AT THE PEAKS OF MOSCOW WEIGHTED AND CARS AND THEIR OWNERS
So technical inspections are indisputably necessary: according to Western experts, they can reduce the number of victims in accidents by 10%! We didn’t come up with this: the legal foundations of regular maintenance are laid down in the Vienna Convention on Road Traffic (1968) we signed and the Vienna Agreement on Uniform Conditions for Periodic Maintenance and their mutual recognition (1997).
But this is from the field of theory. But in practice it’s different. Those who are faced with a technical inspection in Russia, especially with its infamous variety under the name "instrumental control", sometimes come across seditious thought: who needs it? Our experiment showed: the difference in the measurement results of the same parameters on the same equipment can exceed all conceivable error limits! Although all the PICs we visited had Rostest certificates on the metrological calibration of instruments …
First try. Instrument control point of the South-Western district of Moscow in Yasenev (photo 1). And the first failure: the devices showed that the specific braking power of the six-year-old Opel-Astra working braking system is only 0.45 (instead of 0.59 according to GOST).
The second attempt: General Motors branded service (photo 2), brake efficiency - 0.84, which is much higher than normal. Together with the printout, I’m returning to the PIK in Yasenevo for a coupon that is supposed to be in good working order. But there, over the printout from the service … they laughed: they say, "they have a stand, and according to GOST it is necessary to check the brakes on a roller." And they checked - at the same stand as the day before. He showed that the amount of braking force decreased from 5570 to 5040 N (almost 10%), and the mass of the car with its owner, first-aid kit, fire extinguisher and warning triangle increased from 1260 to 1320 kg (almost 5%!). Accordingly, the specific braking force was 0.39 instead of yesterday's 0.45.
Where did the extra pounds come from? According to the controllers, it was … a bag of potatoes in the trunk: oh and witty guys at this PIK! True, they refused to search for the bag, and since the stand did not show mass along the axes, it was not possible to find out exactly where the “potato” was. Could, for example, and roll under the pedal …
Third attempt. I’m going to another GM technical center (photo 3), already with a roller stand: the total braking force was 8040 N, the specific braking force was 0.75 (hurray, I go through again!), And the mass (with a master, first-aid kit, fire extinguisher and warning triangle) - 1090 kg. I am leaving for OTOR-1 (photo 4). And so - after half an hour the inspection was passed and even a ticket was received! However, everything was spoiled by excessive curiosity - I asked for a printout. And then it turned out that the stand on which the car was just checked was not connected to the printer. And the neighboring one showed that the same brakes are faulty (the total braking force was 6510 N, the specific brake was 0.53). They took my ticket right away: first, they say, they checked the car on a faulty stand!
There was something to be terrified of. According to the staff of PIK and the traffic police, I’m driving around the city without brakes, and the workers of the “Opel” technical center consider me nuts for another reason - my aunt is looking for malfunctions where they are not there. At night I had a nightmare about the failure of the brakes, as well as about the removal of numbers for driving without a ticket. Then I went to another service station (photo 5): I decided to update everything I could - front and rear pads, discs, drums, cylinders, brake fluid, which cost me a round sum equivalent to $ 400. At the same time I got the text of GOST R 51709–2001 and sat down to study it.
Having familiarized myself with this wonderful little book, I realized that the conditions for checking the brakes are constantly being violated. Measurements are made without a passenger in the front seat, the force sensor on the brake pedals is not used, no one checks the tire pressure, and it is impossible to bring the wheels to a clean and dry state with all the desire - you have to call in directly from the puddle in front of the gate. But GOST is GOST, and I decided to achieve conditions as close as possible to the "statutory".
Another measurement with new discs, pads, cylinders, and drums took place in the presence of representatives of the State Unitary Enterprise MGSTK, the Moscow City Council for Technical Control, the organization responsible for the operation of PIKs. They visited the Yasenevsky point and seemed to be trying to comply with all the requirements: they checked the tire pressure, waited for the snow that got into the tread to melt and the wheels dried, tuned the force sensor to the pedals, which did not want to connect to the stand for a long time, dried the pads, etc. Preparatory procedures took two and a half hours, and the result was … worse than ever. The total braking force was 5160 N, decreasing by 21% compared with the previous measurement at the same stand. Apparently, the new discs and pads are to blame for everything!
ABOUT POOR DEVICESSAY THE WORD
The last attempt. PGTO Znak on Leningradsky Prospekt (photo 6), according to local motorists, has recently been equipped with brand-new equipment. And - cheers, cheers! - the test results here were similar to those shown by the brake stand in the branded technical center, and even before the replacement of parts! And the braking efforts, and the weight of the car, it turns out, were normal! If we had contacted Opel here from the very beginning, we would have avoided the cost of new disc-pads-drums, not to mention the dead nerve cells that died forever.
And the stands at PIK in Yasenev and in OTOR-1, it turns out, they are simply shamelessly lying …
This little experiment of ours is just a confirmation of the simple idea that a successful inspection depends not only on the health of the car, but also on the equipment on which it is checked. True, car owners are responsible for the technical condition of the car, but there seems to be no one to answer for the diagnostic tools.
Unlike branded foreign-made technical centers that can service the same brake stands at manufacturers, PIK owners probably don’t think about it - it's expensive. Although they conduct a state inspection, but the enterprises are private, except that the TO ticket is issued by a seconded traffic policeman. It remains to be wondered in what condition the stands are, by whom and how routine maintenance is being carried out, and whether they are being conducted at all.
It turns out that an inventory of the entire PIK economy would not be in the way, involving manufacturers to assess the condition of the equipment. Expensive? But the same State Unitary Enterprise MGSTK receives from each machine 5% of our hard-earned money paid for diagnostics. If for a year in the capital instrumental control passes, say, 500 thousand cars, a decent amount runs in - about 250 thousand dollars. You can probably fork out to check the equipment, the accuracy of which depends on road safety! In any case, something radical needs to be done here, or you see, in Russia they manage to discredit a system of instrumental control that is reasonable and has been tested in the world for years.
The specific braking force Hm is calculated by the formula:
Hm = SPm / Mg, where
SРm - the sum of the braking forces Pm on wheels, N;
M is the mass of the car, kg;