In this work very rich premixed laminar spherical flame kernels of hydrocarbon-air combustible mixtures were experimentally and numerically investigated under microgravity conditions. These microgravi....
A direct comparison of engine performance and stability is made between two different systems for igniting gasoline and air mixtures in an internal combustion (IC) engine. A conventional spark ignitio....
The burn rate and the instantaneous in-cylinder heat transfer have been studied experimentally in a spray-guided direct-injection spark-ignition engine with three different fuels: gasoline, iso-octane....
A newly developed small-sized IES (inductive energy storage) circuit with static induction thyristor at turn-off action was successfully applied to an ignition system. This IEC circuit can generate re....
Along with the recent growing concern about global environmental pollution, there has been a movement in automotive engines toward lower fuel consumption, lower emissions, and high output. Accordingly....
It is well known that ultra-lean combustion can result in higher thermal efficiency, better fuel economy, and greatly reduced NOx emissions. Accomplishing ultra-lean combustion is very difficult with ....
A satisfactory answer to the future severe normative on emissions and to the market request for spark ignition engines seems to be the use of downsized engines for passenger cars. Downsizing permits t....
Novel combustion technologies, which de-throttle the gasoline spark ignition (SI) engine, show high potential in reducing the fuel consumption. Technologies like variable valve actuation and/or gasoli....
Future pressures to reduce the fuel consumption of passenger cars may require the exploitation of alternative combustion strategies for gasoline engines to replace, or use in combination with the conv....
The work was concerned with applying cooled EGR for improved high load fuel economy and reduced pollutant emissions in a turbocharged gasoline engine. While the thermodynamic benefits of EGR were clea....
This research aims to obtain fundamentals regarding overall combustion characteristics of pre-mixed and direct injected type CNG fuel inside a constant volume chamber. A visualization technique was in....
Ethanol based fuels have seen increased use in recent years due to their renewable nature as well as increased governmental regulatory mandates. While offering performance advantages over gasoline, es....
One-dimensional single-zone and two-zone analyses have been exercised to calculate the mass fraction burned in an engine operating on ethanol/gasoline-blended fuels using the cylinder pressure and vol....
Companion empirical and analytical studies were conducted to assess the feasibility and constraints (hardware and combustion perspectives) associated with operating a Spark Ignition Direct-Injection (....
This paper presents the results of an experimental activity carried out on a two-stroke SI engine for moped (with a displacement 50 cm3) fueled alternatively by gasoline and natural gas. The effect of....
Global ethanol trade is forecast to increase 25-fold by 2020. Most of it will be blended with gasoline to make biofuel. However, blending ethanol with gasoline has a profound effect on the evaporation....
Given the fact that, in an endeavor to achieve the goals of engineering for a trade-off between cleaning up exhaust emissions and maximizing fuel economy, two main paths are being followed in advancin....
The purpose of this paper is to investigate the air/fuel mixture formation and combustion characteristics in a spray-guided GDI engine using a commercial code, STAR-CD. This engine adopted the outward....
Flash boiling conditions, where the fuel is superheated with respect to cylinder pressure, are often found in gasoline direct injection engines. This phenomenon affects the flowrate of the fuel and ca....
The aim of this study is to demonstrate the concept of gasoline lift-off spray combustion in which the burning velocity is controlled by the rate of mixture supply to the flame zone. With this concept....
