Chapter 10: Santana's Fatal Flaw

After sitting down in the conference room, Jindeler was obviously very nervous, and writhed twice uncomfortably to see that there was no one left and right, and then he asked Chen Geng in a nervous whisper: "Chen, what do you want to tell me?" Are you not allowed to go to Germany because of your country? Or have you been subjected to **? If so, I'll do my best to help you......"

What is this?

Chen Geng didn't expect Jindler's associative ability to be so strong, and he was able to associate himself with being **, and he couldn't cry or laugh for a while: I'm a student, what can I face?

However, this is the view of foreigners on China in this era, in their opinion, Red China is a very terrifying place, Chen Geng did not help the other party to reverse this view, waved his hand and said: "It's not this, I just found a few very strict logic and calibration errors in the B2 EFI system......"

"Chen, are you kidding me?" Hearing what Chen Geng said about automobiles, Jindeler suddenly breathed a sigh of relief, and before Chen Geng finished speaking, Jindeler smiled: "The B2 that Wolfsburg gave you is a carburetor version of ......."

"I know, but the European and North American versions of the Santana are EFI models, and I'm talking about the North American and European versions of the B2."

Kindler's whole body jumped when he heard this: "This can't be! And you haven't touched the EFI version of the B2 ...... at all."

"Have you forgotten, there are three EFI B2s at the Poussin base."

Jindler, who was still very excited just now, was suddenly dumbfounded and speechless.

Wolfsburg does have three European versions of B2 in Magic City, that is, the EFI model Passat B2, which the Chinese call Santana, and Chen Geng has indeed come into contact with these three European versions of B2.

If this was said by someone else, Kindler would definitely turn around and leave without hesitation, but this was said by Chen Geng, he didn't dare not go to his heart, with Kindler's understanding of Chen Geng, he knew that Chen Geng was by no means a casual person, if Chen Geng said that there was a problem with the EFI system of B2, then he definitely found something.

"Chen, are you sure?" Kindler's face was a little pale, and he was a little frightened.

"Yes, I'm sure." Chen Geng nodded affirmatively.

Chen Geng's affirmative answer made Jindler's face turn whiter more and more, and he swallowed his saliva unconsciously, and asked in a low voice, "So...... Is it very strict? ”

Chen Geng nodded: "Very strict, in certain circumstances, when the driver retracts the throttle, the system will make an extreme situation of automatic refueling," After a pause, Chen Geng whispered: "This situation also exists on carburetor models." ”

Kindler's face turned pale in an instant!

The car automatically refuels when the throttle is closed, which is absolutely fatal. Will guide zhì strict zhòng car accident defects!

Once this flaw is made public, the blow to Wolfsburg will be fatal, and for Wolfsburg, which is now extremely unhappy, it may even make Wolfsburg bankrupt because of this!

Realizing the consequences of this strict zhòng, Kindler subconsciously clenched his fists: No! This must not be the case! I have to do everything I can to stop this worst from happening!

Some readers will ask, aren't the cars at this time all carburetors, could it be that the cars at this time already have EFI?

The answer is: yes!

With the rapid development of the automobile industry, the number of cars in the world has increased sharply in the 60s, due to the inaccurate adjustment of the traditional carburetor mixture, the exhaust gas content of automobile exhaust emissions is too high, and the pollution of the atmosphere and the environment is becoming increasingly strict, which is an important factor causing global warming and producing the greenhouse effect, for this reason, the United States put forward the "Muskie Act" as early as the 60s, and Japan also proposed regulations to limit automobile exhaust emissions in 1968, 1973 and 1976. Europe, which attaches great importance to environmental protection, is no exception.

At the same time, with the continuous progress of electronic and electrical technology, especially the rapid development of transistors and integrated circuit technologies, it has provided the basis for the full application of automotive electronic fuel injection technology in automobiles.

The Santana (Passat B2) was not a successful model, and in addition to a good table in the Brazilian market, not to mention North America, even in the stronghold of Wolfsburg: Europe, the B2 was a mess.

In this case, Kindler's reaction does not seem to need to be so drastic, but the bad part is that the European and American versions of the Passat B2 are equipped with the LH-Jetronic hot-line electronically controlled fuel injection system released by Bosch in 1981.

It's going to kill you!

LH-jetronic hot-line electronically controlled fuel injection system has always been promoted by Wolfsburg as the core weapon, just like a few years later, some models high-profile advertised that their cars are equipped with ABS system, LH-jetronic hot-line electronically controlled fuel injection system The biggest feature is the use of hot-wire air flow meter, where "H" is the first letter of the English "HOT" hotline, hot-wire air flowmeter directly measures the intake quality, can more accurately control the air-fuel ratio, Significantly improve the power and economy of the engine, and significantly improve the exhaust emissions of the engine.

Since the LH-jetronic hot-line electronically controlled fuel injection system has so many advantages, it is natural for Wolfsburg to continue to use this system in the next generation of models, and the new generation of Wolfsburg mid-level car that Wolfsburg is developing and pinning all the hopes of Wolfsburg in the mid-level car market: the PassatB3 is also equipped with this system!

But now Chen Geng actually sued himself that this system has strict security risks, if this is true, it is not only equivalent to directly pronouncing the death sentence of PassatB3, but also directly pronouncing the death sentence of Wolfsburg in the mid-level car market, and it can even be said that the death penalty of Wolfsburg is announced.

He was scared to death!

He couldn't wait to kneel on the ground and beg Chen Geng, begging him to tell him about the errors in the calibration and logic of his system.

"Of course I'll sue you, otherwise I'd be talking to you about something, but do you think this is the place to talk?" Chen Geng said helplessly.

That's right, this is the Ministry of National Defense of the Republic, and it's really not a place to speak. Jindeler reacted immediately, and then he pulled Chen Geng and rushed out: "Let's go, let's go to the magic capital immediately." ”

The guy was terrified.

Chen Geng said helplessly: "Didn't Wolf Castle set up a liaison office in the capital?" We'll just talk to the Modu in the liaison office. ”

"Yes, yes, let's go to the liaison office, right now."

………………………………

Chen Geng originally thought that he and Jindeler would encounter some obstacles when they went out, after all, Jindeler is a foreigner, and the saying that "imperialism will not die if I die" is still very marketable, but Li Jianguo's reaction opened Chen Geng's eyes: he just told Li Jianguo that he needed to take half a day off to help Mr. Jindeler solve some problems, and before Chen Geng could say what the problem was, Li Jianguo had happily agreed.

When he arrived at Wolfsburg's liaison office in the capital, Jindeler arranged a conference room for himself like a madman, and then ordered that as long as he didn't come out, no one should approach the conference room, so he anxiously asked Chen Geng what was wrong with the EFI system on B2.

Chen Geng did not hide it, and said happily: "When the engine is running at high speed for a long time, and the steering system is in a continuous high-intensity working state, there is a fairly high probability that the engine will automatically refuel when you close the throttle, which is a common problem of B2, whether it is a carburetor model or an EFI model." ”

In the understanding of ordinary people, whether it is an EFI car or a carburetor car, we control the amount of oil entering the combustion chamber of the engine through the throttle, which is actually a misunderstanding, the working method of the carburetor car is of course so, but in the EFI car, we only control the opening of the throttle, and the amount of oil entering the combustion chamber is controlled by the ECU from beginning to end, and the air flow detected by the ECU automatically controls the amount of fuel injected. So more strictly, our foot control zhì is not the accelerator, but the "air valve".

Under normal circumstances, of course, the pull line throttle will not appear when you release the throttle but there will be refueling, because the cable is elastic, but this is actually very easy to understand, the whole set of throttle lock mechanism is all mechanical parts, if there is too much dust on individual mechanical parts, or because the temperature in the cabin is too high to cause the mechanical properties of the key springs and other components of the zipper system to decay, there will be individual parts of the response stagnation, when you release the throttle throttle but the throttle is not as you think, Even in some extreme cases, when you release the throttle, you will increase the throttle.

This fault is also a classic fault of Santana B2, the reason is that the throttle control system was not considered enough at the beginning of the design, but because of this failure, there were several serious accidents, Wolfsburg changed the design of the throttle system in 86 to solve this problem, and the first batch of CKD assembled Santana in China in 83 years to 86 years only assembled a total of 10,000 Santana, this small probability of the event naturally did not appear, or even if it appeared, I did not realize that it was a problem with the car, but Chen Geng has worked in Wolfsburg for many years, and he will not know about this typical fault of B2.

Kindler is an automotive engineer and knows that this is possible.

Grabbing his hair in pain, Kindler asked hoarsely, "What is the probability?" ”

"If you follow the test method I specified, it's about 30%."

30%？ Kindler's eyes suddenly went black!