KR19980702400A - A composition for cleaning and coating in an internal combustion engine and a method for cleaning and coating in an internal combustion engine using the same - Google Patents

Abstract

In addition to reducing frictional losses caused by friction or cleaning and / or coating of internal combustion engine rotations and sliding parts, it also reduces the factors causing incomplete combustion of the combustion chamber, improving the performance of the internal combustion engine, Compositions containing zinc phosphate, solvents, surfactants, natural vegetable oils and mineral oils, for cleaning internal parts of internal combustion engines and for cleaning and coating the metal surfaces of the sliding parts, so as to deliver inherent performance, and A method of cleaning and coating an engine using the composition has been proposed.

Description

A composition for cleaning and coating in an internal combustion engine and a method for cleaning and coating in an internal combustion engine using the same

At present, the removal of dirt by oxidative wastes such as sludge and carbon accumulated in the internal combustion engine includes the expertise of dismantling each part of the internal combustion engine, cleaning and removing the dirt attached or fixed to each part, and reassembling the parts. It is eliminated by the method that requires patience. However, complete cleaning is not easy because there are some elaborate parts that are not easily disassembled in part or have micropores. Of course, a known cleaning method using a flushing oil can be carried out, but according to this method, only the surface of the dirt is cleaned, and a cleaning effect cannot be obtained in practice.

As mentioned above, cleaning the interior of internal combustion engines relies on methods that require patience, time and cost for disassembly and assembly by professionals. Moreover, traces of wear and fine scratches on the metal sliding surface due to friction occurring in the rotating and sliding parts of the internal combustion engine, and strain frictions due to the rugged micropores of the metal itself are responsible for friction losses such as the occurrence of slight vibrations and irregular rotations. It is a factor. Therefore, they reduce combustion energy (power energy), which leads to the impairment of the functionality of the internal combustion engine.

Target internal combustion engines are used in general passenger cars, buses, trucks and motorcycles, and are mandatory for regular vehicle inspection and registration; gasoline engines, diesel engines, propane engines, rotary engines and agricultural engines, construction vehicle engines, marine engines, industrial engines. (For compressors, for power generation, for cooling), and for aircraft engines. In particular, strain friction between vehicle engines (internal combustion engines), including imported cars and motorcycles, is a slight variation in the method of operating the holiday work of the mechanism that causes intake, compression, combustion and exhaust (valve systems, rotating parts, sliding parts) to be maintained regularly ( Resulting in incomplete combustion) due to ignition and time delays in valve operation. As a result, performance is reduced, and not only the original performance such as starting and accelerating performance, but also the increase in engine noise due to metal fatigue and a decrease in lubricity due to uneven oil film in the rotating and sliding portions are frictional resistance (friction loss) ), And at the same time, a decrease in the airtightness and the compression force in the combustion chamber. They also cause social problems such as deterioration of the living environment due to lower fuel consumption performance resulting from incomplete combustion, such as reduced combustion power (lower explosion power) and increased amounts of carbon monoxide and hydrocarbons in the exhaust gas.

The present invention relates to a composition for cleaning and coating inside an internal combustion engine, a method for cleaning inside an internal combustion engine using the composition, and a method for coating rotating parts and sliding parts, especially metal parts, of an internal combustion engine.

We thoroughly clean and remove carbon oxides, sludges, etc., especially those attached and accumulated inside internal combustion engines, especially attached oxidized wastes, and at the same time, metals such as rotating parts, sliding parts with scratches and rough marks such as traces of friction, traces of wear and fine lines By coating and improving the subsurface, intensive research has been conducted to find ways to improve the performance of internal combustion engines without using labor and time-consuming methods for disassembly, cleaning and assembling parts. As a result, the present invention has been completed.

The present invention provides a method of cleaning and evacuating (removing) the oxidized waste attached to an internal combustion engine without simultaneously dismantling the internal combustion engine body into parts, and simultaneously coating (coating) the rough surface by a frictional reaction.

The present invention also provides a cleaning and coating composition for use in a method of cleaning and coating the internal combustion engine body without breaking it into parts.

The composition for cleaning and coating inside an internal combustion engine according to the present invention contains zinc phosphate, a solvent, a surfactant, a mineral oil and a natural vegetable oil as main components.

Best mode for carrying out the invention

That is, the first aspect of the present invention relates to a composition for cleaning and coating in an internal combustion engine containing zinc phosphate, a solvent, a surfactant, a mineral oil and a natural vegetable oil as main components.

A second aspect of the invention provides 0.35-3.5 wt% zinc phosphate, 24-45 wt% solvent, 3.5-18 wt% surfactant, 6-12 wt% mineral oil and 1.6-12 wt% natural vegetable oil The composition relates to a composition for cleaning and coating in an internal combustion engine containing as a main component a total amount of zinc phosphate, a solvent, a surfactant, a mineral oil, a natural vegetable oil, and water in an amount of 100% by weight.

The third and fourth aspects relate to cleaning and coating methods inside an internal combustion engine using the compositions for cleaning and coating inside an internal combustion engine of the first and second aspects.

The invention will be explained in more detail below.

In this specification, zinc phosphate refers to zinc phosphate tetrahydrate, as well as mixtures of zinc dialkyldithiophosphate, zinc diaryldithiophosphate, dialkyldithiophosphate esters and zinc oxide, and alkyl alcohols or aryl alcohols, phosphorus penta sulfide (P ₂ S ₅ ) and zinc oxide.

Also included are compositions containing zinc phosphate, commercially available under the name Zinc, as engine oil feed.

Zinc phosphate ensures lubricity in the trachea, allows coating (impregnation) and repairs rough metal surfaces of slivers, wounds and fine non-uniformities (pores) resulting in frictional losses and sliding. Thereby normalizing (correcting and correcting) the deformed rotation and sliding (lubrication), and consequently reducing the frictional resistance of each part and improving engine rotation (performance) and combustion performance.

The content of zinc phosphate in the composition is 0.35-3.5 weight percent. If the amount is less than 0.35% by weight, the coating effect is insufficient, and even if the amount exceeds 3.5% by weight, no further improvement of the coating effect is obtained.

Zinc dithiophosphate is dispersed in mineral oil and then mixed and dispersed with other components. That is, when zinc phosphate tetrahydrate is used it is dissolved in a small amount of water (mainly using water containing a small amount of acid or alkali), then mixed and dispersed with mineral oil, contained in an amount of 0.35-3.5% by weight in the composition do.

Commercially available mineral oils can be used, but the use of bright stock (or bottom) oils (high concentrations of virgin oil) is suitable. The amount of mineral oil in the total composition may optionally be selected in the range of 6-12% by weight relative to the total weight of the composition.

So-called zinc, a commercially available product, already contains about 5 to about 23 weight percent of zinc phosphate in mineral oil. Thus, if used as such, an amount of about 6.3 to about 15.5 parts by weight may be added relative to 100 parts by weight of the composition. In this case, of course, since mineral oil is contained in zinc, it is not necessary.

Solvents used in the present invention are petroleum solvents such as aromatic solvents, aliphatic solvents or mixtures thereof.

Various petroleum solvents such as Pegasol AN-45 and Pegasol 3040 from Mobil Chemical Co., Ltd .; Exxon Co., Ltd. EXXSOL D-40, D-80, D-110, Isopar M, Isopar H; Nippon Oil Co., Ltd. Product A Solvent, K Solvent, Teclean Series N-20, N-22 and N-24; Idemitsu Petrochemical Co., Ltd. manufactured by Idemitsu Petrochemical Co., Ltd. IP Solvent-1620, 2028; Nikko Sekiyu Co., Ltd. product NS Clean 100 and 110; Mitsubishi Oil Co., Ltd. Products Mineral terpenes and solvents; Shellzole 70 and Shelzol 71 from Shell Japan Co., Ltd. can be used.

Solvents are used for mixing with and dissolving other components used in the composition, and for dissolving and removing oxidative wastes such as carbon, sludge that have accumulated or adhered inside the engine. Camshaft, rocker arm, rocker shaft, crankshaft, pin and bearing, tappet, push rod, valve, spring, cylinder liner, piston and pin, compression ring, oil ring, bearing, connecting rod, connecting rod cap, oil strainer, Solvents that are excellent in permeability to the complex and entangled narrow parts of the rotating part, the sliding part, such as oil passages (oil galleries) and plain metal bearings, which do not touch even if decomposed, are preferred. Of course, these solvents should be selected in consideration of the conditions that they adversely affect other engine parts (packing and sealing parts such as gaskets) and whether they are low risk such as explosive and flammable. The amount of solvent is 25-45% by weight relative to the total weight of the composition. If it is less than 25% by weight, the effect of removing oxidative waste is not sufficient, and if it exceeds 45% by weight, it may be problematic in flammability.

As surfactants, anionic, nonionic, amphoteric and cationic surfactants can be used. These may be used alone or as a mixture.

The first purpose of using the surfactant is to emulsify and disperse each component of the composition. The second purpose is to show the action as an aid to promote the release and dissolution of oxidizing wastes such as carbon, sludge by permeability and active force (activation), and the third purpose is flammable compositions such as petroleum solvents and natural vegetable oils. It is dispersed (emulsified) in water, thereby neutralizing it with a moderate effect without harm, and neutralizing risks such as flammability.

Any of anionic, nonionic, amphoteric and cationic surfactants can be used, but nonionic alkylphenylpolyethylene ether surfactants and polyethylene glycol fatty acid ester surfactants are suitable.

The amount of surfactant is 3.5-18% by weight relative to the total weight of the composition, which is sufficient. If the amount is less than 3.5% by weight, the effect of emulsifying and dividing all the components is insufficient, and if it exceeds 18% by weight, the problem of foaming occurs and an improvement in cleaning power cannot be expected.

Natural plant-based oils are used to promote effective fusion mixing of components and the dissolution and removal of fixed oxidative wastes such as carbon, sludge, etc. adhered or accumulated inside the organs, and to have a masking effect on the odor of the components.

Natural vegetable oils include terpineol, d-limonene, eugenol and l-carbon. The amount of natural vegetable oil is 1.6-12% by weight based on the total composition.

If the amount is less than 1.6% by weight, the masking effect is insufficient, and 12% by weight is sufficient to exhibit the masking effect, even if an amount exceeding this is used, the masking effect no longer increases. Therefore 12% by weight is sufficient.

The composition of the present invention is made 100 parts by weight by adding water to the combination of each of the above components. Generally, the amount of other compositions is chosen such that the amount of water is 28-55% by weight relative to the total composition. Of course, water can be added when used in the formulation of the composition.

Thus, the above components are contained in the above ratios: 0.35-3.5 parts by weight of zinc phosphate, 6-12 parts by weight of mineral oil, 24-45 parts by weight of solvent, 3.5-18 parts by weight of surfactant, and 1.6-12 parts by weight of natural vegetable oil. Formulations containing are also one of the embodiments of the present invention.

Water is preferably pure water or distilled water, but any water may be used.

Since the cleaning composition of the present invention is used in an internal combustion engine after lubricating oil has emerged from the engine, it is required to have physical properties capable of ensuring as much lubricity as possible. Thus each component can be selected such that lubricity is obtained as a physical property.

The cleaning and coating composition can be prepared by mixing the components and stirring the mixture, and there are no limitations on the mixing method and the stirring method.

Next, the cleaning and coating method according to the present invention will be described below.

The cleaning and coating method of the present invention can be applied to internal combustion engines of any kind. That is, various internal combustion engines for passenger cars, buses, trucks, motorcycles, construction vehicles, agricultural machinery, ships, aircraft, cooling, power generation, and compressors, for example, gasoline engines, diesel engines, LPG engines, rotary engines, and the like. Applicable

In the method for cleaning and coating an internal combustion engine according to the present invention, after completely removing the engine oil from the internal combustion engine, the composition is injected into the engine instead of the engine oil, and the composition is injected through the oil passage (oil gallery) for a predetermined time. The composition is circulated to bring the composition into contact and friction reaction with the rotating part, the sliding part (each engine part).

The cleaning and coating method of the present invention will be explained by taking the case of an automobile engine as an example.

The amount of composition used for cleaning and coating ranges from 80-120% relative to the amount of engine oil used.

First open the drain pan of the oil pan and drain out all the engine oil.

The drain cock of the oil pan is completely closed and the composition of the invention is injected from the engine oil injection port in an amount of 80-120% relative to the amount of engine oil used.

The engine is then started and idled for a period of time, for example about 1-5 minutes, to circulate the composition throughout the engine.

Stop the engine, leave for 10-30 minutes after stopping, then idling again. Do idling for at least 10-30 minutes and restart the engine. The drain cock is opened and the entire cleaning composition used for cleaning is taken out.

After the entire composition has been withdrawn, the engine is again idled for 5-20 minutes using flushing oil to remove the remaining composition remaining in the engine and the engine is rinsed. Rinse is preferably carried out at least twice.

After the cleaning is complete, replace the oil filter with a new one and pour a new quantity of engine oil into the engine.

By performing the above operation, not only the engine is completely cleaned but also the metal surfaces of the engine rotating part and the sliding part are coated. As a result, the engine rotating part and the sliding part surface become smooth, the frictional resistance is reduced, and the power performance (output) and fuel consumption performance are improved without reducing the explosion energy (extension energy). Of course, the life of the engine is also extended.

The following examples will illustrate the invention without limiting it.

Example 1 (Composition)

Zinc products containing 1.25% by weight of zinc phosphate and 5.75% by weight of mineral oil relative to the total weight of the composition, the total amount of zinc phosphate and mineral oil in the total weight of the composition is 7% by weight, and previously contained oil (zinc thiosulfate Zinc dithiophosphate) with 26 parts by weight of naphthenic paraffin petroleum solvent: Nippon Oil N-22, 6 parts by weight of d-limonene as a natural vegetable oil, and 8 parts by weight of nonionic surfactant as a surfactant: nonylphenol EO adduct And 5 parts by weight of imidazolium betaine amphoteric surfactant, and they are sufficiently stirred. After stirring, water is added to make a total of 100 parts by weight, and then stirred again to form a composition for cleaning and coating.

Example 2 (Composition)

Cleaning and coating compositions were obtained in the same manner as in Example 1, except that 5 parts by weight of nonionic surfactant polyethylene glycol fatty acid ester was used instead of 5 parts by weight of imidazolium betaine amphoteric surfactant.

Example 3 (Composition)

5 parts by weight of cationic surfactant: The cleaning and coating composition was obtained in the same manner as in Example 1 except that monoalkylammonium chloride was used in place of 5 parts by weight of imidazolium betaine amphoteric surfactant.

Example 4 (Washing and Coating Method)

Washing and coating were performed under the following conditions using the cleaning and coating composition obtained in Example 1.

Cleaning and Coating Conditions:

1. The car to be cleaned:

1988 Daihatsu Charade GT-XX Twin Cam Turbo (Model: G-100S)

Displacement: 1000 cc

Mileage 108,000 km

2. Engine performance of the car to be cleaned:

(1) Determination of the concentrations of carbon monoxide (CO) and hydrocarbons (HC) in the engine exhaust gas before cleaning:

CO concentration: 0.2%

HC concentration: 260 ppm

Maximum power measured by an automotive generator is 74.6 hp (Catalog data: 105 hp)

(2) The washing and coating steps are as follows.

(Iii) After completely removing the oil, the composition for cleaning and coating of the present invention was injected.

(Ii) Idling was performed for 1 minute without stopping the accelerator.

(Iii) The engine was stopped and left for 15 minutes.

(Iii) Idling was rerun without stopping the accelerator for 10 minutes.

(Iii) The drain cock was opened, the cleaning and coating composition of the present invention was taken out, and washed twice with flushing mineral oil.

(Iii) The oil element was replaced with a new one and the oil was changed.

3. Engine performance after cleaning and coating:

CO concentration: 0.0% (not detected even when measured at longer than specified)

HC concentration: 200 ppm

The maximum power measured by the car generator was 95.2 horsepower, close to the catalog data.

The removed cleaning and coating turned dark brown, indicating that it had removed the carbon and sludge inside the engine, and the cleaning and coating also turned thick but easy to use and flowable before use.

From the above results, it can be concluded that the cleaning and coating composition of the present invention certainly had a superior cleaning action, and furthermore, from the improvement of the output, the function of the engine itself was recovered when considering the driving distance of the used car.

In addition, mechanical noise was greatly reduced, resulting in quietness. This is judged by the coating effect of the rotating and sliding parts. (Result of repair)

Example 5 (Washing and Coating Method)

The same method as in Example 4 was repeated using a Nov. 1992 Nissan Pulsar 1700 cc diesel (model: X-SN14, motor CD-17) with a mileage of 9982 km.

Prior to the cleaning and coating treatment of the present invention, the concentration of black smoke in the exhaust gas of this car was measured by a smoke inspector at 58%.

When remeasured after cleaning and coating, it was improved markedly by 44%. Moreover, the mechanical noise disappeared from the engine sound when idling and the sound softened. Also, black smoke disappeared during idling, and the engine speed, which was up to 3,000-4,000, could increase to red zones when stretched.

According to the results of the test run, the maximum speed before the test was 140 km / h according to the meter, while the maximum speed meter record improved after the engine was treated according to the method of the present invention to exceed 170 km / h. The blowing up of the all-rotation zone was smooth, the accelerator response was obviously increased, the so-called upper limit was updated, and the black smoke in the exhaust gas was reduced to an unrecognized level.

In addition, according to the continuous test run, the result after about 9 months of cleaning and coating treatment is as follows.

(1) current car status

Mileage: about 30000 km

Engine problem, etc .: None

(2) No problem was found after driving around 20000 km.

(3) The concentration of black smoke in the exhaust gas measured by the smoke inspector was 47%, and the concentration slightly increased. However, black smoke was observed at the start of the engine and not at high rotational zones and at run time.

Claims (3)

A composition for cleaning and coating inside an internal combustion engine containing zinc phosphate, a solvent, a surfactant, a natural vegetable oil and a mineral oil. Zinc phosphate, containing 0.35-3.5 wt% zinc phosphate, 24-45 wt% solvent, 3.5-18 wt% surfactant, 6-12 wt% mineral oil and 1.6-12 wt% natural vegetable oil, A composition for cleaning and coating inside internal combustion engines in which the total amount of solvents, surfactants, mineral oils, natural vegetable oils and water is 100% by weight. A method of cleaning and coating inside an internal combustion engine using the composition for cleaning and coating inside an internal combustion engine as defined in claim 1.