Comments by "John Burns" (@johnburns4017) on "How Rotary Engines Work - Mazda RX-7 Wankel - Detailed Explanation" video.

  1. +Engineering Explained Rotron, who specialise in UAV applications of rotary engines have designed and built an engine to operate on diesel fuel for NATO. An innovation is flame propagation. This ensures the flame burns smoothly across the whole moving combustion chamber. The fuel is pre-heated to 98C before injection into the combustion chamber. Four spark plugs are utilised aligned in two pairs. Two spark plugs ignite the fuel charge at the front of the rotor as it moves into the combustion section of the housing. As the rotor moves the fuel charge, the second two fire a fraction of second behind the first pair of plugs igniting near the rear of the rotor at the back of the fuel charge. Lazer ignition using one plug can do the same. There is substantial ogoing R&D on rotaries. Put all the advances into one package and it is bye, bye for the heavy, cumbersome piston crankshaft engine. Haver an electric transmission using electric traction motors and rotaries are here to stay. In series hybrid a rotary would only be an part time engine.
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  2. The real doktorbimmer  Please get therapy. Think of your family who have to put up with you. You are obviously very old and senile. 
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  3. Dustin Comp What put makers off the wankel was also the licence fees. That wasn't an issue in piston engines.  Yes, the Piston engine in the 1950s was not a great thing at all - and still is not.  80% of the fuel in a tank is wasted. 
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  4. The real doktorbimmer Benz have a lot invested in antiquated piston technology. The 1970s fuel embargoes and subsequent fuel price hypes reduced the Wankel's appeal. Nothing else. 
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  5. The real doktorbimmer Mazda make racing rotaries and are introducing the RX-Vision. bimmer you are telling lies again aren't you? A bit of a Tom Pepper. Yes you are.
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  6. The real doktorbimmer M-B never invested heavily in rotaries at all. They made a rotary for the C111 concept car, that's all.  'The second version of this 300 km/h thunderbolt is propelled by a 350 hp (257 kW) four-rotor Wankel engine. Its turbine-like characteristics and incredible output figures make this vehicle concept perfect. Mission accomplished.' Source: ‘Linzer Volksblatt′, 23 August 1969 Also, 'The more stringent emissions legislation in the United States was to prove an added complication.' The Arab oil embargo and USA emissions reduced the rotary's appeal. Nowdays the problems of the 1960/70 have been overcome.  bimmer is silly again - sorry, silly all the time.
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  7. The real doktorbimmer please get therapy.
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  8. The real doktorbimmer Plantpot, you said it has never won a race then said it had. Please get therapy. Please.
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  9. The real doktorbimmer please get therapy. Please.
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  10. The real doktorbimmer May I have permission to mention you in my next book? It is about lunacy.
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  11. Mickey the Luxray The real doktorbimmer does sound like a stuck record indeed.
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  12. Mickey the Luxray It appears you believe what this nut writes.
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  13. The same amount that blow any engine by not checking oil.
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  14. People do care. People do. :)
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  15. Liquid Piston is another version of a Rotary. "twice the fuel economy of a gasoline engine over a typical drive cycle". They are one tenth of the size and weight. A few weeks ago: DARPA awards LiquidPiston $2.5M to advance further X4 rotary engine prototype http://www.greencarcongress.com/2016/12/20161214-liquidpiston.html DARPA funds 30 KW X4 liquid piston engine that is 90 times lighter than a conventional 2700 lb military 30 KW diesel generator http://www.nextbigfuture.com/2016/12/darpa-funds-30-kw-x4-liquid-piston.html The US gvmt takes it very seriously.
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  16. Bimmer McBimface,..... definition... obsolete ˈɒbsəliːt/Submit adjective 1. no longer produced or used; out of date. The rotary is produced and used.
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  17. +Junaid Mohammed Mazda are to launch the RX-Vision next year. Rotaries are used in UAVs. Many companies are using them.
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  18. +chitlitlah Mazda claim to have cracked it in the RX-Vision.
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  19. +Andrew Solis Mazda are doing R&D in laser ignition. Liverpool university did a hell of a lot as well.
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  20. +RexSpec06 The disadvantages can be ironed to elevate the engine over piston designs.
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  21. +William Su Yes this doktorbimmer is some sort of nutter.
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  22. COMMENT You are so wrong and need to learn how to use a keyboard. 
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  23. Johnny Outterbridge Rotron in England are developing a diesel fuel burning rotary using spark ign not compression ign. It is to conform to NATO's single fuel. The diesel fuel will act as a lubricant for the seals before being burnt.
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  24. Dustin Comp Yes to celebrate 50 years of Mazda rotaries.
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  25. Dustin Comp 50 years is 2017.  http://www.topgear.com/car-news/concept/meet-rx-vision-mazdas-gorgeous-rotary-engined-sportscar http://www.autocar.co.uk/car-news/motor-shows-tokyo-motor-show/mazda-rx-vision-rotary-engined-sports-car-concept-revealed
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  26. Dustin Comp I'm more interested in the engine :)
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  27. Dustin Comp Good idea.
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  28. Dustin Comp Benz never sold any. They did the research in the 1960s. A looooooooong time ago. Matters have changed. 
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  29. Dustin Comp It is called the RX-Vision. Mazda appear to have done great job.  Even they stated rotaries do not like to be revved up and down and are very efficient at constant loads and speeds. BUT!  Mazda are introducing a rotary with a conventional drive transmission, in short one that revs up and down a lot. They say they have sorted the problems. If they have sorted the problems when revving up and down then on a constant speed, as in a range-extender, they will take over for sure.   The rotary is one third of the weight and size and with an amazing power/weight ratio. Ideal for a hiding a range extender (a part time engine) near the spare wheel.
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  30. User Name wrote: ' It does best in constant rpm situations or high speed applications like a light weight sports car.' The niche wankels are filling is range-extenders where the engine only turns a generator or UAVs where it is always running at high speed. They then are superior to piston engines. The small size, low weight and amazing smoothness will tip the scales.  Mr Takashi Yamanouchi, the global CEO of Mazda stated, "The rotary engine has very good dynamic performance, but it's not so good on economy when you accelerate and decelerate. However, with a range extender you can use a rotary engine at a constant 2,000rpm, at its most efficient. It's compact, too." +User Name wrote: 'The downside of the engine is its lack of reliability, the excessive use of oil, and the terrible emissions.' Mazda are introducing the RX-Vision next year, which is direct drive, and claim to have solved the fuel and emissions problems. I do not doubt them. Use the engine as a range extender and it is bye, bye piston engine. 
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  31. The real doktorbimmer The RX-Vision is to celebrate 50 years of Mazda rotary cars. Here it is: https://cdn3.vox-cdn.com/thumbor/x9Xg5L4qOctQE8AkxUjYP2OT_j0=/0x0:2039x1359/1280x854/cdn0.vox-cdn.com/uploads/chorus_image/image/47532885/IMG_0484.0.0.jpg Mazda will use the Skyactiv-R engine in the RX-Vision. Please get therapy. Think of your family. 
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  32. The real doktorbimmer Mazda have the Skyactiv-R engine. You must stop making things up.  Wankels are made by 5 companies around the world. 
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  33. User Name The Skyactiv-R works. Mazda gave some details of it. They are planning the production lines for it. Again. As a Range-extender the piston engine is NOT cleaner or more efficient as range-extender. Read and understand what I wrote. Do not go by old wives tales or take notice of idiots. 
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  34. User Name You never understood at all. Sad but true.  http://www.topgear.com/car-news/concept/meet-rx-vision-mazdas-gorgeous-rotary-engined-sportscar Kiyoshi Fujiwara, Mazda’s head of R&D stated: “it will be at the same level for an equivalent standard petrol engine.”   'It’s a “next generation” rotary engine christened SKYACTIV-R that Mazda says addresses the three perennial stumbling blocks for Wankel engines: economy, emissions and reliability.' There you go. 
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  35. User Name I am only interested in the engine and that has been R&D's. Mazda do not do that for nothing. It costs. Mazda are not a gigantic company like GM, Ford, etc.  They put money into R&D where it is needed.   You are really dumb. He is on about a discontinued engine that WILL NOT be going into any new Mazda. Then on about antiquated V8s. 
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  36. User Name  Masamichi Kogai, Mazda's president  and chief executive says: “We've had 50 years of the rotary engine,” he said. “It hasn't been an easy path, but it will come back one day.” He also said: "but we continue to develop the engine. Keep your eyes on Mazda." http://www.telegraph.co.uk/cars/news/mazda-reveals-rx-vision-concept/
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  37. User Name You are an idiot! The Skyactiv-R does exist. 
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  38. User Name The R&D is ongoing. They are not telling lies. If they did, such a company would be dead. 
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  39. User Name​ You have a vivid imagination. Are you an aficionado of Ned Ludd?
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  40. User Name You are saying a reputable company is lying.
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  41. User Name​ Mazda stated R&D was ongoing and that they had met fuel and emissions. They even have a name for it Skyactiv-R. You are still saying they are lying.  Mazda are not fishing for money. They are quite BIG.
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  42. User Name You are clearly implying Mazda are lying. 
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  43. nfsgt500 they are amazing.
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  44. User Name Idiotic. 
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  45. User Name You have no evidence whatsoever. Just myth. 
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  46. User Name Drivelous myth! Modern oil is designed to be burnt without emissions problems.  When the engines are run at a constant speed they shine, as in range-extender applications.  Mazda admitted they have solved any fuel and emissions problems. 
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  47. Bimmer McBimface,..... definition... obsolete ˈɒbsəliːt/Submit adjective 1. no longer produced or used; out of date. The rotary is produced and used.
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  48. The real doktorbimmer Bimmer McBimface, the rotary is made by many makers.
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  49. The real doktorbimmer Bimmer McBimface, are the voices louder today. How loud?
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  50. Bimmer McBimface, that was 50 years ago.
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  51. The real doktorbimmer Bimmer McBimface,..... definition... obsolete ˈɒbsəliːt/Submit adjective 1. no longer produced or used; out of date. The rotary is produced and used.
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  52. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  53. The real doktorbimmer Bimmer McBimface, what are the voices telling you today?
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  54. The real doktorbimmer Bimmer McBimface, are the voices louder today.
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  55. The real doktorbimmer Bimmer McBimface, that was about 50 years ago.
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  56. The real doktorbimmer Bimmer McBimface, what did the voices say?
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  57. The real doktorbimmer Bimmer McBimface, the voices said things about Mazda? Amazing.
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  58. mercedesbenzformula1 Mazda are introducing the first HCCI ign engine pistons): http://www.motorauthority.com/news/1108403_report-mazda-to-launch-hcci-engine-in-2018 Mazda have also done a lot of research with HCCI in rotaries. Once HCCI is in a rotary doing constant speed range extending duties, the piston engine is no more.
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  59. The real doktorbimmer Bimmer McBimface, what else did the voices say?
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  60. Fafafoh1gh That has been solved.
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  61. david appleton Look at my posts on this video. All is there.
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  62. dean caulton The Wankel does not suffer from poor combustion. Solved.
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  63. The real doktorbimmer Get therapy please
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  64. Centrifugal force pushes the apex seal onto the housing surface forming a firm seal. Apex seal lift-off can develop between the apex seal and housing in light-load conditions when imbalances in centrifugal force and gas pressure occur. However, running the engine at higher revolutions will cause more wear, as in any engine. So running wankels as constant speed range-extenders the minimum level of revs has to be determined to reduce wear and turn the generator. Mazda came up with 2,000 rpm. 
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  65. Dappsy95 Mazda claim to have solved the non-burning of some of the fuel by laser ign and other amendments in the Skyactiv-R
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  66. ***** seal wearing is not a problem. That is an old wives tale. The oil can be specifically made for burning.
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  67. ***** I saw his video., It was nonsense. The rotary is not dead at all. Anyone who knows anything about would know that. Get your mind out of cars. 
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  68. ***** Oh for Gods sake! You have not a a clue! When running at a constant speed as in a range-extender is is MORE efficient!! The power/weight ratio is vastly superior. 
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  69. ***** Not another nutter!!!!  He thinks doktorbimmer is sane and posts to him. It is getting worse. Bimmer thinks all these new wankel engines in UAVs made themselves. doktorbimmer keeps writing that no one makes rotary engines. A few pointed him to the companies that do and he kept repeating like a conditioned robot that one makes them. He trolls forums looking to castigate rotary engines. He is insane!  Or paid to do it.
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  70. The real doktorbimmer You are an idiot! 
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  71. ***** R&D has the rotary more efficient in constant speed range-extender running. Range-extenders are part time engines. As hybrid are becoming the norm the rotary is set to take over being one third of the weight & size with vastly superior power/weight ratio.  As one engineer said to me, even if rotaries use more fuel, they will be used so little being part time engines that it would not matter. They size and weight is what appeals to car makers to hide the range-extender.  But rotaries do return better mpg.  Bimmer is an idiot.
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  72. Mickey the Luxray You haven't agreed anything with me. Where the Wankle is going? Its niche use? Read my posts.
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  73. Mickey the Luxray Mazda re not the only people advancing the rotary.
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  74. texasdee slinglead The Mazda at LeMans used less fuel than the piston cars. It ran for 24 hours full belt around track. When stripping the engine after the race, it was good enough to run another 24 hr race. A phenomenal engine indeed.
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  75. The real doktorbimmer Are you also in the NRA?
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  76. This engine is over 30 years old. They have changed a bit since then.
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  77. Mazda are \R&Ding HCCI ign.
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  78. RX-Vision being introduced in 2017. All sorted.
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  79. Rasta Lion The thermal efficiency is clearly getting better. Laser and HCCI ign offers superior efficiencies. As you say, the heat will not increase as efficiency rises.
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  80. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  81. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  82. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  83. The real doktorbimmer Bimmer McBimface, are the voices louder today.
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  84. The real doktorbimmer Bimmer McBimface, are the voices even louder today. Do they scream?
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  85. Bimmer McBimface, you must stop making things up.
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  86. Bimmer McBimface,..... definition... obsolete ˈɒbsəliːt/Submit adjective 1. no longer produced or used; out of date. The rotary is produced and used.
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  87. The real doktorbimmer Bimmer McBimface, the rotary is made by many makers.
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  88. Jason Felker The voices told Bimmer.
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  89. The real doktorbimmer Bimmer McBimface, are the voices louder today.
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  90. The real doktorbimmer Bimmer McBimface, are the voices even louder today. How loud are they?
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  91. The real doktorbimmer Bimmer McBimface, what did the voices say?
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  92. Try the ign system first. Do not take any notice Bimmer McBimface.
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  93. The real doktorbimmer Bimmer McBimface, there are set procedures for engine diagnostics.
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  94. Bimmer McBimface, you must stop making things up.
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  95. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  96. The real doktorbimmer Bimmer McBimface, I have seen lots of UAVs.
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  97. The real doktorbimmer Bimmer McBimface, I have seen lots of UAVs.
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  98. The real doktorbimmer Bimmer McBimface, you must stop making things up.
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  99. The real doktorbimmer Bimmer McBimface, your life is one of pure fantasy. You are happy in that world, so please stay there as the real world will make you unhappy.
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  100. The real doktorbimmer Bimmer McBimface, please stay in fantasy world.
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  101. The real doktorbimmer Bimmer McBimface, is this "we", the voices?
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  102. Bimmer McBimface,..... definition... obsolete ˈɒbsəliːt/Submit adjective 1. no longer produced or used; out of date. The rotary is produced and used.
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  103. AIE UK use ceramic rotor tip seals. No oil needed. Their engine has a sealed oil system
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  104.  @sandervanderkammen9230  Doktorbimmer, a quiz. Name the Mazda model currently under production using a rotary engine? 20 points for the correct answer.
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  105.  @sandervanderkammen9230  BZZZZZZZZZZT! Wrong answer. Doktorbimmer, the name of the Mazda model currently under production using a rotary engine, is the... 🍾🎊🩸 Mazda MX-30 R-EV 🍾🎊🩸 Zero points Bimmer. Zero. Better luck next time.
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  106.  @sandervanderkammen9230  docktorbimmer, a quiz. Name the latest car Mazda dealers are issuing brochures and taking orders for? 20 points for the correct answer.
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  107.  @sandervanderkammen9230  BZZZZZZZZZZT! Wrong answer. Doktorbimmer, the name of the latest car Mazda dealers are issuing brochures and taking orders for. Is the..... 🍾🎊🩸 Mazda MX-30 R-EV 🍾🎊🩸 Zero points Bimmer. Zero. Better luck next time
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  108. The new Mazda MX-30 R-EV, series-hybrid with a rotary engine. Fuel consumption is comparable to piston engines so I have read. But it is very smooth, light and small. So, when running on battery power alone, there is less weight to pull improving fuel consumption to a heavy piston engined series-hybrid when running from the battery alone. Excellent advantage. Being only a part time engine, the fuel consumption is not that important as rarely will the car be used using the petrol rotary engine opposed to running off the battery. Typical overall annual fuel running costs, electricity and gasoline purchased, is what matters.
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  109. It is not dead. Used in UAVs
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  110. Disadvantages have been worked on and largely eliminated.
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  111. Probably not needed, or reduced, when running on hydrogen.
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  112.  @sandervanderkammen9230  Doktorbimmer a quiz. Name the car Mazda are introducing with a Wankel engine? 20 points for the correct answer.
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  113.  @sandervanderkammen9230  BZZZZZZZT! Wrong answer. docktorbimmer, the name of the car Mazda are introducing with a Wankel engine is the.... 🍾🎉🎊 MAZDA MX-30 R-EV 🍾🎉🎊 Zero points bimmer. Zero. Better luck next time.
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  114.  @sandervanderkammen9230  doktorbimmer, a quiz. Name type of engine in the MAZDA MX-30 R-EV, currently on sale? 20 points for the correct answer.
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  115. How simple do you want it?
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