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well for me a diesel hybrid makes no sense. u have to buy the hybrid AND the expensive diesel engine. in the near future (if not today) u will have to buy a little chemistry plant eigther, to clean the exausted stuff- and you will never match the gasoliners pollutions. the heavy engine rattles and shakes at every start up and u will need turbos and HP injection to run it. witch of course will fail sometimes.
the up side is not so much. in the sweet spot a diesel gets 180 g/kWh, the atkinson zycle engine of the prius 2003 gets 210 g/kWh, witch is almost the same. at low loads a diesel gets maybe 400 g/kWh, but the gasoliners topping 800! thats the point, where the diesel or the hybrid stuff pays out.
the little gain at the sweet spot isnīt worth the efforts.
every ship, every truck, every bus, many trains, many buildings, all they need diesel. but a barrel oil has a given percentage of diesel and gas. itīs simply wrong to use it in little cars and pollute the air right there, where people live.
dueto the taxes, diesel is in germany somewhat cheaper, than gas. but the diesel runners now have reached the zenit. the political mistake is corrected by the market. the diesel price is raising quicker as gas. but now the german manufactors have no good hybrids annd not a clue, how to make them...
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