Regulations on emissions from diesel engines are becoming more stringent worldwide. Hence there is a great deal of interest in developing engine combustion systems that offer the fuel efficiency of a diesel engine, but with low smoke and NOx emissions. Thus, premixed compression ignition combustion is an interesting way to achieve a clean and efficient engine. However, using a high reactivity fuel such as diesel fuel leads to a complex and expensive engine design. A proven way to overcome this drawback is to actively control the reactivity of the fuel using low cetane fuels such as gasoline. This strategy has been explored with single and multiple cylinder engines. However no detailed and well conducted studies of the injection process were found related to the effects of gasoline use in a standard commercial compression ignition diesel engine injection system.This paper focuses on an experimental study which compared the effects of diesel fuel and gasoline on injection rate, spray momentum, and mixing behavior under non-evaporative conditions. A parametric study has been performed varying injection pressure, injector energizing time, and chamber back pressure for diesel fuel and gasoline in specific test rigs developed for this purpose.Compared to diesel fuel, the gasoline fuel results showed lower mass flow and no significant differences in spray momentum when the injector was fully open. Moreover, no relevant changes between the two fuels were found in the macroscopic spray characteristics for non-evaporative conditions. Most of the observed differences are explained by the different fuel properties of the diesel fuel and gasoline. Furthermore, a correlation has been developed for spray tip penetration at different distances from the nozzle exit for both gasoline and diesel fuel.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Hydraulic Behavior and Spray Characteristics of a Common Rail Diesel Injection System Using Gasoline Fuel


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2012 World Congress & Exhibition ; 2012



    Publication date :

    2012-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Hydraulic Behavior and Spray Characteristics of a Common Rail Diesel Injection System Using Gasoline Fuel

    Payri, R. / Garcia, A. / Domenech, V. et al. | British Library Conference Proceedings | 2012



    Dimethyl Ether (DME) Spray Characteristics Compared to Diesel in a Common-Rail Fuel Injection System

    Bae, Choongsik / Lee, Jookwang / Yu, Jun | SAE Technical Papers | 2002



    Spray development and combustion characteristics for common rail diesel injection systems

    Laguitton,D. / Gold,M. / Kennaird,D. et al. | Automotive engineering | 2003