The location of a huge number of automotive amateurs has already won small turbodiesels. From them key advantages It is possible to highlight a high degree of efficiency, which can be placed in comparison with more volumetric fellow and optimal cost. Renault became one of the first automotive factoriesthat have begun to produce small diesel engines, the development of a fairly known 1.5 DCI has been completed together with Nissan. To date, a lot of cars are equipped with this engine.
The smallest of the line of diesel engines is a power unit, having the designation K9K, it appeared on the market in distant 2001. 4-Cylinder 8-Miklapan Motor with a fuel supply system " COMMON RAIL.»And the turbocharging was proposed in several variations, the capacity of which ranged from 64 to 110" horses ". The key differences between the models are in the equipment flywheel, turbocharger, nozzles, and so on. The advantages of the unit include a fairly high power degree and a small fuel consumption - approximately 6 liters per 100 kilometers.
Motor 1.5 DCI is often used in auto, Dacia and Renault. From 2003 to 2010 Small SUV Suzuki Jimny. The Turbodiesel was completed, and after Renault began working with Mercedes, new A-class models and Citan van were also equipped with this engine.
The list of problems that pursued 1.5 DCI is quite large. One of the most common and serious is the malfunction of the power system. As usual, this is associated with the use of low-quality fuel, which the French diesel is not able to undergo. In particular, it is related to the motors with Delphi nozzles that can withstand 10 thousand kilometers on a base diesel. One nozzle is approximately 8-12 thousand rubles. In models with "normal" nozzles and a simple system, you can save considerably by trying to restore their work. If the nozzles of piezoelectric - will help exclusively replacement.
At some part of copies, the turbocharger can cause unpleasant moments after the sixty-thousand mileage. Turbochargers were used by 2 species - with a variable and fixed geometry.
It often happens the path of pistons and turning into the inserts due to incorrectly functioning nozzles. In addition, it is possible to face typical malfunctions of the exhaust gas recycling valve for EGR. On versions that are somewhat more powerful, there are confusion with a 2-khmass flywheel. Another standard problem for a diesel engine is a diesel filter that may well require tremendous costs. Regarding the price of a new better, it is better not to say, but praying, so that they have not disturbed the attitude towards him. Sometimes difficulties causes electronics of motor management: the valve position sensors and pressure pressure are very vulnerable.
How can I notice from the review possible problems With 1.5 DCI a lot. But, most of them are associated with incorrect use. To eradicate in the future of impressive and unnecessary expenses, owners diesel cars The shortcomings should be compensated for their own knowledge, which were due to exploitation of exclusively undead gasoline engines.
Many also consider 1.5 DCI risky enough. But it is necessary to recall that the preferential part of car owners with this turbodiesel is exclusively satisfied with their own acquisition, and wish to see the 1.5 DCI engine under the hood of its iron "horse" in the future.
Almost all diesel engines are recognized by defective, that is, they have a so-called lack of closely related to engine oil. Increased maintenance intervals have become another marketing tool, car manufacturers. Hence, there are problems inherent in diesel engines. The best example of such problems can be called early DCI models design Renault. In the article consider renault engine 1.5 DCI, his typical malfunctionsas well as instructions for use.
- 4-cylinder diesel engine.
- 8-valve block head.
- Injection Common Rail.
- Working volume 1461 cm3.
- Turbo.
- Timing the timing belt.
- Economical ( real flow Fuel 5-6 l / 100 km).
- For small and medium class cars.
DESCRIPTION
The compact and small 1.5 DCI engine refers to the K9K code values \u200b\u200bfamily (straight 4-turbated engines, jointly developed by Nissan and Renault companies). Debuted in the automotive market in 2001.
The four-cylinder turbocharge motor was made under the Common-Rail injection system and comes in several power options (from 64-110 liters. P.) Depending on the auxiliary equipment.
The benefits of the motor should be attributed low flow diesel fuel (on average 6 liters per 100 km), as well as in the case of stronger power options, really decent characteristics. The motor works great on small small and medium-sized cars. At the same time, contrary to popular belief, it can be cheap.
With the advent of 1.5 DCI, Renault has filled out a niche of ever-growing demand for small, economical and eco-friendly diesel units. Today, their total market share is significantly big. According to Renault, only in 2012, sold 9 million instances of 1.5 DCI unit. French diesel can be found not only under the hood Renault in models Twingo, Clio, Thalia, Modus, Megane, Fluence, Scenic, Kangoo, Captur. As a competitor, German 1.6 TDI was widely used in other brands Dacię, Nissan, Mercedes, Suzuki, Infiniti, Mahindrę!
Specifications
The 1.5 DCI Engine K9K family is produced in various power options. Weak power engines (65 liters) are not equipped with costly auxiliary equipment (, turbo and intercooler). The fuel injection system comes with Delphi corporation, operates at a pressure of 1400 bar.
The engine capacity (100 liters s.) Is equipped with a two-masted flywheel and Turbo with a variable geometry. The injection pressure was raised to 1600 bar, and the pressure of 1.25 bar. Modified design crankshaft and heads.
For the entire production period, the engine is constantly being upgraded, which naturally affects the selection of spare parts for it ( accessories are selected by Vin number Specific type of motor node ).
In 2010, the production of 1.5 DCI new generation engines were launched. Modernization has affected the change in problem nodes (recycling of exhaust gases, turbocharger, oil pump and fuel injection system (Siemens applies)). New engines are adapted for the Start-Stop system, and the operational resource reached 300 thousand km. trouble-free run. 1.5 DCI are valued by users for low fuel consumption and good dynamics. Unfortunately, there are also several drawbacks inherent in diesel nodes.
Operation and typical faults
1.5 DCI engine is difficult to unequivocally evaluate in terms of durability. So for example, separate specimens without any special problems passed 150-200 thousand km., And others, after a run of 50-70 thousand km., Signals appear about the first serious problemsoh. The reason for the ambiguous operational resource is a fragile design, and therefore the sensitivity of the motor to the conditions and method of use.
Supply system
One of the most serious and at the same time common breakdowns is the malfunction of the power system, which is usually associated with the perception of the French engine on low-quality fuel. The accident is largely affected by the type of system used. This is especially true of motors with Delphi production - nozzles in the worst case withstand only 10 thousand km., (Require full recovery after running 100 thousand km.).
Initially, the components responsible for injection delivered Delphi, later, Siemens (you can distinguish appearance Pump: Delphi has a round shape, Siemens in the shape of a star). Most problems caused the engine 2001-2005 release, and above all, due installed system Power supply Delphi.Low fuel quality could very quickly damage the mechanism so that the accuracy of dosing of diesel fuel was lost (mainly after 60 thousand km of mileage, nozzles are replaced).
Since 2006, DCI has been finalized (instead of delicate devices Delphi began to establish much more strong Siemens nutrition systems). Now, with proper use and maintenance, do not create special problems (performance parameters have improved, fuel consumption decreased). Modern nozzles are able to withstand even 250 thousand mileage kilometers with almost no mechanic intervention.
The lifespan of Delphi nozzles installed in 1.5 DCI can be effectively increased. Recommendations are simple - every 30 thousand kilometers need to clean the nozzles, and every 60,000 kilometers a high pressure pump.
Inlet system
Extremely important is the inlet system diesel engine. The condition of the air filter significantly affects fuel consumption and, therefore, Efficiency engine And clean exhaust gases. Manufacturers recommend replacing the air filter every 40-60 thousand km, but it is best to do it every two oil replacement (20-30 thousand km).
Once every two years, it is necessary to charge the mechanics overview of the entire intake manifold (clean it, with the valve of the exhaust recycling system and the flow meter inclusive).
Turbocharger
Turbocompressors are considered quite successful. Depending on the version, you can meet a turbine with a fixed or variable geometry. In some samples, after 60 thousand runs start (" take the oil "). Malfunctions most often occur due to improper operation.
Be sure to keep track of the state of rubber pipes ("input-output" from the turbine and intercooler). Their depressurization causes a decrease in air flow, thereby significantly affects fuel consumption and the condition of the entire engine. Large leaks cause a noticeable reduction in power.
What influence has automotive oil on the RENAULT 1.5 DCI engine
Cases of the burnout of the pistons (due to poorly working nozzles), turning rolling inserts or in the worst case, the crankshaft jam. Malfunction Most often occurs when running about 150 thousand km. This is the result of reducing the performance of the oil pump and the use of too long runs between oil changes.
The main principle in the operation of diesel engines is a regular oil replacement for at least once a year or every 10 thousand km. Maximum mileage on one oil can be increased to 15 thousand km. But, exploiting an intense car, or when operating it on short distances (often including and turning off the engine), it is worth further cutting the oil replacement to 7-8 thousand kilometers.
The fresh oil, the less dirt falls into the interacting elements of the engine and the exhaust gases become cleaner (they can significantly reduce or extend the life of the particulate filter, depending on their purity). The oil should be exactly the same as recommended by a specialized designer for concrete Engine And, preferably good quality (here it is worth believing manufacturers). This is especially important for diesel engines equipped with solid particle filter (DPF). It is advisable to apply, like "Low Saps".
Oil control
Motor oils in cars with 1.5 DCI diesel engines must also be controlled regularly. It is best to make a minimum every 2-3 thousand km, or once a week. Checking the oil level is very important in engines with solid particle filters. If the oil level has risen more than a maximum (unsuccessful filter regeneration process) it is necessary to replace the oil to a new one, otherwise such an oil will not provide proper engine lubrication.
In 1.5 DCI it is worth moving to the replacement of oil every 10 thousand km. And the timing set every 80 thousand. As a rule, many mechanics involves a strict check of the block when running 140-160 thousand km.
Engine support cushions
It may seem that this is not related to the operation of the engine, but after run 150 thousand km., At least once a year we recommend checking and, if necessary, replace the pillows on which the Renault 1.5 DCI engine is hanging with a gearbox. Damaged pillows create large vibrations that affect the service life of the power unit as a whole.
Outcome
In retrospect, it can be said that the total durability of the 1.5 DCI motor durability is not so bad, although this engine cannot be attributed to a successful option. Purchase by secondary market With a mileage of more than 200 thousand km., already conjugate with great risk. Mechanics recommend that it is best to stop your choice on copies released after 2012. Then the majority of flaws were eliminated, therefore, the operation of the car becomes less troublesome. Or as an alternative to use1.9 DCI version with sustainability potential of more than 500,000 km.
Popular models with 1.5 DCI
- Dacia Logan. Since 2004 - (68 and 86 l.) Without a DPF filter.
- Dacia Duster. Since 2010 - (86 and 90 l.) With DPF filter.
- Nissan Micra K12. Since 2002 - preferably with a version (82 l. p.).
- Renault Clio II. Since 2001. / CLIO III Since 2005 - version (65 and 86 liters.).
- Renault Megane/ Scenic III, Since 2002 - the best version is best (86 l.).
After in 1999, it was created and launched into a series of flagship line gasoline engines Renault-Nissan - K4M engine, in front of the French-Japanese designer tandem, the task of updating the diesel power units. According to the results of such cooperation, since 2001, the production of 1,5-liter diesel engine of the K9K series is launched on Renault-Nissan conveyors. Over the past 15 years, this motor was installed (and continues to be installed) passenger cars Renault (Duster, Fluence, Twingo, Clio, Scenic, Kangoo, Megane), Nissan (Note, Almera, Juke, Quashkai), Dacia (Logan, Sandero, Dokker), Suziki (Jimny), Mercedes (in A and B class) . The K9K engine is the most massive diesel engine Renault Nissan in the 2000s.
Structurally, the K9K engine is a four-cylinder row power unit equipped with a high-pressure fuel injection system (Common Rail), with a turbocharger and a common fuel frame. Any special design "delights" the creators of this motor did not use, making a classical layout at a time-tested time. As a result, the automaker received a "basic" engine, easily adapted under specific model or laying the car by using different hinged equipment and electronic system Control. There are several dozen K9K engine modifications for Renault cars, Nissan, Mercedes, Dakia and Suzuki. To determine for which machine it was created by one or another power unit, which is its power characteristics and features of the attached equipment used, in three numbers that follows the engine marking. For example, in our online store you can buy a Renault engine K9KJ836. This power unit is removed from car Renault. Megane 3 with 6 step mechanic and has a power of 110 hp Similarly, other Renault motors are identified.
Major malfunctions and engine resource K9K 1.5 DCI
The accumulated 15-year experience of operating the K9k engines allows to accurately determine the resource and the margin of the strength of this power unit. Subject to regulations maintenance (by the factory) these motors work without overhaul About 300 thousand kilometers, and the first 150 thousand do not deliver serious trouble with their owners. But in practice, this figure can be very different both in the greater and in a smaller side. The fact is that K9K engines are very sensitive to the quality of the oil used. Therefore, if you use oil, differing in its characteristics from the factory recommendations, or change it less often than 1 time per 10,000 km of run (according to the recommendations of the plant 15 and even 20 thousand km), thereby cut the life expectancy of your motor. The problems with the lubrication system usually lead on K9K engines to turning the connecting rod inserts, and therefore, to the guaranteed overhaul.
Another big problem with the owners of cars equipped with K9K engines is the lack of experienced specialists in the Common Rail fuel system. That is, there are such specialists, but only in large cities and, as a rule, they work by appointment. In other words, if you have started problems with the fuel system (and considering the quality of Russian fuel, such problems may arise from you at any time), then you will have to either wait for your turn to repair, or contact the service without warranty on the quality of work performed. The design features of the K9K engine fuel system are as follows that the breakdown or incorrect operation of one of the elements of the system, in most cases, lead to failure and other vital for the operation of the engine elements. For example, incorrectly operating engine nozzles K9K, can "bring" your motor even before burning the pistons. So, if you have on dashboard There are messages about malfunctions with the engine, it is not necessary to regularly erase the error from the computer's memory, it is much wiser to immediately contact a qualified service for detailed diagnostics and troubleshooting.
Well, of course, it is very important to follow the condition of the engine turbine K9K Renault. With incorrect circulation, the turbine may require attention after 60,000 km of run. And the cost of this part is very high and on average is 20-25 thousand rubles for used parts and 45-70 thousand rubles for the new original. By the way, the cost of all components of the K9k fuel system is high enough. So, used the nozzles in our online store there are 10 thousand rubles per piece, the TNVD K9K - 16 thousand rubles, the USR valve - 6 thousand rubles and so on. The cost of new original detailsNaturally, several times above.
The owners of a car equipped with this power unit can be recommended as follows:
- carefully choose and change the engine oil in a timely manner (it is better not less than 1 time by 10 thousand km of run);
- refuel only with high-quality fuel, in no case fill in the "left" tank diesel fuelor fuel at refueling of dubious brands;
- regularly (preferably with each oil change) change the fuel filter - for you it is the most important element savings on future repair. Some car owners even change the Filter Filter Filter with more thin cleaning;
- change air filter every 30000 run;
- if you appear on the dashboard messages about the problems with the engine immediately refer to the diagnosis.
- do not save and do not tighten the repair. Turbine incorrectly works, and you do not rush to replace it? - Then expect high costs as well, on the nozzles and fill.
Despite the apparent abundance of serious Renault K9K engine problems, it should be noted that the absolute majority typical breakdowns It is primarily due to the incorrect operation of this power unit. The motor itself has a sufficient stock turn, but is designed for regular and attentive maintenance, visiting a qualified specialist and accurate diagnostics.
20046 07.11.2017The 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, the Motor K9K was equipped with the Common Rail system from Delphi, then there were versions with the fuel system from Siemens and in the most recent generations - with injection from Continental (in fact it is the same Siemens, but with the Continental logo, which has acquired a VDO Automotive division from Siemens ").
The 1.5 DCI engine has a series of typical "sores", but the presence of some of them depends on the manufacturer of the 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 Need good care is needed, for its trouble-free work, only the original fuel filter should be put. 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. Upgraded motors 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 paired with 5-speed MCP. And if you look into podcast space and consider feedback channels of fuel, Delphi can be recognized by top-containers from above, 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 frequent cause Total drivers of the K9K motor is the bulk of connecting rods. 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 a new filter fresh oil: This will exclude short-term oil starvation of rubber parts of the engine.
Reduce the service life of 1.5 DCI K9K can and faulty valve oil filter: Because of them, with a non-working motor, the oil is not kept 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 It may be associated with a weakened spring reduction valve of the oil pump. Create an approximate view about the state of oil pressure in the engine 1.5 DCI K9K can be on the light bulb on the dashboard: if after at least half an hour of downtime goes out instantly after the engine is started, then 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 1.5 DCI K9K engine are equipped with a two-stage flywheel and summer filter (FAP) that may require replacement - they are simply not refundable.
For your car you can choose on our site
Diesel engines have a reputation as reliable and endless motors in comparison with gasoline. But all this comes down to the elementary rules of operation and maintenance. In the list of problem engines, a 1.5 DCI diesel engine, as well known under the technical "nickname" engine K9K 1.5 DCI can become for someone problematic, and for another owner Renault-Nissan carefree.
For the first time, the Renault engine K9K 1.5 DCI came off the conveyor in 2001.
1.5 DCI K9K found applied in most small models Renault., Dacia, as well as in several Nissan models. The most serious problem of the engine 1.5 DCI is considered to be tental inserts. The problem most often happens when running more than 150 thousand km. Repair costs may be higher than buying a used engine.
The reason for such a problem occurs when an elemental delay in replacing the oil, recommended by 15 thousand on an orginal-quality oil, but not more.
Practice says that it is better to change the oil on 10 thousand and operate only on synthetics with RENAULT RN0700 or RN0710 tolerances for K9K 1.5 DCI engines. , Pledge of engine life.
Many are afraid of the Common Rail fuel system, and this fuel system is afraid of diesel fuel from low-quality locomotive. Yes, there is something afraid, but there are ways to warn ourselves from chips in an edge or replacement of nozzles in 10 thousand for $ 250 / pc. Many still love these motors for the trap and the economical consumption of 1.5 DCI engines.
Installing Stanadyne separator with cleaning filters in 5 or 10 microns, in comparison with the usual fuel filter, bandwidth is approximately 35-40 microns.
I know those who just threw a native filter, put a tee on the hoses and once every 15-20 thousand changes the separator filter, then it comes out, even cheaper. Also, on the last, I can add that failures in the system or charge, camshaft or crankshaft sensors may appear.
Period occurrence of malfunction at the engine K9K 1/5 DCI since 2001.
Models in which was installed / there is 1.5 DCI engine:
Renault: Kangoo, Clio, Thalia, Scenic, Captur, Laguna, Modus, Megane, Fluence, Twingo,
Dacia: Logan, Logan MCV, Duster, Sandero, Lodgy, Dokker.
Nissan: Note, Almera, Micra III, Qashqai, Juke, NV200 / Evalia,
Mercedes: A Klasa, B Klasa, Cla Klasa
