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xcel
08-08-2008, 06:29 PM
They say racing improves the breed, but will “KERS” proposed for Formula One next year have any influence on road cars? (http://www.telegraph.co.uk/motoring/main.jhtml?xml=/motoring/2008/08/09/mfkers109.xml)

http://www.cleanmpg.com/photos/data/501/BMW_Mechanic_shocked_by_KERS_sytem_at_Jerez.jpgFranca Davenport - UK Telegraph - Aug. 8, 2008

Future shock: a BMW F1 mechanic was injured during KERS testing at Jerez.

KERS -- An inexpensive hybrid promise for the regular car… F1 may be pushing too far however? -- Ed.

Imagine for a moment that Telegraph Motoring decided to run a spot-the-difference competition between a Formula One car and a road car. Even the least mechanically minded of us would surely circle enough differences to make the paper resemble the doodlings of an Olympic logo designer.

Not long after the internal combustion engine first chugged its way out of the primordial oil, the racing car began to evolve into a different species from its road-going counterpart. Following basic Darwinian principles, the F1 car adapted to its environment: one that requires high speed, huge acceleration and deceleration and little concern for anything else, with the recent exception of accident survival. However, thanks to the current motorsport regulators, wider environmental issues are already having an impact on F1 car design.

From next year the governing Fédération Internationale de l'Automobile (FIA) is allowing the optional use of Kinetic Energy Recovery Systems (KERS) in F1. The idea is not only to make the sport more eco-friendly, but more road-relevant. However, just as several different technical solutions are emerging from the rather woolly KERS remit, there are several interpretations of "road-relevancy".

Some are more enthusiastic than others. Nick Fry, CEO of Honda F1, describes KERS as a godsend. "From a manufacturer's point of view, F1 has to be the pinnacle of technology," he says. "Without something like KERS, we'd be dinosaurs." Fry believes that the KERS could help make Honda's road-going hybrid systems lighter, smaller and more power-dense, but sees the greatest benefit in the development of engineering expertise. "When people say it can't be relevant because the cars are so different, they're missing the point. It's all about training engineers and the development of long-term intellectual property… http://www.telegraph.co.uk/motoring/main.jhtml?xml=/motoring/2008/08/09/mfkers109.xml

philmcneal
08-09-2008, 12:29 AM
sucks to be that tech, lol i hope i don't get injured in the future.

Project01SC2
08-09-2008, 12:43 AM
sucks to be that tech, lol i hope i don't get injured in the future.

Or at least not with the world as a witness. :eek:

I think that NASCAR needs to have a hybrid race class. It may not be that fuel efficent, but like the F! series, it would help manufacturers have another reason and another set of ideas on how to make systems last longer, be stronger, and reduce weight.


Bob

sailordave
08-09-2008, 12:47 AM
I'm surprised that 24hr endurance racing hasn't tried the hybrid tech.

Timothy
08-09-2008, 11:27 AM
Ouch! That's not cool. :(

xcel
08-21-2008, 12:24 PM
Hi All:

___I found out some more on the BMW Sauber F1 Team mechanic injury and its causes while BMW was testing the Formula One KERS system last month.

The BMW Sauber F1 Team have concluded their investigations into the KERS incident at Jerez in late July. Markus Duesmann, Head of Powertrain, gives more details.
What exactly happened in Jerez?

Markus Duesmann, Head of Powertrain: “The mechanic suffered an electric shock after touching the sidepod and steering wheel of the car. There was a high-frequency AC voltage between these contact points, the cause of which has been traced back to the KERS control unit and a sporadic capacitive coupling from the high-voltage network to the 12-volt network. The voltage ran through the wiring of the 12-volt network to the steering wheel and through the carbon chassis back to the control unit.”

Note on capacitive coupling: this refers to an inadvertent transfer of electric voltage between two transfer media by inductive or capacitive coupling.

Was there a serious danger to the mechanic and the driver?

Duesmann: “No, as only a small amount of energy can be transferred through this capacitive coupling effect. However, the energy is sufficient to cause an extremely painful reaction. The driver was insulated against the car by his racing overalls and gloves and therefore not in any danger.”

Why did the investigation take so long?

Duesmann: “It was not possible initially to reproduce the capacitive coupling effect in the car, as the problem was caused by a sporadic error in the control unit. Due to the extremely high frequency of the voltage in the steering wheel, the safety mechanisms and data recordings did not pick up on the error. In the absence of data, all the theoretical possibilities had to be systematically investigated and analyzed in tests. Furthermore, the capacitive coupling effect only occurs under certain conditions. Without the option of driving the KERS test car used in Jerez again, we had to reconstruct these conditions. We also had to develop a model to be installed between the steering wheel and sidepod which replicated the characteristics of the human body as an electric transfer element.”

What measures are now being taken to solve the problem?

Duesmann: “In addition to the measures required to tackle the issue at hand, the extremely far-reaching analysis we conducted also gave rise to other recommendations which are of great value for the development of electric KERS systems. Among the measures arrived at are changes in the design of the control unit to avoid capacitive coupling effects, extended monitoring functions for high frequencies and a conductive connection of the chassis components to avoid any electric potential.”

What will happen with these findings now?

Duesmann: “We have already handed over this safety analysis, complete with measures and recommendations, to the FIA, and will also make our findings available to the other teams at the next meeting of the Technical Working Group.”

When will the next track test for KERS take place?

Duesmann: “We will resume the testing program once all the necessary amendments to the safety concept have been implemented. We expect this to be the case in the autumn.”
___Good Luck

___Wayne



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