KR102108483B1 - Insulating detergent composition for cleaning environment-friendly automobile engine room and motor room, cleaning method and equipment using same - Google Patents

Abstract

The present invention relates to an engine room cleaner composition having improved cleaning properties against oil stains, pollutants, and a cleaning method and cleaning device using the same and, more specifically, to an engine room cleaner composition comprising: hydrogenated 1,3-xylene; limonene; C8 to C14 branched alkane; cyclohexane substituted with one or at least two alkyl groups of C1 to C3; and a hexane solvent or a heptane solvent.

Description

Insulating detergent composition for cleaning environment-friendly automobile engine room and motor room, cleaning method and equipment using same}

The present invention relates to an environmentally friendly car engine room and motor room insulation cleaning composition and a cleaning method and cleaning device using the same, specifically showing high cleaning properties against oily pollutants, and an electrically safe eco-friendly car engine room and motor room It relates to a cleaning detergent composition for cleaning, a cleaning method and a cleaning device using the same.

The engine room of the vehicle is the place where the most important parts for vehicle operation such as the engine, battery, fuse box, and oil tank are located, completely sealed If it is not operated for a long time, the grease generated by the leakage of engine oil, etc., will accumulate and adhere to the surface of various parts inside the engine room. These fixed sources of contamination (oil) can degrade the efficiency of automobile parts and interfere with normal operation of the car or cause overheating of engine room parts (engines and radiators, etc.), which can lead to fire, especially corrosion of engine room parts. Or there is a risk of safety accidents by causing hardening.

On the other hand, electric vehicles (Electronic Vehicles), hydrogen fuel cell vehicles (Fuel Cell Electric Vehicles) and hybrid vehicles (Hybrid vehicles) are eco-friendly vehicles that use motors as motors, unlike vehicles that use conventional petroleum fuels and engines. -friendly car). The motor room of such an eco-friendly vehicle further includes a complicated electric system circuit than the engine room of a conventional vehicle, and because of the relatively high current (about 400 ~ 500V) flows, it is more suitable for the pollutants adhering to the interior of the motor room. weak.

Therefore, in order to improve the lifespan and durability of an eco-friendly vehicle, periodic management is required to remove pollutants inside the engine room (or motor room, hereinafter referred to as the engine room). Conventional engine room cleaning methods include: 1) a method of wiping off contaminants by spraying high-pressure washing water, and 2) wiping off contaminants using a cloth moistened with petroleum solvents (e.g., mixtures of various hydrocarbons obtained in the oil refining process). Method or 3) A method of removing contaminants using an industrial cleaning agent for cleaning electronic components. However, in the case of method 1), water may penetrate into the ignition system parts and cause an electrical problem, which may cause a safety accident. In the case of method 2), there is a disadvantage that all oily contaminants inside the engine room cannot be completely removed and the working time is long. Finally, in method 3), the petroleum solvent contained in the industrial cleaner has a large carbon number and has a high viscosity, so a separate additive for viscosity adjustment is required for spraying such as spray spraying. However, as these additives are highly volatile substances such as ozone-depleting substances or lower alcohols (3 or less carbon atoms), in the case of industrial detergents whose viscosity is adjusted to be sprayable, explosion accidents may occur due to the low flash point of volatile substances. There is danger. This risk is very high in eco-friendly vehicles equipped with complex electric system circuits, so it is commercially impossible to use water-based washing methods and conventional cleaning agents with very high volatility to clean engine rooms of eco-friendly vehicles. There is a need for an engine room cleaner composition with improved cleaning power.

It is an object of the present invention to provide an engine room cleaner composition that can be sprayed and electrically safe without volatile substances such as low alcohol (3 carbons or less) having high cleaning properties against oily pollutants.

Another object of the present invention is to provide a cleaning method using the engine room cleaner composition described above.

Another object of the present invention is to provide an engine room cleaning device using the engine room cleaner composition described above.

The engine room cleaning liquid composition according to the present invention may include cyclohexane and hexane or heptane solvents substituted with one or two or more alkyl groups of hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, and C1-C3. .

In one example of the present invention, the aforementioned C8-C14 branched alkane may be a C10-C12 branched alkane.

In an example of the present invention, the branched alkane of C10-C12 described above may be a branched undecane.

In one example of the present invention, cyclohexane substituted with one or more of the alkyl groups of C1-C3 described above may be cyclohexane substituted with one or two methyl groups.

In one example of the present invention, the content of the hydrogenated 1,3-xylene contained in the engine room detergent composition may be included as 0.1 to 10% by weight of the total weight of the composition.

In one example of the present invention, the content of limonene contained in the engine room detergent composition may be included as 0.1 to 15% by weight of the total weight of the composition.

In one example of the present invention, the weight ratio of C8-C14 branched alkane and hexane or heptane solvent contained in the engine room detergent composition may be 1: 0.1 to 1: 1.

In one example of the present invention, the engine room detergent composition may include hydrogenated 1,3-xylene, limonene, branched undecane, methylcyclohexane and hexane.

In one example of the present invention, the boiling point at normal pressure of the engine room detergent composition may be 72 to 225 ° C.

In one example of the present invention, the engine room detergent composition may further include a nonionic surfactant or a cationic surfactant.

In one example of the present invention, the aforementioned nonionic surfactant may be a polyoxyethylene-based nonionic surfactant having an HLB of 5 or less.

In one example of the present invention, the cationic surfactant described above may be an imidazoline-based cationic surfactant.

In one example of the invention, the engine room detergent composition may be for spray spraying.

The method for cleaning an engine room according to the present invention may include a) spraying the above-described engine room detergent composition into the engine room.

In an example of the present invention, the injection of step a) described above may be spray injection.

In one example of the present invention, the engine room described above may be an eco-friendly car engine room.

In an example of the present invention, the engine room cleaner composition of step a) described above may be in a state heated to a warm temperature of 30 to 40 ° C.

The engine room cleaning device according to the present invention may be an engine room cleaning device having an engine room cleaner composition spray gun (A) and a cleaning air / engine room cleaner composition spray gun (B), and the engine room cleaner composition described above. Engine room cleaner composition supply unit for supplying, engine room cleaner composition heating unit that warms up to the required working temperature for the engine room cleaner composition described above, washing air compressor unit for supplying cleaning air, and engine room cleaner composition supply unit described above And it may include an engine room cleaning device control unit for controlling the operation of the above-described engine room cleaning device by receiving and transmitting data between each component of the above-described cleaning air compressor unit. In addition, the above-described engine room cleaner composition spray gun (A) sprays the engine room cleaner composition supplied from the above-described engine room cleaner composition supply unit, and the above-described cleaning air / engine room cleaner composition spray gun (B) is described above. It may include a nozzle for simultaneously spraying the engine room cleaner composition supplied from the engine room cleaner composition supply unit and the cleaning air supplied from the above-described cleaning air compressor unit.

The above-described engine room detergent composition supply unit according to the present invention includes an engine room detergent composition storage container for storing the engine room detergent composition, a first filter for filtering impurities in the engine room detergent composition in the above-described engine room detergent composition storage container, The first moisture sensor for sensing moisture in the storage container for the engine room detergent composition described above, the flow rate sensor for controlling the supply of the engine room detergent composition described above, and the engine room detergent composition in the storage container for the engine room detergent composition described above are described above. It may include an engine room cleaner composition spray gun (A) and a first pump supplied to the above-described cleaning air / engine room cleaner composition spray gun (B).

The above-described engine room detergent composition heating unit according to the present invention includes a heat exchanger for controlling the temperature of the above-described engine room detergent composition supplied from the above-described engine room detergent composition supply unit, and the above-described engine room detergent composition engine. From the room cleaner composition supply unit to the above-mentioned engine room cleaner composition heating unit supplied to the heating unit, the above-described engine room cleaner composition from the above-described engine room cleaner composition heating unit is supplied to the washing air compressor unit, the above-described discharge pipe A first thermometer that senses the temperature of the flowing engine room detergent composition, a second thermometer that senses the temperature of the engine room detergent composition flowing in the above-described injection tube, and a agent that senses the temperature of the engine room detergent composition flowing into the heat exchanger described above. 3 Thermometer and 4th thermometer to detect the temperature outside the above-mentioned heat exchanger It can be included.

The above-described washing air compressor unit according to the present invention is an air compressor for supplying washing air, a solenoid valve for controlling the supply of the engine room detergent composition supplied from the above-mentioned heating unit to the above-described washing air compressor unit, above Plunger pump that supplies the engine room cleaner composition in the heating unit to the engine room cleaner composition spray gun (A) and the cleaning air / engine room cleaner composition spray gun (B), installed between the above-described air compressor and the above-described plunger pump A mixing valve that adjusts the pressure of the cleaning air supplied from the above-described air compressor to the above-described air / engine room cleaner composition spray gun (B), and a filter that filters impurities in the cleaning air supplied from the above-described air compressor. 2 The second water to detect the moisture of the cleaning air supplied from the filter and the above-mentioned air compressor It may include a minute sensor.

The above-described engine room cleaning apparatus according to the present invention includes a leakage current detection unit for detecting leakage current leaking from the above-described engine room and air leakage from the above-described engine room cleaning device, first pump and plunger pump. And, it may be a structure connected to the ground.

The engine room cleaning liquid composition according to the present invention includes cyclohexane and hexane or heptane solvents substituted with one or two or more alkyl groups of hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, and C1-C3, and is low-grade. It is possible to spray even if it does not contain volatile substances such as alcohols (3 carbons or less), and is electrically safe, and has an effect of having significantly improved cleaning characteristics against oily pollutants.

In addition, the method for cleaning an engine room according to the present invention may provide a method for cleaning an engine room using an engine room cleaner composition in which the above-described effects of the engine room cleaner composition can be implemented and used remarkably. Specifically, the cleaning method of the engine room has the advantage of having excellent safety because it does not ignite even when the engine room cleaning agent composition is heated to lukewarm (30 to 40 ° C), and by heating, the cleaning power against the contamination source is greatly improved There is an advantage that can be made.

In addition to this, the engine room cleaning apparatus according to the present invention has an advantage that the engine room cleaning composition described above can be easily heated to a required temperature.

1 is a configuration diagram showing the overall configuration of an engine room cleaning device.

Hereinafter, the present invention will be described in detail.

The embodiments of the present invention are intended to more specifically explain the spirit of the present invention to those skilled in the art, and the scope of the present invention is not limited by these examples, and there may be numerous modifications and variations within the scope of the present invention. At this time, unless there are other definitions in the technical terms and scientific terms used in the present invention, those skilled in the art to which this invention pertains have the meanings that are commonly understood, and the subject matter of the present invention in the following description Descriptions of well-known functions and configurations that may be obscured are omitted. In the above description of the present invention, the unit of% used unclearly without specific reference means% by weight. In addition, all reagents used in the following examples are commercial products or can be synthesized by conventional techniques.

The engine room cleaning liquid composition according to the present invention includes cyclohexane and hexane or heptane solvents substituted with one or two or more alkyl groups of hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, and C1-C3, and is low-grade. Even if it does not contain volatile substances such as alcohol (carbon number 3 or less), spraying including spraying is possible, it is electrically safe, and cleaning properties against oily contaminants can be significantly improved. In addition, the engine room cleaner composition according to the present invention is useful for cleaning engine rooms and motor rooms of eco-friendly vehicles including electric vehicles, fuel cell electric vehicles, and hybrid vehicles. . However, it does not exclude the purpose of cleaning the engine room of a conventional internal combustion engine automobile.

In detail, the engine room detergent composition according to the present invention contains hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, cyclohexane and hexane or heptane solvents substituted with one or more alkyl groups of C1-C3 As a result, it is electrically safe and has low viscosity and high boiling point compared to conventional industrial cleaners containing additives (substances with very high volatility such as lower alcohols), volatile substances such as lower alcohols (3 carbons or less). Safe spray spraying can be performed without the risk of ignition at the flash point (45 to 48 ° C) of limonene without containing. In addition, the use of engine room cleaners as the cyclohexane and hexane or heptane solvents substituted with one or two or more substituted with hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, C1-C3 alkyl groups is used. Can have significantly improved cleaning properties in oil stains.

The hydrogenated 1,3-xylene has high cleaning properties against oily contaminants, and thus can provide improved cleaning properties as it is included in the engine room cleaner composition.

One specific example of cyclohexane substituted with one or two or more alkyl groups of C1-C3 included in the engine room detergent composition according to the present invention may be cyclohexane substituted with one or two methyl groups. The cyclohexane substituted with one or two methyl groups is advantageous because it can rapidly dissolve grease in the engine room and improve cleaning characteristics against grease contaminants when spraying.

In one preferred embodiment, the hydrogenated 1,3-xylene and one or two methyl group-substituted cyclohexanes contained in the engine room cleaner composition induce synergistic effects with each other when mixing, thereby inducing a synergistic effect on the engine room cleaner composition. It is good to be able to significantly improve the cleaning properties of the oily dirt source. In this aspect, the engine room cleaner composition may contain 0.1 to 10% by weight of hydrogenated 1,3-xylene and 0.2 to 5% by weight of cyclohexane substituted with one or two methyl groups of the total weight of the engine room cleaner composition. have. In one embodiment, the engine room detergent composition is preferably cyclohexane substituted with 0.1 to 5% by weight of hydrogenated 1,3-xylene and 0.5 to 3% by weight of one or two methyl groups of the total weight of the engine room detergent composition. It may contain 0.5 to 3% by weight of hydrogenated 1,3-xylene and 0.8 to 1.2% by weight of cyclohexane substituted with one or two methyl groups.

Examples of C8-C14 branched alkanes included in the engine room cleaner composition according to the present invention, branched octane (C8), branched nonane (C9), branched decane (C10), branched undecane (C11), Branched dodecane (C12), branched tridecane (C13) and branched tetradecane (C14). In one embodiment, the C8-C14 branched alkanes contained in the engine room detergent composition may be C10-C12 branched alkanes, preferably branched undecane (C11). One specific example of branched undecane (C11) may be 2-methyldecane, 3-methyldecane, 4-methyldecane or 5-methyldecane. The engine room cleaner composition containing the branched undecane has a low viscosity to improve the injection force, and can be vaporized quickly without remaining after cleaning the engine room, and is replaced by hydrogenated 1,3-xylene and one or two methyl groups. When it is mixed with cyclohexane, it has solidified and quickly dissolves in close contact with grease and has very improved cleaning properties, and can prevent dust and grease from remaining on the surface of the object to be cleaned (internal parts of the engine room).

Limonene contained in the engine room cleaner composition according to the present invention is a natural cleaning component extracted from citrus fruits, has high cleaning properties against oily pollutants, and has a low viscosity of about 1.1 cSt at room temperature (25 ° C), resulting in engine room cleaner compositions It is possible to improve the cleaning properties for the oily contaminants, and to lower the overall viscosity of the engine room cleaner composition.

In addition, the engine room cleaner composition according to the present invention may include a hexane or heptane solvent. The hexane or heptane solvent contained in the engine room detergent composition has a cleaning ability against oily contaminants and has an extremely low viscosity at room temperature (hexane: about 0.32 cSt, heptane: about 0.42 cSt). The hexane or heptane solvent is preferable because it can lower the overall viscosity of the engine room cleaning agent composition when used in combination with the C8-C14 branched alkanes, and also the surface layer of the contaminant is rapidly cleaned rather than gradually cleaned from the surface for oily contaminants of various chemical species. It is desirable because it can penetrate and exhibit a fast and uniform cleaning effect from the inside of the pollutant.

At this time, the viscosity refers to a kinematic viscosity, and the kinematic viscosity is a viscosity expressed in the presence of gravity, and in the case of a liquid, a kinematic viscosity is mostly used. Kinematic viscosity is calculated by dividing the density (g / cm ³ ) by the viscosity g / (cm · s), and the unit is cm ² / s, and St is used after the first letter of Stockes, a commonly known British fluidist, CSt, the value of 100th of St, is mainly used.

As described above, the engine room cleaner composition comprising cyclohexane and hexane or heptane solvent substituted with one or two or more alkyl groups of hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, and C1-C3 is room temperature. In can have a low viscosity. Furthermore, the engine room detergent composition may have a relatively high boiling point at normal pressure despite having a low viscosity at room temperature.

Accordingly, the engine room cleaner composition according to the present invention contains hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, cyclohexane and hexane or heptane solvents substituted with one or more alkyl groups of C1-C3. , Engine room cleaner composition itself may have a very low viscosity and a high boiling point. Accordingly, spraying including spray spraying may be possible without containing volatile substances such as lower alcohols (3 or less carbon atoms), and the engine room cleaner composition according to the present invention may be used for spray spraying.

Furthermore, the engine room cleaner composition according to the present invention may be injected with compressed air. Accordingly, the engine room cleaner composition of the present invention is an environmentally harmful substances (for example, ozone depleting substances such as Freon (Chloro Fluoro Carbons, CFC), Hydrochloride Fluoro Carbon (HCFC), Halon, etc.) High pressure injection by compressed air is not included, and an environmentally friendly engine room cleaning method can be provided.

At this time, the high pressure jet including the spray jet is to be sprayed using a high pressure jet nozzle, and the discharge pressure of the high pressure jet nozzle is 50 to 700 kgf / cm ² , specifically, 70 to 650 kgf / cm ² It can be pressure. However, it is not necessarily limited to this, and the present invention does not exclude low pressure injection. The high pressure injection nozzle is not limited in form, as long as it can spray the engine room detergent composition.

In addition, the engine room cleaner composition according to the present invention contains cyclohexane and hexane or heptane solvents substituted with one or two or more alkyl groups of hydrogenated 1,3-xylene, limonene, C8-C14 branched alkanes, C1-C3. Accordingly, the engine room cleaner composition itself has excellent insulation properties as it is non-polar. Accordingly, the engine room cleaner composition of the present invention is more advantageous because it can be used for cleaning engine rooms and motor rooms of eco-friendly vehicles or internal combustion engine vehicles including electric vehicles, hydrogen fuel cell vehicles, and hybrid vehicles equipped with complex electric system circuits.

In an aspect for providing an engine room cleaner composition for an electrically safe spray injection application according to the present invention, the engine room cleaner composition is 0.1 to 15% by weight of limonene, 50 to 98% by weight of C8- of the total weight of the engine room cleaner composition. C14 branched alkanes and 1 to 45% by weight of hexane or heptane solvent. In one embodiment, 0.5 to 10% by weight of limonene, 55 to 90% by weight of C8-C14 branched alkanes and 5 to 40% by weight of hexane or heptane solvent, preferably engine, in the total weight of the engine room detergent composition Room cleaner composition may contain 1 to 5% by weight of limonene, 60 to 85% by weight of C8-C14 branched alkanes and 10 to 35% by weight of hexane or heptane solvent.

More advantageously, the engine room cleaner composition of the present invention has a high cleaning property against oily contaminants, and in order to ensure high spraying properties, the weight ratio of C8-C14 branched alkanes: hexane or heptane solvent contained in the engine room cleaning agent composition It may be 1: 0.1 to 1: 1, specifically, 1: 0.1 to 1: 0.8, preferably, 1: 0.1 to 1: 0.5. The weight ratio of the engine room cleaner composition may be advantageous in that the above-described effects are well implemented, but is not limited thereto.

In one advantageous embodiment, the engine room detergent composition according to the present invention may include hydrogenated 1,3-xylene, limonene, branched undecane, methylcyclohexane and hexane. Thus, as the engine room cleaner composition according to the present invention contains hydrogenated 1,3-xylene, limonene, branched undecane, methylcyclohexane, and hexane, the above-described effects may be better realized. . Specifically, as the engine room cleaner composition of the present invention contains hydrogenated 1,3-xylene, limonene, branched undecane, methylcyclohexane, and hexane, the boiling point at normal pressure of the engine room cleaner composition is 72. It may be from 225 ° C, preferably 90 to 200 ° C, more preferably 120 to 200 ° C, the viscosity of the engine room cleaner composition may be 0.1 to 10 cSt, preferably 0.2 to 5 cSt. Therefore, the engine room cleaner composition containing hydrogenated 1,3-xylene, limonene, branched undecane, methylcyclohexane and hexane has a very low viscosity at room temperature and a high boiling point at normal pressure, resulting in lower alcohol ( It is advantageous because it can have excellent safety that does not generate ignition when spraying at the flash point (45 to 48 ° C) of limonene even if it does not contain volatile substances such as carbon atoms or less).

In the aspect that the above-described effects are well implemented, the engine room cleaner composition may contain 0.1 to 10% by weight of hydrogenated 1,3-xylene, 0.1 to 15% by weight limonene, and 50 to 98% by weight of the total weight of the engine room cleaner composition. Branched undecane, 0.2 to 5% by weight of methylcyclohexane and 1 to 45% by weight of hexane solvent. In one embodiment, the engine room cleaner composition comprises 0.1 to 5% by weight of hydrogenated 1,3-xylene, 0.5 to 10% by weight limonene, and 55 to 90% by weight of branched undecane in the total weight of the engine room cleaner composition. , 0.5 to 3% by weight of methylcyclohexane and 5 to 40% by weight of hexane solvent, preferably, the engine room cleaner composition is 0.5 to 3% by weight of hydrogenated 1,3-xylene, 1 of the total weight of the engine room cleaner composition, 1 To 5% by weight of limonene, 60 to 85% by weight of branched undecane, 0.8 to 1.2% by weight of methylcyclohexane and 10 to 35% by weight of hexane solvent.

In one advantageous example, the weight ratio of the branched undecane: hexane contained in the engine room detergent composition is 1: 0.1 to 1: 1, specifically, 1: 0.1 to 1: 0.8, preferably 1: 0.1 to 1: 0.5. The weight ratio of the engine room cleaner composition may be advantageous in terms of ensuring high cleaning properties and high spraying properties against oily contaminants in the engine room cleaner composition, but is not limited thereto.

Furthermore, the engine room detergent composition according to the present invention may further include a nonionic surfactant or a cationic surfactant. The engine room detergent composition according to the present invention may contain a nonionic surfactant or a cationic surfactant, so that even if water is inevitably mixed inside the engine room detergent composition container, it may be a safe engine room detergent composition usable for parts of the electric system. . In detail, when water is inevitably mixed in the engine room detergent composition container, water is present in the lower layer of the engine room detergent composition container and separated. The water present in phase separation from the engine room cleaning agent composition inside the container of the engine room cleaning agent composition is sprayed together while being separated from the engine room cleaning agent composition when spraying the engine room cleaning agent composition. It can be dangerous because it can cause safety accidents. However, the engine room detergent composition according to the present invention contains a surfactant component (nonionic surfactant and cationic surfactant), so that the surfactant component penetrates into the engine room detergent composition container and the water in the engine room detergent composition in the engine room detergent composition It is good because it can help to stably disperse in the container. Accordingly, the engine room cleaner composition containing the surfactant component is present in the engine room cleaner composition container, even if water is inevitably mixed in the engine room cleaner composition container, as the water is stably dispersed in the engine room cleaner composition container, the surfactant component Engine room cleaner composition containing is advantageous because it can provide a safer engine room cleaner composition when spraying.

For example, the nonionic surfactant may be a polyoxyethylene-based nonionic surfactant having an HLB of 5 or less. Specifically, polyoxyethylene oleyl ether, polyoxyethylene stearyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene stearyl amine, polyoxyethylene stearyl amine), polyoxyethylene tallow alkyl amine, and the like. In one embodiment, the polyoxyethylene-based nonionic surfactant having an HLB of 5 or less may be polyoxyethylene (2) stearyl amine, but is not limited thereto.

In one example, the cationic surfactant may be an imidazoline cationic surfactant, specifically, N-hydrocyethyl C12-C20 imidazoline, aminoethyl C12-C20 imida It may be at least one compound selected from azoline (Aminoethyl C12-C20 imidazolines), amidoethyl C12-C20 imidazolines, and the like. In one embodiment, the imidazoline-based cationic surfactant may be aminoethyl C12-C20 imidazoline, but is not limited thereto.

In one advantageous example, the engine room detergent composition according to the present invention contains a polyoxyethylene stearyl amine nonionic surfactant and an aminoethyl C12-C20 imidazoline cationic surfactant, so that the solution stability of the engine room detergent composition ( Dispersion stability) and cleaning power can be greatly improved, and it has good anti-corrosion and anti-static (anti-static) properties. In this aspect, the engine room cleaner composition according to the present invention, in the aspect that the above-described effects are well implemented, the engine room cleaner composition according to the present invention is 0.1 to 10% by weight of the surfactant component (nonionic surfactant) And cationic surfactants), specifically, 0.5 to 5% by weight of a surfactant component, preferably 1 to 3% by weight of a surfactant component. In addition, the weight ratio of the cationic surfactant and the nonionic surfactant contained in the engine room detergent composition may be 1: 0.5 to 2, specifically 1: 0.8 to 1.2. The weight ratio and the mixing ratio of the surfactant component contained in the engine room detergent composition may be advantageous in that the above-described effects are well implemented, but are not limited thereto.

The method for cleaning an engine room according to the present invention includes a) spraying the above-described engine room detergent composition into the engine room.

At this time, the injection of step a) may be spray injection, but is not limited thereto. In addition, the engine room may be an engine room and a motor room of an eco-friendly vehicle including an electric vehicle, a hydrogen fuel cell vehicle, and a hybrid vehicle, but does not exclude the purpose of cleaning the engine room of a conventional internal combustion engine vehicle.

In addition, the washing method according to the present invention includes a simple washing method of simply spraying the engine room detergent composition onto the object to be cleaned (internal parts of the engine room) and a warm washing method of warming and spraying the detergent composition at a temperature of 30 to 40 ° C. can do. In detail, the cleaning method using the engine room cleaner composition heated to lukewarm (warm cleaning method) significantly improves the cleaning properties of the oily contaminants by reducing the viscosity of the grease contaminants such as grease and engine oil on the surface of the engine room parts. It works.

The engine room cleaner composition of step (a) may be embodied in a container, but is not limited thereto.

The present invention includes an engine room cleaning device using the engine room cleaner composition described above. Accordingly, the engine room cleaning apparatus according to the present invention will be described in detail with reference to FIG. 1 attached below.

As shown in Figure 1, the engine room cleaning device according to the present invention may be an engine room cleaning device having an engine room cleaner composition spray gun (A) and a cleaning air / engine room cleaner composition spray gun (B). , Engine room detergent composition supply unit 100 for supplying the above-described engine room detergent composition, engine room detergent composition heating unit 200 for heating the engine room detergent composition to a required working temperature, for washing to supply washing air It may include an engine room cleaning device control unit 400 for controlling the operation of the engine room cleaning device by receiving and transmitting data between each component of the air compressor unit 300 and the above-described cleaning air compressor unit.

The engine room cleaner composition spray gun (A) sprays the engine room cleaner composition supplied from the engine room cleaner composition supply unit 100, and the cleaning air / engine room cleaner composition spray gun (B) is the engine room cleaner composition supply unit It may include a nozzle for simultaneously spraying the engine room cleaner composition supplied from (100) and the cleaning air supplied from the cleaning air compressor unit (300).

The engine room detergent composition supply unit 100 includes an engine room detergent composition storage container 110 for storing the engine room detergent composition, and an engine room detergent composition heating unit 200 for storing the engine room detergent composition in the engine room detergent composition storage container 110. ) The first pump 120, the first filter 130 for filtering impurities in the engine room detergent composition in the engine room detergent composition storage container 110, the above-described engine room detergent composition storage moisture It may include a flow sensor 142 for controlling the supply of the engine room cleaning agent composition supplied to the engine room cleaning agent composition heating unit 200 from the sensing first moisture sensor 141 and the engine room cleaning agent composition storage container 110. have.

The engine room cleaner composition heating unit 200 includes a heat exchanger 210 that controls the temperature of the engine room cleaner composition supplied from the engine room cleaner composition supply unit 100, and the engine room cleaner composition supply unit 100. ), The injection pipe 220 supplied to the heating unit 200, the engine room detergent composition is supplied from the engine room detergent composition heating unit 200 to the cleaning air compressor unit 300, the discharge pipe 230, discharge pipe 230 ), The first thermometer 241 for sensing the temperature of the engine room detergent composition flowing in, the second thermometer 242 for sensing the temperature of the engine room detergent composition flowing in the injection tube 220, the heat exchanger 210 flowing inside It may include a third thermometer 243 for sensing the temperature of the engine room cleaner composition and a fourth thermometer 244 for sensing the temperature outside the heat exchanger 210.

The washing air compressor unit 300 is a solenoid valve 310 that controls the supply of the engine room detergent composition supplied from the heating unit 200 to the washing air compressor unit 300, an air compressor supplying washing air ( 320), the engine room cleaner composition in the heating unit 200 to the engine room cleaner composition spray gun (A) and the cleaning air / engine room cleaner composition spray gun (B) for supplying the plunger pump 350, air compressor ( 320) is installed between the plunger pump 350, the mixing valve 330 to adjust the pressure of the cleaning air supplied from the air compressor 320 to the air / engine room cleaner composition spray gun (B), air compressor (320) It may include a second filter 380 for filtering the impurities of the cleaning air supplied from) and a second moisture sensor 340 for detecting the moisture of the cleaning air supplied from the above-described air compressor.

The control unit 400 may control the operation of the engine room cleaner composition spray gun A and the cleaning air / engine room cleaner composition spray gun B by receiving and transmitting data of each component. More specifically, the control unit 400 is connected to the pressure information of the insulating cleaning liquid container 110, the first moisture sensor 141, the second moisture sensor 340, the solenoid valve 310 and the mixing valve 330, respectively. It is possible to control the operation of the engine room cleaner composition spray gun (A) and the cleaning air / engine room cleaner composition spray gun (B) by transmitting and receiving various data regarding the cleaning operation between the components.

In addition, the engine room cleaning device according to the present invention leaks leakage current from the engine room (cleaning device) and the air compressor 320, the first pump 120 and the plunger pump 350 of the engine room cleaning device. It includes a leakage current detector 500 for detecting the leakage current, it may be a structure connected to the ground 600. Specifically, the leakage current detector 500 leaks from the engine room when spraying the engine room cleaner composition or the cleaning air of the engine room cleaner composition spray gun (A) and the cleaning air / engine room cleaner composition spray gun (B). Leakage current or leakage current leaked from the air compressor 320, the first pump 120, and the plunger pump 350 of the engine room cleaning device to detect the leakage current, and the engine room cleaner composition spray gun with a visible audible alarm (A) and the air / engine room cleaner composition for cleaning The emergency operation of the spray gun (B) can be prevented to prevent the accident in advance by protecting the worker from the danger of electric shock.

For more detailed description of the supply unit 100, the heating unit 200, the air compressor unit 300 for washing, the control unit 400, the detection unit 500 and the ground unit 600, the registered patents filed by the present applicant It is mentioned in detail in Publication No. 10-1333672 and Registered Patent Publication No. 10-1800324, and the engine room cleaning device according to the present invention is described in Registered Patent Publication No. 10-1333672 and Registered Patent Publication No. 10-1800324. All inclusive.

The engine room cleaner composition according to the present invention and the cleaning method using the same may be further used for cleaning a pollutant in a garage floor or a workshop.

(Example 1-4)

300rpm using cyclohexane and hexane substituted with one or two methyl groups as hydrogenated 1,3-xylene, limonene, branched undecane to prepare an engine room cleaner composition that satisfies the components and contents of Table 1 Evenly dispersed for 30 minutes to prepare the engine room cleaner compositions of Examples 1 to 4.

(Example 5)

According to Table 1, polyoxyethylene-based nonionic surfactants (polyoxyethylene (2) stearyl amine) and aminoethyl imidazoline cationic surfactants having an average of 2 moles of oxyethylene added as a surfactant component to the engine room detergent composition (Imidazoline 18 NH, Lakeland Laboratories) was further added. Specifically, hydrogen 1,3-xylene, limonene, branched undecane, cyclohexane, hexane, polyoxyethylene (2) stearyl amine and aminoethyl already substituted with one or two methyl groups when preparing the engine room detergent composition The engine room cleaner composition of Example 5 was prepared by uniformly dispersing dazoline at 300 rpm for 30 minutes using a stirrer. Here, when water inevitably mixed with the engine room cleaner composition is mixed, the prepared embodiment is further confirmed to confirm the effect (dispersion stability) on the water of Example 5, which is an engine room cleaner composition containing a surfactant component, Test solution of Example 5 was prepared by further adding water to 5. The weight ratio of Example 5 to water contained in the test solution of Example 5 is 95: 5.

(Comparative Example 1)

According to Table 1, in the case of excluding limonene, it is the same as the manufacturing method of Examples 1 to 4, except that only the other component (s) except limonene is mixed when preparing the engine room detergent composition.

(Comparative Example 2)

According to Table 1, in the case of excluding the hydrogenated 1,3-xylene, except for mixing the remaining component (s) except the hydrogenated 1,3-xylene when preparing the engine room detergent composition, Examples 1 to 4 It is the same as the manufacturing method.

(Comparative Example 3)

According to Table 1, when hexane is excluded, except for mixing the remaining component (s) except hexane when preparing the engine room detergent composition, it is the same as the manufacturing method of Examples 1 to 4.

(Comparative Example 4)

According to Table 1, in the case of excluding the branched undecane, except for mixing the remaining component (s) excluding the branched undecane when preparing the engine room detergent composition, it is the same as the production method of Examples 1 to 4.

(Comparative Example 5)

According to Table 1, when adding paraffin oil (kerosene) instead of hydrogenated 1,3-xylene except limonene, paraffin oil (kerosene) is added instead of hydrogenated 1,3-xylene when preparing the engine room detergent composition. And except for mixing the other component (s) except limonene, it is the same as the production method of Examples 1 to 4.

(Comparative Example 6)

According to Table 1, when adding paraffin oil (kerosene) instead of hydrogenated 1,3-xylene, only adding and mixing paraffin oil (kerosene) instead of hydrogenated 1,3-xylene when preparing the engine room detergent composition Except, it is the same as the manufacturing method of Examples 1-4.

(Test Example)

The properties of the prepared engine room detergent composition were evaluated as follows.

Solution stability

In order to evaluate the solution stability of the prepared engine room detergent composition, the condition of the solution was visually confirmed after heating the detergent to a temperature of 40 ° C. As a result, it was confirmed that the engine room cleaner compositions prepared in Examples 1 to 5 and Comparative Examples 1 to 6 all maintained a transparent state without separation (precipitation). In particular, in the case of Example 5, Example 5 maintained a somewhat opaque but stable state despite adding more water to the prepared engine room detergent composition by containing a surfactant component.

safety

The engine room detergent composition should have low flammability to protect the safety of workers during work, and must have a long volatilization time to prevent the object to be cleaned (corrosion) due to the high volatility of the engine room detergent composition. . Therefore, in order to confirm the safety of the engine room detergent composition, the flash point and volatile time of the prepared engine room detergent composition were analyzed.

First, in order to evaluate the flash point of the engine room detergent composition, the flash point was analyzed using a tag sealed test apparatus. As a result, it was confirmed that Examples 1 to 5 had a relatively safe flash point of about 80 ° C or higher.

In addition, in order to analyze the volatilization time of the engine room detergent composition, a Petri dish and an electronic balance (0.01 g to 220 g) were prepared, and the test was conducted at room temperature. After placing the petri dish on the electronic scale to zero, the 10 g engine room cleaner composition was put on the petri dish. Then, the time taken until the engine room detergent composition volatilized to 1.0 g was measured. Based on the measured volatilization time of the engine room cleaner composition, the attack safety of the engine room cleaner composition to be cleaned (especially the circuit of the electric system inside the engine room) was analyzed, and the evaluation criteria and results are shown in Table 1. I did. As shown, Examples 1 to 5, compared to Comparative Examples 4 to 6, has a very long volatility rate, it was confirmed that it is very safe.

Blowing force evaluation

In order to evaluate the spraying power of the engine room cleaner composition, an acrylic plate with two holes on one side (10 cm × 10 cm × 5 mm × 1 thick), nylon string (2 m × 2), and nylon string were hung. A stand (4 pieces) to be fixed was prepared. Two nylon strings were passed through each hole of the PVC specimen, and both ends of the nylon strings were connected to the stand and fixed. The stand was installed so that the width of the two nylon strings was similar to that of the PVC substrate and kept parallel to each other, and the nylon string and the floor were positioned horizontally at a height of 50 cm from the ground. In addition, the engine room detergent composition was placed in a compressed injector (capacity: 2L, maximum discharge pressure: 3kg / cm ² ) to be located about 10cm away from the PVC specimen.

The blowing power of the engine room cleaning agent composition was evaluated by measuring the distance pushed by the cleaning agent composition, which was sprayed with the PVC specimen suspended from the initial position, after spraying the cleaning agent for 3 seconds. As the measured value, an average value repeated 10 times was used, and evaluation criteria and results are shown in Table 1.

As shown, Examples 1 to 5, which are engine room cleaner compositions comprising hydrogenated 1,3-xylene, limonene, branched undecane, cyclohexane and hexane substituted with one or two methyl groups, all have high jetting properties. (Long injection distance of 70 cm or more), it can be seen that, instead of limonene engine room cleaner composition Comparative Example 1, hexane-free engine room cleaner composition Comparative Example 4 and hydrogenation 1,3-xylene instead Thus, it can be seen that Comparative Examples 5 to 6, which are engine room cleaner compositions containing paraffin oil (kerosene), have relatively low injection characteristics (short injection distance of less than 70 cm).

Evaluation of cleaning properties

In order to perform an evaluation of the cleaning properties of the engine room cleaner composition against the grease contaminants, waste engine oil was prepared as iron fragments (width 5 cm x length 5 cm x thickness 2 mm) and grease contaminants. The evaluation of the cleaning properties was performed using an engine room cleaner composition left at room temperature of 25 ° C and an engine room cleaner composition heated to a mild temperature of 35 ° C, and was measured by applying a commonly used gravimetric method. After uniformly applying grease contaminants to metal specimens, dry them in an oven at 30 ° C for 30 minutes, measure the weight of the specimens, and repeat the application and drying so that 30mg (error range ± 0.5mg) contaminants accumulate on the specimens. A specimen with a contaminant source was prepared.

In the cleaning method, the engine room cleaning agent composition was put in a compression injector, and the engine room cleaning agent composition was sprayed for 30 seconds at a location 10 cm away from the specimen with a contaminant attached thereto, dried, and the residual contamination amount of the sample was measured in 0.1 mg units.

The cleaning efficiency was determined using the following equation (1) after measuring the weight of the specimen with the contaminant before the test and the weight of the specimen after the test, and the evaluation criteria and results are shown in Table 1.

Cleaning efficiency (%) = (A-B) / A × 100 (1)

Where A is the weight of the specimen with the contaminant attached before the test, and B is the weight of the specimen after the test.

As can be seen from the results, it can be seen that Examples 1 to 5, which are engine room cleaner compositions according to the present invention, have excellent cleaning properties as a whole compared with 1 to 6 in comparison. In particular, it can be seen that the engine room cleaner composition used by warming to lukewarm exhibits significantly improved overall cleaning properties than the engine room cleaner composition left at room temperature.

Anti-corrosion and anti-static effect (Example 5)

The engine room cleaner composition of Example 5 may further have an effect of preventing corrosion and preventing correcting (anti-static) by further containing a surfactant component (polyoxyethylene-based nonionic surfactant and imidazoline-based cationic surfactant). . In order to confirm the additional effect of Example 5, corrosion and antistatic (antistatic) evaluation of Example 5 was additionally performed.

i) Evaluation of corrosion protection properties

In order to evaluate the anti-corrosion properties of the engine room cleaner composition for the interior parts of the engine room, both surfaces of iron pieces (1 cm x 1 cm x 1 cm x 2 mm thick) used in the evaluation of cleaning properties were prepared by grinding with sandpaper. In consideration of the average engine room cleaning time, the prepared specimen (iron piece) was immersed in the engine room cleaning agent composition for 30 minutes and then taken out and dried at room temperature. Thereafter, the cleaned-dried specimen was stored for 10 days in a thermo-hygrostat with extreme corrosion environmental conditions (temperature 50 ℃, relative humidity 80%), and then visually inspected whether a red rusty portion (corrosion) occurred on the specimen surface. Was observed. As a result, it can be seen that Example 5 has excellent non-corrosion (anti-corrosion) properties with no color variations.

ii) Evaluation of antistatic properties

In order to confirm the antistatic effect of the prepared engine room cleaner composition, iron fragments (1 cm × 1 cm × 2 mm thick) used in the evaluation of cleaning properties were prepared. Considering the average engine room cleaning time, each specimen (iron piece) was immersed in the engine room cleaning agent composition for 30 minutes and then taken out and dried at room temperature. This was rubbed five times with a microfiber made of polyester, and then static electricity was measured using a static electricity meter (FMX-004, SIMCO). As a result, in Example 5, a weak static electricity of about 7.5 V was measured.

As described above, in the present invention, it has been described by specific matters and limited embodiments and drawings, which are provided to help the overall understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention Various modifications and variations can be made by those skilled in the art.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent or equivalent to the scope of the claims as well as the claims to be described later belong to the scope of the spirit of the invention. .

Claims (22)

(a) hydrogenation 1,3-xylene;
(b) limonene;
(c) C8-C14 branched alkanes;
(d) cyclohexane substituted with one or two or more alkyl groups of C1-C3; And
(e) hexane or heptane solvent;
Engine room cleaner composition comprising a. According to claim 1,
The C8-C14 branched alkanes are C10-C12 branched alkane engine room cleaner compositions. According to claim 2,
The C10-C12 branched alkanes are branched undecane engine room cleaner compositions. According to claim 1,
The cyclohexane substituted with one or two or more alkyl groups of C1-C3 is cyclohexane substituted with one or two methyl groups. According to claim 1,
The content of the hydrogenated 1,3-xylene in the composition is the engine room cleaner composition that is included in 0.1 to 10% by weight of the total weight of the composition. According to claim 1,
The content of limonene in the composition is the engine room cleaner composition that is included in 0.1 to 15% by weight of the total weight of the composition. According to claim 1,
The composition (c) C8-C14 branched alkanes and (e) hexane or heptane solvent weight ratio of 1: 0.1 to 1: 1 engine room cleaner composition. According to claim 1,
(a) hydrogenation 1,3-xylene;
(b) limonene;
(c) branched undecane;
(d) methylcyclohexane; And
(e) hexane;
Engine room cleaner composition comprising a. According to claim 1,
The boiling point at normal pressure of the composition is an engine room cleaner composition, characterized in that 72 to 225 ° C. According to claim 1,
The composition is an engine room detergent composition further comprising a nonionic surfactant or a cationic surfactant. The method of claim 10,
The nonionic surfactant is a polyoxyethylene-based nonionic surfactant having an HLB of 5 or less. The method of claim 10,
The cationic surfactant is an imidazoline-based cationic surfactant, engine room cleaner composition. According to claim 1,
The detergent composition is an engine room detergent composition for spray injection.  a) spraying the engine room cleaner composition according to any one of claims 1 to 13 into the engine room; the engine room cleaning method comprising a. The method of claim 14,
The a) step of spraying is a method of cleaning the engine room spray spray. The method of claim 14,
The engine room is a method of cleaning the engine room, characterized in that the engine room of the vehicle environment. The method of claim 14,
The engine room cleaner composition of step a) is a method of cleaning an engine room in a state heated to a warm temperature of 30 to 40 ° C. In the engine room cleaning composition spray gun (A) and the engine room cleaning apparatus having a cleaning air / engine room cleaner composition spray gun (B),
An engine room cleaner composition supply unit for supplying an engine room cleaner composition according to any one of claims 1 to 13;
An engine room cleaner composition heating unit that warms the engine room cleaner composition according to any one of claims 1 to 13 to a required working temperature;
A washing air compressor unit that supplies washing air;
It includes; a washing device control unit for controlling the operation of the washing device by receiving and transmitting data between each component of the engine room cleaning agent composition supply unit and the cleaning air compressor unit;
The engine room cleaner composition spray gun (A) sprays the engine room cleaner composition supplied from the engine room cleaner composition supply unit, and the cleaning air / engine room cleaner composition spray gun (B) supplies the engine room cleaner composition And an engine room cleaning agent composition supplied from the unit and a nozzle for simultaneously spraying cleaning air supplied from the cleaning air compressor unit. The method of claim 18,
The engine room detergent composition supply unit includes an engine room detergent composition storage container for storing the engine room detergent composition;
A first filter for filtering impurities in the engine room cleaner composition in the engine room cleaner composition storage container;
A first moisture sensor that detects moisture in the engine room detergent composition storage container;
A flow sensor that controls the supply of the engine room detergent composition; And
A first pump for supplying the engine room cleaner composition from the engine room cleaner composition storage container to the engine room cleaner composition heating unit; Engine room cleaning device comprising a The method of claim 18,
The engine room detergent composition heating unit includes: a heat exchanger that controls the temperature of the engine room detergent composition supplied from the engine room detergent composition supply unit;
An injection tube through which the engine room cleaner composition is supplied from the engine room cleaner composition supply unit to the engine room cleaner composition heating unit;
A discharge pipe through which the engine room cleaner composition is supplied from the engine room cleaner composition heating unit to a washing air compressor unit;
A first thermometer that senses the temperature of the engine room detergent composition flowing in the discharge pipe;
A second thermometer for sensing the temperature of the engine room detergent composition flowing in the injection tube;
A third thermometer that senses the temperature of the engine room cleaner composition flowing into the heat exchanger; And
A fourth thermometer that senses the temperature outside the heat exchanger; Engine room cleaning device comprising a. The method of claim 18,
The air compressor unit for washing, an air compressor for supplying air for washing;
A solenoid valve that controls the supply of the engine room detergent composition supplied from the heating unit to the air compressor unit for washing;
A plunger pump for supplying the engine room cleaner composition in the heating unit to the engine room cleaner composition spray gun (A) and the cleaning air / engine room cleaner composition spray gun (B);
A mixing valve installed between the air compressor and the plunger pump to adjust the pressure of the washing air supplied from the air compressor to the air / engine room cleaner composition spray gun (B);
A second filter that filters impurities in the washing air supplied from the air compressor; And
A second moisture sensor for sensing moisture in the washing air supplied from the air compressor; Engine room cleaning device comprising a. The method of claim 18,
The engine room cleaning device includes a leakage current detection unit that detects leakage current leaking from the engine room and leakage current leaking from the air compressor, first pump and plunger pump of the engine room cleaning device, and connected to a ground unit. Engine room cleaning device, characterized in that the structure.

Images