Stricter environmental regulations and the desire for high efficiency have resulted in even this initial cost-effective system of internal combustion engines, as diesel, a small revolution. The market leader in fuel injection equipment, the company Bosch, in collaboration with European and Asian colleagues developed a new injection system called Common Rail, which means "common fuel line." Optimization of the fuel return means improved traction efficiency, a more complete fuel combustion and, consequently, the reduction of harmful impurities in the exhaust. These problems do not haunt the developers of automobile engines. In the gasoline versions of them are engaged in phase shifters, camshafts with two sets of cams, direct injection system. In the diesel versions manufacturers improve their new offspring, enhancing the already rather big pressure in its "common rail". Even in the recent past, headed by injection nozzles, which opened on the action of a shock wave in the fuel line, and closed under the action of the springs. The pressure in each tube that goes to the nozzle, creating high pressure fuel pump (high pressure fuel pump), operated by, usually a toothed belt from the crankshaft. Now the fuel rail total. The pressure at which it is maintained, - about 1800 bar and injectors are opened under the command of the control unit. Is it good in terms of power, noise and toxicity? Very good! First, the old diesels the amount of injected diesel fuel "walk" because of the different revolutions of crankshaft and mechanical injection scheme. Secondly, the diesel has worked pretty hard. Reasons are as follows: cetane number of diesel fuel at the time was fairly small, simple design of diesel engines is required is a number (approximately 45) for a good ignition and stable operation. Common Rail fuel injection as much as needed (if the fuel delivery system is working). Cetane number under the "Euro 4" - no less than 51. The work comes more smoothly, noise is reduced by about 10%. Next by several injections to warm the combustion chamber and a better ignition of a "core charge". And it's not all. After the main dose may be the final injection when the exhaust valve is open, which helps catalytic converter to work more efficiently - dozhigat harmful substances. Operates a diesel soft, smooth, and not immediately realize that under the hood. Fuel consumption is minimal, the specific power is enormous, as well as torque. Less simple and very specific - the complexity and precision of this design is slowly but surely approaching the complexity and precision of a spaceship. Previously, diesel passenger cars with mechanical fuel injection and the drive was very maintainable. Required, of course, the specialists for such work, but, strangely enough, they were. Nozzles are usually disassembled. Do you want to - I spray, you want - "tired" spring. Every whim of your (little) money. Bulkhead high pressure fuel pump required higher skills, but also not a genius. A pair of plunger injection pump can be purchased for about $ 200 (at 1HZ for LC80). Repaired - and riding down the vast expanse of our country, pouring diesel fuel from greedy tractor. Whether business Common Rail! Nozzles do not understand, fuel pump, too. During the 4 injectors to put $ 4000 for fuel injection pump - another 3000. Diagnostic equipment worth about 180,000 euros. It is clear that not all of it is. And if not, then servismeny will change everything to fault detection, so to speak, the empirical method. To "prescribe" jets in the control unit, the scanner is required. However, there are two kinds of jets - the electromagnetic and piezoelectric. Electromagnetic, they say, you can go, although such actions again have special equipment. Piezoelectric not amenable to repair. Only replacement. Strictly speaking, servismeny especially not "bother". Why? The reason for failure of the fuel system is obvious - the poor quality of this most "fuel". Some experience in the repair, the master change everything at once. Especially pleasing visitors service workers who specialize in fuel equipment Delphi. When repairs are subject to change everything to the last bolt. Even the fuel tank. The following explanation. Abrasive particles in the solar oil tirelessly "planed" plunger pair pump. The result is the tiniest scraps of metal, which is walking across the system, preventing normal operation, and finally destroying the mechanism of fuel injection. Moreover, such small particles that pass through the fuel filter. The cost of repair and replacement is impressive. The question arises: why all these torments? Is not it easier to buy a petrol car, the more so when you buy it cheaper. With the Europeans all understand. They have no refills "From Basil Alibabaevicha, as a result of operation of diesel is much cheaper. We do not yet adopted the required standards, especially for diesel fuel. With gasoline better, though, it seems, Russia is the only developed country that still allowed the use of iron-containing additives in gasoline. Compared with diesel oil is not so crucial. Well, change the spark plugs in the end. Even if Iridium to GDI, still cheaper than a ride on the Common Rail. Some motorists often do not bother the problems of his car, preferring to just ride. Do not pay attention to the black smoke from the exhaust pipe, high fuel consumption, referring to the service only when the car starts and stops pulling. It is unlikely that the environment will benefit greatly from such supporters of diesel engines, rather the contrary. But as they say, demand creates supply. Adherents of the new generation of diesel engines have already appeared, impress extraordinary technical and traction characteristics. They seem to be important only dynamic performance and serviceability and maintainability - the abstract category. How has the transition period can last? Everyone is talking about the environment, the rules of "Euro", continuing to ride the brake pads containing asbestos, which is prohibited everywhere, the main fleet of diesel trucks and the word "Euro" are incompatible. What's the use to measure CO-CH have some "dead" passenger cars, when standing next KamAZ chadit stronger than the cruiser "Varangian" the Russian-Japanese war. We have no fuel while under the Common Rail, what to say. Exceptions exist - filling NESTE in St. Petersburg, Lukoil in Moscow sometimes happy. Yes, in general, and all. Lost the original meaning of the car. Car - hence the mobile and which can be mobile when it can be used only in a particular place? Honest producers are not telling the whole story. The representative of the firm's Chrysler at a press conference was frank: "We can not guarantee on motors Common Rail, satisfying the norms of the Euro-4", if they are operated on low-quality fuel. " Want a new diesel engine - please, just not at our expense. 2,7 CRD in Cherokee, YD25DDTI on the Pathfinder and Navara, TDCI at Ford ... But why there list? Such constructions are almost all more or less well-known manufacturers. The motors are becoming more difficult and expensive to manufacture and maintain, and if similar designs are still wrong to exploit, they are able to deliver a lot of problems (including financial) to their owners. One can argue whether there is market and democracy in Russia, but the diesel fuel of good quality just not. Bye.
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