Team: Christian Horner (TP), Adrian Newey (CTO), Peter Prodromou (HA), Rob Marshall (CD)
Drivers: Sebastian Vettel (5), Mark Webber (6)
Having been involved with programable ECUs in a dyno room environment, I find this to be very unlikely.Jersey Tom wrote:It would be awfully easy for the ECU to just cut fuel to the one cylinder if it noticed said plug to be faulty.. without changing the mix to the other cylinders.
Perhaps he also turned off or failed to 'lock' the ride height system and it defaulted to maximum height?tok-tokkie wrote:I read that Vettel stopped the car purposely as soon as possible to avoid any possible additional engine damage because of the engine limit this year. It was not because he ran out of fuel just after the finishing line.
What Hamilton is reported to have said is surprising (in the sense that one design can be so much more effective than the rest).
I think you will find that the rpm decreased after the problem. No doubt the fuel mixture was changed and the driver avoided the rpm where the problem showed itself. That is why the engine sounded much the same. I doubt the plug had totaly failed, they rarely do.timbo wrote:There's a new version speculated -- that Vettel run out of fuel.
Pros -- it explains why on onboards from the final part of the race engine sound was the same as earlier. It should've changed if only 7 cylinders were firing?
Cons -- we heard Vettel on the radio "I'm loosing power, I'm loosing power" and why hide fuel consumption problem?
As I mentioned in my last post, I very much doubt it was a 'complete' plug failure, this rarely happens even on race engines.marcush. wrote:as Renault stated one cylinder was not firing and it was not related to a malfunctioning component on their side..there is not much left apart from a wiring harness problem and possibly a ECU trouble.The second one i´d say is quite unlikely ,
the first one could be as simple as a groundwire failure.
Of course loosing a cylinder will cause the scavenging of the other cylinders of that bank to be at least reduced or less than optimum,the power losses would be immense as a F! engione runs ample of valve overlap so cylinder filling relies
almost solely on what happens in inlet and exhaust piping ...so from say 800 horse
400 were running normal and of the other engine bank a reduction by 50% say 200HP
seems to be closer to what happened than asuming you have just lost one cylinder in the equation.The engine was not sounding healthy a simple loss of one cylinder would not sound like that.that unburned fuel in the exhaust surely has done no good to the remaining 3 cylinder behaviour .
No need to apologize your post was very informative.ringo wrote:. sorry
i´m not sure how to interpret the statement coming from Renault..the component itself ,is that the sparkplug or the engine? maybe if the statement was translated from french something was lost or misinterpreted there.. what is a small issue on a sparkplug? and in anayways the sparkplug itself was not defective this is clear,as it is a component of the whole engine...JohnsonsEvilTwin wrote:Well Ron Dennis say that its possible for the ECU software to shut down cylinders to save fuel.
Also I read this on Diario AS:
"The investigation to identify the reason for Vettel's engine problem is ongoing," he said.(Renault engineer)
"A small problem with the spark plug was found, but we have no reason to suspect a defect in the component itself."
Apparently there was a small issue with the spark plug but not enough to shut down the cylinder.
I Think Red Bull have overestimated the Renault V8's fuel saving qualities and have designed a smaller fuel tank. The low exiting exhausts point to this(smaller tank) as everyone was scratching their heads to know how Newey did it this way.
If it is the case Red Bull will either have to redesign(unlikely) or conserve fuel at some stage in the race(most likely given RB6 pace).
Come on be real now. A small problem with a spark plug!marcush. wrote:i´m not sure how to interpret the statement coming from Renault..the component itself ,is that the sparkplug or the engine? maybe if the statement was translated from french something was lost or misinterpreted there.. what is a small issue on a sparkplug? and in anayways the sparkplug itself was not defective this is clear,as it is a component of the whole engine...JohnsonsEvilTwin wrote:Well Ron Dennis say that its possible for the ECU software to shut down cylinders to save fuel.
Also I read this on Diario AS:
"The investigation to identify the reason for Vettel's engine problem is ongoing," he said.(Renault engineer)
"A small problem with the spark plug was found, but we have no reason to suspect a defect in the component itself."
Apparently there was a small issue with the spark plug but not enough to shut down the cylinder.
I Think Red Bull have overestimated the Renault V8's fuel saving qualities and have designed a smaller fuel tank. The low exiting exhausts point to this(smaller tank) as everyone was scratching their heads to know how Newey did it this way.
If it is the case Red Bull will either have to redesign(unlikely) or conserve fuel at some stage in the race(most likely given RB6 pace).
