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@d4a Imagine how precise the worm gear drive positioning would have to be to keep all the planetary gears, and therefore the crank, in line so there isn't any offset and induced warping. I hope all the planetary gears are in some type of single tube and theres one worm drive shifting the whole thing
I don't understand how Porsche can force all atomized unburnt fuel in the bottom of the cylinder during exhaust stage. You have to be throwing some of that unburnt fuel out. You'll also need a new set of rings on the bottom of the piston head.
It's 2024 and the closest we've got to atomic engine cars is a connecting rod end making a shape of the Bohr model electron orbits around a nucleus as it moves. I'll take it!
I'm not an engineer and definitely I don't have money to buy a Porsche. But, in my mind having more moving parts inside the engine is the opposite of simplicity and elegance.
If it's actually measurably more reliable, efficient and powerful it doesn't really matter. A flathead engine might be simple but it's not efficient or powerful, not even really more reliable than a modern overhead cam engine either.
@@theairaccumulator7144 Well, I know that is different things but, an electric engine is more efficient than ICE. and doesn't need this complexity and moving parts inside it. It's lighter and more compact than ICE. Keeping this in mind, it would be not the case to think in the same way for ICE?
Designers embraced the spirit (and possibly drugs) of Ferdinand himself. Old professor probably smiles from depths of hell, somewhat annoyed at lack of electical transmission integration.
@@theleva7 not designers, engineers; they, imo rightfully, pride themselves as being an engineering company that happens to make cars. It's even in their name: Dr. Ing. Porsche AG
But. While German engineers are working on screwing a few more percent of power out of an ICE Chinese engineers are working on solid state batteries that result in 1,000km EV ranges and 10 minute charge times. That’s why Chinese EV production is now greater than all other countries added together. We are asleep at the wheel while China is going to become the global automotive super power of the future through its EV focus.
Although electric car motors are evolving as well. The way they are designed is also very interesting. None of these technologies have to become obsolete, though. The direction has more to do with politics.
Youre gonna hate this take - but it would probably make a really nice range extender. the uneven strokes seem like they would be really good for particulates?
Have you tried headpats and words of affirmation? My man watches this guy all the time and lets me snuggle when I'm needy in the morning. Less nagging more gagging as they say
Bloody genius! I’ve been to the Porsche factory in Weissach and they insisted in NDA and all cameras/phones (laptop cameras covered with tape) left at reception. Unsurprising as there were development and test mules all over the place.
I don't understand why Porsche wouldn't try to make a simple 2 stroke engine. You just have to stop the oil mixing with the intake air, and it should be good
"You can't make an uneven cylinder count V engine!" Wait, the VR5 exists. Now i want a VR9. Thank you for this wonderful thought. Or a VR15 or VR18 for Bugatti or Rolls Royce.
Why patent it now? We were discussing that at work on Friday and came to the conclusion that maybe someone finally finished their PhD thesis that they started like 10 years ago. It's not unlikely. xD
At 15:46 minutes you were talking about "some sort of valve" as though something would need to be invented but it already has, the Sleeve Valve. Used in aero engines in WW2 (Bristal Hercules, Napier Saber) and some British cars (there maybe others).
The DJ loop caught me off the guard. Small things like this make you one of the best car youtubers imo. Actually, in general, you've been a major factor in me becoming interested in cars so thank you for that. :)
At 15:18 Wrong: the top of the piston travels down to just uncover the holes at the bottom. In this drawing, the stroke is drawn too big. The piston height must be equal to the stroke.
I'll just call em what Clarkson does, a beetle. Well this tech sounds great on paper but as the Germans have shown us over n over more complex isn't always or rarely more reliable or remotely reliable. From what I've seen German cars are high tech high maintenance nightmares, BMW are the kings of electromechanical fails. You gotta be a fanboy to put up with the 🤯 that comes with most German vehicles. And my last name is waltz formerly woltz..
Absolutely agree with the pros and cons of the engine - relatively simple and easy to build and fit in a future 911, but the balancing problem is there. I am not into Porsches, especially 911s (probably because the main thing for the every new 911 is - how much Porsche can change it without changing it), but the patent looks like it's absolutely feasible and can be executed.
If you only have efficiency gains at high load then this is the least useful upgrade versus hybrid power. Hybrid assist allows you to generate high torque for acceleration without using high boost pressure, thus the rich fuel mixture is avoided and a hybrid engine already doesn't have the problems that the six stroke aims to solve. Basically this is just an elaborate way to lower emissions on performance cars without using a hybrid drivetrain, which is an admirable goal since this should have lower long term maintenance cost, but the added up front cost means this engine will probably never be deployed in passenger cars.
pointless overcomplicated cuckoo-clock that will cost a fortune when it inevitably fails. what we need is gas and deisel electrics - a small gas/diesel engine that runs a generator to power electric motors that actually move the car.
I believe, if I'm not mistaken perhaps I may be. I think, I've seen somewhere Porsche are trying to make alternative fuels. So here's hoping, for the good people and proper enthusiasts.
Your videos and descriptions are one of the few things I can understand in life and its stimulating. I feel like Im doing something productive when I watch your videos. Love your content!
Trust the germans to come up with this, I could only imagine trying to assemble and time this engine. Those people thinking EV's are the answer have to come back to earth and face reality 🤣
The main issue I see with this design is the wear on the crankshaft gears. Everything else is kinda fixable, you could have another either electric or camshaft actuated intake valve before the bdc2 intake holes to prevent the need for the piston to be half the length of the zylinder, you could run different intake pressures to precisely measure how much air would get replaced during scavenging, so for example run a turbo for the main intake system and a compressor for the bdc2 intake system. But I really can't think of any material that can withstand the forces transferred on these gears at a few thousand rpms realiably over a longer period of time. Plus, the wear of these gears ends up directly in the oil, plus, to service them you have to replace the entire bottom of the engine, the crankshaft itself, all the additional parts like connecting rod bearings etc...
there's other problems like you need to have forced induction anyway so that the exhaust doesn't exit through the extra intake ports - or vacuum at the exhaust side, it doesn't just happen automatically. the benefits are largely unproven as well and sound quite sketch for efficiency, everything would need to make up for the losses in the gears. the "more power" is kinda irrelevant without anything actually to back it up and like said it needs forced induction anyway (at all rpm's not just at low like d4a says, they become the exhaust ports of a 2 stroke engine at the bottom if there is no positive pressure higher than the crankcase pressure)
@@rewanker7336 I have someone in my country that explains from head to toe about any cars but I will love to see driving for answers do it especially the 2.0 engine it sounds like a 4age and that's why Iove it no to mention if you have a Dacia Logan 1.6 you can swapped for a 2.0 f type Renault engine because all of the engine started with K series
It should more or less balance out for 3 cylinders, not unlike 3-phase electricity. However, it would balance still better for 3 pairs of cylinders, which you mentioned :) Two question, though: first, you modeled the 180° offset. In 4-stroke design it's the only one. However, in 6-stroke you can also consider a 540° offset. Would it balance better or worse? Second is not as much a question as a vague concern. The five-lobe structure of this hypocycloid is bugging me, telling that there should be something going on with five-way division. Any thoughts on this?
Maybe something interesting for you . Look up Ryger kart engine , it’s a 2 stroke with moving ports. I race karts and everyone talked about it , some tested the engine in kinda secret . RyGer claimed 70 hp ! Out of a 125cc ( normal Kz 41-45hp) to bad the people who tested it said it had many issues and was unreliable, hence why no one uses it
Seems this design was done by mechanical specialists not by alternation of load guys. The design parameters to adjust the 3rd and 4th stroke-scavenging are the exenter, the liner scavenging cross section, bore size and maybe some sophisticated kinematic lengthening the 2nd BDC duration (not added to the patent yet). At BDC on full load one can still expect 3-15 bar of exhaust gas pressure, the time to release it by the exhaust valve a part of it, which is high enough that the scavenging can act on boost pressure level depends not only on the alternation of load setup, the turbine and compressor map matching but also on engine speed and load. These are the chains around the combustion process design, to get the scavenging done. It's very likely there will be an additional demand for intake boost for a wider range of engine speed and load. For an daily driver you can thing of an mechanical compressor, or you need a high voltage battery driven compressor to feed just the demanded energy in it. This 6-stroke-engine my work for single operation point applications like combined heat and power (generator, one speed, one load point) or range extender (one speed and some load variaty), but the challenge to get it done for an full mobile application is costly and the result is likely more inefficient then a 4-stroke-contender. A Porsche application, if they don't jump into the CHP business, may be a range extender system to hybridize a BEV applicaion. I have my doubts we will see Euro 7 matching 6-stroke-engines from Porsche. By the way, in Germany we don't shorten or bend the Sir name, we may shorten the name. That's why Ferndinand Prosche may got called Ferdl, but not Porsch. You may call it Porsch and everyone understand it in the english speaken areas, but it's disgusting for me to bend someones Sir name like you like it best. The name of the Company is Porsche. No bending, no shortening, no trivialization, it's only Porsche. I work on Porsche race engines from 60'ies to 80'ies, from B6's to V16's, from 2 Liter to almost 7 Liter, these are amazingly engineered 4-stroke-derivates, very robust, quite innovative for their time and dominating in performance and endurability almost all racing classes. I appreciate that and take my hat off for these engineers and mechanics running these to great success and today's position of Porsche, they never would had if Motorsport's would not have that successfully. Motorsport was Ferdinand Porsche's main driver for the engineering, innovation and performance of his products, since his first engine/car. If you honor that, call it Porsche, if not, call it what ever you call it.
I love this concept and how they're pushing ICE. I wonder how oil blow by and consumption is going to be with this design. Wouldn't the ports at the bottom of the cylinder allow oil to get into the combustion chamber? They've obviously thought about this, but I'm curious about their solution for it. Either an extra set of valves and an acceptable amount of oil burn, or some wild piston rings that do something tricky when going past the ports. Cool Stuff.
Aren't those scavenging intake port holes a big issue cuz oil will get into them and into the combustion chamber, so oil burning engine. Don't they also block the cylinder coolant jackets, or maybe they're placed right below them or have passages down between the holes.
