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Automotive Engineering Commons

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Full-Text Articles in Automotive Engineering

Reduced Exhaust Emissions Through Blending N-Butanol With Ultra Low Sulfur Diesel And Synthetic Paraffinic Kerosene In Reactivity Controlled Compression Ignition Combustion, Remi Gaubert Jan 2018

Reduced Exhaust Emissions Through Blending N-Butanol With Ultra Low Sulfur Diesel And Synthetic Paraffinic Kerosene In Reactivity Controlled Compression Ignition Combustion, Remi Gaubert

Electronic Theses and Dissertations

Increasing restrictions on the emitted exhaust emissions in diesel engines are becoming a more challenging task than in previous years. An electronic common rail fuel injection system and a port fuel injection (PFI) system were developed for an experimental engine to research dual fuel combustion. The experimental research was conducted at 1500 rpm and 4, 5, and 6 bar indicated mean effective pressure (IMEP). n-Butanol was port fuel injected at a 60% by mass fraction coupled with direct injection (DI) of three fuels, including ultra-low sulfur diesel (ULSD RCCI), a 50-50 wt-% blend of ULSD and butanol (ULSD-Bu RCCI), and ...


Tribological Study On Plasma Electrolytic Oxidation Treatment In Al-Si Alloys For Engine Application, Hoda Eiliat Jul 2015

Tribological Study On Plasma Electrolytic Oxidation Treatment In Al-Si Alloys For Engine Application, Hoda Eiliat

Electronic Theses and Dissertations

Automotive industry strives to reach an optimum level of fuel economy. This can be achieved by overcoming two impacting factors on fuel consumption: weight and friction force. This research contributes to reduce both. The proposed surface treatment can replace cylinder liners of hypoeutectic aluminum silicon alloy engine blocks with a thin layer of ceramic oxide composed of alpha and gamma phases of Al2O3 and mullite. The coatings are achieved in an aqueous electrolytic bath with current densities of 0.1 to 0.2 A/cm2. Coatings produced in silicate based solutions have shown good adaptability to the counter surface with ...


Simulation Of A Regenerative Electromagnetic Vehicle Suspension, Fabio Tarantini Jan 2015

Simulation Of A Regenerative Electromagnetic Vehicle Suspension, Fabio Tarantini

Electronic Theses and Dissertations

In the last two decades, legislation that regulates carbon dioxide emissions are getting more and more stringent. In order to meet these regulations, fuel efficiency must be increased. This can be possible using devices that recover otherwise wasted energy. In this study, an electromagnetic regenerative shock absorber is analyzed. The device is capable of converting the vibrational energy, usually wasted as heat in conventional dampers, into electrical energy. The objective of this work is to develop a MatlabĀ® model of the system in order to evaluate the gain in terms of harvested energy. The dynamic performance of the selected regenerative ...


Numerical Investigation Of Steady-State And Transient Operations Of A Turbocharged Si Engine With Electric Supercharger, Ivan Filidoro Jan 2015

Numerical Investigation Of Steady-State And Transient Operations Of A Turbocharged Si Engine With Electric Supercharger, Ivan Filidoro

Electronic Theses and Dissertations

Gasoline engine downsizing, associated with turbocharging, has proved to be one of the most effective ways to reduce specific fuel consumption of the internal combustion engine. This tendency introduces a number of technical challenges, such as reduced steady-state low speed torque, delay in transient response caused by the turbocharger, combustion limitations due to propensity to knock. Advanced boosting systems can succeed in overcoming these issues; of particular interest is the solution featuring a second, electrically-driven, compressor in series with the turbocharger compressor. The engine considered in this work is a four-cylinder inline, turbocharged and electrically supercharged engine by FCA. In ...


Computational Fluid Dynamics Modeling Of The Effects Of Water Injection In A Diesel Engine, Rabun Z. Wallace Jan 2015

Computational Fluid Dynamics Modeling Of The Effects Of Water Injection In A Diesel Engine, Rabun Z. Wallace

Electronic Theses and Dissertations

Water injection has been used in internal combustion engines for many years. It has been used to cool combustion temperatures, reduce emissions, and in some instances clean carbon buildup from the cylinder. Research has shown that the water to fuel mass ratio is most effective between 20-30%, so the upper and lower limit were used for simulations in Converge CFD. To validate the CFD model, a case without water injection was compared to experimental data from Sandia National Laboratory. The predicted in-cylinder pressure and heat release rate showed good agreement with the experimental data. Cases were run with the injection ...


Objective Predictor Metric Of Annoyance For Hydraulic Engine Mount Cavitation, John Powell Jan 2015

Objective Predictor Metric Of Annoyance For Hydraulic Engine Mount Cavitation, John Powell

Electronic Theses and Dissertations

Vehicle acoustics has been found to have a direct impact on customer experience. Unexpected noises play a role in this experience. Hydraulic engine mount cavitation, the noise heard from the collapse of vapor bubbles in the mount, is considered one of those unexpected noises. During the design phase of a vehicle when an unexpected noise is found there is a need for a method to quantify how much of the noise is too much. Subjective evaluations alone are not enough due to variability from engineer to engineer. An objective way needed to be developed in order to evaluate the cavitation ...


A Lumped Parameter Model For The Filling Of An Automotive Fuel Tank, Shelagh Fackrell Jan 2001

A Lumped Parameter Model For The Filling Of An Automotive Fuel Tank, Shelagh Fackrell

Electronic Theses and Dissertations

One of the problems facing automotive fuel tank designers today is that of premature shut-off during the filling process. Premature shut-off occurs when the fuel dispensing nozzle stops before the automotive fuel tank is completely full. A simplified lumped parameter model has been developed in order to predict the pressures and flow rates associated with fuel tank filling.