Water-based polyol engine air intake synergistic liquid and preparation method thereof

Abstract

The invention discloses a water-based polyol engine air intake synergistic liquid and a preparation method thereof, and belongs to the technical field of internal combustion engine energy conservation, the water-based polyol engine air intake synergistic liquid comprises the following components: a basic solvent, a glycerol-carboxylate catalytic system, alkyl glycoside, an anti-settling agent, a pH buffer agent and a low-temperature fluidity improver. By optimizing atomization through the surfactant, utilizing micro-explosion of water and a low-boiling-point solvent to promote evaporation and mixing, and under the guarantee of the anti-settling agent, the buffering agent and the low-temperature improver, more sufficient fuel oil atomization, more uniform mixed gas and faster and more complete combustion are synergistically realized by virtue of catalytic combustion and oxygen supply effects of a glycerol-sodium formate system; and finally, triple effects of engine cleaning, energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of energy saving of internal combustion engines and relates to a water-based polyol engine intake synergistic fluid and a preparation method thereof. Background Art

[0002] Engine intake enhancer is an additive used to improve engine performance. It mainly improves the engine's operating condition by optimizing fuel combustion efficiency. It can remove carbon deposits, improve fuel atomization, and enhance the fuel-air mixing ratio, thereby improving the engine's power output and fuel economy.

[0003] Existing engine intake boosters mostly use nonylphenol polyoxyethylene ether series (NP series) as surfactants, which have the problem of bioaccumulation toxicity; pure alcohol (such as methanol) engine intake boosters without adding surfactants are prone to corroding metals and swelling rubber. Summary of the Invention

[0004] The purpose of the present invention is to provide a water-based polyol engine intake synergistic fluid and a preparation method thereof, which solves the above-mentioned problems.

[0005] The technical solution adopted in the present invention is as follows: A water-based polyol engine intake synergist comprises the following components: a base solvent, a glycerol-carboxylate catalytic system, an alkyl glycoside, an anti-settling agent, a pH buffer, and a low-temperature fluidity improver.

[0006] Furthermore, the glycerol-carboxylate catalytic system includes glycerol and sodium formate. Glycerol and sodium formate are rich in oxygen atoms within their molecules. During pyrolysis or combustion, they release active oxygen, locally increasing the oxygen partial pressure, particularly in fuel-rich areas (oxygen-deficient areas). Their decomposition replenishes oxygen, promoting further oxidation of incomplete combustion products.

[0007] Furthermore, the aqueous polyol engine intake synergist comprises the following components by weight: 45-60 parts base solvent, 20-30 parts glycerin, 1-2.5 parts sodium formate, 0.2-1.5 parts alkyl glycoside, 0.1-0.3 parts anti-settling agent, 0.8-2 parts pH buffer, and 8-12 parts low-temperature fluidity improver. This formulation is a preferred embodiment of the present invention; in actual use, the appropriate proportions can be adjusted based on different engine operating conditions.

[0008] Furthermore, the anti-settling agent is hydroxyethyl cellulose.

[0009] Furthermore, the pH buffer is sodium acetate.

[0010] Furthermore, the low-temperature fluidity improver is isopropyl alcohol.

[0011] Furthermore, the base solvent is ultrapure water.

[0012] Furthermore, the alkyl carbon chain length of the alkyl glycoside is C8-C10, and the HLB value is 12.5-14.5.

[0013] A method for preparing a water-based polyol engine intake synergistic fluid comprises the following steps: S1. Obtaining raw materials: using ultrapure water as the base solvent, glycerol and sodium formate as the glycerol-carboxylate catalyst system, alkyl polyglycoside as the surfactant, hydroxyethyl cellulose as the anti-settling agent, sodium acetate as the pH buffer, and isopropyl alcohol as the low-temperature fluidity improver; S2. After ultrapure water is superheated to 50±2°C, hydroxyethyl cellulose is added and stirred evenly to obtain a first intermediate. The transmittance of the first intermediate at a wavelength of 600 nm is greater than 95%; S3. Add glycerol and isopropanol to the first intermediate, maintain stirring at 45° C. for 15 minutes to obtain a second intermediate; S4. Sodium formate and sodium acetate were added to the second intermediate, and the mixture was ultrasonically treated at 40 kHz for 10 min until the conductivity was ≤50 μS / cm to obtain a third intermediate; S5. After cooling the third intermediate to 30° C., alkyl glycoside is added thereto, and the mixture is aged in the dark for 36 hours to obtain an engine intake manifold injection liquid.

[0014] Furthermore, the atomized particle size Dv90 of the engine intake manifold injection liquid is ≤10 μm, and the injection pressure is 0.2 MPa.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A water-based polyol engine intake booster fluid uses an alkyl polyglycoside as a surfactant, replacing the existing NP series surfactant. Based on the OECD 301F standard, it has a biodegradability rate of >98%, avoiding the problem of bioaccumulation and toxicity. 2. The glycerol-carboxylate system of the present invention generates free radicals, active small molecules, and an alkaline environment through a high-temperature reaction. The synergistic effect significantly promotes combustion speed and completeness, and effectively cleans carbon deposits, inhibits the formation of new deposits, and neutralizes acidic corrosives. 3. The hydroxyl groups in the glycerol of the present invention form a hydrogen bond network with water molecules. Under high temperature, the water vaporizes instantly, triggering a micro-explosion. The explosive force breaks up the encapsulated fuel droplets, exposing the carbon deposit surface, allowing the active components to directly contact and soften the carbon deposit layer. 4. This invention optimizes atomization through surfactants, utilizes the micro-explosion of water and low-boiling-point solvents to promote evaporation and mixing, and leverages the catalytic combustion and oxygen supply of the glycerol-sodium formate system. Furthermore, with the support of anti-settling agents, buffers, and low-temperature modifiers, these methods synergistically achieve more complete fuel atomization, a more uniform mixture, and faster and more complete combustion, ultimately achieving the triple benefits of engine cleaning, energy conservation, and emission reduction. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. That is, the embodiments described are only part of the embodiments of the present invention, rather than all embodiments.

[0017] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0018] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0019] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0020] Example 1: A preferred embodiment of the present invention provides an aqueous polyol engine intake synergistic fluid, comprising the following components in parts by weight: 45 parts of ultrapure water, 20 parts of glycerol, 1 part of sodium formate, 0.2 parts of alkyl glycoside, 0.1 parts of hydroxyethyl cellulose, 0.8 parts of sodium acetate, and 8 parts of isopropyl alcohol.

[0021] The alkyl carbon chain length of the alkyl glycoside is C8-C10, and the HLB value is 12.5-14.5.

[0022] The method for preparing the aqueous polyol engine intake synergistic fluid comprises the following steps: S1. Obtaining raw materials: using ultrapure water as the base solvent, glycerol and sodium formate as the glycerol-carboxylate catalyst system, alkyl polyglycoside as the surfactant, hydroxyethyl cellulose as the anti-settling agent, sodium acetate as the pH buffer, and isopropyl alcohol as the low-temperature fluidity improver; S2. After ultrapure water is superheated to 50±2°C, hydroxyethyl cellulose is added and stirred evenly to obtain a first intermediate. The transmittance of the first intermediate at a wavelength of 600 nm is greater than 95%; S3. Add glycerol and isopropanol to the first intermediate, maintain stirring at 45° C. for 15 minutes to obtain a second intermediate; S4. Sodium formate and sodium acetate were added to the second intermediate, and the mixture was ultrasonically treated at 40 kHz for 10 min until the conductivity was ≤50 μS / cm to obtain a third intermediate; S5. After cooling the third intermediate to 30° C., alkyl glycoside is added thereto, and the mixture is aged in the dark for 36 hours to obtain an engine intake manifold injection liquid.

[0023] The atomized particle size Dv90 of the engine intake manifold injection liquid is ≤10 μm, and the injection pressure is 0.2 MPa.

[0024] Example 2: This example is based on Example 1, but differs from Example 1 in that this example provides an aqueous polyol engine intake synergistic fluid, comprising the following components in parts by weight: 52.5 parts of ultrapure water, 25 parts of glycerol, 1.8 parts of sodium formate, 0.8 parts of alkyl glycoside, 0.2 parts of hydroxyethyl cellulose, 1.4 parts of sodium acetate, and 10 parts of isopropyl alcohol.

[0025] Example 3: This example is based on Example 1, but differs from Example 1 in that this example provides an aqueous polyol engine intake synergistic fluid, comprising the following components in parts by weight: 60 parts of ultrapure water, 30 parts of glycerol, 2.5 parts of sodium formate, 1.5 parts of alkyl glycoside, 0.3 parts of hydroxyethyl cellulose, 2 parts of sodium acetate, and 12 parts of isopropyl alcohol.

[0026] Comparative Example 1: This example is based on Example 1, but differs from Example 1 in that nonylphenol polyoxyethylene ether is used instead of alkyl glycoside.

[0027] Comparative Example 2: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain alkyl glycoside.

[0028] Comparative Example 3: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain glycerol.

[0029] Comparative Example 4: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain sodium formate.

[0030] Comparative Example 5: This embodiment is based on Example 1, but differs from Example 1 in that deionized water is used instead of ultrapure water.

[0031] Comparative Example 6: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain hydroxyethyl cellulose.

[0032] Comparative Example 7: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain sodium acetate.

[0033] Comparative Example 8: This example is based on Example 1, but differs from Example 1 in that this comparative example does not contain isopropyl alcohol.

[0034] Test Example 1: Bench testing was conducted on an engine using the base fuel plus the synergists of Examples 1-3 and Comparative Examples 1-8. A blank control group consisted of an engine using only the base fuel without the synergist. Test items included soot emission reduction (referenced to GB 3847-2018, compared to the blank control group), intake valve deposit removal rate (referenced to CEC F-20-A-98, 5000km road test), fuel economy improvement (using the World Harmonized Light Vehicle Test Cycle (WLTC) on a dynamometer, comparing fuel consumption per 100km between the blank and synergist-added groups), and metal corrosion rate (referenced to ASTM D130, copper strip test). The results are shown in Table 1.

[0035] Table 1 Bench test

[0036] Test Example 2: The stability and environmental friendliness of the synergists of Examples 1-3 and Comparative Examples 1-8 were tested. The results are shown in Table 2.

[0037] Stability test: The reference standard is ASTM D4176, which tests whether there is delamination in the range of -20℃ to 80℃.

[0038] Environmental protection: whether it complies with EU REACH / EPA certification standards.

[0039] Table 2 Environmental protection and stability test results

[0040] Combining the data in Table 1 and Table 2, it can be seen that the synergist of the present invention has excellent performance, solves the problem that existing synergists cannot simultaneously meet the requirements of environmental protection, stability, low corrosion, etc., and the synergist of the present invention has good comprehensive performance.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water-based polyol engine intake synergistic fluid, characterized by: The invention comprises the following components: a basic solvent, a glycerol-carboxylate catalyst system, an alkyl glycoside, an anti-settling agent, a pH buffer, and a low-temperature fluidity improver.

2. The aqueous polyol engine intake synergistic fluid according to claim 1, characterized in that: The glycerol-carboxylate catalytic system comprises glycerol and sodium formate.

3. The aqueous polyol engine intake synergistic fluid according to claim 2, characterized in that: The invention comprises the following components in parts by weight: 45-60 parts of a base solvent, 20-30 parts of glycerol, 1-2.5 parts of sodium formate, 0.2-1.5 parts of an alkyl glycoside, 0.1-0.3 parts of an anti-settling agent, 0.8-2 parts of a pH buffer, and 8-12 parts of a low-temperature fluidity improver.

4. The aqueous polyol engine intake synergistic fluid according to claim 3, characterized in that: The anti-settling agent is hydroxyethyl cellulose.

5. The aqueous polyol engine intake synergistic fluid according to claim 3, characterized in that: The pH buffer is sodium acetate.

6. The aqueous polyol engine intake synergistic fluid according to claim 3, characterized in that: The low temperature fluidity improver is isopropyl alcohol.

7. The aqueous polyol engine intake synergistic fluid according to claim 3, characterized in that: The base solvent is ultrapure water.

8. The aqueous polyol engine intake synergistic fluid according to claim 3, characterized in that: The alkyl carbon chain length of the alkyl glycoside is C8-C10, and the HLB value is 12.5-14.

5.

9. The method for preparing a water-based polyol engine intake synergistic fluid according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Obtaining raw materials: using ultrapure water as the base solvent, glycerol and sodium formate as the glycerol-carboxylate catalyst system, alkyl polyglycoside as the surfactant, hydroxyethyl cellulose as the anti-settling agent, sodium acetate as the pH buffer, and isopropyl alcohol as the low-temperature fluidity improver; S2. After ultrapure water is superheated to 50±2°C, hydroxyethyl cellulose is added and stirred evenly to obtain a first intermediate. The transmittance of the first intermediate at a wavelength of 600 nm is greater than 95%; S3. Add glycerol and isopropanol to the first intermediate, maintain stirring at 45° C. for 15 minutes to obtain a second intermediate; S4. Sodium formate and sodium acetate were added to the second intermediate, and the mixture was ultrasonically treated at 40 kHz for 10 min until the conductivity was ≤50 μS / cm to obtain a third intermediate; S5. After cooling the third intermediate to 30° C., alkyl glycoside is added thereto, and the mixture is aged in the dark for 36 hours to obtain an engine intake manifold injection liquid.

10. The water-based polyol engine intake synergistic fluid according to claim 1, characterized in that: The atomized particle size Dv90 of the engine intake manifold injection liquid is ≤10 μm, and the injection pressure is 0.2 MPa.

Images