Thermal clearance in the castle of piston rings

The engine is the main part in any car. Thanks to him, the car is moving forward and electronics works. Therefore, it is so important that each element of the motor is in perfect condition. Otherwise, there is a risk that the car will stop in the middle of the road and refuses to start.

The main elements of the engine are cylinders. Pistons move in them, and on how well the work of the entire system depends on how well these details interact. That is why it is so important that the gap of the piston rings clearly stacked in the standard.

Attention! Especially high demands are presented to pistons, as they interact with inert gases.

In essence, inside the cylinders there is a microcus, which makes the pistons move in the right direction. As a result, the crankshaft is rotated and mechanical energy is produced.

Therefore, the gap of piston rings also affects the high temperature, which is the result of the reaction that occurs inside the cylinders. At least this is how the process proceeds into the engine.

Diesel and gasoline engine work

To better understand the value of the gap of the piston rings in the engine work, consider how the two most common systems work. In fact, the difference between them is not so large, at least in the structural plan.

The main difference is in the process of ignition. In diesel engines, it occurs due to the increase in pressure. As a result, the temperature grows, after which the nozzle is injected into the fuel inward, and the ignition comes by itself.

Attention! The fact is that the temperature of the ignition of diesel fuel is lower than that of gasoline.

The gasoline engine is arranged a little differently. Instead of nozzles, candles are installed at the top of the pistons, which serve as sparks. Naturally, with such a design, the normal clearance of piston rings is very important.

Attention! The efficiency of the diesel engine is higher than that of gasoline. It should also be noted that diesel units are much safer for ecology.

What is the gap of piston rings

Each DVS detail is exposed to high temperature. As a result, the expansion occurs. Due to this process, the initial parameters of the part are changing. To the greatest extent it affects the elements that close to each other.

Attention! The result of thermal expansion is that the space between parts of the mechanisms gradually disappears.

The disappearance of the thermal space negatively affects the gap of the piston rings. This in turn badly affects the work of the piston, which means that the entire engine. So that the whole system worked without interruptions after this parameter should be followed.

The heat gap of the piston rings is an important structural element that ensures normal operation of piston circles. So that it normally functioned in the groove should be enough space for free rotation. If the item is stuck, then the normal heat dissipation will have to forget.

Important! Another property of piston rings is to provide additional constructions.

What should be a gap

Rings in piston can be compression and oil perm.The main task of the first is the holding of burnt gases inside the cylinder. In turn, the oil consumers should remove excess oil from the walls.

Disposable piston rings. They have a small incision, which is called a gap. Thanks to him, the rim does not encourage when heating occurs. Moreover, this structural element contributes to the fact that the piston is most closely pressed against the walls of the cylinder.

Attention! To the cylinder and rings normally worked the heat space should be no more than 0.6 mm. The value also has the lower border. It cannot be less than 0.3 mm.

If the described range is not respected, the risk of damage to the cylinder and failure of the entire engine is great. Optimal for normal operation is considered oblique cut. Due to it, the pressure rendered on the wall is more uniform. This effect can be achieved due to thinner edges.

In most cases, amateur mechanics try to minimize the gap of piston rings. Therefore, the distance to the indicator is 0.2 mm. The result of excessive zeal is the bulbs on the rings and cylinders. Such deformations appear due to the fact that when heated space in the lock decreases. Because of this, there is an embarrassment into the wall of the cylinder.

The role of piston rings in engine operation

There are a number of conditions that guarantee the long exploitation of piston rings. In many respects, they depend on the characteristics of the gap. In order for the engine for a long time, the correct gap is needed, which helps in control of such parameters as:

1. Temperature. This parameter depends the rest of the system. If the temperature is too high, then the piston is melted in a few seconds.
2. Pressure. In this case, the piston rings play the role of seals. Of course, that without the right clearance, this function will be difficult to determine. In the occurrence of pressure, the circles are pressed to the plane of the cylinder. The correct gap allows the maximum consistently to distribute the pressure.
3. Oil supply. For this parameter, oil-giving piston rings are responsible. They have two jumpers. It is they who regulate the subservation of the substance in the right amount. Usually this parameter is set on an indicator of 1-2 mkm.With optimal feed, gasoline consumption is reduced.

With the correct placement of these parameters, the service life of each engine part increases several times. Piston rings and their gaps play a major role in their adjustment.

How to measure the gap of piston rings

At the first stage you need just visually inspect the item. It should not be cracks or any other defects. If you notice even a small mechanical damage to the item must be replaced with a new one.

Some preventive procedures will not prevent. The head of the piston needs to be cleaned from Nagara, while special attention should be paid to the grooves that are under rings. Only after these procedures can be processed to inspect the gap.

As the rings in the device are only three. For each exist their parameters:

• Upper compression 1-0.04-0.075 mm.
• Lower compression 2-0.03-0.065 mm.
• Masonry 3-0.02-0.055 mm.

When measurements, be extremely attentive. For each ring there is its optimal clearance size. For greater accuracy, use the micrometer. This is a device that allows you to measure all the parameters you need with the utmost accuracy. To do this, there are special probes that allow you to easily and quickly decrease the testimony from the grooves.

RESULTS

You can measure the gap of piston rings alone. To do this, it is enough to take a special device called a micrometer. Of course, you can take advantage of more primitive tools or even do it on the eye. But in this case, no accuracy can go about any accuracy. Although the approximate measurement should give you the basic concept of whether to replace it.