godlameroso wrote: ↑04 Apr 2017, 22:15
JuanjoTS wrote: ↑04 Apr 2017, 21:53
But ... what about the harmonics?
What about them? It's true that you can generate vortex rings with harmonic resonance.
https://youtu.be/PoEyIJx3uM0?t=3m31s
If you think of the pre-chamber as the little christmas ornaments in this video, you can see that if the main chamber sound frequency, or exhaust frequency resonates with the pre-chamber it could disrupt flame propagation from the pre-chamber.
That is why I'm thinking that it may be a good idea to vary the pre chamber dimensions so that the resonance in the pre-chamber is not tuned to the resonance in the exhaust, or if the inverse is true and resonance improves mixing varying the pre-chamber volume so that the frequency is tuned to the exhaust pulse to improve mixing.
The goal being to avoid the instability of the mixture caused by resonance, so that ignition timing can be set more aggressively, and likewise use a more lean mixture.
The Honda engine problem is the lack of rigidity of its elements, the solution you propose is excessively complicated. The Japanese are extreme, they are white or black, take their concepts too far, less weight is good, but if you add ballast to meet the legal minimum and also produces vibrations seems a pointless concept.
Must find the exact midpoint (gray) between stiffness and weight loss.
The Honda problem is not the inability to inject what they want to each cylinder, use an explosion to push and another to compensate for the created vibrations.
Let's say Honda is running 4.5-cylinder (not bad performance considering this).
The provisional solution that Honda gave in Melbourne was to increase the speed of revolutions to eliminate the greatest possible vibrations, this takes the motor of the ideal torque point and increases the consumption having to save fuel with loss of more power.
In my opinion, the simplest thing is to increase the rigidity of the elements, although this increases the weight of the engine.
They are good news, they are not irreparable errors nor do I think they need 4 races to correct it. They should not be waiting to meet the limit of engines, no matter the penalties, it is important to create the base of the car that will win the 2018-2019 World Cup.
Between the engine at the out-of-par point, fuel savings and having to use cylinders to compensate for vibrations rather than to push, not being able to regenerate enough energy, I think the Honda engine was working at 60% of its potential.
To be more precise, let's take into account that the increased stiffness-weight reduces its ideal potential by 10%, we will say that the Honda engine worked at 70% of its potential.
In this era of F1 so complicated also there is the differential between power to a lap and the power in each lap of a GP. and The Honda engine is more hurt in the race than in a qualifying lap.
Solutions 90% of the time are the simplest, but we tend to eliminate options from the most complicated to the simplest, it is a mistake that we humans make.
