what makes diesel fuel different than other fuel?

Discussion in 'After Hours Lounge (Off Topic)' started by LDfan, Jul 30, 2003.

  1. LDfan

    LDfan Supporting Actor

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    I've always wondered about this but never knew the answer. Is there something special about diesel fuel and why do big trucks and other vehicles have to use it?

    Thanks
    Jeff
     
  2. Dennis Nicholls

    Dennis Nicholls Lead Actor

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    Well it has very LOW octane because you want the engine to ping - that's how diesels work. I'm not exactly sure what you are looking for in an answer.
     
  3. Lew Crippen

    Lew Crippen Executive Producer

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  4. DustinLC

    DustinLC Supporting Actor

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    Well, it just happened that we in the US decided to use regular gasoline instead of diesel in regular cars and it just pick up that way.

    There's no reason why all cars can't be made to run on diesel. That's probably the way it should have started.

    It's kind of like why we have VHS and not beta.
     
  5. Brandon_T

    Brandon_T Screenwriter

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    I saw that Chrysler is coming out with a whole Jeep line, including the Liberty, that will be diesel in the next year or two.

    Brandon
     
  6. ken thompson

    ken thompson Second Unit

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    Diesel is actually an oil very similar to kerosene. Gas stations actually take the kerosene they have remaining after the cold season and dump it into the diesel tanks. I believe the low octane is needed because the combustion that occurs in a diesel engine is derived purely from compressions as there is no ignitions system or spark of any kind.
     
  7. Mark Sherman

    Mark Sherman Supporting Actor

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    I tell you the best for a car is having the word diesel on the back, no one will steal it, Even better then LO-JACK
     
  8. Seth--L

    Seth--L Screenwriter

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  9. Dennis Nicholls

    Dennis Nicholls Lead Actor

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  10. Philip_G

    Philip_G Producer

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    Ken pretty well nailed it. there is no ignition really, the glow plugs warm up and get the engine going, after that it ignites from the compression. As I understand it diesel is less refined and should be cheaper to refine, but around here costs a bit more [​IMG]

    they do kind of suck in the extreme cold. VW sells a pretty cool turbo diesel in their line of cars (beetle, golf, jetta) that gets nearly 50mpg.
     
  11. Michael Varacin

    Michael Varacin Stunt Coordinator

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    Diesels are also way more efficient then gasoline engines. A lot less energy is wasted in heat from a diesel.

    However, alcohol is where it's at. But the petroleum companies have too much pull in congress to push alternative fuels along. We will be dependant upon gasoline until the oil wells run dry for no reason.
     
  12. Keith Mickunas

    Keith Mickunas Cinematographer

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  13. Rob Gillespie

    Rob Gillespie Producer

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    Diesel engine cars are very common over here. Every black taxi cab you see is a diesel and virtually all common cars come in a diesel varient.

    Gas mileage is much better with diesel because the engines don't require as many revs. The fuel is a few pennies more expensive, but the cars are cheaper to run. They do tend to be a little more expensive to buy though and the engine blocks are heavier. 50-60mpg are not uncommon.

    I've test driven the same model car with a 2.0litre petrol engine and 2.0litre turbo diesel. The petrol is more responsive and quicker away from the lights. The diesel, is slower away from the lights but once it gets going it'll keep up with the petrol quite easily. The 40-70mph acceleration of diesels is often superior to the equivalent petrol and you barely have to apply any extra revs going uphill.
     
  14. LDfan

    LDfan Supporting Actor

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    Wow, this has pretty much answered my question about diesel fuel and the engines that use it.


    Jeff
     
  15. Philip_G

    Philip_G Producer

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    Actually keith, you can tell a TDi by the black streak on the bumper above the exhaust [​IMG] (seriously, I've noticed it on the TDi beetles if they haven't been washed)
     
  16. Christ Reynolds

    Christ Reynolds Producer

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  17. Joe D

    Joe D Supporting Actor

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    Diesel engines cost more money to produce than gasoline engines because they need to be able to withstand the pressure that is needed to activate the fuel.

    By 2007 in the United States the particles will be significantly reduced for diesel fuel. In Europe they have already cut the amount of particles that are in the fuel, so it's a matter of what the standard is for the fuel.

    Diesel has 1.3 times as much energy per unit than gasoline, which is one reason why the engines get better gas mileage.
     
  18. Eric Kahn

    Eric Kahn Guest

    Alcohol is not a viable alternative to gas, it cost to much to produce, you will only get half the milage of gas (half as many BTU's per gallon as gas) You have to distill it which takes a huge amount of energy
    biodiesel is a much better alternative due to skipping the distilling and fermenting steps

    I run plain old petro diesel in my TDI, Biodiesel cost twice what the petro stuff runs
     
  19. MarkHastings

    MarkHastings Executive Producer

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  20. Rob Gillespie

    Rob Gillespie Producer

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    I think some of their info is a little out of date.

     

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