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Earth Science Technology

Researchers Improve Efficiency of Plug-in Hybrid Electric Vehicles By Almost 12% (dispatchtribunal.com) 63

hypnosec writes: A new study has put forward claims that by working on and improving the energy management system (EMS) that decides when the switch from 'all-electric' mode to 'hybrid' mode in plug-in hybrid electric vehicles, efficiency of these vehicles can be improved by as much as 12 per cent. Researchers have shown in their lab tests that blended discharge strategies wherein power from the battery is used throughout the trip, have proven to be more efficient at minimizing fuel consumption and emissions.
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Researchers Improve Efficiency of Plug-in Hybrid Electric Vehicles By Almost 12%

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  • by slinches ( 1540051 ) on Friday February 12, 2016 @07:06PM (#51497833)

    Basically what they're doing is optimizing the electric/gas switching for specific routes to make best use of the battery (e.g. plan so that it doesn't run out of juice halfway up a hill). In order to make that generally applicable, each car would have to constantly track location and other telemetry and send it back to a central database to build a map of all common routes. Alternatively, it could also be used as a self contained system that would learn the best strategy for your normal commute, but then it would have no benefit on roads you haven't driven before.

    • Sounds like from the description it learns from previous trips. But they are looking to do the "cloud based" approach.
    • Alternatively, it could also be used as a self contained system that would learn the best strategy for your normal commute, but then it would have no benefit on roads you haven't driven before.

      I think you could cover 99% of my driving with less than 100 routes. Especially if I get into the habit of telling the car where I'm planning on going.

    • The title is just wrong. They did not improve the efficiency by almost 12%. They said the THINK THEY CAN do it, and the have demonstrated some improvement. Why are we afraid of accurate headlines?
      • by Anonymous Coward

        The title is correct. They did improve the efficiency by almost 12% in tests, and then another 8% on top of that in simulations. I'm providing exactly as much proof as you did.

      • by hawk ( 1151 )

        You must be new around here . . :)

        hawk

  • I was wondering where all the Diesel engine software engineers from Volkswagen went after their 'improvements' to the emissions system in diesel VWs was 'discovered'... Now I know - they went to work on hybrid cars apparently.
  • by Anonymous Coward

    By manually controlling the switchover between electric mode and hybrid mode in my Prius Plug-in I can get over 20 miles per charge (100Wh/mile), which is double what the car gets if you just let it manage things. Once you figure out that electric mode is more efficient for maintaining speed on flat or downhill ground (low engine load), and gas is more efficient for acceleration and climbing uphill (high engine load), you can push a plug-in far more than the factory programming would achieve.

  • Get one charge to go 350+ miles, same as a tank of gas, and they may have something actually useful. Still can't drive from SF to LA without an overnight to recharge. Too much hassle.

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