivative of the in-cylinder pressure with respect to the crank angle is the most suitable criterion for determination of the SOC from the in-cylinder pressure diagram. Subsequently, the criterion was validated through experimental data analysis of the in-cylinder pressure diagrams for various engine speeds and loads. In order to evaluate the rate of heat release (ROHR), which formed the base for the experimental validation, in-cylinder pressure diagrams were processed witha computer code based on the first law of thermodynamics. The cylinder pressure was measured with an advanced piezoelectric sensor at the resolution 0.1 deg CA. Top dead center was determined with the capacitive top dead centersensor. Due to the analytic foundation of the developed method and its validation through highly accurate experimental data it can be concluded that new criterion is credible for the determination of the SOC.

Jezik:Angleški jezik
Ključne besede:dizelski motorji, cilindri motorjev, zgorevanje, termodinamične analize, meritve tlakov, piezoelektrični senzorji
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2006
Št. strani:str. 928-933
Številčenje:Letn. 128, št. 4
UDK:629:621.4
ISSN pri članku:0742-4795
COBISS.SI-ID:9552155 Povezava se odpre v novem oknu
Število ogledov:458
Število prenosov:156
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:Journal of engineering for gas turbines and power
Skrajšan naslov:J. eng. gas turbine power
Založnik:American Society of Mechanical Engineers
ISSN:0742-4795
COBISS.SI-ID:6401543 Novo okno

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