Oh yes, the insanity of the new F1 power units! The goal was 50/50 Electric/ICE split... but why go hybrid when the cars use fully synthetic fuel and have essentially no runtime carbon footprint? Well for car makers to signal their virtue of course! Did they worry about the mega tons of goods they ship around the globe to race in 24 different countries... or perhaps the armada of VIP private planes that follow... or the 1M fans that drive to each venue?
Ok, so hybrid... but where will the E energy come from? Clearly from the brakes, the rear brakes... the same ones that get only a fraction of the braking energy because all the forces move to the front under deceleration. Where is the energy stored, in the battery of course... which is so small it runs out halfway down a single straight. So you basically have a big complicated heavy car with half the power it should...
And naturally you have lots of software controlling "deployment" of your meager E reserves. It even guesses where you are on track based on time/speed, because GPS is illegal for that. Sigh...
To be clear... I am not arguing ICE is good or E is bad. Just that F1's current specs for the ICE/E mixture is horrible.
F1 is a constructors championship, and the constructors are interested in developing electric power trains. Nobody wants to spend 100 million to tweak the last 0.1% performance out of a turbo-charged V8.
Quite right, on the constructor part... that is very much the appeal for us techies. But they do spend 100 million tweaking the last 0.1% of aero advantage and tire-deg management. a) They could just homologate a common engine, like in F2 and concentrate on the chassis or b) make a properly designed hybrid PU. By (b) I mean have an E component that gets adequately charged... the MGU-H (E-Turbo) of the last generation seemed to work fine. The current specs is nuts, definitely NOT advancing technology.
Banning teams like Ferrari or Mercedes from competing with their own cars (including the engines) would be the end of F1. The current regulations are extremely ambitious such that constructors can get a significant advantage from developing better tech. And it's working, the Mercedes powertrain is clearly dominating, even though the Ford V8 is more powerful.
My understanding is that the switch to hybrid was to get rid of needing to refuel during a race, since that is dangerous. The 50/50 split is new this year, but they're already working on fixing that for next year. But even then, they had to reduced the number of laps because otherwise they would need to re-engineer the entire car to allow more fuel.
Because electric engines are more performant than gas ones so you can in theory have better driving perfomrance? I.e., high, flat and predictable torque curve, re-use braking energy (so it adds up to ICE), extremely high energy density of the engine unit.
All that, yes. But they don't work too well if the battery runs out halfway down the straight... and there is too little charging.
I wasn't politicizing E vs ICE... but commenting on the particular specifications these rules mandate for F1. Specifications that are not fit for purpose.
There's no reason the battery should run out on the straight, though. You can charge at any point while driving, not just during braking. Obviously you're taking torque from the engine to do so, but that's a strategic consideration.
> Obviously you're taking torque from the engine to do so, but that's a strategic consideration.
but drivers dislike do not being in control the harvesting and deployment (which apparently would be too complex to be manual), while fans dislike cars clipping out on straights.
Regenerative brakes (maybe even on front wheels!) would be great, but they are not enough to charge the battery given the current split. MGU-H was also a great invention, but was phased out apparently for complexity.
Next year the power output split will be tweaked to make clipping less extreme, but won't solve allt he issues.
Regeneration happens directly on the crankshaft via the mgu-k, not the wheels. The mgu is essentially a governor, so you can set it to add or sink (absorb) torque however you like. If you're adding torque, you're draining the battery, and if you're sinking torque, you're charging the battery. Because everything is mechanically connected, sinking torque also wants to brake the car (i.e. regenerative braking).
In terms of power balance, on average, the draw needs to match generation for the system to work. Since this a race, the battery should be flat when you cross the finish line, because you don't want to leave power on the table. When cars are clipping out on the straights, they're trying to claw back some power for the battery so they can deploy it at a more impactful moment in the race. Maybe it's frustrating for viewers, but part of that is that the vehicle has a maximum sustained power, and a maximum total power, and those aren't the same thing.
The mgu-h was cool, but I believe the teams when they say that it was too difficult and too expensive to get right.
It’s not virtue signaling. It’s research. Pushing the limits of hybrids has downstream benefits for consumer cars, presumably.
I agree the current design is pretty dim-witted. But I think the high-level goals are sensible. It’s certainly more than just appealing to the green crowd, because that obviously is misplaced for this audience.
Ok, so hybrid... but where will the E energy come from? Clearly from the brakes, the rear brakes... the same ones that get only a fraction of the braking energy because all the forces move to the front under deceleration. Where is the energy stored, in the battery of course... which is so small it runs out halfway down a single straight. So you basically have a big complicated heavy car with half the power it should...
And naturally you have lots of software controlling "deployment" of your meager E reserves. It even guesses where you are on track based on time/speed, because GPS is illegal for that. Sigh...
To be clear... I am not arguing ICE is good or E is bad. Just that F1's current specs for the ICE/E mixture is horrible.