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A rapid evaluation method for in-use engine oil dilution

An evaluation method and dilution technology, applied in analytical materials, instruments, etc., can solve the problems of difficult calculation, high price, long titration time, etc., and achieve the effect of simple operation process, high degree of automation, and short test time.

Active Publication Date: 2019-05-24
金湖县综合检验检测中心
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Problems solved by technology

[0005] The invention provides a method for quickly evaluating the dilution of engine oil in use. The invention not only solves the problem of using an expensive gas chromatograph to detect the dilution of engine oil in the existing chromatographic method, but also solves the problem of low precision and poor repeatability of the spot method. problem, and finally solved the problems of long titration time, difficult calculation and poor pertinence in the existing patent method for quickly detecting the dilution ratio of engine oil

Method used

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  • A rapid evaluation method for in-use engine oil dilution
  • A rapid evaluation method for in-use engine oil dilution

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Embodiment Construction

[0032] In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations and examples.

[0033] Such as figure 1 As shown, the heating temperature of the heating furnace 1 is controlled by the temperature control knob 2, and the distillation bottle 3 is placed on the heating furnace 1 for heating. The distillation outlet is connected to the conduit 6 through the conduit plug 5, and the conduit 6 cools the steam through the condensation pipe 8 to produce a liquid that flows into the measuring cylinder 11 through the deflector 10, and the conduit 7 and the deflector 10 are fixed by the deflector plug 9; Condenser tube 8 is obliquely fixed on iron stand 12 through test tube clamp 7, and the inclination angle is controlled at 25°~30°. The coolant inlet at the lower position of condenser tube 8 is connected to cooling water through r...

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Abstract

The invention discloses an in-use vehicle engine oil dilution quick evaluation method and a testing device thereof. The method includes: using a measuring cylinder to sectionally receive in-use vehicle engine oil of V0 in total volume; dividing V1 of liquid obtained by condensing by V0 to get dilution R of detected engine oil, namely R=V1 / V0, wherein V1 refers to volume after heating and condensing, R refers to the dilution of the detected engine oil, and the larger R is, the higher the dilution is. By the method, the problem that a gas chromatograph which is high in price needs to be arranged when existing chromatography is used to detect dilution of engine oil is solved, the problem that a spot method is low in accuracy and poor in repeatability is solved, and the problem that methods for quickly detecting engine oil dilution proportion in existing patents are long in titration time, high in calculation difficulty and low in pertinence is solved.

Description

technical field [0001] The invention belongs to the technical field of detecting the dilution degree of engine oil in use, and in particular relates to a method for quickly evaluating the dilution degree of engine oil in use and a testing device thereof. Background technique [0002] Gasoline direct injection technology has the advantages of flexible and controllable fuel injection phase, high explosion pressure, and fast instantaneous response speed. In-cylinder direct injection gasoline engine has become the mainstream of the current motor vehicle market. During the injection process of gasoline in the cylinder, it is inevitable that part of the fuel will collide with the cylinder wall, so that the viscosity of the oil film on the cylinder wall that touches the gasoline will decrease and flow into the oil pan, which will eventually lead to dilution of the engine oil and make the engine unable to get Sufficient lubrication has a greater risk of damage to the engine. The au...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/16
CPCG01N7/16
Inventor 李耘吕猛常绿胡晓明刘永臣
Owner 金湖县综合检验检测中心
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