Turbines in the subcompact Bashny.Net

It's no secret that make the engine 1.5 dCi, 1.4 TSI, 1.4 TDI, 1.4 HDI, 1.3 CDTI and the like are the real heroes of our time, and why cars fitted with such engines are called "walk-through».

But as these engines proved themselves in operation than the time to "please" the owners, known only to professionals who have to repair the said motors.

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To find out what the problems are, which creates a small-displacement engine turbocharger system, what are the reasons that I should know and do the owner to the turbocharger to "pass-through" of the engine served as long as possible



 - Work up to a half liters, but impressive power on old standards - a distinctive feature of the "walk-through" of engines. How does this affect the turbine?

 - Reflect on a very tight tolerances which parameter take, whether the dimensions or quality requirements and regulations of the oil service engine. Due to the high speed of the turbine rotor needs quality lubricant, perhaps more than any other motor assembly. But if the turbine engine of the classic volume of 2-2, 5 liters of violation of the rules by changing the oil, for example, the owner of forgetfulness 2-3 thousand miles, as a rule, does not face the terrible, the engine is a small-volume critical. Narrow dimensional tolerances - this time. Small turbine vysokooborotisty more - that's two. Went wear those inclusions that were with dirty oil in the turbine - increased backlash and appeared imbalance.



Then begins beating shaft, broken plugs, sealing rings. Appears howl, oil leak, lost traction ...



Finally, the compressor and turbine wheels are starting to hurt the housing. Because of this small turbine very quickly fail. And if large turbines can still make it in time to remove and bypass the partial replacement of some parts, small volumes are not affected - there is almost always fly turbine three sheets.

 - That is the most important thing that should be taken into account with a subcompact car owner turbocharged engine, m - that the turbines in these motors are extremely demanding of oil?

 - Yes. Main Beach - Failure to replace consumables. Manufacturers and their authorized dealers of some of their arguments are now installed extended service intervals. Many of our owners take advantage of this - and why not, if the manufacturer permits? It does not take into account that these recommendations apply to new cars, and we're not about them conduct speech. We buy a used car at the best mileage with 100-150 thousand kilometers. Secondly, under the service intervals of 30 or how many out there thousands of original consumables used and what kind of oil and filters buy from us? Thirdly, these machines are mostly warranty. If they had something happen to the turbine, it is generally not a problem owner. This is the problem of who has established an elongated slot and the guarantee must change the turbine. As for us, given that the machine used, that they are not under warranty, shall be as follows: oil change after 10-12 thousand, oil - "synthetic" necessarily with the necessary tolerances. No need to save, otherwise these savings come sideways. When disassemble the turbine, it's visible.



Here, for example, the rotor assembly. See, what the risks on the sleeves? They should not be at all. This dirt - from those particles, chips, wear products that fall into the oil.



And here the risks and develop on the shaft. Just where were plain bearings. Why not show the beating? That's what untimely replacement of oil and oil filter.

 - But not a single oil well? Something else influence the life of the turbine in these engines?



 - FAP- and DPF-filter or catalyst. Especially diesel particulate filter, which now have virtually all the "walk-through" diesels. When these nodes are clogged with soot and carbon deposits, the exhaust gases do not go there, where should, and go back to the turbine. They exert pressure on the turbine wheel, in this case, a longitudinal play. Note wheel right: strips on the rear side just indicate that a wheel pressed exhaust gases. Left is an example of how it should look wheel if FAP-filter or catalyst were clogged. Since we are only talking about the "walk-through" motors, malfunction due to improper maintenance and because of the FAP-filter is most specific to their turbines.

 - Does the service life of the turbine "pensioner" riding style?

 - I think the effect, but indirectly. When driving with a small turnover more soot is formed, then quickly clog FAP-filter. Again, to burn it, just have to go more energetic. How does the clogged particulate filter on the turbine, I was talking about. As for gasoline engines is less, although, of course, the catalyst may also overgrown Nagar, but gasoline is another matter.



Turbocharged petrol engine itself is hot. A feeder feeds oil into the turbine and narrow due to the high temperatures tend coked. Oil flow is reduced and this turbine necessarily suffer. When dismantle the turbine and see that the surface of the rotor turned blue, it means that it was oil starvation. Rotor overheated. Generally there are many different reasons for early exit from the turbine building.

 - For example?

 - For example, the fuel system is not ok - exhausts becomes dirty, the exhaust gas temperature is increased, and suffers from the turbine. I would advise to find out where the turbine repaired, what was the true cause of the fault. A good expert on what he saw at dismantling the turbine should tell which way the "dig." Do not remove the root cause - have the chance again soon "get" for the repair of the turbine.

 - And what do you recommend when buying a car with a "pass-through" engine?

 - Best car show professionals. It is not always possible. Then we have to listen to the turbine works. The fact that it is something not so, indicate a sharp howl or unpleasant sound. Should definitely check the oil level, make the trip not less than 10 kilometers and then check the oil. If dropped - it is only a turbine engine is hardly 10 kilometers as "eat". Exhaust smoke, the smell of burnt oil also indicators. But a person must have a clue what the howling, and what is normal whistling turbine looks like smoke when burning oil, as well - when the feed of fuel to the engine problems. Same with traction. We must imagine how goes the same car with a working turbine that would compare with the one that is bought, and it needs to advance on a similar car of the train. You can remove the tube that goes to the turbine from the air filter, and check the clearance of the rotor. But there is a gap in all turbines, new and not new. And it's different on different models of turbines, so again, a person should know what the play for a particular model is normal, and what - no. More than anything when buying without removing the turbine will not make. So either the buyer must be a specialist or to invite a knowledgeable person on the inspection.

 - The turbine is out of service, the decision to buy "beushnyh" to "dispute". What do you think about this?



 - What can I say? This cat in the bag. What this turbine was removed from the machine, which drove thousands of 15-20 and had an accident that the hostess was a grandmother who only went to church, and so on - from fairy tales. If you look at things soberly, if you know what machines disassemble the parts, such a purchase - the most undesirable option to address the issue.

 - Finally ask: be afraid of small volumes or not necessary?

 - Should not be afraid. If the engine is working properly, if it is properly and timely service if the oil pressure is normal, if the power is not artificially increased chip tuning, the turbine will run and run for as long as she measured a manufacturer. Bad that dosed turbines to "walk-through" of the motor and this motor by 200-250 thousand kilometers, but, you know, that's another story.



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