it doesn't 'need power' to harvest/recoversaviour stivala wrote: ↑21 Jun 2023, 13:23... the MGU-H, which when switched into recovery itself needs power so as to harvest/recover....
The throttle isn't entirely closed when the throttle isn't pressed. If it was, the engine would stall for a lack of any oxygen to burn. Thus, cold pumping still happens.saviour stivala wrote: ↑21 Jun 2023, 13:23When the driver goes off-the-throttle-pedal the engine throttles are closed, as soon as the throttles to each cylinder are closed the pistons inside those cylinders cannot pump anything out of the exhaust valve as they cannot breathe any air. When pistons cannot breathe any air, and have nothing to push into the turbine, the turbine is as good as useless in regards powering/rotating the MGU-H, which when switched into recovery itself needs power so as to harvest/recover. It will be acting like a brake with the turbine having no power to overtake that brake effect.
Not only are the ICE throttles closed when driver goes off-throttle, but also fuel is cut-off to engine. The engine will not stall even if driver does not go back on throttle as engine mapping will retain engine at idle speed when RPM drops down to idle RPM.Just_a_fan wrote: ↑21 Jun 2023, 15:18The throttle isn't entirely closed when the throttle isn't pressed. If it was, the engine would stall for a lack of any oxygen to burn. Thus, cold pumping still happens.saviour stivala wrote: ↑21 Jun 2023, 13:23When the driver goes off-the-throttle-pedal the engine throttles are closed, as soon as the throttles to each cylinder are closed the pistons inside those cylinders cannot pump anything out of the exhaust valve as they cannot breathe any air. When pistons cannot breathe any air, and have nothing to push into the turbine, the turbine is as good as useless in regards powering/rotating the MGU-H, which when switched into recovery itself needs power so as to harvest/recover. It will be acting like a brake with the turbine having no power to overtake that brake effect.
Nugnes said Ferrari will bring a new floor to Austria and they will increase development pace until Belgium.Mr.S wrote: ↑21 Jun 2023, 19:08Great job, upgrades have worked. But Mercedes & Ferrari have made a big jump too & have similar pace. Apparently Mercedes have a big upgrade package for Silverstone, possibly Ferrari too.
Let's hope the Britain upgrade is a big one & worth 2-3 tenths+ because they will need it. Good thing is gap to RB was non-existent/1 tenth odd in Canada. Maybe in Austria or Silverstone will be 2-3 tenths off, but the 5-7 tenths gap is gone. Now RB could bring upgrades & could move up & so could Ferrari/Mercedes so Britain package would be key. I am assuming Austria Dry Running will help Aston optimize the package further interms of setup.
The comments from AMUS look positive & Alonso was very over-confident "Crush them", "No race without podium" etc. That can only happen if Aston has the pace to match RB otherwise Alonso looks like a fool making those predictions. So, I assume their sim data, optimizing set-up & Silverstone upgrades give them a lot of confidence. Hungary/Singapore could be good circuits for a win if Aston can keep the gap to 1-2-3 tenths on an average to RB !
You mean valves to each cylinder?saviour stivala wrote: ↑21 Jun 2023, 13:23When the driver goes off-the-throttle-pedal the engine throttles are closed, as soon as the throttles to each cylinder are closed the pistons inside those cylinders cannot pump anything out of the exhaust valve as they cannot breathe any air. When pistons cannot breathe any air, and have nothing to push into the turbine, the turbine is as good as useless in regards powering/rotating the MGU-H, which when switched into recovery itself needs power so as to harvest/recover. It will be acting like a brake with the turbine having no power to overtake that brake effect.
I'm curious about the high speed corners as well. Fundamentally I don't understand why the car previously has struggled in them.Bisonas wrote: ↑22 Jun 2023, 00:24IMO in Austria AMR on paper will a have a strong S1, while S2 and S3 will show us how the upgrades actually affected some of the cars previous (let's say) weaknesses.
If S2 is really strong and close to RBR and Mercedes , updates are working like a charm. If S3 is also strong and close to RBR then don't wake me up. Let me live the dream..
If you mean 'engine intake/exhaust valves' no. When the throttle "buterfly valve" which is the final intake to cylinder is closed, that cylinder cannot pump anything out of it. No breathing no pumping. No pumping into turbine, turbine is as good as useless. Also, the sudden build-up of compressor pressure when driver goes off-throttle cannot get inside cylinders when cylinder throttle is closed.diffuser wrote: ↑22 Jun 2023, 01:41You mean valves to each cylinder?saviour stivala wrote: ↑21 Jun 2023, 13:23When the driver goes off-the-throttle-pedal the engine throttles are closed, as soon as the throttles to each cylinder are closed the pistons inside those cylinders cannot pump anything out of the exhaust valve as they cannot breathe any air. When pistons cannot breathe any air, and have nothing to push into the turbine, the turbine is as good as useless in regards powering/rotating the MGU-H, which when switched into recovery itself needs power so as to harvest/recover. It will be acting like a brake with the turbine having no power to overtake that brake effect.
I think their rear end aero was just weak in yaw condition. They seemed to have fixed a good bit of that in Canada.AR3-GP wrote: ↑22 Jun 2023, 01:43I'm curious about the high speed corners as well. Fundamentally I don't understand why the car previously has struggled in them.Bisonas wrote: ↑22 Jun 2023, 00:24IMO in Austria AMR on paper will a have a strong S1, while S2 and S3 will show us how the upgrades actually affected some of the cars previous (let's say) weaknesses.
If S2 is really strong and close to RBR and Mercedes , updates are working like a charm. If S3 is also strong and close to RBR then don't wake me up. Let me live the dream..
Yes, i do agree that there where probably some weakness in yaw condition along with some general aero efficiency shortcomings (compared to RBR) of the old package. That's why IMO S2 and S3 in Austria will give us a better picture (with more time to analyze data from Canada and fine tune the upgrades) of the progress on both yaw behavior and overall aero efficiency.Zynerji wrote: ↑22 Jun 2023, 06:07I think their rear end aero was just weak in yaw condition. They seemed to have fixed a good bit of that in Canada.AR3-GP wrote: ↑22 Jun 2023, 01:43I'm curious about the high speed corners as well. Fundamentally I don't understand why the car previously has struggled in them.Bisonas wrote: ↑22 Jun 2023, 00:24IMO in Austria AMR on paper will a have a strong S1, while S2 and S3 will show us how the upgrades actually affected some of the cars previous (let's say) weaknesses.
If S2 is really strong and close to RBR and Mercedes , updates are working like a charm. If S3 is also strong and close to RBR then don't wake me up. Let me live the dream..