An Investigation of Flame Speeds in a Spark Ignition Engine
Title | An Investigation of Flame Speeds in a Spark Ignition Engine PDF eBook |
Author | Thomas Joseph Dahm |
Publisher | |
Pages | 144 |
Release | 1957 |
Genre | Electric spark |
ISBN |
A Study of Flame Speed in a Spark Ignition Engine
Title | A Study of Flame Speed in a Spark Ignition Engine PDF eBook |
Author | Ka-Keung LEUNG |
Publisher | |
Pages | 0 |
Release | 1978 |
Genre | |
ISBN |
Initial Flame Speed in a Spark-ignition Engine
Title | Initial Flame Speed in a Spark-ignition Engine PDF eBook |
Author | Robert William Pratt |
Publisher | |
Pages | |
Release | 1940 |
Genre | |
ISBN |
Combustion Studies in a Spark-ignition Engine
Title | Combustion Studies in a Spark-ignition Engine PDF eBook |
Author | Halit Çakir |
Publisher | |
Pages | 122 |
Release | 1971 |
Genre | Internal combustion engines, Spark ignition |
ISBN |
An Investigation of the Variation of Flame Speed with Nominal Inlet Velocity in the Spark Ignition Engine
Title | An Investigation of the Variation of Flame Speed with Nominal Inlet Velocity in the Spark Ignition Engine PDF eBook |
Author | Charles C. Buik |
Publisher | |
Pages | 28 |
Release | 1945 |
Genre | Airplanes |
ISBN |
DEVELOPMENT OF A TURBULENT FLAME SPEED MODEL BASED ON FLAME STRETCH CONCEPT FOR SPARK IGNITION ENGINES
Title | DEVELOPMENT OF A TURBULENT FLAME SPEED MODEL BASED ON FLAME STRETCH CONCEPT FOR SPARK IGNITION ENGINES PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2017 |
Genre | |
ISBN |
Abstract : This is an MSc report to develop a turbulent combustion model and couple it with engine simulation software to improve its predictive capability. For liquid or gaseous fuels one of the most important quantities is the velocity at which the flame front propagates normal to itself and relative to the flow into the unburned mixture. In a non-turbulent mixture, flame propagation is laminar and the flame has smooth surface. However, in a turbulent flow field, the flame front is no longer smooth and the reaction zone is thicker than that in laminar case. According to Damkohler theory, the increase in flame front area due to turbulence causes to increase the flame speed. However, recent studies show that the ratio of turbulent to laminar flame speed (ST/SL) depends on both the relative increase in flame surface area as a result of turbulence, and the relative drop in local flame speed as a result of stretching. The proposed research will empirically study the effect of stretching on flame speed under engine-like conditions and develop a model for flame speed base on that. For this reason, flame surface area and speed will be found by processing high speed images which are taken from flame inside cylinder. Then, the developed combustion model will be coupled with GT-Power engine simulation software in order to, first, evaluate the developed model and then, improve the GT-Power predictive combustion capability. To specify initial conditions correctly, the initial swirl and tumble values will be measured by using the steady-flow-rig method. Finally, to verify the simulation and developed turbulent combustion model, a V-twin, four-stroke, air cooled, ECH 749 Kohler engine will be used.
A Preliminary Study of Flame Propagation in a Spark-ignition Engine
Title | A Preliminary Study of Flame Propagation in a Spark-ignition Engine PDF eBook |
Author | Addison May Rothrock |
Publisher | |
Pages | 11 |
Release | 1937 |
Genre | Flame |
ISBN |
The N.A.C.A. combustion apparatus was altered to operate as a fuel-injection, spark-ignition engine, and a preliminary study was made of the combustion of gasoline-air mixtures at various air-fuel ratios. Air-fuel ratios ranging from 10 to 21.6 were investigated. Records from an optical indicator and films from a high-speed motion-picture camera were the chief sources of data. Schlieren photography was used for an additional study.