RU2727285C1 - Method for cleaning combustion chamber of internal combustion engine - Google Patents

Abstract

FIELD: engine building.SUBSTANCE: invention relates to maintenance of internal combustion engines. Method of cleaning the combustion chamber of the internal combustion engine envisages supply of cleaning liquid in the form of foam into each of cylinders of the idle cooled engine. Fluid is held for 30 minutes, after which suction fluid is extracted from each cylinder. Cleaning liquid used is an aqueous solution of low-molecular and high-molecular amines, anionic surfactants and esters, with the following ratio of ingredients in the claimed liquid: low-molecular amines of general formula: R-N-(R)(R), where R=H, CH, CHO, CHO, CH; R=H; CH; CHO, R=H; CH; CHO – is 2–10 %; high-molecular amines of general formula: RN(R)(R), where Ris a hydrocarbon residue of a mixture of limiting and unsaturated fatty acids containing from 12 to 24 carbon atoms, R=H; CH, R=H; CH– makes 5–20 %; anionic surfactants of general formula: RX, where R is a hydrocarbon residue of a mixture of limiting and unsaturated fatty acids containing 10 to 24 carbon atoms; X=-COOY; -OSO3Y; -OCH2COOY; -O(CH2CH2)n-OSO3Y, -OPO3Y2, -C6H4SO3Y, -OC(O)CH2CH(SO3Y)COOY, where Y=H, Na, K, NH4+ – makes 5–20 %; esters of general formula R-O-R, where Ris a hydrocarbon radical – CHat n=1-14, a R=H; CH3; C2H5O; CHO; – makes 15–30 %; deionised water is up to 100 % (rest).EFFECT: technical result consists in effective cleaning of cylinder-piston group, with elimination of effect on paint layer of oil pan.1 cl, 2 tbl, 2 dwg

Description

The invention relates to the maintenance of internal combustion engines of automotive vehicles for various purposes, in particular to cleaning parts of the cylinder-piston group from carbon deposits.

Known professional cleaner of the combustion chamber and valves from solid deposits ProTec Carbon X, consisting of two components, while the component K1 is a cleaning foam, a specially developed highly effective formula, which allows you to dissolve and remove all contaminants in the engine and combustion chamber. Component K2 - neutralizer - causes a chemical reaction that liquefies the previously introduced cleaning foam (K1) and binds the dissolved contaminants. With the Carbon X Extractor, the resulting emulsion and dissolved deposits can be safely removed from the combustion chamber. K2 has highly effective lubricating additives with extremely high adhesion (extreme pressure additives) (see https://kupi-gzox-bg-109.ru/product/protec-carbon-x/ published September 01, 2018).

The known composition, according to its developers, increases the compression and helps to clean the valves and combustion chamber without disassembling the engine.

Method of using a known composition.

Remove the spark plug or injector and insert the probe into the combustion chamber through the hole formed. Component K1 is introduced into the combustion chamber through a probe, which, when introduced, increases in volume and expands, thereby penetrating into the inlet and outlet channels (if the valves are open). As soon as the foam begins to come out of the hole, stop feeding and leave for 20-30 minutes. After using K1, insert the K2 probe and through the same hole, supply the K2 component for 4-6 seconds. The K2 component reacts with the K1 foam, dissolving it to facilitate its removal and to remove dissolved deposits (about 4-5 minutes). If necessary, the K2 component is injected several times. The extract of the resulting emulsion is removed using a Carbon X extractor. In case of very strong and persistent dirt in the combustion chamber, it is recommended to repeat the procedure. Finally, before installing the spark plug (or injector), crank the engine with the starter (2-3 times for about 10 seconds) to remove any residues. It is recommended to cover the openings from the spark plugs or injectors with a cloth that absorbs the liquid well and will prevent contamination of the engine compartment.

Carbon x protects the engine from increased friction during starting, which prevents wear on the mechanical components.

However, the known cleaning method requires the use of two components, which increases the labor costs of the process and makes it not sufficiently technological. In addition, a non-skilled consumer can inadvertently mix up components, which makes cleaning the combustion chamber ineffective. The known method requires an oil and filter change after processing.

In addition, there is no information about the composition of the components in a wide range of information sources, which makes it impossible to evaluate it.

There is a known method of cleaning the combustion chamber from deposits of carbon and coke, which provides for the introduction of a chemical agent GZ0x Injection & carb cleaner supplied in the form of foam into the combustion chamber when the engine is not running cold, developed by the Japanese company S0ft99, holding for 3-10 hours, suction of the washing liquid. There is no composition of this flushing fluid, but there is fragmentary information that the composition includes a petroleum solvent, surfactants and glycol ether (see https://autobann.su/chem-delat-raskoksovku-dvigatelya.html, publ. 29.01.2019 https: //etlib.rublog639-raskoksovka-dvigatelya#SHUMMA).

As tests have shown, the well-known composition of the cleaning liquid cleans very well the carbon deposits on the piston and is able to stir the rings. But he still could not open the coke-cemented holes of the pistons.

It is used for cleaning carburetors, throttle valves, injectors and decarbonizing rings. Creates an oily film on the surface.

The cleaning method is carried out as follows.

Reduce the engine temperature before starting work.

Through a flexible tube installed in a spark plug well connected to a cylinder, inject GZOX flushing fluid for 5-7 seconds, slightly turning the cylinder with a flexible hose.

The liquid is kept for 3 to 10 hours.

At the end of soaking, GZOX is re-poured in order to raise the washed-out coke and wait 5 minutes, after which the flushing liquid is sucked out of each cylinder through a plug hole using a syringe and a vinyl tube. Start the engine and let it idle for 20 minutes. This can cause dirty fluid to flow out of the exhaust pipe. Increase engine speed up to 1500-2000 rpm. alternating the presence and absence of load. The operation is repeated: start the engine and let it run at idle for 20 minutes, until the white smoke from the exhaust pipe stops coming out. Change engine oil and filter.

This well-known composition loses in performance to Mitsubishi Shumma Engine Conditioner, a leading agent for decoking, a Japanese agent for decoking combustion chambers of internal combustion engines.

There is a known method for cleaning combustion chambers of internal combustion engines from deposits, selected as the closest analogue, providing for the supply of Mitsubishi Shumma Engine Conditioner cleaning fluid in the form of foam to each of the cylinders of an idle cooled engine, holding the liquid for 30 minutes, after which the flushing fluid is sucked out from each cylinder (see https://autobann.su/chem-delat-raskoksovku-dvigatelya.html published on January 29, 2018 https: //etlib.rublog639-raskoksovka-dvigatelya#SHUMMA).

According to information from publicly available information sources, the known Mitsubishi Shumma Engine Conditioner decoking contains petroleum-based solvent, surfactants and ethylene glycol monoethyl ether (ethyl cellosolve) 10-20%. The cleansing liquid smells like ammonia, which indicates that it contains amines or ammonia. However, it was not possible to identify official information on the quantitative and qualitative composition of the known cleaning liquid in open sources of information, and therefore, it is not possible to compare the qualitative and quantitative composition of the known and claimed cleaning liquids.

The advantages of this cleaning method are fast and high-quality decoking of both rings and valves. Carbon deposits on pistons, throttle valves and EGR can be cleaned. Does not require opening the motor. Not aggressive to valve stem seals.

The disadvantages of this tool include its high cost of about 1,700 rubles, as well as the low viscosity of the composition, which can cause engine breakdown. After the introduction of the cleaner into the cylinders, the initially formed foam breaks down and transforms into a liquid. This fluid has a low viscosity and penetrates down the cylinder to the engine oil system. Getting into the engine oil, the liquid does not mix with it, but flows down to the lowest position - the engine oil pan. In most modern cars, the oil pan is either aluminum or tin (in most cases), with the tin pans always painted with a layer of paint. The cleaner acts on the paint layer and destroys it. The rate of exposure may be different depending on the brand of paintwork, but according to our estimates, destructive effects occur in about 20% of cases. The rate of penetration of the composition into the oil system depends on the technical condition of the car and cannot always be assessed by the consumer, therefore the risk of the composition entering the oil is always present on any car. The destroyed paint layer clogs the filter mesh of the oil receiver and leads to a loss of engine lubrication, which can ultimately lead to damage.

In addition, the cleaning procedure does not imply a change of engine oil, which means prolonged contact of the engine oil with the cleaner and thus leads to a decrease in the performance properties of the oil (at least creates a risk of a decrease in these properties)

In addition, although the instructions for use indicate that it is sufficient to hold the product for 30 minutes, users believe that it is most effective at 3 to 5 hours.

Thus, the technical result to be solved by the claimed invention is the creation of an effective method for cleaning elements of the cylinder-piston group, using a composition of a cleaning agent with high viscosity and low penetrating power, which does not allow it to penetrate into the engine oil system and affect the paint layer oil pan, but, at the same time, capable of effectively cleaning all elements of the cylinder-piston group in contact with it.

The specified technical result is achieved by the fact that in the method of cleaning the combustion chamber of an internal combustion engine, providing for the supply of a cleaning liquid in the form of foam to each of the cylinders of an idle cooled engine, holding the liquid for 30 minutes, and then carrying out the suction of the washing liquid from each cylinder, according to the invention, an aqueous solution of low molecular weight and high molecular weight amines, anionic surfactants and ethers is used as a cleaning liquid, with the following ratio of ingredients in the claimed liquid:

Low molecular weight amines of the general formula: R ₁ -N- (R ₂ ) (R ₃ ), where R ₁ = H, CH ₃ , C ₂ H ₅ O, C ₃ H ₆ O, C ₂ H ₅ ; R ₂ = H; CH ₃ ; C ₂ H ₅ O, R ₃ = H; CH ₃ ; C ₂ H ₅ O 2-10% High molecular weight amines of the general formula: R ₁ N (R ₂ ) (R ₃ ), where R ₁ is a hydrocarbon residue of a mixture of saturated and unsaturated fatty acids containing from 12 to 24 carbon atoms, R ₂ = H; CH ₃ , R ₃ = H; CH ₃ 5-20% Anionic pav, with the general formula RX, where R is the hydrocarbon residue of a mixture of saturated and unsaturated fatty acids containing from 10 to 24 carbon atoms; X = -COOY; -OSO3Y; -OCH2COOY; -O (CH2CH2) n-OSO3Y, -OPO3Y2, -C6H4SO3Y, -OC (O) CH2CH (SO3Y) COOY, where Y = H, Na, K, NH4 + 5-20% Esters of the general formula R ₁ -OR ₂ , where R ₁ represents a hydrocarbon radical - C _n H _{2n + 1} at n = 1-14, and R2 = H; CH3; C2H5O; C ₃ H ₆ O; 15-30% Deionized water up to 100% (rest)

The use of the claimed substance as a cleaning liquid in the claimed method and precisely in the claimed amount contributes to both the safety of the procedure and the high cleaning efficiency.

At the same time, the use in the claimed method of precisely the combination of these components in the indicated quantities ensures the dissolution of the maximum number of components of tar-coke deposits on all parts of the intracylinder space, while the viscosity of the product will be at least 10 cSt, which does not allow the agent to penetrate into the engine oil system and , thereby performing the procedure safely for the engine.

The qualitative and quantitative composition of the claimed invention was obtained by the applicant as a result of lengthy research.

The claimed method, due to the use of a cleaning composition with the claimed amount of ingredients, not only provides effective cleaning of the combustion chamber parts of an internal combustion engine, but also improves engine compression, which is clearly seen from the examples presented. Visually, the results of surface cleaning by the claimed method and by the closest analogue are shown in the photographs.

FIG. 1 shows an image confirming the destruction of the paintwork at the lowest point of the oil pan of a car by a method using the agent chosen as the closest analogue. FIG. 2 shows images confirming the high efficiency of cleaning the surface of a car piston by the claimed method, one half of which is treated with a sample by the method of the closest analogue, the other half by the claimed method.

The method is carried out as follows.

Before use, the bottle with the cleaning agent in it is thoroughly shaken. Cleaning is carried out at a coolant temperature not higher than + 50 ° С

1. Turn off the ignition system. Dismantle the spark plugs on a gasoline engine and the glow plugs or injectors on a diesel engine.

2. Using an extension tube, the composition of the cleaning agent in the form of foam is introduced into the cylinders until the entire volume of the combustion chamber is filled with foam.

3. Leave the preparation for 30 minutes to expose the dirt.

4. After 30 minutes, using an extension tube, once again introduce the composition in the form of a foam into the cylinders until the entire volume of the combustion chamber is filled with foam.

5. Leave the preparation for 5 minutes.

6. Remove residual agent from cylinders and blow with compressed air. Cover the technological holes with a thick cloth and crank the engine with a starter for 10 seconds.

7. Remove the used oil as completely as possible, replace the oil filter and fill in new oil.

8. After cleaning the first 5-10 km it is not recommended to load the engine with high revs.

Examples of specific implementation are summarized in tables No. 1 and No. 2.

Claims (2)

A method for cleaning a combustion chamber of an internal combustion engine, providing for the supply of a cleaning liquid in the form of foam to each of the cylinders of an idle cooled engine, holding the liquid for 30 minutes, after which the flushing liquid is sucked from each cylinder, characterized in that the cleaning liquid is used an aqueous solution of low molecular weight and high molecular weight amines, anionic surfactants and ethers, with the following ratio of ingredients in the claimed liquid: Low molecular weight amines of the general formula: R ₁ -N- (R ₂ ) (R ₃ ), where R ₁ = H, CH ₃ , C ₂ H ₅ O, C ₃ H ₆ O, C ₂ H ₅ ; R ₂ = H; CH ₃ ; C ₂ H ₅ O, R ₃ = H; CH ₃ ; C ₂ H ₅ O 2-10% High molecular weight amines of the general formula: R ₁ N (R ₂ ) (R ₃ ), where R ₁ is a hydrocarbon residue of a mixture of saturated and unsaturated fatty acids containing from 12 to 24 carbon atoms, R ₂ = H; CH ₃ , R ₃ = H; CH ₃ 5-20% Anionic pav, with the general formula RX, where R is the hydrocarbon residue of a mixture of saturated and unsaturated fatty acids containing from 10 to 24 carbon atoms; X = -COOY; -OSO3Y; -OCH2COOY; -O (CH2CH2) n-OSO3Y, -OPO3Y2, -C6H4SO3Y, -OC (O) CH2CH (SO3Y) COOY, where Y = H, Na, K, NH4 + 5-20% Esters of the general formula R ₁ -OR ₂ , where R ₁ represents a hydrocarbon radical - C _n H _{2n + 1} at n = 1-14, and R2 = H; CH3; C2H5O; C ₃ H ₆ O; 15-30% Deionized water up to 100% (rest)

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