David W. Gilbert's investigation into the Toyota throttle problem

[cblukraine]

Wow...what a tard. The guy said so himself that the circuit had to be compromised for this to occur. So, how was the circuit compromised...maybe it was terrorists! We have to assume so because he certainly provides zero insight.

[cblukraine]

Wow...what a tard. The guy said so himself that the circuit had to be compromised for this to occur. So, how was the circuit compromised...maybe it was terrorists!

[derekkchung]

American's protectionism SUCKS! Too bad so many Americans are brain-washed. Wake up and see from outside what they are doing.

[Jaikido1000]

How much was he paid by the lawyer who sued Toyota?　He seems to cross the lines of his brain to speak lots of bullshits. Cool.

[RadioPaul1]

How much did they pay their own investigators to try and debunk him? Yes they hired their own group! One problem he has and is still able to reproduce the problem with the excelator. Toyota losses this round!

[areufkingkiddingme]

@RadioPaul1 Um, if you use his method on other cars, you get the same result. He added two circuits to the electronics to create what end he wanted.

[ramitbhalla]

The "race condition" in the computer could also explain why the car was accellerating. Even notice in cruise control when you accellerate the pedal is depressed even if you don't touch it. Thus in a "race condition" event the computer sent the wrong signal it would cause the car to accellerate (and you can't pull the pedal back) and also disable the fail safe engine override. The brakes would essentially be useless.

[ramitbhalla]

all modern cars are controlled completely by an onboard computer. That would actually explain two things:

1. Why car kept accellerating while the brake was pressed

2. Why they CAN'T replicate the problem.

there is a problem known as a "race condition". The problem is fairly well known but it's probably one of the hardest things to isolate because the issue in itself occurs only under very very specific conditions which often cannot be isolated/replicated easily

[pochi0701]

USA is unfair.

[stargazer4atime]

continued from below ...

The protective components are typically TVS or Schottky diodes connected across 5V and 0V. They have a failure mode that could lock both throttle inputs at 2.5V.

After the power is disconnected, the fault clears itself.

[stargazer4atime]

The throttle control is a dual potentiometer, one wired the reverse of the other. The signals goes from 0 to 5 volts and 5 to 0 volts as the pedal is depressed. The ECU then checks one voltage as being the complement of the other. So far so good.

Except, as Dr Gilbert demonstrated, when at half throttle (2.5V), the ECU is blind to a fault.

The inputs to the ECU are protected from electrostatic discharge etc. It is not uncommon for the protective components to be packaged in pairs or quads.

[stargazer4atime]

Gilbert was absolutely correct - he is not changing the circuit - he simply applied a fault condition to one of the accessible leads. This is standard practice in any FMEA process, and Exponent was very stupid to come out and defend Toyota. Exponent, more than anybody in this business should have realized that somewhere in that ECU the signal trace may route next to a fault in PCB, component, or chassis that generates the same condition.

BTW - I design life support medical products.

[tenacioustaut]

@stargazer4atime

He has admitted that he made it up

[Xytos]

@tenacioustaut HE didn't admit anything, abc admitted to falsely misleading the tachometer. gilbert never intended it to look that way and he proved that toyota cars can indeed accelerate uncontrollably within the conditions.

[tenacioustaut]

@Xytos

any cars accelerate under those conditions lol

[Xytos]

@tenacioustaut not all cars will, SOME other brands will, but definitely not all or even most. also, if the car accelerated uncontrollably in a volkswagen, and you hit the brakes they will actually override the acceleration until it eventually stops the car.

[tenacioustaut]

@Xytos

Check out what the Ministry of Transport finally admitted: Toyota is safe

[tenacioustaut]

@tenacioustaut

[tenacioustaut]

@Xytos

lol

first of all, the condition under which cars accelerate uncontrorabilly wouldnt occur.

Dont be fooled around by this guy

[tenacioustaut]

@Xytos

NEW YORK (CNNMoney) -- An intensive 10 month investigation into possible causes of unintended acceleration in Toyota cars found no fault with the automaker's electronic throttle control systems, the Department of Transportation announced Tuesday.

[pendejo707]

Funny how he did not say anything about how Toyota uses 2 throttle position sensors. Two potentiometers built into the pedal that work in reverse of each other. sensor 1 goes low to high and sensor 2 high to low resistance.

[farenopusizu]

dirty white Chinese

[binzsta86]

I SMELL BULLSHIT...FOOL IS A LIAR!!

[tenacioustaut]

@binzsta86

He has admitted that he made it up.

He knew that the thing happens to OTHER CARS, too; however, he did not even mention it

[Zarbonk]

Isn't it a strange "coincidence" that within hours of news reports that Toyota has embarked on a campaign to discredit Prof. Gilbert, a few comments suddenly appear that suggest Prof. Gilbert is so like yesterday or something?

The fact is that Prof. Gilbert discovered at least one way to demonstrate a scenario where the Toyota computers and wiring can cause the so-called "Toyota throttle problem" . . .

Logic strongly suggests that if there is one way, then there probably are more ways . . .

[petestowne]

Well. Give me a Toyota and ill demonstrate ways to make it burst into flames when you hit the brakes, change gear or turn on the stereo.

If you have to add components to back your argument then it is not credible.

[biggiejackson]

Your a fucking Idiot! I can do alot of things and make up some bullshit! this guy is liar PERIOD... Not only Toyota but alot of other companys prove this shit as fake... Toyota showed a BMW DO THIS? so lets go after BMW? fucking dumb ass jerks!

[areufkingkiddingme]

@Zarbonk Why would it be strange?  If someone is trying to damage your reputation, I'd find it strange if you DIDN'T do anything about it. I find Toyota's campaign pretty convincing.

[sxn10]

his 15 minutes of fame is so over and he looked like a fool now. he rigged the systems to produce his own result. this is nothing more than falsify the data to obtain favorable outcome for personal gain. David W. Gilbert need to go back to school and start all over again.

[teggs98]

@sxn10

yes u r right for that

[usery1z]

They should do a investigation on this Professors Gilberts himself.

the director of Stanford University's Center for Automotive Research to try to refute the claims. Toyota said Stanford professor Chris Gerdes will show that the malfunctions Gilbert produced "are completely unrealistic under real-world conditions and can easily be reproduced on a wide range of vehicles made by other manufacturers."

[JohnMathen]

What makes you think that this guy is qualified to do a detailed analysis.

This is his qualifications

PHD, Workforce Education and Developement, Southern Illinois University, Carbondale, 2006

MS, Industrial Arts Education, Oklahoma State University, 1981

BS, Industrial Arts Education, Oklahoma State University, 1979

AAS, Industrial Arts, Northern Oklahoma College, 1977

Did he understand the psychology of the car of do an artistic analysis

[slagjumper]

No Toyota dealer or US government official could have thoroughly investigated the problem, since Toyota is only now providing devices to read the EDR. That would have shown if the brake was on, speed and throttle position. 200 Million to one shots happen everyday in the US. Also why was the Sienna not included in the recal?

[waiyade]

",,,The analysis of Professors Gilberts demonstration establishes that he has reengineered and rewired the signals from the accelerator pedal. This rewired circuit is highly unlikely to occur naturally and can only be contrived in a laboratory. There is no evidence to suggest that this highly unlikely scenario has ever occurred in the real world. As shown in the Exponent and Toyota evaluations, with such artificial modifications, similar results can be obtained in other vehicles,,,"

[carquestions]

Carquestions takes an inside look at the testimony of David Gilbert and Sean Kane as they try and sell a wild theory to Congress. The associate professor Gilbert puts his hand to a remake of some of automotive history's most discredited theories of unintended acceleration while Mr. Kane produces the cooked up paperwork in order to support it. Carquestions attempts to explain "Gilbert's Theorem" but in the end finds a simple explanation is more than sufficient

[pavelow235]

His office chair is like a car seat....maybe from a GM automobile, you know, the company he works for.