Dual fuel (CI) engines provide an excellent means of maintaining high thermal efficiency and power while reducing emissions, particularly in situations where the primary fuel does not exhibit good auto-ignition characteristics. This is especially true of diesel engines operating on natural gas; usually in stationary applications such as distributed power generation. However, because two fuels are needed, the reliability of the engine is compromised. Therefore, this paper describes the first phase of a project that is to eventually manufacture dimethyl ether (DME) from natural gas and supply it to the pilot injector of a dual fuel engine.A chemical pilot plant has been built and operated, demonstrating an intermediate step in the production of DME from natural gas. DME is manufactured from methanol for pilot injection into a dual fuel engine operating with natural gas as the main fuel. Presently, 0.38 kilogram of DME fuel is produced per kilogram of methanol feed into the process via a catalytic reaction. Future improvements in separation efficiency should improve this to ∼0.53 kg DME / kg methanol feed. The plant is capable of supplying DME of sufficient fuel quality (i.e., DME containing < 10 wt% H2O and < 10 wt% methanol) to the fuel injection system at a pressure of 15 bara and a flow-rate of 1.5-2.0 kgDME/hr. This would be enough to provide a ½ LHV% pilot of DME to a 1000 bkW dual fuel engine with 42% thermal efficiency. Byproducts of the process situate into two liquid phases, each containing amounts of DME, methanol, and water.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    On-Site DME Generation from Methanol for Pilot Injection in CI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE Powertrain & Fluid Systems Conference & Exhibition ; 2003



    Erscheinungsdatum :

    27.10.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    On-Site DME Generation from Methanol for Pilot Injection in CI Engines

    Horstman, D. L. / Abata, D. L. / Keith, J. M. et al. | British Library Conference Proceedings | 2003


    On-site DME generation from methanol for pilot injection in CI engine

    Horstman,D.L. / Abata,D.L. / Keith,J.M. et al. | Kraftfahrwesen | 2003


    Flash boiling Injection Improves Performance of Methanol Engines

    Suto,H. / Iwai,N. / Tsuruga,T. et al. | Kraftfahrwesen | 1977


    Methanol injection systems for large 4-stroke engines

    Berger, Ingmar / Bärow, Enrico / Koch, Hans-Joachim et al. | TIBKAT | 2022


    Pilot Injection and Flame Characteristics in Scramjet Engines

    Taha, Ahmed / Tiwari, Surendra / Nohieldin, Taj | AIAA | 2002