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  • Rustybolt
    replied
    I gotta go with AK on this.
    A nifty idea but how are you going to machine, say, just the cylinder, let alone finish it? I can see a lot more manufacturing pitfalls.

    Leave a comment:


  • Black Forest
    replied
    Originally posted by A.K. Boomer View Post
    I cannot believe the lengths that some people will go through to design an engine with no real added benefits yet with a ton of pitfalls...

    the machining complexity is just a nightmare, the rebuild technology is non-existent as are any real bennies,,,

    This guy deserves and A+++ for effort, unfortunately someone should have slapped him directly in the face and shouted "pull your head out of your arss man" before the project even got started...
    there are some very very intelligent people in this world - who are also really really stupid...

    You will never ever see an abortion like this make it to major production and actually be successful.
    There are a lot of benefits this motor for an electric car. The motor is actually a generator. In the application of an electric vehicle it would really shine as it has no mechanical connection to the drivetrain. A car could actually run directly from the motor via electricity. Not charging the batteries but supplying the electricity to the electric motor(s) that drive the wheels. Of course through the proper circuitry and such. This is different from the now available hybrids that use a mechanical connection from the IC engine to the drivetrain. This would reduce the number of overall parts in the auto. The stator on the kugel engine generates electricity and is used as the starter on the motor. If you supply electricity to the motor with some simplifying modifications it becomes a compressor. And a very quiet compressor.

    The fewer moving parts becomes a big plus I would think. I for one do not think it is a lame brained idea at all. Maybe not the end all be all but definitely worth pursuing.

    I have seen the engine and met the inventor and had a complete tour of the facility. There are over two million euros cost of patents applying only to this motor.

    The whole motor only weighs 74kilograms to output 104hp. The weight savings in an automobile alone make it a big plus.

    Leave a comment:


  • Rustybolt
    replied
    Wankel engines were lauded as paragons of power/ volume, but practical experience showed that they were thirsty, torque-less oil sumps (however cool). Given the decades of intensive research into conventional IC engines, I'd still put my money on them being around for a while yet.

    Iread a book on the Wankle many years ago. If I recall correctly the design was never intended to be an ICE. It's original concept was for it to be used as an air compressor for piston driven aircraft.

    Leave a comment:


  • Lew Hartswick
    replied
    Originally posted by CarlByrns View Post
    Hell, the Mazda rotary engine was almost sunk because it injected a metered amount of motor oil into the intake to lube the rotor seals. A built-in oil leak. Everyone says they check their engine oil, but in reality very few actually do. Which was fatal for an early Mazda.
    My SAAB 850 GT used that same "oiling" technique and it worked fine. People that don't fill the oil tank
    when the fill the gas tank shouldn't be driving any such machine. :-)
    ...lew...

    Leave a comment:


  • CarlByrns
    replied
    Originally posted by A.K. Boomer View Post
    I cannot believe the lengths that some people will go through to design an engine with no real added benefits yet with a ton of pitfalls...

    the machining complexity is just a nightmare, the rebuild technology is non-existent as are any real bennies,,,

    This guy deserves and A+++ for effort, unfortunately someone should have slapped him directly in the face and shouted "pull your head out of your arss man" before the project even got started...
    there are some very very intelligent people in this world - who are also really really stupid...

    You will never ever see an abortion like this make it to major production and actually be successful.
    Amen to that. I used to collect Popular Science and Popular Mechanics magazines and in the 1950's to 1960's every other issue featured some Larry Lightbulb engine that ignored the realities of mass production, cost per unit, or had odd maintenance requirements.

    Hell, the Mazda rotary engine was almost sunk because it injected a metered amount of motor oil into the intake to lube the rotor seals. A built-in oil leak. Everyone says they check their engine oil, but in reality very few actually do. Which was fatal for an early Mazda.

    Leave a comment:


  • Doozer
    replied
    Originally posted by Willy View Post
    Andy, albeit with a few changes, it sounds like you have reinvented the 2 stroke Detroit Diesel 53-71-92-149 series of engines, the number signifies the cubic in displacement per cylinder. Very reliable engines that were in service for a loong time.
    Having put at least a million miles on the 8v71 and 8v92 series engines I have a lot of respect for them.
    But their time has come and gone as they simply could not be competitive against the 4 strokes in terms of fuel efficiency and emissions requirements.

    Amen to all of that.
    I have a 3-53 Detroit, gunna buy a 4-53 also.
    Plan on putting it in my '53 IHC truck with a 6 speed ZF.
    Thoose are screaming little motors!

    --Doozer

    Leave a comment:


  • A.K. Boomer
    replied
    Stay away from that Wheel Barrow Zirus - "Cuz you ain't mechanical"

    Leave a comment:


  • Black Forest
    replied
    Originally posted by A.K. Boomer View Post
    I cannot believe the lengths that some people will go through to design an engine with no real added benefits yet with a ton of pitfalls...

    the machining complexity is just a nightmare, the rebuild technology is non-existent as are any real bennies,,,

    This guy deserves and A+++ for effort, unfortunately someone should have slapped him directly in the face and shouted "pull your head out of your arss man" before the project even got started...
    there are some very very intelligent people in this world - who are also really really stupid...

    You will never ever see an abortion like this make it to major production and actually be successful.
    I think that is nearly word for word what someone must have said to the Wright Brothers! Flying, get a life. Birds fly men walk.

    Leave a comment:


  • mattthemuppet
    replied
    Don't be afraid to tell us how you really feel A.K.

    Leave a comment:


  • tylernt
    replied
    Originally posted by vpt View Post
    Basically instead of using the crank case as the air pump, using forced induction and leave the crank case sealed to use an oil system.
    Check out the DeltaHawk Diesel aircraft engine.

    Leave a comment:


  • A.K. Boomer
    replied
    I cannot believe the lengths that some people will go through to design an engine with no real added benefits yet with a ton of pitfalls...

    the machining complexity is just a nightmare, the rebuild technology is non-existent as are any real bennies,,,

    This guy deserves and A+++ for effort, unfortunately someone should have slapped him directly in the face and shouted "pull your head out of your arss man" before the project even got started...
    there are some very very intelligent people in this world - who are also really really stupid...

    You will never ever see an abortion like this make it to major production and actually be successful.

    Leave a comment:


  • Willy
    replied
    Originally posted by vpt View Post
    I like 2 cycle engines.

    I have an idea in my head on how to build a 2 cycle engine which would still have the conventional 4 cycle type oiling system but still the 2 cycle part of no valves and fires on every stroke.

    Basically instead of using the crank case as the air pump, using forced induction and leave the crank case sealed to use an oil system.

    Andy, albeit with a few changes, it sounds like you have reinvented the 2 stroke Detroit Diesel 53-71-92-149 series of engines, the number signifies the cubic in displacement per cylinder. Very reliable engines that were in service for a loong time.
    Having put at least a million miles on the 8v71 and 8v92 series engines I have a lot of respect for them.
    But their time has come and gone as they simply could not be competitive against the 4 strokes in terms of fuel efficiency and emissions requirements.

    Leave a comment:


  • mattthemuppet
    replied
    thanks for the link dp, makes a lot more sense now. Certainly looks really cool and good to see that people are still thinking outside the box. Especially for range extenders/ generators where you can design the engine to fairly narrow operating parameters. Then again, Wankel engines were lauded as paragons of power/ volume, but practical experience showed that they were thirsty, torque-less oil sumps (however cool). Given the decades of intensive research into conventional IC engines, I'd still put my money on them being around for a while yet.

    Leave a comment:


  • vpt
    replied
    I like 2 cycle engines.

    I have an idea in my head on how to build a 2 cycle engine which would still have the conventional 4 cycle type oiling system but still the 2 cycle part of no valves and fires on every stroke.

    Basically instead of using the crank case as the air pump, using forced induction and leave the crank case sealed to use an oil system.

    Leave a comment:


  • willmac
    replied
    You might have heard the engine once and once only, for probably a very short period of time before permanent deafness set in. The Crecy apparently raised the limits of what was meant by exhaust noise to an entirely new level. Legend has it that when it was tested at Derby, the noise was clearly heard in Nottingham (about 15 miles away) and set the air raid sirens off.

    Leave a comment:

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