Weak places and disadvantages of the engine K9K. Weak places and disadvantages of the engine K9K engine ventilation scheme K9K diesel

You decided to buy a car and can not decide on the choice of engine. What better car, with gasoline or diesel engine? This question, as well as the answer to it is very relevant. For example, Diesel has an advantage over gasoline engines with the same power - economical fuel consumption, and vice versa, loses to them by the fact that a good quality diesel engine in Russian refills is hard to find, and ride on the one that is more expensive. In this article, consider the turbocharged diesel K9k. - 1.5 DCI, widely used on cars from different manufacturers.

Diesel Motor K9K Single-row, K Series - Development of Renault-Nissan 2001, has four cylinders, eight valves. Its production has been established in three countries: Spain at the factory Valladolid Motores, Turkey - Bursa Plant, India - Oragadam Plant. K9K is represented by a family of diesel engines of various models. Their most important differences: power, turnover, torque, fuel consumption, the ability to install a manual transmission or automaton.

Diesel characteristics K9K -1.5 DCI

For identification, all Renault motors have the appropriate XNY ZZZ marking, respectively, K9k. - The first three characters. For the correct understanding of the labeling of Reno engines, you can see the data in the table with decodes.

Decoding engine labeling RENAULT by three letters

Reading the marking in accordance with the tabular data, it becomes clear that the engine K9K: K is a cast-iron block and non-removable cylinder sleeves; 9 - diesel with direct fuel injection; K - volume of 1461 cm³.

Application of diesel models K9K

Installation Place Plateplate Writing

Disadvantages of K9K.

• Increased sensitivity to low-quality oil and fuel;
• Low power

The main disadvantage of K9K is the increased sensitivity to poor-quality oil, to the late replacement of oil, as a result of which, when run 150000-200000 km, the connecting rods occurs. If you have the facts of previously mentioned disorders of oil-related engine, then do not hesitate, rather change the liners. The same is recommended to do when buying a car with mileage. Pour high quality oil, and replace it no later than the installed developments (see table). Many complaints about motorists' reviews on the COMMON Rail system of Delphi. Does not tolerate DVS poor-quality dielair, and in the fuel pump high pressure Problems are beginning with plunger pairs due to metal particles as a result of production, and then the nozzles begin to clutch, the engine troit. Selection of motors with alternative options fuel equipment And replacing the fuel filter times in 8000-10000 km original, plus the use of good fuel will get rid of the problems with the fuel injection. The failure of the turbocharger mainly occurs due to the ingress of metal particles in oil, the concentration of which rises at times when the oil replacement is impaired on time. The power of the DVS is not enough, not more than 110 liters. from. The lack of horses is felt on any roads when there are cargo four passengers from 100 kg to the salon, the engine has to sweat through the car burning the decent fuel supply, the duration of overclocking and fuel consumption is increasing, maneuverability during overtaking and rebuilding increases.

Weak places K9K.

• Connecting rod liners;
• TNLD, nozzles (Delphi);
• Advance pressure sensor;
• Position sensor crankshaft;

More detailed pro weak spots

Running liners, as already described above, one of the weak seats of the Diesel under consideration. With the material of the liners, everything is in order. The reason for the jamming and turning is indicated in disadvantages.
TNLD, nozzles - delphi food systems very early die on the substandard Russian Solar. There are other more reliable options for fuel equipment, such as Siemens.
Pressure pressure sensor - its failure is not frequent, but it happens. When it fails, the thrust disappears. The problem is solved by replacing the new one.
The crankshaft position sensor - according to reviews, often fails on vehicles with big mileage. Malfunction manifests itself detonation, instability idling, reducing the dynamic, jamming the car in motion, the game of revolutions will not start from the starter. These symptoms can be short-lived and in this case will help computer diagnostics. In the event of a malfunction, the sensor is replaced.

Output

For properly operation The engine is reliable, as a rule, 150000 km serves to run it properly. The intimateness of the replacement of the timing belt leads to failure motor. The breakdown or location of the belt is fraught with a burden of liners and flap of valves. Another frequent cause of problems with DVS occur due to non-compliance with the periodicity of oil replacement. If you exploit the engine with the instruction manual and maintenance, taking into account the corrections for the periodicity of the oil replacement, indicated in the table with the characteristics (see above) and the filter, the engine consists of a more installed resource of 300,000 km.
P.S. Dear drivers, Specialists hundred! Waiting for your feedback and questions in the comments on disadvantages, weak points in operation, maintenancerepair.

The French car, which in its characteristics is perfectly deservedly attributed to the category of SUVs.

It is produced only in some countries, such as Romania, Colombia, Brazil and, recently, Russia.

Created a car with a platform in (Logan), in combination with the front actuator. So far, a manual gearbox is proposed for front drive (5 - 6 speed), in the future it is supposed to offer for Russian market and S. automatic box Transmissions.

Like most real SUVs, it is equipped with a diesel 1.5 - lithing motor, the power of which is 90 horse power. Distinctive trait Renault Duster engine K9K The device is that, firstly, it is quieter than gasoline, when operating in the city feature, at 100 km / h, secondly, if on a gasoline engine it is virtually impossible to move from the second transfer to the slide without subpalin clutch, That Diesel is lucky everywhere, of course, if not too cool ascent. Yes, he accelerates slightly slower than his petrol fellow, but here you can miss in the gears, will still pull out. In the city feature, with full load, 7.5-8 liters are enough per 100 km, and beyond the city of good savings - 6.5 liters per 100 km. Thirdly, the unique first transmission replaces the reduced, the car crawls dirt road And the hills up, it would be for what it hooked.

Diesel "Duster" is heavier than gasoline by 58 kg, slightly swinging on the ground, but it does not matter, the shock absorbers will withstand.

Renault Duster withstands our diesel fuel!

The device Renault Duster engine K9K is such that it does not allow you to quickly respond to gas and brake pedals. It is noticeable at high speed, and in urban conditions - no.

Engine maintenance characteristic:

• Oil change every 10 thousand km, in accordance with technical notew NT5342A engine K9K, - 4.5 liters.
• To replace the oil, you need a gasket and an oil filter.
• Air filter also change every 10 thousand km
• The air conditioner cleaning every 2 years is desirable.
• Fuel filter - 3 options:
• Normal 8200638748,
• With a hole under the heating of fuel 164005033r,
• Under the water availability sensor 8200732750.
• Periodically, every 60 thousand km of the belt replacement.
• Every 90 thousand km of brake fluid replacement.

Each time, when replacing the drive belt, change the pulley. All this needs to be done, even if you do not understand the engines when contacting the station those. Services.

Engine specifications:

• engine type - diesel, 90 horsepower.
• Transmission - 6-speed, mechanical.
• the drive is complete or front.
• carrying steel body.
• suspension
• front independent, type McPherson,
• rear - spring multi-piece, with a stabilizer,
• Acceleration up to 100 km / h in 15.6 seconds.
• Maximum speed - 156 km / h.
• The brake mechanisms of the front wheels - disk, ventilated,
• rear - drum.
• Ploot wheels - 2673 mm.
• Capacity fuel tank - 50 liters.
• The trunk volume is 408 liters, with folded rear seats - 1570 l.

1.5 DCI is a diesel four-cylinder engine with a turbocharger. Motor volume - 1.5 liters, and power, depending on the modification, can vary from 64 to 110 horsepower. Engine index - K9K. Released since 2001 and during this time some changes have undergone.

It is worth noting that this is one of the most popular turbo diesel engines created by the Renault-Nissan Alliance. This DVS is most popular in Europe, so on secondary market We can often see Urgent Renault and Nissans with such an engine. By the way, this unit is set for several more Mercedes.

From the obvious advantages of the motor - good thrust on the bottoms, relative economy of fuel. Of the minuses - poor susceptibility to the quality of diesel fuel, especially the Russian and maintenance requirements.

Indeed, that this DVS will serve for a long time and regularly needs to be followed. And this is changing the engine oil every 10,000 km of run or even earlier, while changing the timing belt - every 60,000 km and of course not overheat.

In responses, you can often find the following problems:

1) the failure of the TNVD. Therefore, it is not recommended to acquire a version with the Fuel System of DEphi, which is very demanding on the quality of the fuel, and if you fill down poorly, it will die quickly. Recommended to take with Siemens (Continental). Delphi go on versions with a small amount of horsepower. Before buying, specify this moment.

Still with the Siemens system usually go models with a 6-speed mechanical box Transmissions. Engines with 5-mortar usually from Delphi.

2) failure of the turbine. This occurs most often due to improper operation. As we know, the turbodiesel cannot be immediately jammed after the stop, and you need to give it a little work, for this there is a configured autorun system in alarms.

4) Beat connecting rod inserts. It happens if you do not change the oil during and lengthen the intervals of the replacement. Change every 10,000 km and such a problem should not arise.

As a result, I will say that before buying a car with a 1.5 DCI engine, it is necessary to carefully check not only the body, suspension, legal purity, but also the motor itself, how it works, its mistakes to scan, find out how often the oil changed, whether there were problems and so on . Often there are 5-7 year old megans with a mileage of 60-80 thousand, this, unfortunately, not always truth, mileage could twist. You can check it from the dealer, unless of course the mileage was not deleted from the car.

Purchasing a car with DCI should be regularly changed oil, filters, hinged equipment - In general, everything that will be needed, and choose a refueling, where you pour a really high-quality dielary.

And it's not necessary to say that this DVS is bad or good, since each instance has its own history and care, if we talk about used options.

For reference: It is installed on Renault Megan, Klio, Scenic, Dasia, Duster, Nissan Cascai, Tiid and other models.

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Engine K9K Turbo - with a superior, inline, liquid cooling, with four cylinders, with an ONS gas distribution mechanism.

Head block cylinder diesel engine Made of aluminum alloy.

Laying the head of the cylinder block is made of metal, making it more resistant to high temperatures and pressure.

The engine cylinder block mold from gray cast iron with already formed cylinder sleeves. In the bearing crankshaft, cast-iron covers included in the block, including bolts. In both parts of the bearings invested invested. Inserts have boring locks and lubricating grooves along the central circle.

The engine camshaft is installed in the bed of bearings, made in the body of the head, and fixed from the axial movement by the stubborn flanges.

The crankshaft rotates in the native bearings having thin-walled steel liners with an antifriction layer. The axial movement of the crankshaft is limited to two semicircles installed in the ducts bed of the middle indigenous bearing. Oil canals to bearings were transversely (diagonally).

The flywheel, cast from the cast iron, is set at the rear end of the crankshaft and is fixed with six bolts. On the flywheel pressed the gear rim for starting the engine starter.

Pistons are made of aluminum castings. In the bottom of the piston from the side of the combustion chamber, a recess with the guide edge was made, which ensures the vortex movement of the absorbable air and as a result of this very good mixture formation. Special cooling scheme ensures the cooling of the piston during the release tact. Friction B. piston group Reduced at the expense of graphite coverage of the piston skirt.

The piston fingers are installed in the pistons of the pistons with the gap and pressed with the tension in the top heads of the connectors, which are connected by their lower heads with rod crankshaft cranks through thin-walled liners, according to the design similar to the root. Due to high maximum pressure Cycle The diameter of the piston finger is increased.

Steel rods, forged, with a core of a foreign cross section. The connecting rod and its cover are made from a single workpiece and processed in one piece, after which the cover is swallowed from the connecting rod by special technology. The result is the most accurate fit of the covers to its connecting rod. At the same time, the installation of the cover to another connecting rod is unacceptable.

Combined lubrication system. Oil flow. Oil from oil Carter It is absorbed by the oil pump, passes through the oil filter and is fed under pressure to the engine. The oil pump with an overpressure valve is driven by a roller chain from a crankshaft sprocket. Under crankshaft The engine is an oil reflective shield that prevents rapid overflow of oil. The engine of the aluminum alloy engine is combined with the front and back covers and are attached to the engine cylinder block.

Oil heat exchanger 6 and oil filter 3 are also embedded in the lubrication system (Fig. 5). In the housing oil filter An overpressure valve is also enshrined, providing the ability to reverse oil reversal. Oil filter is equipped with a replaceable paper filtering element.

Motor cooling system sealed, with expansion Bachkom.Consists of a cooling shirt made in casting and surrounding cylinders in the block, combustion chambers and gas channels in the cylinder head. Forced cooling fluid circulation provides a centrifugal water pump with a crankshaft drive with a drive belt auxiliary aggregates. To maintain normal operating temperature The cooling fluid in the cooling system is set by a thermostat that overlaps big circle Systems with an immentable engine and low cooling fluid temperature.

Turbocharging system and recycling of exhaust gases. The outlet collector is attached to the flange of turbocharger nuts. The turbocharger serves to increase air pressure using a turbine, which is driven by the exhaust gases. Turbine bearings lubrication included in general System Engine lubricants.

The turbocharging system is supplemented by the recycling system of exhaust gases. The amount of exhaust gas supplied to the system is regulated by an electromagnetic valve of the recycling of exhaust gases, the cone-shaped pusher changes the cross section of the bypass with different valve position.

Supply system. In the cylinders of the diesel engine when the piston moves, clean air is absorbed. During the compression stroke, the pressure in the cylinder increases sharply, while the temperature in it becomes higher than the temperature of the ignition of diesel fuel. If the piston is in front of the NTC, then the cylinder is injected into the temperature heated to the temperature + 700-900˚C diesel fuelwhich is self-proposal, so the spark plugs are not required.

However, when the engine is started after a long downtime (cold), especially if the air temperature is low, simple compression is often not enough to ignite the combustible mixture. For this occasion, the combustion candles are installed in the combustion chamber, which are located so that the jet of fuel from the sprayer of the nozzle falls into the hot tip of the candle and flammified.

Incandescent candles are automatically turned on at the time directly preceding the inclusion of the starter. At the same time, the instrument combinations include the alarm 9 (see Fig. 7), and the incandescent candles begin to heat up to high temperatures. The main goal of the heating of candles is confident ignition of fuel injected into the cylinder. After heating the candle to the required temperature (usually takes a few seconds) the signaling device goes out, and the engine can be allowed. Typically, the signaling device goes out the faster, the higher the temperature of the engine. Immediately before starting the engine (or most often soon after it), incandescent candles are disconnected. In most modern engines they can continue to work up to several minutes after starting to reduce the level harmful emissions In the atmosphere when working with a cold engine, as well as to stabilize the combustion process, not completely warm engine. Then the flow of current on the candle stops.

Thus, from the proper operation of the incandescent candles, the launch of a diesel engine and its further work will be directly dependent.

The 1,5-liter DCI turbodiesel from Renault (K9K designation) appeared in 2000 and has been produced more than 10 years since then. Of course, for all this time, the motor has repeatedly modernized. This power unit survived the change of fuel systems from three manufacturers. Initially, Motor K9K was equipped with a system COMMON RAIL. From Delphi, then there are versions with the fuel system from Siemens and in the most recent generations - with injection from Continental (essentially it is the same Siemens, but with the Continental logo, which has acquired the VDO Automotive division from Siemens).

The 1.5 DCI engine has a number of typical "sores", but the presence of some of them depends on the manufacturer fuel system. So, in about September 2004, the K9K engine was equipped with an exclusively fuel system Delphi. Such motors in their designation have an index to 728 inclusive, as well as 830 and 834, and their power does not exceed 105 hp. The DELRHI fuel system is more demanding on the quality of the fuel, but in repair all its components are cheaper. This fuel system needs good care is needed, only the original fuel filter should be installed for its trouble-free operation. But the most important thing is to feed it only with high-quality diesel fuel. Due to poor-quality or "dry" diesel fuel (and all the rubber components are lubricated by the fuel) and even more so because of the water content in fuel or short-term trusting of the fuel system Delphi may begin to "drive a chips" due to, which subsequently applies to The entire fuel system. The chips are formed in a pair "Rotor TNVD - Shaft Rollers". As a result, nozzles and pump itself can be released. In addition to the formation of chips, literally poisoning the entire fuel system, the performance of the TNVD falls: it ceases to supply fuel under the starting pressure. Also a weak injection site from DEKPHI are the check valves of the nozzles, which are excessively poured fuel to the return fuel line. Because of this, problems can occur with the start of the engine.

The advantage of the DELRHI fuel system, in addition to maintainability and relatively low repair cost, is the use of accelerometer, thanks to which the injection is adapted to the natural wear of the nozzles. This feature allows you to change and put nozzles without registration, pull and change the valve. By the way, the new Delphi nozzle for 1.5 DCI K9K motor will cost 500 rubles.

By 2005, the 1.5 DCI K9K motor was upgraded. He has changed the head of the cylinder block, crankshaft and piston, and the power rose - in the most powerful version Righting the motor reaches from 106 to 110 hp. For fuel injection into the cylinders of such motors, the CommonRail system from Siemens is responsible. Modernized engines Received indexes 732, 764, 780, 804, 832, 836. Powerful 1.5-liter DCI diesel engines with fuel Siemens can be identified by the presence of a 6-speed MCP, while all the variants of this engine with fuel from Delphi worked as a pair with 5- Step MCP. And if you look into the pumproom space and consider feedback channels of the fuel, then Delphi can be recognized by top-containers, and Siemens - on the emerging side.

Siemens fuel system is definitely more reliable and characteristic weaknesses has no. If problems with it happen, then only because of a significant run. The most common problem with the Siemens fuel system is associated with the malfunction of the pumping pump built directly in the TNVD. Low productivity "swap" causes its excessive wear. As a result, the TNLD does not receive a sufficient amount of fuel and works with deviations from the norm, which immediately responds to the engine performance.

Siemens fuel system (or later Continental) uses exclusively piezoelectric nozzles. They are unpretentious and easily serve 200,000 km and even more. However, they cannot be repaired: it is implied only full replacement. You can put both new (about 400-700 rubles per piece) nozzles and "b / ear" (200-400 rubles).

In rare cases of fuel system malfunctions can lead to 1.5 DCI K9K motor death. Because of the "pillings", nozzles can ruin pistons. However, the most common cause of the total drill of the K9K motor is the bulk of connecting rod liners. The fact is that connecting rod liners here are short-lived and experience heavy loads. As natural wear, the gap is increased between the neck of the shaft and the liner, through which the oil, without meeting sufficient resistance, is simply merged into the pallet, without lubricating loading parts. As a result, the wear of the liners accelerates, which will soon lead to them. The engine caught due to the grinding is often changed to the contract - it is cheaper and faster. average cost Contract motor 1.5 DCI varies from 1000 to 2000 rubles.

To avoid a flap of liners, their preventive replacement is recommended every 60,000 km. A motor oil for a 1.5 DCI K9K motor oil should use only the appropriate tolerances of the manufacturer. It is important to know that the car needs to immediately change not only all consumables, but also connecting rods from Europe. In Europe, the interservice interval of this motor reaches 30,000 km, which is not at all for the benefit of the inserts. By the way, when replacing oil on this engine It is recommended to fill new filter Freshly oil: it will exclude short-term oil starvation of rubbing parts of the engine.

Cut the service life of 1.5 DCI K9K can also be faulty oil filter valves: due to them, with a non-working motor, the oil is not retained in rubbing parts and merges into the pallet. Consequently, when starting the engine, a few seconds literally works "on dry". Also low oil pressure in this force aggregate may be associated with a weakened spring reduction valve Oil pump. Make an approximate opinion on the state of oil pressure in the engine 1.5 DCI K9K can be on the light bulb on the indicator on dashboard: If after at least half an hour of downtime goes out instantly after starting the engine, the oil pressure is most likely in order. However, in any case, prophylactic work on the replacement of connecting rod liners should not be postponed.

In general, due to these most liners, the entire engine suffers. After all, in friction, the chips is formed, which oil spreads over the entire motor. So, in particular, only because of this chips "dies" by the turbocharger of the 1,5 DCI K9K motor. The Turbines of the company KKK, which now belongs to an even larger BorgWarner corporation. Motor turbine 1.5 DCI K9K has several executions, but they are all reliable and do not have constructive flaws. However, such turbines break. The reason, as a rule, is one: the fine chips fall into the oil film on the bearing sleeves of the rotor. Here, with huge speeds of rotation of the rotor, the metal on its surface is flared, the smallest imbalance is formed, which after a while breaks the turbine seals. Also, the engine turbines of 1.5 DCI K9K fails due to the use of incorrect motor oil (unsuitable tolerances or viscosity) or due to an increase in the intervals of its replacement.

Powerful modifications of the 1.5 DCI K9K engine are equipped with a two-mask flywheel and a diesel filter (FAP), which may require replacement - they are simply not refundable.

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