In a modern passenger vehicle, more than 70% of the fuel energy is lost to the environment as waste heat. In contrast, a lack of heat during the cold start results in an increase of fuel consumption of e.g. up to 15% in a NEDC started at 20 °C. This apparent conflict can be solved by storing the otherwise lost waste heat and return and use it during the next cold start for a more rapid engine and cabin warm up. An exhaust heat exchanger transfers part for the exhaust waste heat into a heat storage device which uses a phase change material on salt basis. A high-vacuum isolation provides low-loss storing overnight. During the cold start, e.g. at the next morning, the stored heat is used for heating the engine coolant, engine oil, gear oil and the passenger cabin. The fuel reduction benefit of a different heat split-up into these competing heat sinks was analysed and evaluated by a large scale of test series. An experimental research car including a 1,4 liter 90 kW TSI gasoline engine was equipped and tested on roller test bench and on the road. A significant fuel/CO2 reduction could be verified for the NEDC and for typical customer cycles. Additionally, the comfort level was improved considerably by supplying increased cabin heating power during the cold start.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Exhaust energy recovery by PCM heat storage


    Beteiligte:


    Erscheinungsdatum :

    2012


    Format / Umfang :

    13 Seiten, 15 Bilder, 3 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Exhaust energy recovery by PCM heat storage

    Kaeppner,C. / Henn,M. / Loeschter,T. et al. | Kraftfahrwesen | 2012


    Exhaust gas heat recovery energy extraction strategy

    SHEPARD DANIEL J / GONZE EUGENE V / DICKSON DOUGLAS | Europäisches Patentamt | 2019

    Freier Zugriff


    EXHAUST HEAT RECOVERY SYSTEM

    MATSUMOTO TAKAHIRO / INOHARA YOSHIYUKI / FUJIKI NOBUHIKO et al. | Europäisches Patentamt | 2017

    Freier Zugriff

    Exhaust heat recovery device

    KOBAYASHI ARATA / OKAMI HIROHISA | Europäisches Patentamt | 2017

    Freier Zugriff