This could be a good idea.
Honda and the rest will need to change back from mechanical valvesprings to pneumatic valves, but that is not a big problem. All the manufacturers have the expertise to reinstate pneumatic valvetrains quickly and easily.
This could be a good idea.
friction is largely 'side force' friction - this is related to piston acceleration and to combustion (and compression) loads
You also need to consider displacement - 3 litre engine will have almost double the frictional loss of a 1.6 litre with similar cylinder size and operating speed.Tommy Cookers wrote: ↑28 Apr 2019, 14:11friction is largely 'side force' friction - this is related to piston acceleration and to combustion (and compression) loads
with NA F1 piston acceleration was dominant and combustion etc loads helped to reduce friction
with Hybrid F1 combustion (even compression) loads are dominant and piston acceleration helps to reduce friction
(one reason why running at 10500 is quite good)
as Hybrid F1 stroke is much longer than NA F1's their piston accelerations and velocities aren't hugely different
I dont think friction is a big issue for manufacturers, but RPM is a big issue as you need insanely fast injector that is capable to provide stratified injection at very high RPM, not to mention there is no beneficial to achive that coz there is no road relevance for it. Atm, this is the best relevancy to road going engine as they can develop hybrid, battery, combustion concept, turbine material at the same time without limitations.
The ring design can be adjusted to suit the cylinder pressures anticipated. There are two main variables:
Why not bump the engines from a 1.6L V6 to a 2.1L V8 while they are at it? [V8, single-turbo, sound familiar? ]
V8 twin-turbo without MGUH would sound even better than V8 single-turbo with MGUH.
It's an entertainment spectacle, so they may well do so. The V6 hybrids already had pneumatic valves at the start, it was only changed to valvesprings when the low rpm operation was realised by the designers.
I hear ring-gap is critical in boosting a high (9.5+:1) compression engine. Can you give any opinion on this?