The Experts below are selected from a list of 1629 Experts worldwide ranked by ideXlab platform

Bedri Yuksel - One of the best experts on this subject based on the ideXlab platform.

  • the use of ethanol gasoline blend as a fuel in an si engine
    Renewable Energy, 2004
    Co-Authors: Fikret Yuksel, Bedri Yuksel
    Abstract:

    Abstract One of the major problems for the successful application of gasoline–alcohol mixtures as a motor fuel is the realization of a stable homogeneous liquid phase. To overcome this problem, a new carburetor was designed. With the use of this new carburetor, not only the phase problem was solved but also the alcohol ratio in the total fuel was increased. By using ethanol–gasoline blend, the availability analysis of a spark-ignition engine was experimentally investigated. Sixty percent ethanol and 40% gasoline blend was exploited to test the performance, the fuel consumption, and the exhaust emissions. As a result of this study, it is seen that a new dual fuel system could be serviceable by making simple modifications on the carburetor and these modifications would not cause complications in the carburetor system.

  • the use of ethanol gasoline blend as a fuel in an si engine
    Renewable Energy, 2004
    Co-Authors: Fikret Yuksel, Bedri Yuksel
    Abstract:

    One of the major problems for the successful application of gasoline–alcohol mixtures as a motor fuel is the realization of a stable homogeneous liquid phase. To overcome this problem, a new carburetor was designed. With the use of this new carburetor, not only the phase problem was solved but also the alcohol ratio in the total fuel was increased.

Fikret Yuksel - One of the best experts on this subject based on the ideXlab platform.

  • the use of ethanol gasoline blend as a fuel in an si engine
    Renewable Energy, 2004
    Co-Authors: Fikret Yuksel, Bedri Yuksel
    Abstract:

    Abstract One of the major problems for the successful application of gasoline–alcohol mixtures as a motor fuel is the realization of a stable homogeneous liquid phase. To overcome this problem, a new carburetor was designed. With the use of this new carburetor, not only the phase problem was solved but also the alcohol ratio in the total fuel was increased. By using ethanol–gasoline blend, the availability analysis of a spark-ignition engine was experimentally investigated. Sixty percent ethanol and 40% gasoline blend was exploited to test the performance, the fuel consumption, and the exhaust emissions. As a result of this study, it is seen that a new dual fuel system could be serviceable by making simple modifications on the carburetor and these modifications would not cause complications in the carburetor system.

  • the use of ethanol gasoline blend as a fuel in an si engine
    Renewable Energy, 2004
    Co-Authors: Fikret Yuksel, Bedri Yuksel
    Abstract:

    One of the major problems for the successful application of gasoline–alcohol mixtures as a motor fuel is the realization of a stable homogeneous liquid phase. To overcome this problem, a new carburetor was designed. With the use of this new carburetor, not only the phase problem was solved but also the alcohol ratio in the total fuel was increased.

Diego A. Arias - One of the best experts on this subject based on the ideXlab platform.

  • iNUMERICAL AND EXPERIMENTAL STUDY OF AIR AND FUEL FLOW IN SMALL ENGINE Carburetors
    2005
    Co-Authors: Timothy A. Shedd, Diego A. Arias, Assistant Professor
    Abstract:

    Due to price constraints, small engines rely on inexpensive and mechanically-simple de-vices for air-fuel mixture formation: Carburetors. A typical carburetor consists of a complex set of internal passages designed to deliver to the engine the correct air-fuel mixture ac-cording to speed and load. This goal is achieved through several physical processes: flows through passages of short length and complex geometry; flows that transition from laminar to turbulent; high-frequency pulsating flow; two-phase flow of various forms, i.e., bubbles, sprays and thin liquid films; and flows with changing fuel and air properties due to rapid changes in temperature and pressure. This study addressed the theoretical modeling of the phenomena inside the main circuit typically found in small engine Carburetors. This theo-retical study was done in two steps: first, a general one-dimensional model of the fuel flow as a flow network was derived. This model contains the characterization of the dynamic flow in single-phase elements and the appropriate two-phase flow model for the small diameter pipes. The model was implemented into a one-dimensional engine simulation software, and used to perform sensitivity analyses of carburetor performance as function of carburetor parts

  • Numerical and Experimental Study of Fuel and Air Flow in Carburetors for Small Engines
    SAE Technical Paper Series, 2004
    Co-Authors: Diego A. Arias, Timothy A. Shedd
    Abstract:

    This work presents a complete model of the carburetor for small engines. It extends the previously published models by incorporating a detailed review of two-phase flow pressure drop, the effect of the fuel well on the control of airbleed flow, and unsteady flow. The homogenous two-phase flow model, which is commonly used in carburetor modeling, was compared with an empirical correlation derived from experiments in small pipes and found to be in poor agreement. In order to assess unsteady flow conditions, the model was extended by solving instantaneous one-dimensional Navier-Stokes equations in single-phase pipes. This strategy proved successful in explaining the mixture enrichment seen under pulsating flow conditions. The model was also used to derive a sensitivity analysis of geometries and physical properties of air and fuel.

Iting Wang - One of the best experts on this subject based on the ideXlab platform.

  • emissions of gaseous pollutant from motorcycle powered by ethanol gasoline blend
    Applied Energy, 2013
    Co-Authors: Yungchen Yao, Jiun Horng Tsai, Iting Wang
    Abstract:

    Abstract Two four-stroke motorcycles equipped with carburetor and fuel-injected engine, respectively, had been tested to evaluate the effect of ethanol–gasoline blend on gaseous pollutant emissions. Blend gasoline contains 15% (vol) ethanol (E15) and commercial unleaded gasoline (G95) was used as test fuels. Emission test had been conducted on a chassis dynamometer with the Economic Commission for Europe (ECE) cycle. Criteria air pollutants (CO, THC, and NOx) and organic air pollutants were analyzed. The results showed that emission of CO from E15 decreased by 32% (carburetor) and 10% (fuel-injection), respectively, compared with those of G95. THC emissions also showed a reduction by 10% for fuel-injected engine, but did not reduce emissions from carburetor engine. No significant decrement of NOx emission was observed as using E15. Organic air pollutant emission factors of E15, except carbonyl, were lower than those of G95 for both test motorcycles. High emission of acetaldehyde was observed while using ethanol blend. The ozone-forming potential of motorcycle engine exhaust also reduced as using E15 blend instead of commercial gasoline.

Timothy A. Shedd - One of the best experts on this subject based on the ideXlab platform.

  • iNUMERICAL AND EXPERIMENTAL STUDY OF AIR AND FUEL FLOW IN SMALL ENGINE Carburetors
    2005
    Co-Authors: Timothy A. Shedd, Diego A. Arias, Assistant Professor
    Abstract:

    Due to price constraints, small engines rely on inexpensive and mechanically-simple de-vices for air-fuel mixture formation: Carburetors. A typical carburetor consists of a complex set of internal passages designed to deliver to the engine the correct air-fuel mixture ac-cording to speed and load. This goal is achieved through several physical processes: flows through passages of short length and complex geometry; flows that transition from laminar to turbulent; high-frequency pulsating flow; two-phase flow of various forms, i.e., bubbles, sprays and thin liquid films; and flows with changing fuel and air properties due to rapid changes in temperature and pressure. This study addressed the theoretical modeling of the phenomena inside the main circuit typically found in small engine Carburetors. This theo-retical study was done in two steps: first, a general one-dimensional model of the fuel flow as a flow network was derived. This model contains the characterization of the dynamic flow in single-phase elements and the appropriate two-phase flow model for the small diameter pipes. The model was implemented into a one-dimensional engine simulation software, and used to perform sensitivity analyses of carburetor performance as function of carburetor parts

  • Numerical and Experimental Study of Fuel and Air Flow in Carburetors for Small Engines
    SAE Technical Paper Series, 2004
    Co-Authors: Diego A. Arias, Timothy A. Shedd
    Abstract:

    This work presents a complete model of the carburetor for small engines. It extends the previously published models by incorporating a detailed review of two-phase flow pressure drop, the effect of the fuel well on the control of airbleed flow, and unsteady flow. The homogenous two-phase flow model, which is commonly used in carburetor modeling, was compared with an empirical correlation derived from experiments in small pipes and found to be in poor agreement. In order to assess unsteady flow conditions, the model was extended by solving instantaneous one-dimensional Navier-Stokes equations in single-phase pipes. This strategy proved successful in explaining the mixture enrichment seen under pulsating flow conditions. The model was also used to derive a sensitivity analysis of geometries and physical properties of air and fuel.