A new type of automatic test bench oil automatic supply system

Abstract

The present invention relates to the technical field of engine oil replenishment, and discloses a novel automatic bench engine oil replenishment system, comprising: an engine oil level acquisition unit for acquiring the engine oil level of the oil pan of a target diesel generator in real time; a generator operating information acquisition module for acquiring the operating information of the target diesel generator; and a byproduct content calculation module for calculating the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator based on the operating information of the target diesel generator. The present invention takes into account the effects of the engine oil usage time and the amount of oxidized deposits in the engine oil on the gap between the piston ring and the cylinder wall of the diesel generator during use. Compared with common engine oil filling control methods, the calculation result of the deposit content in the engine oil is more accurate, thereby improving the control of the engine oil filling amount and avoiding the phenomenon of insufficient lubrication due to insufficient engine oil.

Description

Technical Field

[0001] The present invention relates to the technical field of engine oil replenishment, and more particularly to a novel automatic platform engine oil replenishment system. Background Art

[0002] To solve the problem that large-displacement diesel generator sets cannot be shut down for oil filling during long-term operation, an oil supply system has been developed. A supply tank is set outside the oil pan, and the oil in the supply tank is added to the inside of the oil pan through a control unit.

[0003] However, although this method is simple, the timing and amount of oil to be added become new problems. This is because during the operation of the diesel generator, the oxidized deposits of the engine oil and the by-products produced by diesel combustion partially escape into the oil pan through the gap between the piston ring and the cylinder wall, causing the quality of the engine oil to deteriorate and reducing the lubrication effect on the piston. It is difficult for the control system and the operator to know the amount of deposits and by-products of diesel combustion in the engine oil, so it is impossible to make accurate and efficient oil filling actions. Summary of the Invention

[0004] The present invention provides a novel automatic platform oil automatic replenishing system to solve the technical problems in the above-mentioned background technology.

[0005] The present invention provides a novel automatic test bench oil automatic replenishing system, comprising:

[0006] An oil level acquisition unit, which is used to obtain the oil level of the oil pan of the target diesel generator in real time;

[0007] Generator operating information acquisition module, which is used to obtain the operating information of the target diesel generator;

[0008] The operating information of the target diesel generator includes: the service life of the diesel generator, the initial quality of the engine oil, and the engine oil oxidation rate;

[0009] a by-product content calculation module, which is used to calculate the amount of by-products generated by the combustion of diesel in the oil pan of the target diesel generator based on the operating information of the target diesel generator;

[0010] The byproduct content calculation module includes a diesel generator gap change information collection unit and a calculation unit. The diesel generator gap change information collection unit collects information on gap changes between the piston ring and the cylinder wall of the same diesel generator under normal working conditions. The calculation unit is constructed based on a long short-term memory network, and inputs the gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions and the operating information of the diesel generator, and outputs the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator.

[0011] Obtaining an engine oil quality assessment module for calculating an engine oil quality score of a target diesel generator;

[0012] The supply tank control module is used to control the amount of oil added to the oil pan by the supply tank according to the oil quality score of the oil pan.

[0013] Furthermore, the oil level height acquisition unit detects the oil level height of the oil pan of the target diesel generator by setting an oil level sensor in the oil pan of the target diesel generator.

[0014] Furthermore, the specific method for obtaining the operating information of the target diesel generator includes:

[0015] Obtain the usage time of the diesel generator through the work record book of the target diesel generator;

[0016] Obtain the viscosity and anti-wear performance of the engine oil through experiments, and calculate viscosity * first weighting factor + anti-wear performance * second weighting factor. The result is used as the initial quality of the engine oil.

[0017] The oil oxidation rate is obtained through experiments as the ratio of the oxidation amount of the same diesel generator during normal operation for one month to the total amount.

[0018] Furthermore, the diesel generator gap change information collection unit collects gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions in the following steps:

[0019] Oil and gas are input into the same diesel generator according to the oil and gas volume with the highest energy efficiency to make it work, and the pressure and gas composition in its exhaust manifold are detected. The pressure and gas composition in the exhaust manifold of the same diesel generator during initial operation are used as the initial gap between the piston ring and the cylinder wall of the target diesel generator. The difference between the pressure and gas composition in the exhaust manifold of the same diesel generator at the initial operation and the end of the operation is calculated, and the monthly average value is calculated to obtain the total gap change information and the gap change rate of the target diesel generator.

[0020] Furthermore, the computation unit includes a hidden layer and a classifier;

[0021] The target diesel generator's liquid level, diesel generator's service life, engine oil initial quality, engine oil oxidation rate, diesel generator's initial gap, and gap change rate are input into the first hidden layer, and the updated features are output;

[0022] Update the feature input classifier and output the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator.

[0023] Furthermore, the method for obtaining training samples for training the computing unit is as follows:

[0024] Step S101: select T diesel generators of the same type and fill them with the same engine oil, where T is a custom parameter;

[0025] Step S102: Using the control variable method, the operating time, initial oil quality, oil oxidation rate, initial gap, and gap change rate of T diesel generators of the same model are adjusted in sequence. The oil and gas input with the highest energy efficiency is input into the T diesel generators of the same model to enable efficient operation. Each diesel generator of the same model serves as sample data for a training sample.

[0026] Step S103 : obtaining the amount of byproducts generated by the combustion of diesel in the oil pan of each sample data as a sample label of each sample data.

[0027] Furthermore, the loss function of the computation unit is as follows:

[0028]

[0029] Where M represents the total number of training samples; y represents the amount of by-products generated by diesel combustion in the oil pan, which is the output of the calculation unit for the i-th sample; i represents the amount of by-products produced by diesel combustion in the oil pan of the i-th sample in practice.

[0030] Furthermore, the oil quality score Q quality The calculation formula is as follows:

[0031] Q quality =Q initial -(k1O rate +k2B amount +k3T use +k4log(T use ));

[0032] Where Q initial Indicates the initial quality score of the engine oil, which is preset to 1; rate Indicates the oxidation rate of engine oil; B amount represents the amount of byproducts generated by the combustion of diesel in the oil pan of the target diesel generator; T use represents the usage time of the target diesel generator; k1, k2, k3 and k4 represent the first, second, third and fourth weight parameters respectively; k1, k2, k3 and k4 are all custom parameters.

[0033] Furthermore, the oil quality assessment module includes an oxidation deposit calculation unit and a comprehensive calculation unit; the oxidation deposit calculation unit calculates the amount of oil oxidation deposits based on the working information of the diesel generator; the comprehensive calculation unit calculates the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator and the amount of oil oxidation deposits.

[0034] Furthermore, the steps for controlling the amount of oil added from the supply tank to the oil pan are as follows:

[0035] Step S201, presetting a safe engine oil level range and an optimal engine oil quality score range;

[0036] Step S202: When the oil level in the oil pan of the target diesel generator is higher than the safe oil level range, no more oil is added to the oil pan. When the oil level in the oil pan of the target diesel generator is lower than the safe oil level range, the oil supply tank is controlled to add oil so that the oil level in the oil pan of the target diesel generator is within the safe oil level range.

[0037] Step S203: When the oil level of the oil pan of the target diesel generator is within the safe oil level range, determine whether the oil score in the oil pan of the target diesel generator is within the optimal oil quality score range. If so, do not add oil; if not, add oil so that the oil level of the oil pan of the target diesel generator is at the highest point in the safe oil level range.

[0038] The beneficial effect of the present invention is that: the present invention takes into account the influence of the usage time of the engine oil and the amount of oxidized deposits in the engine oil on the gap between the piston ring and the cylinder wall of the diesel generator during the use of the diesel generator. Compared with the common oil filling control method, the result of calculating the sediment content in the engine oil is more accurate, thereby improving the control of the oil filling amount and avoiding the phenomenon of insufficient lubrication effect due to insufficient oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is an overall flow chart of the present invention.

[0040] In the figure: 10, oil level acquisition unit; 20, generator operation information acquisition module; 30, by-product content calculation module; 40, oil quality assessment module; 50, supply tank control module;

[0041] 301. Diesel generator gap change information acquisition unit; 302. Calculation unit;

[0042] 401. Oxidation sediment calculation unit; 402. Comprehensive calculation unit. DETAILED DESCRIPTION

[0043] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0044] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in one or more embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] The embodiment of the present invention is that during the continuous operation of the diesel generator, due to normal consumption, oil oxidation and by-products produced by the diesel generator combustion, the oil quality in the oil pan deteriorates and eventually fails to meet the optimal lubrication requirements of the diesel generator. The diesel generator may be in a high-speed operation state and cannot be stopped immediately to change the oil. Only partial oil can be added to the oil pan. Therefore, a new automatic test bench oil automatic supply system is proposed. Figure 1 As shown, it includes: an oil level acquisition unit 10, a generator operation information acquisition module 20, a deposition calculation module 30 and a supply tank control module 40.

[0046] To calculate the amount of dirt in the oil pan, first, it is necessary to obtain the oil level height of the oil pan of the diesel generator. Therefore, the oil level height acquisition unit 10 is used to obtain the oil level height of the oil pan of the target diesel generator in real time;

[0047] The oil level height acquisition unit 10 detects the oil level height of the oil pan of the target diesel generator by setting an oil level sensor in the oil pan. Preferably, the oil level sensor is set as a float type level sensor. In addition, thermistor type level sensor, electrode type level sensor and capacitive type level sensor can also be selected. It should be noted that the float type level sensor, thermistor type level sensor, electrode type level sensor and capacitive type level sensor all belong to the existing technology and will not be described in detail here.

[0048] Secondly, it is necessary to obtain basic information about diesel, engine oil and diesel generators. Therefore, the generator working information acquisition module 20 is used to obtain the working information of the target diesel generator;

[0049] The operating information of the target diesel generator includes: the service life of the diesel generator, the initial quality of the engine oil, and the engine oil oxidation rate;

[0050] The specific methods for obtaining the operating information of the target diesel generator include:

[0051] Obtain the usage time of the diesel generator through the work record book of the target diesel generator;

[0052] Obtain the viscosity and anti-wear performance of the engine oil through experiments, and calculate viscosity * first weighting factor + anti-wear performance * second weighting factor. The result is used as the initial quality of the engine oil.

[0053] The first weight factor and the second weight factor are both custom parameters;

[0054] Through experiments, the ratio of the oxidation amount of the same diesel generator under normal operation for one month to the total amount is obtained as the oil oxidation rate. An appropriate amount of oil is added to the diesel generator, and the diesel generator is allowed to work normally for a period of time, preferably set to 6 months. The particulate matter and coagulant in the oil are removed, and then the particulate matter in the oil (mostly by-products of diesel combustion) is removed, and then the coagulant is put into the oil. Finally, the ratio of the weight of the coagulant and the oil is calculated as the oil oxidation rate.

[0055] In addition, after obtaining the operating information of the diesel generator, the amount of byproducts generated by the combustion of diesel in the oil pan of the target diesel generator can be calculated. However, during the actual operation of the diesel generator, the amount of oxide deposits in the engine oil will to a certain extent affect the lubrication effect between the piston ring and the cylinder wall of the diesel generator, causing the gap between the piston ring and the cylinder wall to increase, thereby affecting the amount of byproducts generated by the combustion of diesel in the oil pan. Therefore, the byproduct content calculation module 30 is used to calculate the amount of byproducts generated by the combustion of diesel in the oil pan of the target diesel generator based on the operating information of the target diesel generator;

[0056] The byproduct content calculation module 30 includes a diesel generator gap change information collection unit 301 and a calculation unit 302. The diesel generator gap change information collection unit 301 collects information on gap changes between the piston ring and the cylinder wall of the same diesel generator under normal working conditions. The calculation unit 302 is constructed based on a long short-term memory network and inputs the gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions and the operating information of the diesel generator, and outputs the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator.

[0057] The steps for the diesel generator gap change information collection unit 301 to collect gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions are as follows:

[0058] Input oil and gas into the same diesel generator according to the most energy-efficient oil and gas volume to make it work, and detect the pressure and gas composition in its exhaust manifold. The pressure and gas composition in the exhaust manifold of the same diesel generator during initial operation are used as the initial gap between the piston ring and the cylinder wall of the target diesel generator. The difference between the pressure and gas composition in the exhaust manifold of the same diesel generator at the initial operation and the end of the operation is calculated, and the monthly average value is calculated to obtain the total gap change information and the gap change rate of the target diesel generator. During the above experiment, the purity of the engine oil and the height of the engine oil liquid level are always kept within the range of optimal lubrication effect. A circulating filtration system outside the oil pan or manual filtration can be used.

[0059] The computing unit 302 includes a hidden layer and a classifier;

[0060] The target diesel generator's liquid level, diesel generator's service life, engine oil initial quality, engine oil oxidation rate, diesel generator's initial gap, and gap change rate are input into the first hidden layer, and the updated features are output;

[0061] Update the feature input classifier and output the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator.

[0062] In addition, in order to improve the usability of the computing unit 302, it needs to be trained before it is used. The method for obtaining training samples for training the computing unit 302 is as follows:

[0063] Step S101: select T diesel generators of the same model and fill them with the same engine oil, where T is a custom parameter. The model and amount of engine oil filled in all diesel generators remain consistent.

[0064] Step S102: Using the control variable method, the operating time, initial oil quality, oil oxidation rate, initial gap, and gap change rate of T diesel generators of the same model are adjusted in sequence. The oil and gas input with the highest energy efficiency is input into the T diesel generators of the same model to enable efficient operation. Each diesel generator of the same model serves as sample data for a training sample.

[0065] Step S103 : obtaining the amount of byproducts generated by the combustion of diesel in the oil pan of each sample data as a sample label of each sample data.

[0066] The loss function of the calculation unit 302 is as follows:

[0067]

[0068] Where M represents the total number of training samples; y represents the amount of byproducts generated by the combustion of diesel in the oil pan, which is the output of the calculation unit 302 for the i-th sample; i represents the amount of by-products produced by diesel combustion in the oil pan of the i-th sample in practice.

[0069] Obtaining an engine oil quality assessment module 40, which includes an oxidation deposit calculation unit 401 and a comprehensive calculation unit 402; the oxidation deposit calculation unit 401 calculates the amount of oil oxidation deposits based on the operating information of the diesel generator; the comprehensive calculation unit 402 calculates the oil quality score of the target diesel generator based on the amount of diesel combustion byproducts and the amount of engine oil oxidation deposits in the oil pan of the target diesel generator;

[0070] Engine oil quality score Q quality The calculation formula is as follows:

[0071] Q quality =Q initial -(k1O rate +k2B amount +k3T use +k4log(T use ));

[0072] Where Q initial Indicates the initial quality score of the engine oil, which is preset to 1; rate Indicates the oxidation rate of engine oil; B amount represents the amount of byproducts generated by the combustion of diesel in the oil pan of the target diesel generator; T use represents the usage time of the target diesel generator; k1, k2, k3 and k4 represent the first, second, third and fourth weight parameters respectively; k1, k2, k3 and k4 are all custom parameters.

[0073] Finally, the supply tank can be controlled based on the total amount of oil in the oil pan and the current quality score of the oil. Therefore, the supply tank control module 50 is used to control the amount of oil added to the oil pan by the supply tank based on the oil quality score of the oil pan;

[0074] The steps to control the amount of oil added to the oil pan from the supply tank are as follows:

[0075] Step S201, presetting a safe engine oil level range and an optimal engine oil quality score range;

[0076] Step S202: When the oil level in the oil pan of the target diesel generator is higher than the safe oil level range, no more oil is added to the oil pan. When the oil level in the oil pan of the target diesel generator is lower than the safe oil level range, the oil supply tank is controlled to add oil so that the oil level in the oil pan of the target diesel generator is within the safe oil level range.

[0077] Step S203: When the oil level of the oil pan of the target diesel generator is within the safe oil level range, determine whether the oil score in the oil pan of the target diesel generator is within the optimal oil quality score range. If so, do not add oil; if not, add oil so that the oil level of the oil pan of the target diesel generator is at the highest point in the safe oil level range.

[0078] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A new type of automatic test bench oil automatic supply system, characterized in that: include: An oil level acquisition unit (10) for acquiring the oil level of the oil pan of the target diesel generator in real time; A generator operating information acquisition module (20) is used to obtain operating information of a target diesel generator; The operating information of the target diesel generator includes: the service life of the diesel generator, the initial quality of the engine oil, and the engine oil oxidation rate; a by-product content calculation module (30), which is used to calculate the amount of by-products generated by the combustion of diesel in the oil pan of the target diesel generator based on the operating information of the target diesel generator; The by-product content calculation module (30) includes a diesel generator gap change information acquisition unit (301) and a calculation unit (302); the diesel generator gap change information acquisition unit (301) collects gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions; the calculation unit (302) is constructed based on a long short-term memory network, inputs the gap change information between the piston ring and the cylinder wall of the same diesel generator under normal working conditions and the working information of the diesel generator, and outputs the amount of by-products generated by the combustion of diesel in the oil pan of the target diesel generator; Obtaining an engine oil quality assessment module (40) for calculating an engine oil quality score of a target diesel generator; A supply tank control module (50) is used to control the amount of oil added to the oil pan by the supply tank according to the oil quality score of the oil pan.

2. A novel automatic test bench oil automatic replenishing system according to claim 1, characterized in that: The oil level height acquisition unit (10) detects the oil level height of the oil pan of the target diesel generator by arranging an oil level sensor in the oil pan.

3. The novel automatic test bench oil automatic supply system according to claim 1 is characterized in that: The specific methods for obtaining the operating information of the target diesel generator include: Obtain the usage time of the diesel generator through the work record book of the target diesel generator; Obtain the viscosity and anti-wear performance of the engine oil through experiments, and calculate viscosity * first weighting factor + anti-wear performance * second weighting factor. The result is used as the initial quality of the engine oil. The oil oxidation rate is obtained through experiments as the ratio of the oxidation amount of the same diesel generator during normal operation for one month to the total amount.

4. The novel automatic test bench oil automatic supply system according to claim 1 is characterized in that: The steps of the diesel generator gap change information acquisition unit (301) for acquiring gap change information between the piston ring and the cylinder wall of the same type of diesel generator under normal working conditions are as follows: Oil and gas are input into the same diesel generator according to the oil and gas volume with the highest energy efficiency to make it work, and the pressure and gas composition in its exhaust manifold are detected. The pressure and gas composition in the exhaust manifold of the same diesel generator during initial operation are used as the initial gap between the piston ring and the cylinder wall of the target diesel generator. The difference between the pressure and gas composition in the exhaust manifold of the same diesel generator at the initial operation and the end of the operation is calculated, and the monthly average value is calculated to obtain the total gap change information and the gap change rate of the target diesel generator.

5. The novel automatic test bench oil automatic supply system according to claim 1 is characterized in that: The computing unit (302) includes a hidden layer and a classifier; The target diesel generator's liquid level, diesel generator's service life, engine oil initial quality, engine oil oxidation rate, diesel generator's initial gap, and gap change rate are input into the first hidden layer, and the updated features are output; Update the feature input classifier and output the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator.

6. A novel automatic test bench oil replenishment system according to claim 5, characterized in that: The method for obtaining the training samples for training the computing unit (302) is as follows: Step S101: select T diesel generators of the same type and fill them with the same engine oil, where T is a custom parameter; Step S102: Using the control variable method, the operating time, initial oil quality, oil oxidation rate, initial gap, and gap change rate of T diesel generators of the same model are adjusted in sequence. The oil and gas input with the highest energy efficiency is input into the T diesel generators of the same model to enable efficient operation. Each diesel generator of the same model serves as sample data for a training sample. Step S103 : obtaining the amount of byproducts generated by the combustion of diesel in the oil pan of each sample data as a sample label of each sample data.

7. The novel automatic test bench oil automatic supply system according to claim 6 is characterized in that: The loss function of the calculation unit (302) is as follows: Where M represents the total number of training samples; y represents the amount of by-products generated by the combustion of diesel in the oil pan, which is the output of the calculation unit (302) for the i-th sample; i represents the amount of by-products produced by diesel combustion in the oil pan of the i-th sample in practice.

8. The novel automatic test bench oil automatic supply system according to claim 1 is characterized in that: Engine oil quality score Q quality The calculation formula is as follows: Q quality =Q initial -(k1O rate +k2B amount +k3T use +k4log(T use )); Where Q initial Indicates the initial quality score of the engine oil, which is preset to 1; rate Indicates the oxidation rate of engine oil; B amount represents the amount of byproducts generated by the combustion of diesel in the oil pan of the target diesel generator; T use represents the usage time of the target diesel generator; k1, k2, k3 and k4 represent the first, second, third and fourth weight parameters respectively; k1, k2, k3 and k4 are all custom parameters.

9. The novel automatic test bench oil automatic replenishing system according to claim 1 is characterized in that: The engine oil quality evaluation module (40) comprises an oxidation deposit calculation unit (401) and a comprehensive calculation unit (402); the oxidation deposit calculation unit (401) calculates the amount of oil oxidation deposits based on the working information of the diesel generator; the comprehensive calculation unit (402) calculates the amount of byproducts generated by diesel combustion in the oil pan of the target diesel generator and the amount of engine oil oxidation deposits.

10. The novel automatic test bench oil automatic supply system according to claim 9 is characterized in that: The steps to control the amount of oil added to the oil pan by the supply tank are as follows: Step S201, presetting a safe engine oil level range and an optimal engine oil quality score range; Step S202: When the oil level in the oil pan of the target diesel generator is higher than the safe oil level range, no more oil is added to the oil pan. When the oil level in the oil pan of the target diesel generator is lower than the safe oil level range, the oil supply tank is controlled to add oil so that the oil level in the oil pan of the target diesel generator is within the safe oil level range. Step S203: When the oil level of the oil pan of the target diesel generator is within the safe oil level range, determine whether the oil score in the oil pan of the target diesel generator is within the optimal oil quality score range. If so, do not add oil; if not, add oil so that the oil level of the oil pan of the target diesel generator is at the highest point in the safe oil level range.

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