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If you hear word “emission-free” in connection with electric cars, n 15 traffic professors in retirement age are going through back. “According to laws of physics, a emissionsfreiesBewegen of great masses is not possible,” y write in a joint statement. Due to ongoing negotiations on government education in Germany and Austria, seven-page paper was published this week in Berlin UndWien. It is supposed to clean up with illusion that we could make our gegenwärtigesVerkehrssystem with simple change from incineration to Elektromotorenzukunftsfähig. “In many cases impression is gained that this discussion ignores laws of physics”, writes scientists
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(You can download opinion here as a PDF file).
Your critique connects you with clear demands on DiePolitik. This includes introduction of efficiency standards for electric cars. ” To pretend that consumption value is ultimately irrelevant – as Ausdrückewie ‘ zero-emission ‘ or ‘ zero-energy ‘ suggests, serious Folgen.Ess have failed any incentive for manufacturers to market thrifty electric cars to Konstruierenund. Because your CO ₂ output is officially counted with zero grams – no matter how much energy you actually consume. Dabeimüssen vehicles, ir batteries and charging current are also generated and later disposed of again – with EntsprechendenEmissionen in mining, industry and power plants.
Where does electricity for cars actually come from?
In order to verglichenwerden consumption of all cars – wher y are fueled by gasoline, diesel, natural gas or electricity – it is necessary to introduce a standardized calculation for CO2 Gesamtemissioneneines vehicle. The basis for this must be aktuelleEnergiemix in power grid, “so as to create an impetus for expansion of ecological energy production.” Helmut Apple, main author opinion and former head of department integrated traffic Planning UndMobilitätsentwicklung to DerUni Kassel, can sogarvorstellen to base mix at respective time of day. Dennnachts, when electric cars are mainly charged, re is no solar power. For this, proportion of coal and nuclear is often significantly higher than during day.
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The realistic value for CO ₂ output VonElektroautos must n also be used for calculation of fleet consumption, according to opinion of professors. Because with derzeitigenBewertung of all electric cars as emission-free “it is naturally worthwhile for DieHersteller to replace just large and heavy burners with appropriately large undschwere (or even heavier) electric vehicles”. This is not a bad suspicion, says Helmut wooden Apple, “I have heard it several times VonIngenieuren from automotive industry”.
Please control size and weight of e-cars!
In fact, proportion of particularly SchwererStadtgeländewagen, SUVs, on all readmissions in Vergangenen20 years was shot from two to more than 20 percent. A similar trend is now threatening electric cars. The higher your power and range, destogrößer and heavier are batteries you need to have on board. “Esbesteht is an urgent occasion to limit or at least tax size and weight of passenger vehicles”, transport professors write. Because not only energy consumption increases with size and weight einesFahrzeugs disproportionately, even Fine dust emissions from abrasion VonBremsen and tires as well as wear of roads increases, latter even Indians fourth power of axle load. A single over two-ton Tesla damages pavement as much as 16 semi-heavy VW Polo engines.
Even enormous acceleration, to which electric cars fähigsind, traffic professors see skeptical. The fact that a small e-up at lights can depend on a Porsche with turbochargers is almost without exception cheered in public (“Great driving Fun”), but actually cost high acceleration but a lot of energy and is especially in city also Sehrgefährlich – especially for Pedestrians and cyclists when y hear lightning-fast but quiet electric cars too late. In addition, higher Beschleunigungauch lead to a higher wear of roadway and tires with entsprechendhöheren fine dust emissions. “A – Technically problem-free – limitation of desBeschleunigungsvermögens of electric vehicles is refore Dringenderforderlich”, it is stated in opinion.
