To achieve high efficient efficiency power plant The camshaft cam and the valve pusher must be tightly in contact with each other. On some cars, for example on Hyundai Solaris.This is ensured by adjusting thermal gaps. With the warming of the motor, they disappear due to the expansion of the parts. A number of engines, for example, VAZ 21124 or 21126, do not require interventions, because hydraulic compensators (GC) are installed in them.
Why arises the head of the GDG hydrocompensators to the cold: probable reasons
GK - detail inconspicuous. It is referred to as a hydraulic drive, if installed directly between the cam distribution Vala and the foot of the valve, i.e. Instead of the pusher. Hydropra can be seen in gas distribution mechanisms with rocker.Design and principle of operation of the hydraulic clearance compensator
It is impossible without knowing the basis of the functioning of the mechanism without knowing the basis of the functioning of the mechanism without knowing the nature of the stink of hydrocomathers. This item allows you to choose free gap at any engine temperature at any engine temperature.
Working moments are easier to disassemble on the design of a conventional hydrotrode. It includes primitive design elements:
- Plunger, one end of which is loosely contacted with the inner surface of the pusher, the other - contains a ball valve.
- Cylinder, on the wall of which the plunger is moving.
- An opening for the oil fence from the Channel Channel of the GBC.
The oilhemulsion enters through the cylinder head channel and the pusher in the pusher into the inner cavity of the plunger. Under the influence of fluid pressure, the ball overcomes the springs resistance and opens the path of the oil suite to the closed cavity of the cylinder.
Emulsion quickly fills the space and starts moving the plunger with a pusher up. At the time of reaching the thick fit of the hydrotrode to the cam, the cylinder cavity is filled to failure and the fluid moves the ball up, thus closing the ball valve.
Because of what the hydrocomathers on the cold
The hydraulic compensator will be silent to perform its function if the proper level, quality and pressure of lubrication are provided. In other cases there will be knocks. The time of their manifestation indicates malfunctions of various origins.
For your information. Quite often knocking "hydrics" in inexperienced owners, not aware, Automatic.
You can meet the knock of the hydraulic components on the cold for the following reasons:
- Poor-quality or dirty oil suite.
- Invalidly selected lubrication. Not recommended by the manufacturer of the testimony of cold and working viscosity leads to the fact that the oilmulcia is not pushing in an immentable state through micron channels and does not fill the working cavity of the hydrothels or hydraulic conserves.
- Contamination of Channel Channels GBC and GC. This leads to a decrease in the conduction of the holes, which makes it impossible to pushing the cold viscous oil through them.
- Mechanism wear. Damage to the ball valve or the surfaces of the plunger leads to the fact that the lubricant is constantly poured from the ledge space.
- Jumping a plunger pair due to excessive amounts of nagar in the assembly unit.
- Problems with pressure in the oil highway. May be caused by a malfunction of the oil pump or a slant oil filter.
Magnification or knock of hydraulic distribution mechanisms for hot: base for malfunction diagnostics
The nature of the functioning of the power plant that has reached the worker temperature modediffers from the cold state. Here and the consumption is smaller, and the elasticity is better. Yes, and the nature of the stool of the hydrotheraple can be different.
At idle
Provocate the noisy work of hydraulic compensators can the same factors that are relevant in the event of the appearance of the stuffs on the cold. Most often - it is a blockage of nagar products and wear of small holes and oils of the oil system. As a result, the oil pump cannot provide proper pressure to pass the lubricant by narrow sections.
However, the knock of hydrocomathers on the hot may occur for other reasons:
- Insufficient oil level in the system. The optimal lubrication level in the crankcase is measured after a 10-minute parking lot. The trace should be equal to the distance from Max and Min marks. Many drivers prefer to shift the volume of the oil suite towards the maximum mark, which meets the recommendations of many manufacturers.
- Enhanced dimensions seating Under the GC as a result of engine overheating.
In the process of driving
It also happens that hydraulic compensators are knocking on high revolutionsAnd at idle demonstrate silent operation at any temperature. It occurs for two reasons:
- Foaming of low-imulsion. Perhaps when overflow lubricating fluid: the level is above the maximum mark.
- Air suction by oil pump. Probably with an insufficient volume of the oil suite in the crankcase.
Often noise does not depend on the speed of rotation of the crankshaft. Then the masters with confidence are told about the occurrence of the gap between the cam and the pusher. The nature of its origin is determined after the disassembly of the GBC. This can be both damage to the contact surface and the sequeling of the hydrocompanator.
For your information. Not all hydromoduli can knock. The search for a defective unit is performed by moving the hydrotrode along the axis of the wooden wedge. If some compensator falls faster than others, it is worth removing and replaced, or clean.
Self removing the knob in the engine from the hydrocompensators without parsing: internal washing
An unpleasant cloak, accompanying the work of the hydrotherapler, does not arise unless. Indifferent attitude to the choice of lubrication, the use of fakes and products from budget segment leads to the formation of lacquer sediments and nagar in the canals oil system And on the surfaces of the hydroopor. Ignoring the factory recommendations also shortens the resource of compensatory parts.
Easy problem
Quickly eliminate the knock of hydrocompators or its elimination without paving the head of the cylinder block is possible only at the initial stage, when the malfunction only began to appear on the cold. If used high-quality oil, And it was regularly shown, and after extreme replacement, the GC was suddenly littered, it is necessary to urgently pour new lubricant and change the filter. It is likely that a fake canister came across.
Not sure as the preceding oils, and hydraulic compensators are just beginning to tapping - buy washing butter, for example, from LUKOIL, and rinse 15-20 minutes on "idle". Work on a new filter.
Launched case
Eliminate the knock of the hydraulic components on high speed without disassembling the engine is harder. Technology It is relevant here, but it does not always help. It all depends on the degree of contamination of the hydrocomathers.
In special cases, aggressive compositions in the form of pharmacy domexide come to the rescue. It is laundering the details of any degree of environmental. However, the method is not easy and demanding on the initial state of the power plant. In particular, inside there should not be painted parts and fragile plastic structural elements.
Definitely the best option There will be clean washing oil with preliminary preparation power aggregate. If it does not help, it is better to disassemble the CBC and by manual diagnostics to identify faulty GK. Next, remove them and clean, or change.
In extreme cases, special additives come to the rescue. They temporarily eliminate the malfunction by debugging the inevitable opening of the valve cover. WITH best side The additives from Liqui Moly and Xado showed themselves.
Short Help.
A suddenly emerged knock-chipsetting of the gas distribution mechanism on a cold engine and / or hot testimony about problems in the oil system. It rarely knocks timing due to wear or coding of the CC.
Insufficient oil level, poor-quality lubrication, focused channels, problems with oil pump, scored filter - All this affects the pressure in the oil system, to which the hydrotherapists are very sensitive. In the initial stages, subject to the long use of high-quality lubricating products, the fill of high-quality and the requirements of the manufacturer of the oil slightness are helped.
It is possible to solve the question without disassembling the power unit - by washing with washing oil. Aggressive formulations can be used in limited series of units, and the risk of scoring micron holes is great. Special adventures help to delay the opening of the GBC.
What do defective hydrocompensators lead to? Just as a reduction in service life, as well as they have a slow and destructive effect on the head of the cylinder block. We will not pre-upset you with information on the cost of repair of these nodes.
Video on how to check the hydraulic components:
Regarding the repair of hydraulic compensators. Establish you, try either to refer to qualified specialists. In principle, you can spend a diagnostic from the master and determine the cause of the fault. And if, for example, you only need to flush compensators, then you will quite cope with yourself. In the event that more complex repairs are required, we advise you to use the services of professionals. Because illiterate intervention can turn to you in the future than large repair costs. It is often much easier and more profitable to immediately contact a good service where the knowledgeable people will perform all the work.
P.S. Write to us in the comments, have you had to deal with knocking hydraulic compensators? And if so, then what was the reason and how you could eliminate it.
Almost all automotive engines The valve adjustment procedure occurs. The procedure for adjusting the valves, these are gaps between the valve and the pusher. On the engines where the thermal clearance of the valves is adjusted manually, it is necessary to do this with a certain frequency. For it, you need a certain skill, so engineers have come up with automatic adjustment of gaps. But there are problems with this technology - this is a knock of the hydraulic components about which today will be discussed.
The hydrocompensator is a device that allows you to automatically set the gap between the valve and the engine pusher. It is a metal cylinder in which the spring is located and check valve.
The principle of operation consists in changing the length of the cylinder of the hydrocompanator for the entire length of the gap in the timing. This device works from the reverse spring and oil pressure.
The hydrocompanator is not a cylindrical cylindrical device that consists of plungers, the reverse valve and spring.
The huge advantage of the hydrocompensators is that they automatically adjust the valve gaps and eliminate the car owner, from this procedure. But in addition to the prospects, there are also cons of this technology. The main one is a knock on the cold or hot in the event of a malfunction.
How the hydrocompensators are knocking
The knock of the hydraulic components resembles the base, very similar to the base of the non-stretched chain. It comes from the head of the cylinder block. From its top. The knock of compensators can manifest itself on the cold or hot, or is always present, depending on the wear of compensators.
As we know, the work of the hydrocomathers is directly related to the oil. When the engine is cold, the oil just did not get into the hydrocomathers, so the motor can characteristically troce. But after a short time, if there are no other prerequisites - the knock will disappear.
Very clearly, this symptom is observed on domestic classic motors that are installed in the Niva recently release. At one time, the company "VAZ" The best owners of these motors wrote a collective letter and demanded an revocable company.
Causes of the stuffing of hydrocompensators
To the main reasons of the hydrocket knocks include two malfunctions:
- mechanical part of the hydrocompensator
- engine oil to hydrokompensector
TO mechanical faults You can attribute:
- Development and wear of the plunger spring. Most often is natural wear, arises due to the fact that camshaft camshafts are left for the surface.
- Clogging of the hydrocomponnet. Namely blocking the valve that is responsible for the oil feed. In consequence of this malfunction, the hydrocompensator begins to shindle.
- Restressing. It occurs with insufficient oil supply to the mechanism.
- Nagar and contamination of the main elements of the hydrocompensator. It occurs when used non-quality oil or additives.
Fault oil supply to the hydrocompensector may be called:
- Fault oil filter.
- Low oil pressure
- Irregular viscosity oil or not that oil
- Overheating of the motor, as a result of which the oil loses its properties.
As stated earlier, the walls of the hydrocomathers are possible both on hot and cold.
When the motor is well warmed, and a distinct knock of hydrics appears which means that there are problems with oil. Maybe the oil has already lost its properties and requires replacement. Either the oil is filled, which is not suitable for the regulations to your motor. The variant of the closed oil filter is also not excluded.
Help in this case can replace the oil and oil filter. If the knock on the hot remains, it is necessary to digitate other engine elements. Perhaps the problem is in them.
As for the knock on the cold, it is not worried here, almost always this knock is not critical.
What if you knock the hydrocompensators?
First of all, you need to determine which hydrocompensator knocks. For motorists, it is not possible to determine which hydrocompensator is usually not difficult. Yes, you yourself can do it yourself. It's simple.
To do this, you need to remove valve cover. You will also need a device that is called a phonenadoscope.
Phonneoscope device with long needles on the end and headphones.
If a this device Not at hand, you can try to use a stethoscope. The essence, I think you have already understood, you need to listen to where the strongest thing knocks, so you can determine which hydrocompensator of the junk.
In case of detection of a faulty hydraulic component, you can try to eliminate the knock by cleaning. To do this, it should be disassembled and washed in diesel or kerosene. In some cases, it helps to eliminate the knock. If not, then alas will have to change. Their cost is not as large and it is better to do it as soon as possible, because otherwise the consequences may be sad.
How to check the hydrocompatinors
Check the hydraulic components are simple enough. The device in its structure is not complicated.
In order to find out the serviceability, you need to try to press the inside of the hydrocompanator (which is adjacent to the valve). If it is easily remembered, it means that the hydrocompensator is faulty, if not, then it means everything is in order.
Is it possible to ride with knocking compensators?
As mentioned earlier, run this malfunction It is impossible. Killed hydrocomathers, have a very negative impact on the entire drive of the gas distribution mechanism. It is worth repair, very not cheap. Also, the knocking of the hydraulic leads to a faster wear of all elements of the GBC.
Cons of hydrocompensators
In addition to all of the listed positive qualities This great technology, it has several significant minuses.
- Almost always the knock of the hydrocomathers on the cold engine.
- Hydrocompensators do not work well at high speed.
Changed the hydrocomathers and they still knock
A knock on new hydrocompeantors after replacement may not always be associated with their malfunction or marriage. As mentioned above, the operation of these devices depends on the oil. If new compensators are not filled with oil, then they will not be filled with some time.
Outcome
Undoubtedly, the technology of using hydrocompensators is very convenient. It uses many different manufacturers in engines for both budget and premium segment. But some still use technology manual adjustment Valves, such as Honda. This is due to the fact that their motors are highly engaged, and as we have previously said the hydrocompensation agents, and in the mechanism of gas distribution, it is trite enough space, since in most cases the VTEC branded technology is used and very little space for hydrocomathers.
If earlier, through a certain number of thousands of mileage kilometers, the car needed adjusting the engine valves, today, such a need for the joy of car owners, almost disappeared. AT modern engines internal combustion, for optimal intake and exhaust valves Answer hydrocompensators.
This is pretty simple deviceswhich, due to the pressure of the oil circulating inside the engine, provide the most optimal adjacent of the valves and their normal work, generally. However, the hydrocompensators have their own service life and moreover, they may be out of order, much earlier than should. And if at least one hydrocompensator begins to die, the knock is heard.
Why the hydrocompensators are knocking, and how to remove the moment when they have to be changed, we will now tell.
Internal device of the hydrocompensator: 1 - camshaft cams; 2 - recess in the body of the hydrocompensator; 3 - Plunger's sleeve; 4 - plunger; 5 - Spring valve plunger; 6 - Spring of the valve of the gas distribution mechanism; 7 - gap between camshaft camshaft and working surface hydrocompensator; 8 - Ball (plunger valve); nine - oil canal in the body of the hydrocompensator; 10 - Oil canal in the head of the cylinder block; 11 - Spring Plungir Couple; 12 - valve of the gas distribution mechanism.
And so that it can force the hydrocompensators, knocking:
- insufficient lubrication;
- low quality oil;
- development of its own resource;
Let us dwell at these points. With insufficient lubricant internal elements The hydrocompensator, in particular the plunger, springs and glasses, may occur not to planned friction, which leads to the accelerated wear of the hydrocompensator. Therefore, change the oil on time and follow its level. By the way, it will extend the service life of not only hydrocomathers, but also almost all nodes and parts of the motor.
The second moment is the quality of the oil. If the oil is dirty, then the channels on which it enters the hydrocompensator will be clogged. There is also a deterioration in the lubrication of the details of the compensator and the deterioration of its work, because this node, more precisely, its functioning is tied to the oil pressure, the standard pressure corresponding to the parameters laid down into the design. Accordingly, if the oil is clean, then the channels for which it circulates is quite passing and everything works as it should. If the oil flow is found in the oil flow, and other foreign onowners, the channels will be clogged. Hence the deterioration of oil circulation, hence the rash wear of the hydrocompensator, hence the violations in its work. And such violations, let it initially and imperceptibly, but are reflected at the operation of the engine, and they are reflected negatively.
And of course, no matter how good the oil is, how much it will not be, and sooner or later the details of the hydrocompensator will wear out. Meanwhile, when normal level And the quality of oil hydrocompensators go long enough, without any service and control over them.
What to do if the hydrocomathers are knocking
Since we have dealt with why compensators are knocking, let's talk about what to do the car owner when he heard a similar knock?
In general, there are no special alternatives here. You can of course rinse a compensator to clean the closed channels, but this is temporary, because if the knock appeared, it means that the backlash appeared. One way or another, but the hydrocompensators will need to be changed. And the multiple number, here is not a typo. As a rule, if he began to knock, at least one hydrocompensator is replaced by all such nodes. They work on one oil and if one was worn out, then others will follow very soon. Therefore, change all compensators without exception.
Hydrocompensators - good or evil
Often you have to hear that I used to go without unnecessary details and complications and did not spend so much money for a car as you have to spend today. But only those who are familiar with the valve adjustment procedure can speak, especially if the car travels often and long distances. Well, about the lucky owners of cars with gas installation, it is not necessary to speak at all. Moreover, even after adjusting the valves, the engine did not always work as smoothly and stable as it takes place, in the presence of hydrocomathers. As for the cost of replacement, the engine itself, sooner or later, will develop its resource, this is not a reason to abandon it.
), ensuring its performance by maintaining the optimal gap between the camshaft camshaft (or rocker) and its working surface.
The knock of the hydraulic components speaks of a malfunction, the elimination of which will allow to receive complete return from the engine.
It consists of:
- cases with special grooves and holes;
- plunger couple with spring and ball valve.
The top end of the car valve rod rests on the bottom of the plunger. That is, the compensator is an intermediate link between the valve and the cam shaft.
What's inside
The clearance adjustment occurs automatically. The principle of operation of the hydrocomathers is based on an insignificantly small oil compression ratio. At the moment when the holes are coincided (made specifically for the lubricant pass) in the head of the cylinder block and the compensator body, oil will go into it. Further, it will fall into the upper chamber of the plunger through the pier, and then, through the opened ball valve, fill the bottom chamber.
Since the oil is fed under pressure, the plunger is squeezed out, the pushing the compensator body is up until it flips into the cam. The cam cam flushing, presses on the hydrocomathers, which goes down. The holes overlap, the oil supply is stopped and the ball valve is closed.
The oil has the property of incipiency, therefore the fist force of the timing shaft is transmitted through the hydrocomponancetor car valve. It opens. The further stroke of the cam leads that the valve spring pushes it up, and it closes.
Some of the oil can be seeded through the side of the plunger ball seat in the opposite direction, increasing the clearance, but in the next cycle, when the oil pipe holes coincide again, the oil volume is replenished and the clearance is normalized.
The operation of the GDM leads to the development of the surface of the compensator, while the gap increases. Replenishing the volume of oil in the cycle again normalizes it. The thermal expansion of the parts also affects the gap, but here the hydrocompensator allows you to get rid of the extensive.
Knocking knot knock because the consequences are different
What are these devices convenient? What they perform their functions without requiring maintenance and special care.
You can not remember about them until a certain, specific knock of the hydraulic components is heard.
Moreover, it can only appear at start-up and as it warked to disappear, and may continue all the time. 
What happens when the hydrocompensators are knocking:
- the functioning of the plunger pair is terminated;
- burn valve heads with subsequent damage to the block head;
- there are noises in the engine, impede general diagnosis;
- the overclocking speaker worsens.
Why are the hydraulic components? Replies may be somewhat, depending on the circumstances. You must set the moment when the knock begins. It helps to clarify the situation.
If the knock of the hydraulic components is heard on the cold, that is, immediately after launch and continues until the motor is warmed, then the following may be the following:
- The plunger valve skips the oil when the engine is turned off.
- Narrowing oil-conductive channels pollutants. At the time of the start, the oil has a greater viscosity and does not go to the plunger, therefore the hydrocomathers are knocking on the cold. When heated, viscosity decreases and its penetrating ability increases.
- High viscosity oil. The knock disappears as the fluidity increases.
Such a phenomenon is not very critical, although you should not leave it without attention. Often "hydrics" are knocking only at the time of start. This is due to the fact that when stopping, a part of the engine valves freezes in the open position and the plunger valve "whips" some oil.
You should not count these sounds to the signs of malfunction. On the cold engine it is permissible. New hydrocomathers, knock on the start, because with long-term storage, the oil can be found.
Well, if the hydrocompensators are knocking on a hot? Although the question is set somewhat correctly. We will deal with what the knock appears when the engine starts and does not stop as heated. In this case, as in the previous one probable reasons several:
- Butter bad quality Initially, or long ago did not change. The knock, most often, stops after replacing the oil.
- Malfunction of the hydrocompensator itself.
- Pollution Oil filter.
- The knock of the hydraulic components on the hot occurs if oil pump Does not develop the necessary pressure.
There is another reason that, for some reason, manifests itself on the prior. The knock in compensators appears after the 5W40 oil replacement at 0W40.
Take action
So, the hydrocompensators are knocking, what to do? Do not panic. A similar phenomenon has not yet triggered a car before excluding from the transportation process.
The functioning of this important part is directly related to the lubrication system. If the hydrocompensators were careisred, the likelihood that the oil lost the initial characteristics is large enough.
Do not immediately think about disassembling the motor. First of all to eliminate knock, change oil and filter. After replacing, when starting, do not shiver the hydrocomatomators from the knob, during the drain of oil, it will leave both of them, and plungers will be filled when the oil pump is started.
If it did not help, then it is necessary to find out what hydrocompensator knocks. There is a question how to determine the one that needs to be changed? For example, VAZ 2112 16 valves, how to find out what does not function?
To do this, you need to put the camshaft camshaft (rocker) so that it does not interfere and try to press the compensator in the compensator. Competitive sale if a significant effort is attached, faulty will go down easily. It must be removed.
How to check the hydraulic components without disassembly? Faulty can be revealed on the engine running.
The place of its installation is determined using the phonenendoscope. Some craftsmen make a fixture using a metal rod and a resonator of aluminum cans. Experienced motorists find just on rumor. Further, the cause of the bunch of hydrocompensators is eliminated.
After detecting faulty parts, some car owners remove them, in order to remove the pollutants from the plunger by disassembling and washing. Others go to their removal and replacement. Often, after these manipulations, it is possible to eliminate the knock only for a while.
The analysis and analysis of the periodicity of the repair of these nodes suggests that their wear and operating conditions are approximately the same, which means the state too. Therefore, it is recommended to change the hydraulic components with the kit.
