Utilisation of Biofuels (especially Biodiesel) on Internal ... Heinrich Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines 12th -13th November 2005 EIMA

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  • Hartmut Heinrich

    Utilisation of Biofuels(especially Biodiesel)

    on Internal Combustion Engines

    12th -13th November 2005EIMA - Bologna

    Group ResearchPowertrain, Fuels and Lubrificants

    VOLKSWAGEN AG

  • Main TopicsMain Topics

    Energy

    1990 1995 2000 2005 2010 2015 2020 2025

    Greenhouse Gases CO2

    Exhaust emissions CO,NOx,HC,PM

    Change in environment related development topics

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • fuelsfuels

    SynFuelsSynFuels alternativealternative

    hydrogenhydrogen

    alcohols(methanol, ethanol)

    alcohols(methanol, ethanol)

    natural gasnatural gas

    biodieselbiodiesel

    conventionalconventional

    dieseldiesel

    gasolinegasoline

    GTL, CTL*GTL, CTL*

    BTL **/ SunFuelBTL **/ SunFuel

    * GTL: Gas to Liquids

    ** BTL: Biomass to Liquids

    * CTL: Coal to Liquids

    FuelsFuels

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Demands on Future Fuels - 1

    No Single Energy Carrier will be Able to Fulfill these Demands

    ! safe supply! easy handling and storage! high energy density! economically competitive! consideration of environment and climate protection

    - low emissions (CO, HC, NOx, PM)- low CO2- emissions

    Demands on Future Fuels - 2not to diversify on the fuels side

    economically unacceptable solutionbut

    !!!! to blend into existing fuels relating to existing fuel specificationsEthanol """"ETBE, biodiesel

    !!!! to diversify on the primary energy side

    from crude oil to natural gas, coal and biomassno hen and egg - problem

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Challenges of the FutureRenewable fuels for the transportation sector

    renewable gaseous fuels" biogas

    biohydrogen

    !

    renewable liquid fuels" biomass " SunFuel (BTL),

    !

    Biodiesel, Bioethanol

    Volkswagen Scenario for the Evolution of Fuels

    Evolution of FuelsGasoline/ Dieselbased on crude oil(with blends of biofuels according to fuel speci-fications)

    SynFuelbased on natural gas, coal (withsequestration)

    SunFuelbased on renewables

    Hydrogenbased on renewables

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • ClassificationClassification of of SyntheticSynthetic FuelsFuelsSynthetic Fuels Conventional Biofuels

    z.B.FAME*, Ethanol

    * FAME: Fatty Acid Methyl Ester

    GTL(Gas to Liquid)

    SynFuel

    BTL(Biomass to Liquid)

    = 2. Generation von fortgeschrittenen

    SunFuel

    Diesel

    Process

    Group

    Product

    CTL*(Coal to Liquid)

    SynFuel

    = 1st generation of biofuels

    = 2nd generation of advanced biofuels

    * with sequestration

    DieselDiesel

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Bioethanol: Position of the Automotive Industry

    Blending of EtOH to gasoline (according to EN 228)1. priority: 15 % ETBE (EtOH content: 47 %) or2. priority: 5 % EtOH (today: approx. 6 Mio t for EU 25)3. priority: automotive industry is open for 10 % blending (E10) if all gasoline in EU is blended to the limit of 5 %. But this case has to be examined in cooperation with all parties:- new specification within CEN for gasoline E10- review of the automotive blending EtOH specification

    higher percentages in combination with flex. fuel vehicles are rejected by themajority of the car companies due to the relatively small amount of EtOH in Europe which doesnot justify the development of those cars as well as the introduction of a new distributionsystem for E85

    blendung of EtOH to diesel fuel is strongly rejected on account of both safety and mechanical incompatibility

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

    Year Biofuels Natural Hydrogen Totalgas

    % % % %

    2005 2 2

    2010 5,75 2 7,75

    2015 (7) 5 2 (14)

    2020 (8) 10 5 (23)

    Year Biofuels Natural Hydrogen Totalgas

    % % % %

    2005 2 2

    2010 5,75 2 7,75

    2015 (7) 5 2 (14)

    2020 (8) 10 5 (23)

    EU-Scenario for Alternative Fuels(BioFuels-Directive)

  • Neat Vegetable Oil It has been proved that Diesel engines can beworked on earth-nut oil without any difficulty

    Rudolph Diesel: The Diesel Oil-Engine.Engineering Vol. 93, pp.395-406, 1912.

    ten times higher viscosity leads to poorer fuelspray quality, subsequently leading to depositsin the combustion chamber, coking of the pistonrings and thus to unsufficient engine lifetime penetration of vegetable oil into the engine oilleads to polymerisation of the engine oil and thusto blockage the lubrication with engine failurenoncompliance with emissions standards as EU 2,3,4 and US-FTPfilter plugging by fungus and bacteriumcontamination of the fuel system no flowability at low temperaturesinsufficient cold start performance

    Properties of Neat Vegetable Oil

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Pure Vegetable Oil: Position of the Automotive Industry

    Pure vegetable oils as well as their blending to diesel fuel is strongly rejected by theautomotive industry due to the partly negative properties of pure vegetable oils which preventtheir usage in small passenger car engines in consideration of the quality criteria of theautomotive industry.

    But pure vegetable oils can be added to crudeoil in the refinery generating a diesel fuel whichis partly based on pure vegetable oil as it has already been shown by Volkswagen and VEBA oil at the beginning of the 90ies.

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Refinery Based NExBTL Unit (Neste Oil and Total)

    AcidCausticWater

    Hydrogen

    Bio Oil

    NExBTL-ProcessConversion

    of Fatty Acidsto

    Parafins and Isoparafins

    Stabilation

    PretreatmentImpuritiesremoval

    Fuel gas

    Sour water

    Sludge

    Componenttank

    Dieseltank

    Diesel +biodiesel

    blends

    NExBTL component sales

    Mineral oil diesel

    Feed tank

    Source:

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Biodiesel: VolkswagensInvestigations in the 80s

    Historic Position of Biodiesel (RME)In the 80ies: investigation of Biodiesel (100 % biodiesel, due to the German mineraloiltax law) in VW-research department 1992: aftermarket kit for Biodiesel for Golf-classMY 1996: Volkswagen as the only car manufacturer gave release for all Diesel cars for Biodiesel (RME) according to the German Standard E DIN 516062003: Volkswagen had to communicate a revocation of the RME-Biodiesel release for the new models, as a reaction on changed basic conditions:

    # nonfulfilment of EU 4 emission standards# no compatibility with diesel particulate filters# no compatibility with preheaters# customers complaints about engine and injection pump failures due to

    insufficient fuel quality

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • B5 according to EN 590:all Diesel vehicles> B5:no release and no warranty for blends higher than 5 vol % Biodiesel (non-compliance

    with EN 590)B100 (RME-Biodiesel according to EN 14214):MYs 1996 2002 with RME-Biodiesel releasefrom MY 2003: no general release

    Biodiesel: Which VW Models can Use which Fuels/Blends?

    Biodiesel: Why some Models cannot Use Certain Fuels?material incompatibilities (metals, elastomers, plastics)# softening, swelling or hardening and cracking of some elastomers

    including nitrile rubbers# corrosion of aluminium & zinc

    nonfulfilment of stringent exhaust gas legislation e.g. EU 4 using biodiesel in the diesel applicationno compatibility with Diesel particulate filtersno compatibility with preheaters

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Biodiesel: Position of the Fuel Injection Equipment (FIE) Manufacturers

    Common Position Statement on FAME (June 2004):

    The currently agreed position of all FIE manufacturers is to limit release of injection equipment for admixt-ures

    - up to a maximum of 5 % FAME(meeting the EN14214 standard)

    - with unadulterated diesel fuel (meeting the EN590 standard).

    The final product B5 must also comply with EN 590.

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines12

    th -13th November 2005Hartmut HeinrichEIMA - Bologna

  • Ceramic Particulate Trap

    engineexhaust filteredexhaust gas

    filteredexhaust gas

    engineexhaust

    Utilisation of Biofuels (especially Biodiesel) on Internal Combustion Engines1