JPH101698A - Detergent for fuel system part of engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare the subject detergent, comprising a specific terperne compound, a fatty acid, a specific alkaline agent, a specified solvent, a surfactant and water and capable of cleaning fuel system parts of an engine in an automobile in their intact state without carrying out the disassembling thereof and having sufficient cleaning effects. SOLUTION: This detergent for fuel system parts of an engine comprises (A) a terpene hydrocarbon such as α- or β-pinene or α-limonene or a terpene alcohol such as terpineol, (B) a fatty acid, e.g. the one containing >=40wt.% oleic acid, (C) aqueous ammonia or an amine, (D) a glycol ether or its acetate- based solvent (e.g. a 3-8C one), (E) a petroleum-based solvent such as an aromatic hydrocarbon, (F) a surfactant and (G) water. The respective amounts of the contained components are preferably 2-50wt.% component A, 2-20wt.% component B, 10-50wt.% component D, 2-40wt.% component E, 2-15wt.% component F, 10-40wt.% component G and the component C is contained in an equiv. amount of 1-8 times based on the component B expressed it terms of the chemical equiv. thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent which can be used by directly spraying it into a carburetor of an engine, and which can be used even when added to fuel.

[0002]

2. Description of the Related Art As a conventional method for cleaning fuel-related parts of an engine, there are (1) a method of disassembling and cleaning fuel-related parts;
(2) A method in which a cleaning agent mainly containing an aromatic solvent, a fatty acid, and an alcohol solvent is directly sprayed into the carburetor. (3) An aromatic organic solvent, a fatty acid, an ether solvent, a surfactant, and water. For example, a method of directly spraying a cleaning agent mainly composed of a carburetor into a carburetor is used.

[0003]

However, these methods have drawbacks. That is, in the method (1), the disassembling and assembling operations require skill and are difficult. In the methods (2) and (3), since the organic solvent and the surfactant are contained in a large amount, the exhaust gas has a strong odor and a sufficient cleaning effect cannot be obtained only by the dissolving power of the organic solvent.

The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. An object of the present invention is to provide a cleaning agent for a fuel system component.

[0005]

In order to solve the above-mentioned problems, the present invention provides a terpene hydrocarbon and / or terpene alcohol, a fatty acid, an aqueous ammonia and / or an amine, a glycol ether and / or an acetate solvent, a petroleum solvent. , A detergent for a fuel system component of an engine, comprising a surfactant and water.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The terpene hydrocarbon of the terpene hydrocarbon, a terpene alcohol which is one component of the present invention, swells or dissolves a dirt component such as carbon on the metal surface of the carburetor of the engine and functions to peel off from the metal surface. Essential oil obtained by steam distillation of raw pine resin collected from stands of Pinus densiflora and Japanese black pine from North America and mainland China, essential oil by-produced in the pulp industry, or essential oil extracted from orange peel or isomerized from these essential oils It is a compound induced by a reaction or the like.

The terpene hydrocarbons having 10 carbon atoms include minsen, kalen, pinene, limonene, terpinolene, camphene, terpinene, tricyclene, fenchen, ferrandrene, sabinene, P-menthen-
1, P-menthen-3, P-cymene, P-menthan and the like.

In particular, α-pinene, β-pinene, α
-Limonene, P-Menten-1, P-Menten-3, P
-Cymen and P-menthan are preferred.

Examples of the terpene alcohol having 10 carbon atoms include citronellol, pinocamperol, geraniol, fentyl alcohol, nerol, borneol, linalool, menthol, terpineol, twill alcohol, P-mentanol, and the like.

Of these, terpineol and P-mentanol are particularly preferred.

The amount of these terpene compounds is 2 to 5
The content is 0% by weight, and particularly preferably 5 to 40% by weight.
If the amount of the terpene compound is less than 2% by weight, a sufficient cleaning effect cannot be obtained. If it exceeds 50% by weight, the balance between the terpene compound, the surfactant, the water and the petroleum solvent or the like will be lost, and the cleaning effect will be reduced.

The above fatty acid is saponified with ammonia water and / or an amine in a detergent and acts as a dispersant and a detergent. In particular, it is sufficient to contain oleic acid in an amount of 40% or more. Detergency can be obtained. Such a fatty acid is contained in the cleaning agent of the present invention in an amount of 2 to 20% by weight. If it is less than 2%, sufficient detergency cannot be obtained, and if it exceeds 20%, the balance with terpene compounds, petroleum solvents, surfactants, etc. will be lost and the detergency will be reduced.

Further, the above-mentioned aqueous ammonia or amine is saponified in the above-mentioned fatty acid and detergent, and functions as a detergent and a dispersant. Such ammonia water or amine is used as a chemical equivalent of 1 to 8 fatty acids.
It is contained in a double equivalent. If this is less than 1 equivalent, all fatty acids cannot be saponified, and a sufficient washing effect cannot be obtained. Exceeding 8 equivalents increases the odor and causes corrosion of brass parts and the like. Examples of the amine include alkylamines having 1 to 10 carbon atoms and 2 to 10 carbon atoms.
Or one or more selected from alkanolamines and morpholine. In the present invention, these aqueous ammonia or amine can be used alone or both can be used together.

Further, the above-mentioned glycol ether and / or its acetate-based solvent dissolves dirt and acts as a penetrant. Examples of such glycol ethers or acetate solvents thereof include ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol ethyl ether acetate, ethylene glycol butyl ether, ethylene glycol isobutyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, and propylene glycol methyl ether. 3 to 8 carbon atoms
Glycol ether or an acetate solvent thereof. Those having more than 8 carbon atoms have insufficient dissolving power and penetrating power. Such a glycol ether and its acetate-based solvent are contained in the cleaning agent of the present invention in a weight ratio of 10 to 50%. If it is less than 10%, sufficient dissolving power and penetrating power cannot be obtained, and if it exceeds 50%, a sufficient washing effect cannot be obtained due to a synergistic effect with the saponified fatty acid. In the present invention, such a glycol ether or its acetate can be used alone or both can be used together.

The above-mentioned petroleum-based solvent works to further enhance the washing effect by the synergistic effect of the above-mentioned glycol ether and its acetate-based solvent with a saponified fatty acid, and aromatic hydrocarbons are particularly effective. . Examples of the aromatic hydrocarbon solvent include xylene and toluene. In the present invention, one or more selected from these are used. Such a petroleum-based solvent is contained in the cleaning agent by 2 to 40% by weight. If it is less than 3%, sufficient detergency cannot be obtained, and if it exceeds 40%, the balance with the terpene compound, water, surfactant and the like will be lost, and the detergency will be reduced.

Further, the above-mentioned surfactant acts as a compatibilizer and regulates foaming properties. Examples of such surfactants include nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkylamine, polyglycerin fatty acid ester, and sorbitan fatty acid ester, and higher alcohol sulfate salts. Anionic surfactants such as alkylbenzenesulfonates and dialkylsulfosuccinates are exemplified. Such a surfactant is contained in the detergent at a weight ratio of 2 to 15%. If it is less than 2%, there is no effect as a compatibilizing agent and a foaming regulator, and if it exceeds 15%, the balance with the terpene compound, water, and the hydrocarbon solvent is lost, and the detergency decreases.

The above-mentioned water has an effect of removing water-soluble dirt components, and further has an effect of promoting foaming when the above-mentioned surfactant acts as a foaming regulator. This water content is 10 to 40% by weight in the detergent. If it is less than 10%, the effect of promoting foamability is not sufficient, and if it exceeds 40%, a sufficient cleaning effect cannot be obtained, and compatibility with the fuel is lost. In addition, there is a danger of corrosion occurring on the metal part of the intake system part.

When the cleaning agent containing the above components is directly sprayed into the carburetor, LPG, D
Spraying with a liquefied gas such as ME is preferred. On the other hand, when the detergent is directly added to the fuel, the detergent may be added in an amount of 0.1 to 5% by weight based on the fuel.

[0019]

The present invention will be further described with reference to the following examples. Each cleaning agent (Examples 1 to 6 and Comparative Examples 1 to 5) having the composition shown in Table 1 was prepared.

[0020]

[Table 1]

With respect to each of the cleaning agents in Table 1, tests were conducted for cleaning properties, gasoline compatibility, corrosiveness, foaming properties, and odor of exhaust gas. The results are shown in Table 2.

[0022]

[Table 2]

Each test method is as follows. Detergency In order to compare the detergency of contaminants such as varnish and carbon, the detergency was evaluated using a spark plug that was actually run (10,000 km) and contaminated. The contaminated plugs were immersed in each cleaning agent at room temperature (20 ° C.), taken out after a certain time (30 minutes), and the degree of removal of the contaminants was visually determined.

Judgment A: 80% or more of the pollutants are dropped. ：: About 50 to 80% of the pollutants are dropped. Δ: About 20 to 50% of the pollutants are dropped. ×: Only 20% or less of the pollutants were dropped.

Gasoline compatibility One volume of each detergent was mixed with 5 volumes of gasoline, and the compatibility with gasoline was observed (20 ° C.).

Judgment ：: Uniformly and transparently compatible. X: Cloudy or separated.

Corrosiveness A test piece of cast iron washed with acetone, then washed with ethanol and dried was immersed in each of the cleaning agents, left standing for one day, and visually judged.

Judgment ：: No corrosiveness. X: Corrosive.

Foamability 25 ml of a mixture of 88% by weight of each detergent and 22% by weight of LPG was filled into an aerosol, and the whole amount was blown into a 500-ml measuring cylinder to measure the foaming amount.

Judgment ◎: Foaming amount is 300 ml or more ：: Foaming amount is 200 to 300 ml Δ: Foaming amount is 100 to 200 ml ×: Foaming amount is 100 ml or less

Odor of Exhaust Gas 150 ml of a mixture of 88% by weight of each cleaning agent and 22% by weight of LPG was filled into an aerosol and sprayed directly from a carburetor of a gasoline engine of an automobile, and the odor of the exhaust gas was smelled. Judged.

Judgment ：: Almost no odor is generated. X: A strong odor is generated.

[0033]

By cleaning with the cleaning agent of the present invention, it is possible to clean a fuel system part of an engine of an automobile or the like without disassembling it, and to obtain a sufficient cleaning effect. Can be.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location C10L 1/22 8720-4H C10L 1/22 B 10/04 10/04 C11D 10/02 C11D 10 / 02 F02B 77/04 F02B 77/04 // (C11D 7/50 7:24 7:26 7:06 7:32)

Claims (6)

[Claims] An engine fuel comprising a terpene hydrocarbon and / or a terpene alcohol, a fatty acid, an aqueous ammonia and / or an amine, a glycol ether and / or an acetate solvent thereof, a petroleum solvent, a surfactant and water. Cleaning agent for system parts. 2. The terpene hydrocarbon and / or terpene alcohol is 2 to 50% by weight, the fatty acid is 2 to 20% by weight, the aqueous ammonia and / or the amine is 1 to 8 as the chemical equivalent of the aqueous ammonia and / or the amine.
Double equivalent, 10-50% by weight of glycol ether and / or its acetate solvent, 2-40% of petroleum solvent
% By weight, 2 to 15% by weight surfactant, and 10% water
The cleaning agent according to claim 1, wherein the cleaning agent contains about 40% by weight of the cleaning agent. 3. The cleaning agent according to claim 1, wherein the terpene-based hydrocarbon and terpene alcohol are compounds having 10 carbon atoms. 4. The method according to claim 1, wherein the fatty acid comprises oleic acid at 40% by weight.
The cleaning agent according to claim 1, which contains the above. 5. The cleaning agent according to claim 1, wherein the glycol ether and / or an acetate solvent thereof has 3 to 8 carbon atoms. 6. The cleaning agent according to claim 1, wherein the petroleum solvent is an aromatic hydrocarbon.