Coquettish Rebirth

Such an SUV with the same alien technology is said to be a prototype car, but in fact, not only one was made, but several were built in the early stage alone-in addition to running on the field, there are still vehicles to be sent Go to a special aging workshop to do the aging test.Pass a series of tests such as high temperature, wind and sand, etc., all of which need to be tested by prototype vehicles.And this kind of test is also what must be done after the prototype car is made-otherwise how can it prove that there is no problem in engineering design?Engineers and designers are in charge of these specific tests. As Jia Hongjian is such a detached boss, all he needs to do is to play with his own interests.For example, he thinks of a playable one—although we are using an old motor, how about doing a test of acceleration from [-] kilometers?

Although when it comes to the finalization, the electric motor must be a 200-horsepower Tomita Motor, but Jia Hongjian still wants to know how fast this car can run with a total of 488 horsepower now!Don't forget the Porsche 911's 06 sports car, which is similar to our car in terms of weight and horsepower!The Porsche 911 can accelerate to 4.1 kilometers in [-] seconds, so how much can we run with this motor now?Isn't this very curious?Since Mr. Jia said that he wanted to run a [-]-kilometer acceleration test, the people from the testing department must come to do the test.Soon after everything was arranged, Jia Hongjian came to a professional car testing field set up by Huaxia Hi-Tech in the suburbs on a sunny afternoon.

This time Jia Hongjian came to a professional 400-kilometer acceleration test runway. Such a runway is a [-]-meter-long asphalt road professionally paved. From a distance, the runway looks like an airplane runway!And the test driver who is going to run the test today looks like he is going to fly a fighter jet - he is wearing a tight-fitting silver protective suit all over his body. There was an accident and the car overturned and caught fire.This test driver won't get stuck on the spot and get cooked!Of course, this test pilot also needs to wear a helmet. It can be said that this test drive runs at a speed of [-] kilometers, which is basically the same as a test pilot flying a prototype fighter jet—because no one knows whether the prototype product has any engineering design. Dark disease, no one knows if it will suddenly fail in the middle of driving or something!

For such a 10-kilometer acceleration, the Huaxia Automobile Testing Field used high-tech equipment imported from the United States.This high-tech equipment is called performancebox.The corresponding literal translation into Chinese is "expression box".This thing is installed in the car, a bit like the GPS navigation in the car, but there are many things that can be tested - the most used is the 10-kilometer acceleration test.Such a precision tester, together with GPS, communicates with GPS ten times per second to calculate the real-time speed!In addition to the first time, it also has a [-]hz gps engine, which detects the car's positioning, acceleration and tail drift [-] times per second!It can be said that with such a precise tester, many things can be measured directly by this small thing.

Probably after debugging the tester.The test driver is ready to get into the car, while other staff members form a human wall in front of the car that occupies the entire width of the lane.What is such a human wall for?To clear the way!Clearing the road does not mean letting the hawkers who set up stalls on the road leave - we are professionally testing the roads, where are there any hawkers!This is to clear the road, but it is the same as that on the aircraft carrier, so that there are no small stones on the road!When a plane takes off and lands on an aircraft carrier, if there are small stones on the deck, it may not cause accidents to the plane, but when the small stones are collapsed by the tires of the aircraft, the small stones that fly out will not be able to penetrate the human head?And on our [-]-kilometer acceleration test road.It is more for the safety of the car and the test driver.

Everyone lined up and walked forward slowly, making sure that there was not a single pebble on the 400-meter road.The test driver got in the car.While the test driver was warming up the car, the person in charge of the test drive center introduced Jia Hongjian. "Mr. Jia, our test road is built according to the standards of airstrips, so that the resistance of the road surface is higher than that of ordinary roads, which ensures that the car has more grip..." Hiss, this sounds a bit "cheating". mean?Jia Hongjian knew that there was room for "cheating" in any test.Any test has various preconditions. When the preconditions are different, it will lead to a lot of deviation in the results!Not to mention anything else, maybe because our road uses the airstrip standard, it can be half a second or even a second faster than running on ordinary roads!

Of course.At such a time, Jia Hongjian would not demand a change of venue with a sense of justice. Seriously, our test was originally for us to see, why make it the same as other standards?Our results will not be made public!Secondly, is it true that the standard of others is to use ordinary road surface?Who said that?Who said that others can't play tricks?It is said that the Germans are rigid or something, but if you really want to cheat, the Germans will not be behind at all!Therefore, Jia Hongjian felt that there was no need to change venues at all, and there was even no need to change venues for the official test in the future!This test road was designed according to the airstrip standard, and Jia Hongjian seemed to think it was very good!

"Generally, when professionally testing the [-]-kilometer acceleration results, various manufacturers will play tricks. Basically, the industry's practice is to toss the car into the waste to ensure the best results after several times, and then take an average. When other companies test, they basically burn out the tires when they are about to start, first pull up the speed, let the speed reach the maximum torque area, and then step on it to let the car go out, this will hurt the clutch, but the starting speed can be faster, So it hurts the car more. But our electric car doesn't need to hurt the car, our torque is always constant, and the starting speed is much faster than the internal combustion engine..."

After listening to the person in charge's introduction, Jia Hongjian realized that there were so many tricks in the [-]-kilometer acceleration test!And in addition to this little trick of burning tires to pull the speed, there are many more tricks to improve performance-the simplest way is the tire pressure. The higher the tire pressure, the better the performance. At the same time, the fuel in the tank The amount of weight will also slightly affect the performance, and even whether there are "sundries" such as spare tires in the car will also slightly affect the performance.On the surface, it seems that one more tire does not affect the performance much, but what about putting all the details together?One thousandth of a second is affected here, and one thousandth of a second is affected there. In the end, it may come out in one hundredth of a second.

And these practices are really just small skills, and the real big skills will affect the results even more--ordinary roads and asphalt roads, or even newly paved asphalt roads and old asphalt roads that have been running for a long time, the results may be very different. There is a big difference, and it is not impossible that the difference in the results of the 0.5-kilometer acceleration experiment is close to [-] seconds!At the same time, compared with ordinary asphalt roads and runway-level roads with a relatively high friction coefficient, it is easy to cause different results.The climate will also lead to different results. For example, the running results in cold weather may be better than those in hot weather-the air density in cold weather is higher, and the combustion effect is better for turbocharged engines. The strength and direction of the wind will affect the performance more obviously.Running with the wind and against the wind, it is normal to be able to come out within a second!

But this kind of test is not a competition in a major international sports meeting after all, and there is no official stand out to subtract the wind speed from the [-]-kilometer test result!So when the manufacturer advertises the acceleration of [-] kilometers, the data can only be "for reference only"!No organization can correct this kind of result like the official world-class games, and no one can crack down on this result, because everyone basically does this!As long as the manufacturer does not refit the test car frantically, then basically other manufacturers will follow the unspoken rules and not expose the inside story. After all, other manufacturers will use small tricks to make the car score better, right?

Our electric suv test of Huaxia Automobile did not use so many "tricks". It can be said that the road surface of the test site is the standard of the airstrip, and there is nothing else to be flattering - there is no wind today , there is nothing to "leverage", and our car is not a turbocharged engine, so the temperature has no effect on us, but it is like removing the "sundries" in the car and low fuel consumption. Jia Hongjian didn't even bother to do such things!We are not participating in any competition, we are just running around to see the results. As for all kinds of opportunistic tricks?

Just when the person in charge of the test site here introduced the same, the test driver had finished warming up the car and was about to start running seriously.The engineers and designers on the site pushed them to a safe distance one by one, and the safety officers prepared their cars one by one, and even prepared fire extinguishers at hand-if a car accident occurs halfway through the test, these safety officers The firefighters will drive up to put out the fire and save people immediately!

The scene was silent. As an electric vehicle, our suv does not have a low engine running sound like an internal combustion engine.When the test driver felt that it was all right and stepped on the accelerator, our suv didn't burst out with the roar of the engine, but rushed out with a quiet "hiss..." !It can be said that in the blink of an eye, the car rushed out of the range of more than ten meters in front of the eyes, and then it seemed to be running faster and faster, and then it seemed that after the normal interval between two blinks, the car slowed down significantly!Something went wrong?Jia Hongjian's immediate reaction was like this, but then he thought of something!For example, the Porsche 911 accelerates to 4.1 kilometers in only 4.1 seconds. Isn't 10,000 seconds within the normal blink interval?As long as our car has good performance and aerodynamics, wouldn't it be possible to run the 15-kilometer acceleration test in a few seconds?This is not an ordinary [-]+ suv, not the kind of car that only takes about [-] seconds to accelerate from [-] kilometers! (To be continued..)