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Showing 1 to 11 of 11 for “"GDI engine"”.
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Piston fuel film observations in an optical access GDI engine
… Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Combustion Visualization And Particulate Matter Emission Of A Gdi Engine By Using Gasoline And E85
<p>In order to increase engine efficiency as well as to reduce emission, optimizing combustion is always the challenge in research and product development. Gasoline direct injection (GDI) engines have been popularized due to its higher power density, fuel efficiency, and the possibility for …
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Effect of market fuel variation and cetane improvers on CAI combustion in a GDI engine
… conversion efficiency of internal combustion engines and simultaneously reducing their emissions. One promising technology is that of Controlled Auto Ignition (CAI) combustion. The lack of direct combustion control makes control of CAI combustion challenging. Practical implementation of CAI an …
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Computational Investigation of Ethanol and Bifuel Feasibility in Solstice Engine
A Gasoline Direct Injection (GDI) engine enables an increased fuel efficiency and higher power output than a conventional Port Fuel Injection (PFI) system. By injecting pressurized fuel straight into each cylinder of an internal-combustion engine, the degree of fuel atomization is increased, as …
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Application of Multidisciplinary Design Optimisation Frameworks for Engine Mapping and Calibration
With ever-increasing numbers of engine actuators to calibrate within increasingly stringent emissions legislation, the engine mapping and calibration task of identifying optimal actuator settings is much more difficult. The aim of this research is to evaluate the feasibility and effectiveness of …
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Investigations on the pollutant emissions of gasoline direct injection engines during cold-start
… downsized gasoline direct injection (GDI) engine provides a mature platform to achieve better fuel economy. For this reason, it is expected that the GDI engine will capture increasing shares of the market during the coming years. The in-cylinder liquid injection, though advantageous in …
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CFD Modelling of the Mixture Preparation in a Modern Gasoline Direct Injection Engine and Correlations with Experimental PN Emissions
… analysis of a modern gasoline direct injection (GDI) engine is carried out to reveal the connections between pre-combustion mixture indicators and PN emissions. Firstly, a novel calibration methodology is introduced to accurately predict the widely used characteristics of the high-pressure fuel …
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Multi-Physics Co-Simulation of Engine Combustion and Exhaust Aftertreatment system: Development of a Multi-Physics Co-Simulation Framework of Engine Combustion and Exhaust Aftertreatment for Model-Based System Optimisation
… detailed chemistry models in internal combustion engine simulations is becoming mandatory as new combustion strategies and lower global emissions limits are setting the path towards a more efficient engine cycle simulation tool. In this report, the computational capability of the stochastic-based …
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Spray characterization of flex-fuel gasoline di injectors and spray interaction with charge motion in a variable valve actuation engine
… study is to understand the characteristics of GDI sprays and behavior of in-cylinder charge motion in a GDI engine which is equipped with variable valve actuation. High speed spray visualization in a spray chamber was conducted for a study of spray development. By Schlieren visualization …
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Ash impacts on gasoline particulate filter performance and service life
… increased use of gasoline direct-injection (GDI) engines in light-duty vehicles (LDV). Separate new regulations that aim to reduce particulate emissions to address air pollution concerns are taking effect concurrent with greenhouse gas limitations in both jurisdictions. GDI engines are proven …
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Effects of engine operating conditions on catalyst light-off and combustion variability
… targets for passenger car internal combustion engines as well as increasingly stringent emissions legislation around the globe require innovative development approaches for future engine generations. At the same time, trade-offs can limit important design parameters necessitating fundamental …