100%
Can I read about these proven butterflies somewhere?Zynerji wrote: ↑Tue Oct 08, 2019 11:37 pmIt is proven that the "butterflies" exist as I've described. They look like an oddly formed cam shaft, so 3 cylinders operated per shaft.gruntguru wrote: ↑Tue Oct 08, 2019 11:21 pmAgree with @mudflap. Highly unlikely (and probably illegal) to operate butterflies at valve train frequency. You would be talking six actuators operating at very high speed. It is hard enough to get the intake valves to operate at these speeds - butterflies as well???
Using Miller cycle to help homogenise main-chamber mix - quite possible - interesting idea.
On definitions Atkinson cycle describes the general family of engines with CR<ER including those using weird mechanisms. (eg https://www.youtube.com/watch?v=CNsJOsnuIMA)
Miller cycle is a subset of these using valve timing to reduce CR without affecting ER.
At this point, how is there still an argument? It would only make sense that it would operate at valve train speeds as synchronization would obviously be required.
I made a post with the article about the Honda Cackle engine sound. Search it up.hurril wrote: ↑Wed Oct 09, 2019 7:04 amCan I read about these proven butterflies somewhere?Zynerji wrote: ↑Tue Oct 08, 2019 11:37 pmIt is proven that the "butterflies" exist as I've described. They look like an oddly formed cam shaft, so 3 cylinders operated per shaft.gruntguru wrote: ↑Tue Oct 08, 2019 11:21 pmAgree with @mudflap. Highly unlikely (and probably illegal) to operate butterflies at valve train frequency. You would be talking six actuators operating at very high speed. It is hard enough to get the intake valves to operate at these speeds - butterflies as well???
Using Miller cycle to help homogenise main-chamber mix - quite possible - interesting idea.
On definitions Atkinson cycle describes the general family of engines with CR<ER including those using weird mechanisms. (eg https://www.youtube.com/watch?v=CNsJOsnuIMA)
Miller cycle is a subset of these using valve timing to reduce CR without affecting ER.
At this point, how is there still an argument? It would only make sense that it would operate at valve train speeds as synchronization would obviously be required.
I can only find claims by you based on bad assumptions on what the/a VLIM is and what a butterfly valve is. Do you have a source for your claims?Zynerji wrote: ↑Mon Oct 14, 2019 11:23 pmI made a post with the article about the Honda Cackle engine sound. Search it up.hurril wrote: ↑Wed Oct 09, 2019 7:04 amCan I read about these proven butterflies somewhere?Zynerji wrote: ↑Tue Oct 08, 2019 11:37 pm
It is proven that the "butterflies" exist as I've described. They look like an oddly formed cam shaft, so 3 cylinders operated per shaft.
At this point, how is there still an argument? It would only make sense that it would operate at valve train speeds as synchronization would obviously be required.
I see. IIRC, there were pictures, and even someone that had built one like I described, and said it had a positive effect.
No I was not but now I know your role.Zynerji wrote: ↑Mon Oct 14, 2019 11:46 pmI see. IIRC, there were pictures, and even someone that had built one like I described, and said it had a positive effect.
I don't have time nor inclination to go find it, but I'm guessing you were one of the vocal detractors that provided no counter evidence?
You only know what you are shown.hurril wrote: ↑Tue Oct 15, 2019 8:43 amNo I was not but now I know your role.Zynerji wrote: ↑Mon Oct 14, 2019 11:46 pmI see. IIRC, there were pictures, and even someone that had built one like I described, and said it had a positive effect.
I don't have time nor inclination to go find it, but I'm guessing you were one of the vocal detractors that provided no counter evidence?
I have no beef with you and I don't want one. I just wanted to read the proof that you had.Zynerji wrote: ↑Tue Oct 15, 2019 2:42 pmYou only know what you are shown.hurril wrote: ↑Tue Oct 15, 2019 8:43 amNo I was not but now I know your role.Zynerji wrote: ↑Mon Oct 14, 2019 11:46 pm
I see. IIRC, there were pictures, and even someone that had built one like I described, and said it had a positive effect.
I don't have time nor inclination to go find it, but I'm guessing you were one of the vocal detractors that provided no counter evidence?
"All you know about me is what I've sold you
Dumb ---
I sold out long before you ever heard my name
I sold my soul to make a record
Dip ---
And you bought one"
Pumping losses would be relatively easy to minimize, they run individual throttle bodies so just keep the two deactivated throttles fully open.Mudflap wrote: ↑Thu Nov 07, 2019 4:19 pmIf you could remove the pumping and frictional losses associated with the extra 2 cylinders that don't do anything and provided that your working 4 cylinders could cope with the increased thermal and mechanical loads associated with operating at higher duty then yes, there could be a thermal efficiency gain.
Lower heat losses from smaller effective combustions surface.Holm86 wrote: ↑Thu Nov 07, 2019 7:58 pmPumping losses would be relatively easy to minimize, they run individual throttle bodies so just keep the two deactivated throttles fully open.Mudflap wrote: ↑Thu Nov 07, 2019 4:19 pmIf you could remove the pumping and frictional losses associated with the extra 2 cylinders that don't do anything and provided that your working 4 cylinders could cope with the increased thermal and mechanical loads associated with operating at higher duty then yes, there could be a thermal efficiency gain.
But what would the advantage be??