A numerical and experimental study on the optimal design for the intake system of the MPI spark ignition engines

KSME Journal ◽  
1996 ◽  
Vol 10 (4) ◽  
pp. 471-479 ◽  
Author(s):  
Jae-soon Lee ◽  
Keon-Sik Yoon
2016 ◽  
Vol 822 ◽  
pp. 198-205
Author(s):  
Nikolaos Cristian Nutu ◽  
Constantin Pana ◽  
Alexandru Dobre ◽  
Niculae Negurescu ◽  
Alexandru Cernat

The increasing price of the fuels and tightening of the pollution rules requires the use of some efficient fuelling methodes with altenative fuels for diesel engines. Fuelling with LPG of a diesel engine is a viable sollution, considering that it can be used the infrastructure for distribution and storage already used for spark ignition engines. In this work are presented results of theoretical and experimental investigations of a truck diesel engine fuelled with LPG by diesel-LPG methode. The main objective research is the decrease of the nitric oxides emissions with the premise that the engine power is maintained at the same level like in the case of the standard engine, fuelled only with diesel fuel.


1999 ◽  
Vol 77 (7) ◽  
pp. 1177-1190 ◽  
Author(s):  
S Taconnet ◽  
Y Simon ◽  
G Scacchi ◽  
F Baronnet

The different behaviour of hydrocarbons with respect to autoignition phenomena is, at present, not yet fully explained. We have therefore investigated the oxidation of two alkanes that have different octane numbers: neopentane (85.5) and isopentane (92.3), to obtain a better understanding of their reaction mechanisms, in particular, those reactions that are responsible for the onset of knock in spark ignition engines. The experimental study was performed at 873 K in a jet-stirred flow reaction vessel. The oxidation mechanisms were simplified by using the CHEMKIN programme of simulation of reaction mechanisms. These mechanisms were compared to those accounting for the oxidation of n-pentane, cyclopentane, n-heptane, and isooctane that we have previously studied. This comparison shows that the different behaviour of these hydrocarbons can be explained, at least in part, by the presence, in the reaction medium, of resonance-stabilized radicals.Key words: oxidation, neopentane, isopentane, autoignition, modelling.


1985 ◽  
Vol 51 (465) ◽  
pp. 1582-1590 ◽  
Author(s):  
Seiichi SHIGA ◽  
Michikata KONO ◽  
Kazuo IINUMA

2014 ◽  
Vol 158 (3) ◽  
pp. 80-92
Author(s):  
Martynika PAŁUCHOWSKA ◽  
Zbigniew STĘPIEŃ ◽  
Grażyna ŻAK

This paper presents the progress in the introduction of fuels of higher content of ethanol and vehicle models adapted for fuelling with this type of fuels (FFV). Trends in the European legislation related to the standards of spark ignition engines exhaust emissions have been discussed. The results of a study of unleaded gasoline E10 proneness to forming deposits on the test engine intake valves in accordance with CEC F-20-98 test procedure have been presented. The paper also presents the results of a study of ethanol E85 proneness to forming deposits on the elements of the engine intake system when it contained inappropriate detergent additives.


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