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Porsche's idea for a six-stroke internal combustion engine

motor1.com

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Re: Porsche's idea for a six-stroke internal combustion engine

#101

Post by foobazgt »

prds_lost wrote: post #53
cbeach wrote: post #29

Earlier quoted context omitted.

> performance cars should have ICEs After driving a fast Tesla, stepping into an ICE performance car feels like going back to a steam engine. A very slow, unresponsive steam engine. When avid petrolheads try a fast EV and feel the instant torque it will be an epiphany for them. Only the most stubborn will stick with fossil cars.

Which ICE performance car? I went from an SRT8 back in 2012 to a Tesla Model 3 performance + mods and now most recently went back to ICE via an AMG GT63. I can confidently say that the GT63 is leagues more fun than the Tesla ever was. Sure the Tesla was quick off the line, but outside of that it felt sterile and the ride was quite uninspired.

Model 3's didn't exist in 2012. Did you mean something else? I've driven an M3P for 5 years, and I wouldn't call it sterile.

I haven't been cross shopping it with vehicles that cost 3x as much and get only 15% of the mileage, so maybe I'm missing something? But weighing 10% more and taking 20% longer to reach 60 doesn't seem particularly compelling.

Re: Porsche's idea for a six-stroke internal combustion engine

#103

Post by nikanj »

teo_zero wrote: post #51

But isn't the chamber full of exhaust at the beginning of the second power stroke? What will burn?

You can overfill the cylinder for the first stroke, because the unspent fuel will burn on the next cycle instead of being exhausted.

High power engines exhaust a lot of unburned fuel, because you can't guarantee an exact 100% fill for the cylinder, and there's more power to be had at 120% fill than 80% fill. Oversimplified of course.

Re: Porsche's idea for a six-stroke internal combustion engine

#104

Post by jbgt »

Szpadel wrote: post #65
ttwwmm wrote: post #2

[flagged]

I think many of people here live in US and assume that it everywhere things look similar. in my European country electric infrastructure is not ready for electric cars and with current energy prices this makes no financial sense. I own plug in hybrid and I live in apartment meaning I have no possibility to charge at home. near me (about 10 min of walking there is public single phase allow charger with 2 plugs machine…

If I may disagree: I live in a flat with a fully electric vehicle. It's just a matter of planning around charging a bit. Once you think ahead (and it's not dramatic), you don't notice anymore.

I find plug in hybrids make no sense: electrification is the future.

Re: Porsche's idea for a six-stroke internal combustion engine

#105

Post by jabl »

lostlogin wrote: post #71
JumpCrisscross wrote: post #16

Earlier quoted context omitted.

> Why waste R&D on a dead end? "There were an estimated 20 million horses in March 1915 in the United States" [1]. In 2023? Almost 7 million. Internal combustion engines will be around for a long time, in part because they're beautiful. [1] https://en.wikipedia.org/wiki/Horses_in_the_United_States#St... [2] https://www.ppfas.com/pdf-docs/b-finance/cigar-butt.pdf

Something that surprised me: the German army in WW2 was mainly horse drawn. According to the below link, 80% of its transport was via horse. https://www.zdnet.com/article/the-wwii-german-army-was-80-ho...

Reflecting the interwar German society more broadly; agricultural mechanization was decades behind the US and UK.

The industrial and economic "miracle" of the pre war Nazi regime wasn't spent on tractors either, but on weapons.

Re: Porsche's idea for a six-stroke internal combustion engine

#107

Post by mgkimsal »

jbgt wrote: post #104
Szpadel wrote: post #65

Earlier quoted context omitted.

I think many of people here live in US and assume that it everywhere things look similar. in my European country electric infrastructure is not ready for electric cars and with current energy prices this makes no financial sense. I own plug in hybrid and I live in apartment meaning I have no possibility to charge at home. near me (about 10 min of walking there is public single phase allow charger with 2 plugs machine…

If I may disagree: I live in a flat with a fully electric vehicle. It's just a matter of planning around charging a bit. Once you think ahead (and it's not dramatic), you don't notice anymore. I find plug in hybrids make no sense: electrification is the future.

> I find plug in hybrids make no sense: electrification is the future.

They make sense depending on how far away that future is, and I think that 'future' is way different for different parts of the world.

Re: Porsche's idea for a six-stroke internal combustion engine

#108

Post by chii »

arresin wrote: post #100
chii wrote: post #93

Earlier quoted context omitted.

Why should something be heavily vilified and taxed simply because you personally dislike it?

Because it’s a dead-end tech that’s holding us back and destroying the place where we all live. If you insist on pursuing it for your own pleasure, knowing what we all know now, you may be a villain.

but the grandparent poster's problem isn't with ICE itself, but with "emotion, driving as an experience" etc.

In other words, the grandparent poster's argument is merely that people shouldn't be basing decisions on their (flawed) emotional attachment to driving as an experience, and would like such to be shamed and vilified.

This is a moralistic argument. It has nothing to do with environmentalism, but is using climate change as a platform to push a personal agenda or world view. In other words, it's a woke argument.

Re: Porsche's idea for a six-stroke internal combustion engine

#109

Post by LightBug1 »

arresin wrote: post #98
Szpadel wrote: post #65

Earlier quoted context omitted.

I think many of people here live in US and assume that it everywhere things look similar. in my European country electric infrastructure is not ready for electric cars and with current energy prices this makes no financial sense. I own plug in hybrid and I live in apartment meaning I have no possibility to charge at home. near me (about 10 min of walking there is public single phase allow charger with 2 plugs machine…

So spend on that infrastructure instead, or mandate it. Honestly, spending resources on anything ICEs (outside of special industries) in this day and age is just wrong.

They're called sports cars for a reason. They're driven far less than everyday cars. They're fantastic fun.

I'm an enviromentalist and I'd still buy an ICE Porsche.

No EV has come close ... only the Hyundai ioniq 5 N seems to be looking interesting.

Re: Porsche's idea for a six-stroke internal combustion engine

#110

Post by tonyedgecombe »

LightBug1 wrote: post #109
arresin wrote: post #98

Earlier quoted context omitted.

So spend on that infrastructure instead, or mandate it. Honestly, spending resources on anything ICEs (outside of special industries) in this day and age is just wrong.

They're called sports cars for a reason. They're driven far less than everyday cars. They're fantastic fun. I'm an enviromentalist and I'd still buy an ICE Porsche. No EV has come close ... only the Hyundai ioniq 5 N seems to be looking interesting.

>I'm an enviromentalist and I'd still buy an ICE Porsche.

Environmentalists walk or ride bikes.

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