# Porsche's newly-patented SIX STROKE engine **URL:** \ **Category:** General Discussion\ **Tags:** porsche\ **Created:** [September 20, 2024, 12:42pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340 "2024-09-20T12:42:08Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [September 20, 2024, 12:42pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/1 "2024-09-20T12:42:08Z")
I would hate to imagine how much it would cost to repair one of these engines with their varying-length stroke. > **[Porsche Just Patented a Radical Engine Design—Here's How It Works](https://www.motortrend.com/news/porsche-engine-patent-stroke-explained/)** > > The German automaker sees your four-stroke engine and raises you... two more strokes. ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [September 20, 2024, 12:56pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/2 "2024-09-20T12:56:30Z")
I can’t imagine it having any recalls or warranty issues at all… Should be very dependable from day one… 🤦‍♂️ ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [September 20, 2024, 12:58pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/3 "2024-09-20T12:58:04Z")
Friend had a newer Infiniti with VC motor. I wasn’t keen on technology but he said he had platinum warranty. Just sold it and got a new Mercedes. So much for warranty. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [September 20, 2024, 2:01pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/4 "2024-09-20T14:01:50Z")
My head hurts, but then I still cannot comprehend how a WW I radial aircraft engine works☹️ ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [September 20, 2024, 2:35pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/5 "2024-09-20T14:35:34Z")
> [@Purebred](#): > > I still cannot comprehend how a WW I radial aircraft engine works Well, they were ‘rotary’ engines, not just ‘radial’. The engine spun with the prop, resulting in huge gyroscopic forces that made the airplane a handful to fly. More here: [Rotary engine - Wikipedia](https://en.wikipedia.org/wiki/Rotary_engine) ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [September 20, 2024, 2:49pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/6 "2024-09-20T14:49:43Z")
My WAG is that we’ll see the six stroke in racing engines first, unless they are against the rules. Cost isn’t the most important issue of the engine. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [September 20, 2024, 3:01pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/7 "2024-09-20T15:01:01Z")
But I’m guessing this is for emissions, not power, so racing might be out. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [September 20, 2024, 3:03pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/8 "2024-09-20T15:03:13Z")
I think the 6 stroke patent may be a “red herring”. The real innovation may be the crankshaft mechanism. It may be a mechanical solution to the Atkinson cycle engine problem… a longer power stroke with a shorter intake stroke. This is currently done with cam timing but may be more efficient with this crank system. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [September 20, 2024, 3:15pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/9 "2024-09-20T15:15:34Z")
I wonder if this concept will be as “successful” as Mazda’s Miller Cycle engines were. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [September 20, 2024, 3:21pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/10 "2024-09-20T15:21:13Z")
Or Nissan/Inifiniti’s variable compression engine, which doesn’t seem better than competitor’s turbo 2.0 L engines in spite of its complexity. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [September 20, 2024, 3:27pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/11 "2024-09-20T15:27:18Z")
> [@texases](#): > > Nissan/Inifiniti’s variable compression engine, which doesn’t seem better than competitor’s turbo 2.0 L engines I never understood why this complex design was chosen. SAAB did one of these as well with similar lack of success. With electronic controls, a turbocharged engine can accomplish very similar results by controlling the boost. My old turbo SAAB had a very flat torque curve - actually 2 torque peaks - controlled by the ECU. It cranked in boost at very low RPM and then bled some off boost in the midrange RPMs and let it come back at higher RPM. Made the boost curve look like a big 'dip" but made the flat torque curve. I haven’t collected date on the Audi, but I’d bet it does similar things. ---
**Author:** ![ledhed75](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@ledhed75](https://community.cartalk.com/u/ledhed75)\ **Post date:** [September 20, 2024, 4:05pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/12 "2024-09-20T16:05:23Z")
Wouldn’t surprise me if friend got a “luxury” repair bill that the “platinum” warranty didn’t cover. Seems like that happens more often than not. Hmm. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [September 20, 2024, 4:28pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/13 "2024-09-20T16:28:05Z")
Two, aware of those, have a model of a rotary in a WW I biplane, arg, cannot remember the manufacturer,Spad(?), maybe French. Those especially make me wonder how they were carbureted. As noted before, flew in a Ford, three radial engines. BTW, my comment was facetious. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [September 20, 2024, 4:33pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/14 "2024-09-20T16:33:37Z")
> [@Purebred](#): > > have a model of a rotary in a WW I biplane, arg, cannot remember the manufacturer,Spad(?), maybe French. Could it be an Anzani engine? > **[Anzani 20-Cylinder Aircraft Engine](https://oldmachinepress.com/2021/10/15/anzani-20-cylinder-aircraft-engine/)** > > The Anzani 20-cylinder radial was one of the largest and most-powerful aircraft engines when it was first run in 1913. However, sales of the engine were few, and World War I put an end to productio… ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [September 20, 2024, 5:11pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/15 "2024-09-20T17:11:42Z")
Wowser, quite advanced for 1913. To my knowledge, WWI fighters only used single row radials. Found it: Nieuport 11 biplane ![IMG_2618](https://global.discourse-cdn.com/cartalk/original/3X/3/8/388c9b153536ac0a0da64aea91881344165b82d5.jpeg) To bring it back to cars, some WWI AC were powered by OHC engines. Yet for the most part, with a few notable exceptions, American cars were powered by flatheads until Olds/Caddy OHV V8 in 49, Studebaker OHV V8 in 51. I need not go on, most of you know the development of automotive engines. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [September 20, 2024, 6:10pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/16 "2024-09-20T18:10:49Z")
> [@Purebred](#): > > Yet for the most part, with a few notable exceptions, American cars were powered by flatheads until Olds/Caddy OHV V8 in 49, Studebaker OHV V8 in 51. Yup! Buick actually led the way–in 1903–but other manufacturers were slow to follow them. > **[111 years ago, Buick invented the modern performance engine](https://www.roadandtrack.com/car-culture/a7931/buicks-111-birthday/)** > > Buick has a long and storied history, but it all started with an innovation we take for granted: the overhead valve. The only problem was, the notion ruined the fledgling company and then saved it. ---
**Author:** ![TwinTurbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@TwinTurbo](https://community.cartalk.com/u/TwinTurbo)\ **Post date:** [September 20, 2024, 7:54pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/17 "2024-09-20T19:54:04Z")
Imagine my surprise at seeing an overly complex mechanical design of German origin… 😀 ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [September 20, 2024, 8:16pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/18 "2024-09-20T20:16:10Z")
> [@TwinTurbo](#): > > Imagine my surprise at seeing an overly complex mechanical design of German origin… To paraphrase the Captain Renault character in Casablanca… _I’m shocked!_ [![](https://global.discourse-cdn.com/cartalk/original/3X/b/6/b6544780c36f6bb9f9be4e825e038feb71597207.jpeg "Casablanca gambling? I'm shocked!") ](https://www.youtube.com/watch?v=SjbPi00k_ME) Claude Rains was really good in that role. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [September 20, 2024, 8:32pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/19 "2024-09-20T20:32:12Z")
Likely the most advanced aircraft engine from WW1 would be the Hispano Suiza water-cooled, overhead cam V8. Designed by a Swiss engineer and built in Spain as well as in the US under license. All aluminum block/head. The head wasn’t separate from the bores so no head gasket worries. The crankcase was magnesium, I think. ![image](https://global.discourse-cdn.com/cartalk/original/3X/0/9/09664251a3f89a3fe7b73b685a169a35fcd21392.jpeg) ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [September 20, 2024, 8:33pm UTC](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340/20 "2024-09-20T20:33:52Z")
One of the reasons the SPAD was so successful. [Next page](https://community.cartalk.com/t/porsches-newly-patented-six-stroke-engine/196340.md?page=2)