Engines start-stop

Published on November 25th, 2013 | by Christopher DeMorro

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Stop-Start Coming To Most Ford Models

start-stopFord is committed to efficient gas engines with its EcoBoost line of motors, but the motors are going to need some help to meet fuel economy mandates. Ford is preparing to roll out stop-start engine shutoff systems on most of its newer models, saying the technology can save drivers as much as $1,000 over five years.

The first American model to offer stop-start was the 2013 Ford Fusion with the 1.6 liter EcoBoost engine, as a $295 option that hasn’t proven particularly popular with buyers thus far. That’s because stop-start doesn’t really boost fuel economy ratings per se, as current testing standards don’t reflect the fuel savings of shutting off the motor at idle.

The system works by cutting off fuel when the car comes to a stop, but keeps the engine spinning at normal idle speed via an electric motor. When the driver lifts their foot off the brake pedal, fuel is introduced to the already-spinning motor, so the driver can accelerate normally without having to totally restart the car. By not wasting fuel when the car isn’t moving, you can save a lot of fuel, especially on bigger engines.

For Ford, the most likely next candidate is the F-150 pickup, which has competitors like the Ram 1500 beating it to the punch with start-stop tech. Adding stop-start is relatively easy and cheap, but Ford has not been big in pushing or marketing the feature. With an aggressive roll-out though, expect to hear a whole lot more about stop-start from Ford in the next year.

 Source: Automotive News




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About the Author

A writer and gearhead who loves all things automotive, from hybrids to HEMIs, can be found wrenching or writing- or esle, he's running, because he's one of those crazy people who gets enjoyment from running insane distances.



  • Jason Carpp

    How is this “start/stop” button supposed to help reduce emissions? And what’s wrong with offering a diesel engine? I’d buy one in a heartbeat if it were available with a small diesel engine.

    • danwat1234

      If the engine isn’t turning when propulsion isn’t needed, gas is saved.
      Diesel does offer MPG benefits, but might as well have auto start/stop on it as well.

      • Jason Carpp

        I’d say how about offering both?

  • Tim Cleland

    This is good news. I’m glad to see start/stop technology is becoming mainstream. I’ve always thought that is the next logical step. Imagine the gasoline saved during one big traffic jam in one city if all the cars had start/stop.

  • danwat1234

    “The system works by cutting off fuel when the car comes to a stop, but keeps the engine spinning at normal idle speed via an electric motor. When the driver lifts their foot off the brake pedal, fuel is introduced to the already-spinning motor, so the driver can accelerate normally without having to totally restart the car. By not wasting fuel when the car isn’t moving, you can save a lot of fuel, especially on bigger engines.”
    What?? The engine isn’t turning with electric power as far as I know. The larger starter motor in the case of a non-hybrid Focus kicks over the engine quietly when the engine is needed (clutch pedal not pressed). In the case of hybrids, the Motor/generator next to the engine flicks on the engine.
    Example of 2012 Ford Focus 3 cylinder (Europe) with auto start/stop. Notice tach gauge.

  • Pingback: Auto Start-Stop Coming to 70% of Ford's Product Line | Sustainablog

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