...Enrico Corti; Claudio Forte One of the most effective factors influencing performance, efficiency, and pollutant emissions of internal combustion engines is the combustion phasing: In gasoline engines, electronic control units (ECUs) manage the spark advance (SA) in order to set the optimal...

.... , 1991 , Viscous Fluid Flow , 2nd ed. , McGraw-Hill , New York . Buttsworth , D. R. , 2002 , “ Spark Ignition Internal Combustion Engine Modelling Using Matlab ,” Faculty of Engineering and Surveying Technical Reports, University of Southern Queensland, Report No. TR-2002-02...

...Rocco Piccione; Sergio Bova Experimental measurements have been taken on a production four-cylinder, multipoint (fuel) injection spark-ignition engine, 1.2 dm 3 displacement with a four-valve per cylinder aluminum head, and a 60 kW at 5500 rpm rated power. The aim of the investigation...

...Damian E. Ramajo; Norberto M. Nigro Numerical and experimental techniques were applied in order to study the in-cylinder flow field in a commercial four-valve per cylinder spark ignition engine. Investigation was aimed at analyzing the generation and evolution of tumble-vortex structures during...

...Hailin Li; Ghazi A. Karim; A. Sohrabi The knock and combustion characteristics of CO, H 2 , CH 4 , and their mixtures were determined experimentally in a variable compression ratio spark ignition (SI) cooperative fuel research (CFR) engine. The significant effects of gaseous fuel mixtures...

...A. Beccari; S. Beccari; E. Pipitone It is well known that the spark advance is one of the most important parameters influencing the efficiency of a spark ignition engine. A change in this parameter causes a shift in the combustion phase, whose optimal position, with respect to the piston motion...

...Emiliano Pipitone The closed-loop control of internal combustion engine spark timing may be accomplished by means of a combustion phase indicator, i.e., a parameter, derived from in-cylinder pressure analysis, whose variation is mainly referable to combustion phase shift and assumes a fixed...

...C. Stuart Daw; K. Dean Edwards; Robert M. Wagner; Johney B. Green, Jr. Spark assist appears to offer considerable potential for increasing the speed and load range over which homogeneous charge compression ignition (HCCI) is possible in gasoline engines. Numerous experimental studies...

...D. P. Gardiner; G. Wang; M. F. Bardon; M. LaViolette; W. D. Allan It has been demonstrated by previous researchers that an approximate value of the bulk flow velocity through the spark plug gap of a running spark ignition engine may be deduced from the voltage and current wave forms of the spark...

... after cold throttle transients is found to be comparable to steady-state torque due to allowable spark advance. However, cold transients produce up to four times the unburned hydrocarbons when compared to steady-state operation. Finally, the x -tau fuel control model is evaluated in this challenging...

... both time and money and provides better and additional understanding where the experimental facilities are limited. A spark ignition (SI) engine simulation tool (ISIS) is used in this present study to simulate the performance and emissions of SI engines, operated on alternative fuels such as biogas...

...Hailin Li; Ghazi A. Karim Hydrogen is well recognized as a suitable fuel for spark-ignition engine applications that has many unique attractive features and limitations. It is a fuel that can continue potentially to meet the ever-increasingly stringent regulations for exhaust and greenhouse gas...

...N. Cavina; F. Ponti This paper presents an original approach to estimate the air-fuel ratio (AFR) of the mixture that burned inside a given cylinder of a spark-ignited (SI) internal combustion engine, using the information hidden in the corresponding in-cylinder pressure signal. In modern closed...

...H. Willems; R. Sierens The initial size and growth of the plasma and flame kernel just after spark discharge in S.I. engines determines if the flame becomes self-sustainable or extinguishes. On the other hand, the development of the kernel during the initial phases has non-negligible influences...