CN102382711B - Novel engine oil for diesel engine and preparation method thereof - Google Patents

Abstract

The invention relates to a novel engine oil for a diesel engine. The engine oil provided by the invention is prepared by mixing mineral base oil and a plurality of additives, which comprise, by weight, 80-86% of the mineral base oil, 4-6% of a viscosity index improver, 0.5-1.5% of a pour point depressant, 1.5-3% of an antioxidant, 3-6% of a detergent, 1.2-2.5% of a friction moderator, 1-3% of an extreme pressure agent, 0.01-0.06% of an antifoaming agent, 0.4-0.8% of an antirust agent and 1.5-3% of a dispersant. According to the invention, the ratio of each component is scientific. A plurality of additives and mineral base oil are mixed according to a certain proportion to prepare the finished product. Through tests, in comparison with other engine oil of the same specification, a diesel engine with the application of the product has more excellent performance than other brands, but has lower fuel oil consumption and engine oil consumption than other brands. Therefore, the novel engine oil for diesel engine in the invention has excellent performance and is convenient to use.

Description

A kind of use for diesel engine machine oil and preparation method thereof

Technical field

The invention belongs to flat mushroom cultivating technology field, especially a kind of use for diesel engine machine oil and preparation method thereof.

Background technology

Use for diesel engine machine oil is the lubricating oil of diesel engine normal operation, can play to diesel engine the effects such as lubricated, cleaning, cooling, sealing, anti-attrition.Diesel engine is the heart of vehicle, and the metallic surface of many mutual fricting movements is arranged in it, and these component movement speed are fast, environment is poor, working temperature can reach 400～600 ℃, as seen, only have qualified machine oil just can reduce the wearing and tearing of each parts of diesel engine, increase the service life.The attainable function of machine oil is as follows: 1. lubricated anti-attrition: between piston and cylinder, all exist relatively sliding fast between main shaft and bearing shell, prevent the wearing and tearing that part is too fast, need to set up oil film between two sliding surfaces, the oil film that adequate thickness arranged separates the piece surface of relatively sliding, thereby reaches the purpose that reduces wear; 2. cool: machine oil can be taken back heat sump and be distributed to help water tank cooled engine in air again.3. clean cleaning: machine oil can be taken back sump with the carbide on engine part, greasy filth, the logical circulation of wear metal particle, by flowing of lubricating oil, has rinsed the foul that produces on the part time job face.

Machine oil commonly used is mainly mineral oil and synthetic oil, and this machine oil of two types includes base oil and additive, and its mineral oil in fluid is mixed by mineral base oil and additive and makes.Although mineral oil exists a lot of shortcomings, but due to its wide material sources, cost is lower, still be widely used at present, the researchist by adjusting mineral base oil ratio and the component content of additive improve the performance of mineral oil, but show from test result analysis, from the technical parameters such as the torque of diesel engine, power, fuel oil consumption, discharging as can be known, still there are some problems in mineral oil commonly used now, is badly in need of the higher machine oil of the traditional mineral oil performance of a kind of ratio.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art part, a kind of use for diesel engine machine oil that the component collocation is reasonable, improve lubricity is provided.

The object of the present invention is achieved like this:

A kind of use for diesel engine machine oil is mixed by mineral base oil and multiple additives and makes, and it is characterized in that: the weight proportion of described mineral base oil and multiple additives is:

And the weight proportion of described mineral base oil and multiple additives is:

And described mineral base oil is made of 20～40% 150SN, 30～50% 150BS and 20～40% 500SN.

And described viscosity index improver is OCP-A, and pour point reducer is PPT148, and antioxidant is T205, and purification agent is T107.

And described friction negative catalyst is the nitrogen molybdenum match, and extreme pressure agent is T322, and kilfoam is No. 2 composite anti-foam agents, and rust-preventive agent is T706, and dispersion agent is T161B.

Another object of the present invention is to provide a kind of preparation method of use for diesel engine machine oil, and the method comprises the following steps:

⑴ add mineral base oil in the blending reactor, and heating makes fluid temperature to 60 ℃;

⑵ add successively viscosity index improver, pour point reducer, antioxidant, purification agent, friction negative catalyst, extreme pressure agent, kilfoam, rust-preventive agent and dispersion agent in the blending reactor of step ⑴, continue to make mixing liquid to be warming up to 65 ℃, stirred 40 minutes at this temperature;

⑶ be transferred to the mixing liquid of step ⑵ in the cryoprecipitation still, and precipitation is cooled to 40 ℃ and makes finished product.

Advantage of the present invention and positively effect are:

In the present invention, each component proportioning science, by a certain percentage multiple additives and mineral base oil are allocated mutually, and making finished product, evidence is compared with other machine oil with equal-specification, the performance of the diesel engine of use this product is higher than other brand, and fuel oil consumption, consumption of lubricating oil be all lower than other brands, and as seen, it is a kind of excellent performance, use for diesel engine machine oil easy to use.

Description of drawings

Fig. 1 is the moment of torsion contrast of century-old machine oil and shell machine oil;

Fig. 2 is the power contrast of century-old machine oil and shell machine oil;

Fig. 3 is the specific fuel oil consumption contrast of century-old machine oil and shell machine oil;

Fig. 4 is the variation contrast of CO content in emission product when using century-old machine oil and shell machine oil;

CO in emission product when Fig. 5 is the century-old machine oil of use and shell machine oil ₂The variation contrast of content;

O in emission product when Fig. 6 is the century-old machine oil of use and shell machine oil ₂The variation contrast of content;

Fig. 7 is the variation contrast of HC content in emission product when using century-old machine oil and shell machine oil;

Fig. 8 is the variation contrast of NOx content in emission product when using century-old machine oil and shell machine oil;

Embodiment

Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.

A kind of use for diesel engine machine oil is mixed by mineral base oil and multiple additives and makes, and it is characterized in that: the weight proportion of described mineral base oil and multiple additives is:

Preferred scheme is: the weight proportion of mineral base oil and multiple additives is:

In above-mentioned two schemes, mineral base oil is made of 20～40% 150SN, 30～50% 150BS and 20～40% 500SN.Viscosity index improver is OCP-A, and pour point reducer is PPT148, and antioxidant is T205, and purification agent is T107.The friction negative catalyst is the nitrogen molybdenum match, and extreme pressure agent is T322, and kilfoam is No. 2 composite anti-foam agents, and rust-preventive agent is T706, and dispersion agent is T161B.

The preparation method of above-mentioned use for diesel engine machine oil comprises the following steps:

⑴ add mineral base oil in the blending reactor, and heating makes fluid temperature to 60 ℃;

⑵ add successively viscosity index improver, pour point reducer, antioxidant, purification agent, friction negative catalyst, extreme pressure agent, kilfoam, rust-preventive agent and dispersion agent in the blending reactor of step ⑴, continue to make mixing liquid to be warming up to 65 ℃, stirred 40 minutes at this temperature;

⑶ be transferred to the mixing liquid of step ⑵ in the cryoprecipitation still, and precipitation is cooled to 40 ℃ and makes finished product

Simultaneous test

1. take various raw materials according to preferred version, mix standby century-old finished product according to the preparation method, fill a prescription as follows:

Above-mentioned finished product is through check, and parameter is as shown in table 1:

Project	Index	Result	Test method
				Kinematic viscosity (100 ℃) m (m 2/s)	12.5～16.3	15.7	GB/T265
Viscosity index is not less than	90	145	GB/T2541
				Flash-point ℃ is not less than	215	245	GB/T3536
Pour point ℃ is not less than	-23	-26	GB/T3536
				Moisture content %	Be not more than vestige	Vestige	GB/T260
Spumescence ml/ml is not more than	25/0150/025/0	0/00/00/0	GB/T12579
				Mechanical impurity % is not more than	0.005	0.001	GB/T511

Table 1: the parameter of standby century-old finished product

2. above-mentioned standby century-old finished product is the 15W-40 diesel engine oil, choosing shell CF-415W-40 diesel engine oil is control group, both be lubricated the test of tank deck frame, this test is evaluated by internal-combustion engine Combustion National Key Laboratory of University Of Tianjin, adopting the test diesel engine is YN4100QBZ, and the design parameter of this diesel engine sees Table 2.

Table 2: diesel engine specification

3. when test, engine first carries out the flushing of the engine of preheating and 0.5h, and then engine keeps continuous operation under stable operating mode at rotating speed, load, and test period is 10h.

Test-bed is equipped with suitable utility appliance with control engine rotating speed, load and various test parameter.

⑴ the preparation before test

Add 100 years finished products of 5L in engine, carry out engine and rinse.After flushing, emit the century-old finished product of flushing from oil pan, change all oil filter.Add century-old finished product 5L new in engine in engine.

⑵ engine starting program

Be to turn round under 1500r/min～2000r/min, fully loaded 20～30% operating modes at rotating speed, make the oil pan temperature reach 66～77 ℃ (for cold engine, the time is about 10min), then enter official test.Wherein do not charge in the official test time start time, begin timing after entering official test.

⑶ engine shutdown program

Can shut down at the duration of test engine, make engine turn round 10min, then fuel cut-off before each the shutdown under the operating mode of 1500r/min～2000r/min and zero load.Wherein do not charge to test period stop time, record each stop time and reason.

⑷ off-test

After off-test, machine oil in oil pan is all emitted, until till clean.

All identical with century-old finished product when the preparation of shell machine oil, engine starting program, engine shutdown program and off-test.

4. comparison of test results

⑴ Fig. 1, Fig. 2 and Fig. 3 are seen in the moment of torsion of 100 years machine oil and shell machine oil, power and specific fuel oil consumption contrast, and statistic data sees Table 3.

Table 3: the moment of torsion of century-old machine oil and shell machine oil, power and specific fuel oil consumption contrast

As can be known, there is larger difference in the motor performance of two kinds of machine oil from Fig. 1～3 and table 3, and the moment of torsion of century-old machine oil under same rotational speed, power are apparently higher than shell machine oil, and specific fuel oil consumption is lower than shell machine oil.

⑵ 100 years machine oil and shell machine oil CO, CO ₂, O ₂, HC, NOx discharging contrast sees Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, statistic data sees Table 4.

Table 4: century-old machine oil and shell machine oil CO, CO ₂, O ₂, HC, NOx discharge contrast

From Fig. 4～8 and table 4 as can be known, the O of century-old machine oil ₂Discharging is lower than shell machine oil, and CO discharging both is substantially the same, its excess-three kind CO ₂, HC, NOx quantity discharged be century-old machine oil higher than shell machine oil, illustrate that the state of combustion in the engine working process that adopts century-old machine oil is good, temperature of combustion is high, thereby proved moment of torsion under same rotational speed of century-old machine oil in the ⑴ item, power apparently higher than shell machine oil, and specific fuel oil consumption is lower than shell machine oil.

⑶ the specific oil consumption contrast of 100 years machine oil and shell machine oil sees Table 5.

Table 5: the specific oil consumption contrast of century-old machine oil and shell machine oil

As can be known from Table 5, after the 10h operation, the rate of consumption of century-old machine oil is significantly less than the rate of consumption of shell machine oil, and life-time service has namely been saved machine oil, has also reduced use cost.

In sum, each component proportioning science in the present invention, by a certain percentage multiple additives and mineral base oil are allocated mutually, and making finished product, evidence is compared with other machine oil with equal-specification, the performance of the diesel engine of use this product is higher than other brand, and fuel oil consumption, consumption of lubricating oil be all lower than other brands, and as seen, it is a kind of excellent performance, use for diesel engine machine oil easy to use.

Claims (3)

1. a use for diesel engine machine oil, be mixed by mineral base oil and multiple additives and make, and it is characterized in that: the weight proportion of described mineral base oil and multiple additives is:

Described mineral base oil is made of 20～40% 150SN, 30～50% 150BS and 20～40% 500SN;

Described viscosity index improver is OCP-A, and pour point reducer is PPT148, and antioxidant is T205, and purification agent is T107;

Described friction negative catalyst is the nitrogen molybdenum match, and extreme pressure agent is T322, and kilfoam is No. 2 composite anti-foam agents, and rust-preventive agent is T706, and dispersion agent is T161B.

2. a kind of use for diesel engine machine oil according to claim 1, it is characterized in that: the weight proportion of described mineral base oil and multiple additives is:

3. the preparation method of a kind of use for diesel engine machine oil according to claim 1 and 2 is characterized in that: comprise the following steps:

⑴ add mineral base oil in the blending reactor, and heating makes fluid temperature to 60 ℃;

⑵ add successively viscosity index improver, pour point reducer, antioxidant, purification agent, friction negative catalyst, extreme pressure agent, kilfoam, rust-preventive agent and dispersion agent in the blending reactor of step ⑴, continue to make mixing liquid to be warming up to 65 ℃, stirred 40 minutes at this temperature;

⑶ be transferred to the mixing liquid of step ⑵ in the cryoprecipitation still, and precipitation is cooled to 40 ℃ and makes finished product.

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