7 ms·

Wankels can be made extremely compact so that might have something to do with it, i.e it has both very high power to weight and power to volume specs. I honestl

by jpgvm 3y ago

Wankels can be made extremely compact so that might have something to do with it, i.e it has both very high power to weight and power to volume specs. I honestly don't know if that is the reason though, perhaps someone more knowledgeable of the specifics of range extenders might chime in but I imagine that is an important factor.

sethhochberg 3y ago
They have a pretty narrow power band (produce efficient max power at a small range of RPMs) which always somewhat limited their use for normal ICE cars, but is a pretty workable constraint for an electrical generator. So you have compact size, good power to weight ratio, and power limitations that don't really matter for range extender purposes. Lots of potential. I can't find the article right now, but I'd swear I remember discussion here a handful of months ago about a startup marketing a similar EV range extender engine design.
- HPsquared 3y ago
  They have low compression though, which really hurts the thermal efficiency.
- coryrc 3y ago
  Then you may as well use a gas turbine, which is pretty much better in every way that matters for generating purposes.
  - iamthirsty 3y ago
    Except extremely complex and usually hard to repair and inefficiently sized for a consumer car.
    - userbinator 3y ago
      Actually far simpler than a piston engine; the fuel consumption and high production cost was what made them become extinct. https://en.wikipedia.org/wiki/Chrysler_Turbine_Car https://en.wikipedia.org/wiki/Chrysler_Turbine_Car
      - kyleee 3y ago
        Of course Jay Leno has one; not sure if he’s featured it on his youtube channel (I don’t recall seeing it). Awesome
        01HNNWZ0MV43FF 3y ago
        Yep I've seen it on his YouTube. The "EcoJet" https://www.youtube.com/watch?v=10q9_pB6unU https://www.youtube.com/watch?v=10q9_pB6unU He said that they had to put really big brakes on it. I guess for some reason you can't just have a clutch. Personally if I was going for eco I'd want something more clever than "bigger brakes" but maybe building something like a Hybrid Synergy Drive is harder than building a turbine.
        SoftTalker 3y ago
        > He said that they had to put really big brakes on it. There's no compression braking (engine braking) with a turbine engine.
        ssl-3 3y ago
        Also: While Leno seems to be very interested in restoration, he also is clearly very interested in staying alive. He's got a ton of old cars that have been modified to have very good, modern disc brakes. The EcoJet is just one of many examples of his cars that have been improved in this way.
        jasonwatkinspdx 3y ago
        Here's his video on his 1960's one, which is worth watching and some neat animation footage from the period talking about the design: https://www.youtube.com/watch?v=b2A5ijU3Ivs https://www.youtube.com/watch?v=b2A5ijU3Ivs You can tell Jay genuinely loves cars and the history of the auto world. He's indulging his hobby interest in a way that will preserve these vehicles for future generations to see and learn about. As far as ways rich people can spend their money that's a pretty cool one in my book.
  - WalterBright 3y ago
    Gas turbine cars have been built, but they tend to set anyone on fire if they walk behind the car. https://bandimere.com/previewing-the-brakes-plus-jet-car-nationals/ https://bandimere.com/previewing-the-brakes-plus-jet-car-nat...
    - JALTU 3y ago
      Oh! The Batmobile!
    - coryrc 3y ago
      You're probably being silly, but for anyone else, gas turbines as used for generators don't have jet exhausts on them, i.e. https://www.youtube.com/watch?v=yR5oVn-Fvvg https://www.youtube.com/watch?v=yR5oVn-Fvvg
      - philwelch 3y ago
        So what do they do with the exhaust?
        elevatedastalt 3y ago
        The reason jet engines have that sort of exhaust is because the primary purpose of the gas turbine there is to dump all the excess energy into the exhaust to make it go fast (so that the plane can be pushed ahead by the reaction force). They produce very little power, just enough to power the Auxiliary Power Unit (that manages the plane electronics, air-conditioning etc.). If you want to use a gas turbine for producing power, you will set it up such that most of the energy goes into the work generated, rather than the exhaust, so it would be a cooler, slower exhaust, similar to an IC-engine.
        01HNNWZ0MV43FF 3y ago
        Depending on the plane and engine. Big jetliners have high-bypass turbines where they do intentionally produce a lot of torque, to spin a large compressor fan, but most of the fan air does not go through the combustion step, it's just used to react off of.
  - fodkodrasz 3y ago
    Except for consumption, waste heat generated, size.
  - mrighele 3y ago
    If all you need is power generation, use a nuclear reactor. Time to bring back the Ford Nucleon ! [1] Comes with daily free health checkup (in form of an X-Ray). [1] https://en.wikipedia.org/wiki/Ford_Nucleon https://en.wikipedia.org/wiki/Ford_Nucleon
    - xattt 3y ago
      Aaahktually, the radiation given off the reactor would be too “hard” and useless in soft-tissue imaging. Maybe neutrino imaging?
  - user_7832 3y ago
    Apparently they really don't scale well. I found this reddit post explaining it better: > Gas turbines scale extremely poorly. They rely on small clearance between the rotating blades and the housings for efficiency. The smaller the turbine, the greater the relative clearance and the more energy is lost. Gas turbines, at least with established technology, make very little sense below 300ish HP. As a real life comparison: A Robinson R44 piston helicopter and an R66 turbine Helicopter have almost identical design, dimensions, and weights. Power is around 250 / 300hp. The former burns between 50-60L of gas per hour at cruise, the latter around 90-110L of Jet fuel. 1 - https://old.reddit.com/r/cars/comments/s8vkv8/are_wankel_engines_just_better_for_horsepower/htpvc6i/ https://old.reddit.com/r/cars/comments/s8vkv8/are_wankel_eng...
    - bob1029 3y ago
      300 HP = ~220 kW I believe a Tesla can charge its battery pack at approximately this rate.
      - avalys 3y ago
        What's your point? There's no reason to have a generator that charges the pack in a hurry. It really only needs to cover the maximum sustained average draw - driving up an extended grade at high speed. That's a lot less than 300 hp - it's probably not more than 80 hp or so at most.
        Baeocystin 3y ago
        I remember back in the 90's in auto shop we calculated that you'd only need 15-25hp continuous to essentially power all of a car's needs if you could smooth demand for power from the peaks over the length of the trip. It stuck with me as a surprisingly small number, but it mathed out, even including heating and AC. Cars are both larger and more aerodynamic nowadays; I wonder if the amount would still be the same?
        DarmokJalad1701 3y ago
  - alexose 3y ago
    Cosworth appears to have developed a microturbine for this purpose. And it (maybe?) has found a home in Ariel's latest insane car: https://www.carscoops.com/2022/09/ariel-hipercar-is-an-1180-hp-ev-with-a-gas-turbine-range-extender/ https://www.carscoops.com/2022/09/ariel-hipercar-is-an-1180-...
  - cjbgkagh 3y ago
    AFAIK I think there is some difficulty in getting turbines to scale down efficiently with a need of a recouperator to maintain a higher core temperature for better efficiency. The recouperator is additionally expensive on top of the already expensive turbine cost. Having a rotary with a turbo should be able to work better at a lower scale for a pretty cheap production cost.
  - cranky908canuck 3y ago
    Want to comment explicitly, though I upvoted a similar comment ... a gas turbine in a consumer car will be a maintainability nightmare (where do you find the technicians that can do anything with it?), at least in the current automotive ecosystem.
  - simne 3y ago
    Gas turbines are economically effective when larger than about 300hp. This border with time slow lowered, but I don't know, when it will appear somewhere about 50Kw of most popular automobiles (Toyota Corolla, WV Golf, Ford Focus). When scaling down, gas turbines become much more expensive than ICE. For example on small planes market, exist many dual-powered models (in range 200-300hp), and with gas turbine it typically priced twice of ICU-powered with very similar parameters. Range of 1000hp+ on planes are near totally gas turbines.
  - bluedino 3y ago
    Chrysler tried it in the 50's and 60's https://en.m.wikipedia.org/wiki/Chrysler_Turbine_Car https://en.m.wikipedia.org/wiki/Chrysler_Turbine_Car The ideas and innovations back then seemed amazing
- eep_social 3y ago
  Maybe you’re thinking of the Edison kits? They seem to be putting a genset into the truck bed to do EV conversions: https://news.ycombinator.com/item?id=38893567 https://news.ycombinator.com/item?id=38893567
- seltzered_ 3y ago
  > I'd swear I remember discussion here a handful of months ago about a startup marketing a similar EV range extender engine design. Possibly https://liquidpiston.com https://liquidpiston.com Prior discussions: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&query=Liquidpiston&sort=byPopularity&type=story https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
speed_spread 3y ago
In a hybrid vehicle, the gas engine can be run mostly as a generator, which makes it possible to further optimize it for a very specific load. It's possible that such an updated+tuned Wankel could be a great fit for certain applications where space and weight are at a premium. They can simulate lots of it but to get real answers, they have to build the engine and see how it holds up. Also Mazda is a small-ish manufacturer at the Japanese scale. Since Wankels are part of their identity they could decide to build a car with it even though the downsides wouldn't make sense for a "rational" brand like Toyota. It can give them that creative freedom that help make desirable cars and keep Mazda relevant.
- DonHopkins 3y ago
  Mazda Rotary 'Launch': https://www.youtube.com/watch?v=Hdjj52FUsEo https://www.youtube.com/watch?v=Hdjj52FUsEo >These are some of the earliest ads I wrote and directed. Many of these ads cost our client just a couple of hundred dollars. When you look at this early attempt ant animation, it's not surprising that it didn't cost much more as a decent lunch these day! >It's hard to believe now how absolutely 'revolutionary' the rotary engine appeared to be in those days. Many of us expected that they would eventually take over from reciprocating engines completely. >This ad was produced just before the moon landing. >The Agency was Hayes Advertising, Sydney. My producer (and dear friend) was Max Cleary and the Account Director was Vic Violet. Mazda RX-3 Commercial: https://www.youtube.com/watch?v=oHzeGEHWMjo https://www.youtube.com/watch?v=oHzeGEHWMjo >Piston engine goes boing, boing, boing, boing. >Mazda engine goes Hmmmmmmmmmmmmmmmmmmmmmmmmmm. Felix Wankel: https://en.wikipedia.org/wiki/Felix_Wankel https://en.wikipedia.org/wiki/Felix_Wankel >Wankel and the Nazi Party >During the early 1920s Wankel was a member of various radical anti-Semitic organizations. In 1921 he joined the Heidelberg branch of the Deutschvölkischer Schutz- und Trutzbund and in 1922 he became a member of the NSDAP, the National Socialist German Workers Party (or "Nazi Party"), which was banned soon afterwards. Wankel founded and led youth groups associated with a cover-up organization of the NSDAP. With them he conducted paramilitary training, scouting games and night walks.[3] When his high esteem for technical innovations was not widely shared among the German Youth Movement, he was offered instead the opportunity to talk about the issue of technology and education to Adolf Hitler and other leading National Socialists in 1928.[4] >In the meantime Wankel's mother, Gerty had helped founding the local chapter of the NSDAP in his hometown of Lahr. Here Wankel not only rejoined the party in 1926, but also met the local Gauleiter, i.e. regional head of the NSDAP party, Robert Heinrich Wagner. In 1931 Wagner entrusted Wankel with the leadership of the Hitler Youth in Baden. But they soon fell out with each other, because Wankel tried to put a stronger emphasis on military training, whereas Wagner wished for the Hitler Youth to be a primarily political organization. In a particularly bitter and ugly controversy Wankel publicly accused Wagner of corruption. Wagner retaliated by stripping Wankel of his office by early 1932 and managed to have him expelled from the party in October 1932. >Wankel, who sympathized with the social-revolutionary wing of the NSDAP with Gregor Strasser, then founded his own National Socialist splinter group in Lahr and continued his attacks on Wagner. Since the Nazis' seizure of power on 30 January 1933 had strengthened his position, Wagner had Wankel arrested and imprisoned in the Lahr jail in March 1933. Only by intervention of Hitler's economic adviser Wilhelm Keppler and Hitler himself, was Wankel set free in September 1933.[5] A fellow native of Baden and member of Reichstag from 1933 to 1945, Keppler had been a friend of Wankel and an ardent supporter of his technological endeavors since 1927. He now helped Wankel to get state contracts and his own Wankels Versuchs Werkstätten experimental workshop in Lindau. >Wankel tried to rejoin the NSDAP in 1937, but was turned down.[6] With the help of Keppler, however, he was admitted to the SS in 1940 in the rank of Obersturmbannführer.[7] Two years later his membership was revoked for unknown reasons.[6]
porphyra 3y ago
nit: it's spelt Wankel not Wankle. Also for those who don't know, it's pronounced /ˈvaŋkl̩/ or /ˈvaŋkəl̩/ in the International Phonetic Alphabet (IPA). In German, "W" is pronounced as "V" in English, and the "e" in the syllable "kel" is reduced to a schwa ([ə]) sound, common in many German pronunciations of unstressed vowels.
- jpgvm 3y ago
  Sadly enough I did know that but wrote it wrong anyway! Fixed, thanks. :)

by jpgvm 3y ago

sethhochberg 3y ago

They have a pretty narrow power band (produce efficient max power at a small range of RPMs) which always somewhat limited their use for normal ICE cars, but is a pretty workable constraint for an electrical generator. So you have compact size, good power to weight ratio, and power limitations that don't really matter for range extender purposes. Lots of potential. I can't find the article right now, but I'd swear I remember discussion here a handful of months ago about a startup marketing a similar EV range extender engine design.

HPsquared 3y ago
They have low compression though, which really hurts the thermal efficiency.
coryrc 3y ago
Then you may as well use a gas turbine, which is pretty much better in every way that matters for generating purposes.
- iamthirsty 3y ago
  Except extremely complex and usually hard to repair and inefficiently sized for a consumer car.
  - userbinator 3y ago
    Actually far simpler than a piston engine; the fuel consumption and high production cost was what made them become extinct. https://en.wikipedia.org/wiki/Chrysler_Turbine_Car https://en.wikipedia.org/wiki/Chrysler_Turbine_Car
    - kyleee 3y ago
      Of course Jay Leno has one; not sure if he’s featured it on his youtube channel (I don’t recall seeing it). Awesome
      - 01HNNWZ0MV43FF 3y ago
        Yep I've seen it on his YouTube. The "EcoJet" https://www.youtube.com/watch?v=10q9_pB6unU https://www.youtube.com/watch?v=10q9_pB6unU He said that they had to put really big brakes on it. I guess for some reason you can't just have a clutch. Personally if I was going for eco I'd want something more clever than "bigger brakes" but maybe building something like a Hybrid Synergy Drive is harder than building a turbine.
        SoftTalker 3y ago
        > He said that they had to put really big brakes on it. There's no compression braking (engine braking) with a turbine engine.
        ssl-3 3y ago
        Also: While Leno seems to be very interested in restoration, he also is clearly very interested in staying alive. He's got a ton of old cars that have been modified to have very good, modern disc brakes. The EcoJet is just one of many examples of his cars that have been improved in this way.
      - jasonwatkinspdx 3y ago
        Here's his video on his 1960's one, which is worth watching and some neat animation footage from the period talking about the design: https://www.youtube.com/watch?v=b2A5ijU3Ivs https://www.youtube.com/watch?v=b2A5ijU3Ivs You can tell Jay genuinely loves cars and the history of the auto world. He's indulging his hobby interest in a way that will preserve these vehicles for future generations to see and learn about. As far as ways rich people can spend their money that's a pretty cool one in my book.
- WalterBright 3y ago
  Gas turbine cars have been built, but they tend to set anyone on fire if they walk behind the car. https://bandimere.com/previewing-the-brakes-plus-jet-car-nationals/ https://bandimere.com/previewing-the-brakes-plus-jet-car-nat...
  - JALTU 3y ago
    Oh! The Batmobile!
  - coryrc 3y ago
    You're probably being silly, but for anyone else, gas turbines as used for generators don't have jet exhausts on them, i.e. https://www.youtube.com/watch?v=yR5oVn-Fvvg https://www.youtube.com/watch?v=yR5oVn-Fvvg
    - philwelch 3y ago
      So what do they do with the exhaust?
      - elevatedastalt 3y ago
        The reason jet engines have that sort of exhaust is because the primary purpose of the gas turbine there is to dump all the excess energy into the exhaust to make it go fast (so that the plane can be pushed ahead by the reaction force). They produce very little power, just enough to power the Auxiliary Power Unit (that manages the plane electronics, air-conditioning etc.). If you want to use a gas turbine for producing power, you will set it up such that most of the energy goes into the work generated, rather than the exhaust, so it would be a cooler, slower exhaust, similar to an IC-engine.
        01HNNWZ0MV43FF 3y ago
        Depending on the plane and engine. Big jetliners have high-bypass turbines where they do intentionally produce a lot of torque, to spin a large compressor fan, but most of the fan air does not go through the combustion step, it's just used to react off of.
- fodkodrasz 3y ago
  Except for consumption, waste heat generated, size.
- mrighele 3y ago
  If all you need is power generation, use a nuclear reactor. Time to bring back the Ford Nucleon ! [1] Comes with daily free health checkup (in form of an X-Ray). [1] https://en.wikipedia.org/wiki/Ford_Nucleon https://en.wikipedia.org/wiki/Ford_Nucleon
  - xattt 3y ago
    Aaahktually, the radiation given off the reactor would be too “hard” and useless in soft-tissue imaging. Maybe neutrino imaging?
- user_7832 3y ago
  Apparently they really don't scale well. I found this reddit post explaining it better: > Gas turbines scale extremely poorly. They rely on small clearance between the rotating blades and the housings for efficiency. The smaller the turbine, the greater the relative clearance and the more energy is lost. Gas turbines, at least with established technology, make very little sense below 300ish HP. As a real life comparison: A Robinson R44 piston helicopter and an R66 turbine Helicopter have almost identical design, dimensions, and weights. Power is around 250 / 300hp. The former burns between 50-60L of gas per hour at cruise, the latter around 90-110L of Jet fuel. 1 - https://old.reddit.com/r/cars/comments/s8vkv8/are_wankel_engines_just_better_for_horsepower/htpvc6i/ https://old.reddit.com/r/cars/comments/s8vkv8/are_wankel_eng...
  - bob1029 3y ago
    300 HP = ~220 kW I believe a Tesla can charge its battery pack at approximately this rate.
    - avalys 3y ago
      What's your point? There's no reason to have a generator that charges the pack in a hurry. It really only needs to cover the maximum sustained average draw - driving up an extended grade at high speed. That's a lot less than 300 hp - it's probably not more than 80 hp or so at most.
      - Baeocystin 3y ago
        I remember back in the 90's in auto shop we calculated that you'd only need 15-25hp continuous to essentially power all of a car's needs if you could smooth demand for power from the peaks over the length of the trip. It stuck with me as a surprisingly small number, but it mathed out, even including heating and AC. Cars are both larger and more aerodynamic nowadays; I wonder if the amount would still be the same?
        DarmokJalad1701 3y ago
- alexose 3y ago
  Cosworth appears to have developed a microturbine for this purpose. And it (maybe?) has found a home in Ariel's latest insane car: https://www.carscoops.com/2022/09/ariel-hipercar-is-an-1180-hp-ev-with-a-gas-turbine-range-extender/ https://www.carscoops.com/2022/09/ariel-hipercar-is-an-1180-...
- cjbgkagh 3y ago
  AFAIK I think there is some difficulty in getting turbines to scale down efficiently with a need of a recouperator to maintain a higher core temperature for better efficiency. The recouperator is additionally expensive on top of the already expensive turbine cost. Having a rotary with a turbo should be able to work better at a lower scale for a pretty cheap production cost.
- cranky908canuck 3y ago
  Want to comment explicitly, though I upvoted a similar comment ... a gas turbine in a consumer car will be a maintainability nightmare (where do you find the technicians that can do anything with it?), at least in the current automotive ecosystem.
- simne 3y ago
  Gas turbines are economically effective when larger than about 300hp. This border with time slow lowered, but I don't know, when it will appear somewhere about 50Kw of most popular automobiles (Toyota Corolla, WV Golf, Ford Focus). When scaling down, gas turbines become much more expensive than ICE. For example on small planes market, exist many dual-powered models (in range 200-300hp), and with gas turbine it typically priced twice of ICU-powered with very similar parameters. Range of 1000hp+ on planes are near totally gas turbines.
- bluedino 3y ago
  Chrysler tried it in the 50's and 60's https://en.m.wikipedia.org/wiki/Chrysler_Turbine_Car https://en.m.wikipedia.org/wiki/Chrysler_Turbine_Car The ideas and innovations back then seemed amazing
eep_social 3y ago
Maybe you’re thinking of the Edison kits? They seem to be putting a genset into the truck bed to do EV conversions: https://news.ycombinator.com/item?id=38893567 https://news.ycombinator.com/item?id=38893567
seltzered_ 3y ago
> I'd swear I remember discussion here a handful of months ago about a startup marketing a similar EV range extender engine design. Possibly https://liquidpiston.com https://liquidpiston.com Prior discussions: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&query=Liquidpiston&sort=byPopularity&type=story https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

speed_spread 3y ago

In a hybrid vehicle, the gas engine can be run mostly as a generator, which makes it possible to further optimize it for a very specific load. It's possible that such an updated+tuned Wankel could be a great fit for certain applications where space and weight are at a premium. They can simulate lots of it but to get real answers, they have to build the engine and see how it holds up. Also Mazda is a small-ish manufacturer at the Japanese scale. Since Wankels are part of their identity they could decide to build a car with it even though the downsides wouldn't make sense for a "rational" brand like Toyota. It can give them that creative freedom that help make desirable cars and keep Mazda relevant.

DonHopkins 3y ago
Mazda Rotary 'Launch': https://www.youtube.com/watch?v=Hdjj52FUsEo https://www.youtube.com/watch?v=Hdjj52FUsEo >These are some of the earliest ads I wrote and directed. Many of these ads cost our client just a couple of hundred dollars. When you look at this early attempt ant animation, it's not surprising that it didn't cost much more as a decent lunch these day! >It's hard to believe now how absolutely 'revolutionary' the rotary engine appeared to be in those days. Many of us expected that they would eventually take over from reciprocating engines completely. >This ad was produced just before the moon landing. >The Agency was Hayes Advertising, Sydney. My producer (and dear friend) was Max Cleary and the Account Director was Vic Violet. Mazda RX-3 Commercial: https://www.youtube.com/watch?v=oHzeGEHWMjo https://www.youtube.com/watch?v=oHzeGEHWMjo >Piston engine goes boing, boing, boing, boing. >Mazda engine goes Hmmmmmmmmmmmmmmmmmmmmmmmmmm. Felix Wankel: https://en.wikipedia.org/wiki/Felix_Wankel https://en.wikipedia.org/wiki/Felix_Wankel >Wankel and the Nazi Party >During the early 1920s Wankel was a member of various radical anti-Semitic organizations. In 1921 he joined the Heidelberg branch of the Deutschvölkischer Schutz- und Trutzbund and in 1922 he became a member of the NSDAP, the National Socialist German Workers Party (or "Nazi Party"), which was banned soon afterwards. Wankel founded and led youth groups associated with a cover-up organization of the NSDAP. With them he conducted paramilitary training, scouting games and night walks.[3] When his high esteem for technical innovations was not widely shared among the German Youth Movement, he was offered instead the opportunity to talk about the issue of technology and education to Adolf Hitler and other leading National Socialists in 1928.[4] >In the meantime Wankel's mother, Gerty had helped founding the local chapter of the NSDAP in his hometown of Lahr. Here Wankel not only rejoined the party in 1926, but also met the local Gauleiter, i.e. regional head of the NSDAP party, Robert Heinrich Wagner. In 1931 Wagner entrusted Wankel with the leadership of the Hitler Youth in Baden. But they soon fell out with each other, because Wankel tried to put a stronger emphasis on military training, whereas Wagner wished for the Hitler Youth to be a primarily political organization. In a particularly bitter and ugly controversy Wankel publicly accused Wagner of corruption. Wagner retaliated by stripping Wankel of his office by early 1932 and managed to have him expelled from the party in October 1932. >Wankel, who sympathized with the social-revolutionary wing of the NSDAP with Gregor Strasser, then founded his own National Socialist splinter group in Lahr and continued his attacks on Wagner. Since the Nazis' seizure of power on 30 January 1933 had strengthened his position, Wagner had Wankel arrested and imprisoned in the Lahr jail in March 1933. Only by intervention of Hitler's economic adviser Wilhelm Keppler and Hitler himself, was Wankel set free in September 1933.[5] A fellow native of Baden and member of Reichstag from 1933 to 1945, Keppler had been a friend of Wankel and an ardent supporter of his technological endeavors since 1927. He now helped Wankel to get state contracts and his own Wankels Versuchs Werkstätten experimental workshop in Lindau. >Wankel tried to rejoin the NSDAP in 1937, but was turned down.[6] With the help of Keppler, however, he was admitted to the SS in 1940 in the rank of Obersturmbannführer.[7] Two years later his membership was revoked for unknown reasons.[6]

porphyra 3y ago

nit: it's spelt Wankel not Wankle. Also for those who don't know, it's pronounced /ˈvaŋkl̩/ or /ˈvaŋkəl̩/ in the International Phonetic Alphabet (IPA). In German, "W" is pronounced as "V" in English, and the "e" in the syllable "kel" is reduced to a schwa ([ə]) sound, common in many German pronunciations of unstressed vowels.

jpgvm 3y ago
Sadly enough I did know that but wrote it wrong anyway! Fixed, thanks. :)