Engine animation..... pretty cool.

[DGthe3]

Originally Posted by jdenotter

Its funny how people nowadays think VVT is so new and cool. In all reality honda has been doing variable timing since the early 90s. So when I see a company talk about VVT im not impressed.
Sent from my DROIDX using Tapatalk

The concept of VVT dates back to steam engines, was used in aircraft in the 1920's and its been in cars for about 30 years. Honda's v-tech is a lot like Ford's Ecoboost in so much as they both have a catchy name and people forget that other manufacturers did the same thing earlier.

On a barely related tech-fascination/history note ... I find it funny when people talk about OHV engines as being old, implying that OHC is somehow new. They're both roughly a century old, with OHV being maybe a decade older than OHC.

[PQ]

Originally Posted by DGthe3

The concept of VVT dates back to steam engines, was used in aircraft in the 1920's and its been in cars for about 30 years. Honda's v-tech is a lot like Ford's Ecoboost in so much as they both have a catchy name and people forget that other manufacturers did the same thing earlier.

On a barely related tech-fascination/history note ... I find it funny when people talk about OHV engines as being old, implying that OHC is somehow new. They're both roughly a century old, with OHV being maybe a decade older than OHC.

And then they call the pushrod outdated.

[danhr]

WTF

why are you posting ford motors on a camaro site?!

[PQ]

Originally Posted by danhr

WTF

why are you posting ford motors on a camaro site?!

I tried finding an LS3 one. There are none.

Just an illustration on how it all works.

The one illustration I think is a Honda. lol VVT.

[radz28]

Originally Posted by hypurone

Well, the rotor themselves would be "considered" the "pistons as it were". The housings are the combustion "chambers". And to really twist your brain, the path that the rotors travel is "epitrochoidal".

WTF did you just post? LOL!!! Yeah - well - I'm a dodecahedron (HTF is that spelled?...)

Originally Posted by DGthe3

Each rotor is akin to 3 cylinders (well, pistons if you want to be picky). But since it completes the equivalent to a 4 stroke cycle (suck, squeeze, bang, blow) it will fire 3 times each cycle, which is the same as what a 6 cylinder engine does.

Is that why, until the last RX8, those engines were considered too inefficient, then, because they are really almost three-cylinder engines per rotor? Sh*t - here comes that headache again

Originally Posted by PQ

I tried finding an LS3 one. There are none.

Just an illustration on how it all works.

The one illustration I think is a Honda. lol VVT.

I really think these are great animations. I couldn't wrap my mind around how a rotary works, and I'm closer than I have ever been now, so thanks

[Capthowdy]

those injectors looked to be a bit early...

[DGthe3]

Originally Posted by radz28

Is that why, until the last RX8, those engines were considered too inefficient, then, because they are really almost three-cylinder engines per rotor? Sh*t - here comes that headache again

Rotors make my head spin, so I can't even begin to explain. I think its related to the valving, or maybe how the compression stroke works, or it could be something else entirely. But suffice to say, its more complicated than how a 3 sided rotor does 4 things at once.

[hypurone]

Originally Posted by radz28

WTF did you just post? LOL!!! Yeah - well - I'm a dodecahedron (HTF is that spelled?...) Told ya!



Is that why, until the last RX8, those engines were considered too inefficient, then, because they are really almost three-cylinder engines per rotor? Sh*t - here comes that headache again No, they are not thermally efficient which is what hurts the fuel mileage. This means they tend to lose thermal expansion during the power stroke and is why there are 2 plugs per chamber (to ignite the mix about 20 degrees apart). Everyone tried to label them 6-cyl's to make them race in higher HP classes cuz they were kicking everyone's ass elsewhere... When that failed, they handicapped them with more and more weight til they couldn't compete...



I really think these are great animations. I couldn't wrap my mind around how a rotary works, and I'm closer than I have ever been now, so thanks

[CatiaJockey]

Nice.... thanks PQ!

[blackknight]

subd so i can watch it after work.