CN113309597A - Automatic measuring instrument for engine oil consumption - Google Patents

Abstract

The invention discloses an automatic measuring instrument for engine oil consumption. It is including being fixed in elevating system and the machine oil tank of weighing on the rack, still includes liquid level balancer and measuring pump, the liquid level balancer is fixed in on the elevating system, the bottom liquid level entry of liquid level balancer passes through the oil drain plug screw mouth of pipeline intercommunication engine oil pan, and the oil pipe of liquid level balancer communicates to the machine oil tank of weighing, adjusts the oil pipe mouth of pipe height of liquid level balancer through elevating system, the oil-out of machine oil tank of weighing is through circulating back oil pipe and engine oil pan intercommunication, the measuring pump is installed on the circulation returns oil pipe. The engine oil weighing system transfers the engine oil consumption generated by the engine into the engine oil reduction of the engine oil weighing oil tank, and monitors the engine oil quantity of the engine oil weighing oil tank in real time, so that the engine oil consumption of the engine is measured, and the engine oil weighing system is simple in structure, reasonable in design, high in measurement precision, convenient to implement and high in universality.

Description

Automatic measuring instrument for engine oil consumption

Technical Field

The invention belongs to the technical field of engines, and particularly relates to an automatic measuring instrument for engine oil consumption of an engine.

Background

At present, the measurement of engine oil consumption by various engine research and development units and manufacturers in China adopts an oil drainage weighing method recommended by the national standard GB18297-2001 item 8.9. The engine oil consumption measurement method in this standard is detailed as follows:

adding new engine oil to the upper limit of an engine oil dipstick of the engine, starting, adjusting to the working condition specified in the test as soon as possible, running for 1h, stopping after the engine oil temperature is stable, uniformly rotating the crankshaft, clockwise rotating the crankshaft for one circle within 1min, then clockwise rotating the crankshaft to the top dead center of the first cylinder, starting oil drainage at the oil drain plug of the oil pan when the 1min is finished, and draining for 15 min.

The total weight W1 of the discharged engine oil, the container and the funnel is weighed, the oil is poured back to the engine, the total weight W2 of the engine oil, the container and the funnel which cannot be poured out is weighed, and the difference of the two weights (W1-W2) is the added engine oil amount Wi.

Starting the engine, quickly adjusting to the operation condition before oil drainage, starting the test, continuously operating for 24h, stopping the engine, rotating the crankshaft according to the method, draining the oil, and weighing to obtain the total weight W3 of the engine oil, the container and the funnel discharged after the test, wherein the difference between W3 and W2 is the amount W0 of the engine oil discharged after the test.

The total oil consumption G0 is Wi-W0.

It is known that some domestic joint ventures purchase engine oil consumption measuring instruments with foreign AVL, the cost is high, and the price of each instrument is 40 ten thousand Euros. Based on the technical closure, the measurement mechanism and the measurement situation cannot be understood.

Only aiming at the oil drainage weighing method recommended by the international GB18297-2001 item 8.9, the following problems exist in the practical operation:

1. the mechanism is to ensure that each part has a relatively fixed space position when the engine stops at will, thereby ensuring that the oil storage capacity of each oil storage part is equal, and the oil flow flowing into the oil pan in the same time is equal. However, the top dead center of one cylinder of the multi-cylinder engine in the spatial state also corresponds to the top dead center of the last cylinder in the spatial state, for example, the top dead center of one cylinder of a four-cylinder engine is also the top dead center of the spatial position of four cylinders. The upper dead center of a cylinder of the six-cylinder machine is also the upper dead center of the space position of the six cylinders. The so-called one-cylinder and six-cylinder top dead center discrimination can be recognized only when the valve cover is detached, which cannot be done in actual operation. This provision does not determine a unique top dead center condition. If the upper dead point states of one cylinder and six cylinders are different in the two times of measurement of the same engine, the oil storage amount of the part inner part space (mainly a tappet body chamber) between the two times of measurement is different, the oil outflow amount of the engine is unequal in the same time, and the measurement result is inaccurate.

2. The engine oil has large fluidity difference under the influence of the environmental temperature in the oil discharging time of the engine, and the environmental temperature is difficult to control to be the same between the tests before and after 24H.

3. Although the engine is subjected to 24H continuous tests, the actual consumption of the engine only accounts for 3-5% of the total amount of the engine oil, and the measuring range of the selected measuring tool must be matched with the total amount of the engine oil. But the accuracy of the measuring tool which meets the weighing range of the total weight is lower than that of the oil consumption.

4. The requirements of national standard on operation are as follows: the engine oil is stopped after the temperature of the engine oil is stable, the crankshaft is uniformly rotated, the engine rotates clockwise within 1min for one circle, then the engine rotates clockwise to the top dead center of the engine, and the oil drainage is started at the oil drain plug of the oil pan of the engine when the 1min is finished. The problem that the working condition and the running time before the engine is shut down are not specified is that the oil storage amount of each space in the engine is uneven when the engine is shut down twice before and after the engine is shut down, and the oil storage amount of the top surface of the cylinder cover is different at the most main part, so that the oil outflow amount in the same time is different.

5. After the engine runs at a high speed, the temperature of the engine body is high, the temperature of the exhaust pipe is hundreds of degrees, the engine body space is limited, and related operations cannot be performed manually within 1min, so that great potential safety hazards exist in the operations.

6. The 24H continuous test time of the engine rated working condition determined by the national standard is long, the running cost is high, the operation is complicated, and the measurement result is influenced by the spilling, splashing and leakage of each link of oil drainage or engine oil filling.

7. The test value of the engine oil consumption specified by the national standard is only one working point of the engine, and the working point is not a common point in the actual use of the engine, and the value is not representative of the balance of the engine oil consumption.

Due to the problems, the measurement results of the same engine often have large difference in practical work, and the maximum difference reaches over 80%. Meanwhile, the testing time is long, the fuel consumption is large, and the cost is high, so that the measuring method also seriously influences the deep research of the domestic industry on the field of engine oil consumption.

Disclosure of Invention

The invention aims to solve the defects of the background technology and provide an automatic measuring instrument for the engine oil consumption, which has a simple structure and high measuring precision.

The technical scheme adopted by the invention is as follows: the utility model provides an engine oil consumption automatic measurement appearance, is including being fixed in elevating system and the engine oil tank of weighing on the rack, still includes liquid level balancer and measuring pump, the liquid level balancer is fixed in on the elevating system, the bottom liquid level entry of liquid level balancer passes through the drain plug screw mouth of pipeline intercommunication engine oil pan, and the play oil pipe of liquid level balancer communicates to the oil tank of weighing of engine oil, adjusts the play oil pipe mouth of pipe height of liquid level balancer through elevating system, the oil-out of the oil tank of weighing of engine oil is through circulation oil return pipe and engine oil pan intercommunication, the measuring pump is installed on circulation oil return pipe.

Further, the machine oil weighing oil tank comprises a tank body, a pressure sensor and a liquid labyrinth voltage stabilizer, wherein the pressure sensor is positioned at the bottom of the tank body, and the liquid labyrinth voltage stabilizer is arranged at the top of the tank body and seals the tank body.

Further, the liquid labyrinth voltage stabilizer comprises a sealing cover, a sealing oil box, sealing liquid and a support frame arranged on the rack, wherein the sealing cover is fixed on the support frame, the sealing oil box is fixed at the top of the box body, an upper groove tooth of the sealing cover is buckled in a lower groove of the sealing oil box, the upper groove tooth is suspended relative to the lower groove, the sealing liquid is located in the lower groove, and the liquid level of the sealing liquid is higher than the bottom of the upper groove tooth.

Furthermore, a plurality of annular upper groove teeth which are arranged in a concentric circle are arranged on the sealing cover, an annular upper groove is formed between every two adjacent upper groove teeth, a plurality of annular lower groove teeth which are arranged in a concentric circle are arranged on the sealing oil box, an annular lower groove is formed between every two adjacent lower groove teeth, the upper groove teeth are matched with the lower groove, and the lower groove teeth are matched with the upper groove.

Further, the sealing liquid is engine oil.

Further, the oil pan of the engine, the oil weighing oil tank and the liquid level balancer are communicated with each other through the air pressure balancer.

Further, the air pressure balancer is a multi-pipeline channel communicated with an engine oil pan, an oil weighing oil tank and a liquid level balancer.

Further, a shock absorber is arranged at the bottom of the engine oil weighing oil tank.

Further, still include the batch oil tank, the batch oil tank liquid outlet sets up the electric pump through the upper end of supplying oil pipe intercommunication liquid level balancer on the oil supply pipeline, and the inlet of batch oil tank all is equipped with the valve through the bottom intercommunication of oil return pipe and machine oil weighing oil tank on supplying oil pipe and the oil return pipe.

Furthermore, the weighing system further comprises a data acquisition and processing module, and the data output end of the weighing oil tank is electrically connected with the input end of the data acquisition and processing module.

The invention arranges a liquid level balancer between an engine oil pan and an engine oil weighing oil tank, the liquid level of the outlet pipe of the liquid level balancer is aligned with the liquid level of the oil pan through a lifting mechanism, engine oil flows between the engine oil pan, the liquid level balancer and the engine oil weighing oil tank through a metering pump to form a loop, the engine oil consumption generated by the engine is transferred to the engine oil reduction of the engine oil weighing oil tank, and the engine oil quantity of the engine oil weighing oil tank is monitored in real time, thereby realizing the measurement of the engine oil consumption of the engine. The measuring instrument has the advantages of simple structure, reasonable design, high measuring precision and high universality, is convenient to realize, and can be applied to any engine by changing the specification of the pipe orifice joint.

The liquid labyrinth pressure stabilizer is designed on the engine oil weighing tank, so that the influence on the stable data output of the pressure sensor caused by the rigid connection of the engine oil weighing tank cover and the oil outlet pipe of the liquid labyrinth pressure stabilizer with the engine oil weighing tank and the pressure change of a crankcase is avoided. The sealing cover of the liquid labyrinth pressure stabilizer is in a suspended state relative to the sealing oil box, when the internal space is higher than the external atmospheric pressure due to the working pressure of an engine, gas pushes engine oil among all groove teeth to overflow, the engine oil on the inner side of the same lower groove is lower than the engine oil on the outer side to form a liquid seal, the sum of the height differences of the liquids in the multiple grooves is the internal working gas pressure of the engine, the weight of the liquid seal does not act on the sealing oil box, the total weight of the sealing oil box and the engine oil weighing oil tank is not influenced, and under the structure, the measurement precision of the whole system is not influenced even if the internal gas pressure of the engine is changed; meanwhile, the sealing pressure of the internal pressure can be controlled by adjusting the number of the teeth of the upper groove and the lower groove.

The engine oil weighing oil tank, the liquid level balancer and the engine oil bottom shell are communicated through the air pressure balancer, so that the air pressure in the engine oil weighing oil tank is balanced with the air pressure in the engine, and the device ensures that the measurement precision effect is not influenced by the change of the air pressure of the engine.

According to the invention, the shock absorber is additionally arranged below the pressure sensor, so that the influence of the vibration of the engine stand on the accuracy and sensitivity of the sensor is avoided; the device achieves the effects of reducing environmental errors and ensuring the measurement precision.

The invention further connects a set of oil circuit system of oil storage tank, electric pump and oil injection tank between the engine oil weighing oil tank and the liquid level balancer, so as to achieve the effect of ensuring the continuity of the test without stopping and filling the engine under the condition that certain specific engines need to run for a long time (such as engine reliability test).

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the liquid labyrinth stabilizer of the present invention.

In the figure: 1-engine oil sump; 2-a U-shaped connecting pipe; 3, a lifting mechanism; 4-liquid level balancer; 5-engine oil weighing oil tank; 6-a pressure sensor; 7, a metering pump; 8-circulating oil return pipe; 9-air pressure balancer; 10-a shock absorber; 11-liquid labyrinth manostat; 12-an oil storage tank; 13-an electric pump; 14, a data acquisition processing module; 15-an oil outlet pipe; 15.1-orifice of tube; 16-engine oil dipstick tube orifice; 17-engine valve cover; 18-a sealing cover; 19-sealing the oil box; 20-sealing liquid; 21-a bench; 22-engine oil; 23, arranging a groove; 24-lower groove; 25-upper groove teeth; 26-lower groove teeth; 27-a support frame; 28-box body.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be in the singular but may also be in the plural.

It should be noted that although the terms "first," "second," "top," "bottom," "side," "other," "end," "other end," and the like may be used and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other.

Further, in constituting the component, although it is not explicitly described, it is understood that a certain error region is necessarily included.

As shown in fig. 1 and 2, the automatic measuring instrument for engine oil consumption according to the present invention includes a lifting mechanism 3 and an oil weighing tank 5 fixed on a rack 21, and further includes a liquid level balancer 4 and a metering pump 7, wherein the rack 21 may be a fixed non-movable supporting plane or a movable platform capable of walking. The U-shaped connecting pipe 2 is installed at an oil drain plug opening at the bottom of the engine oil pan 1, the engine oil pan 1 is communicated with the liquid level balancer 4 through the U-shaped connecting pipe 2, so that the oil liquid level in the engine oil pan 1 and the oil liquid level in the liquid level balancer 4 are kept level at any time, and the U-shaped connecting pipe 2 can be a hose meeting the specification. The device can achieve the effect of leading out the engine oil liquid level at the same height, and meanwhile, the specification of the pipe orifice connector is changed, so that the instrument can be applied to any engine. The liquid level balancer 4 may be a multi-ported tube on which a level gauge or scale is placed to observe the level of the liquid. The level balancer may be other types of structures that are capable of observing the level of the liquid.

The height of the liquid level balancer is adjusted by the lifting mechanism 3, so that the liquid level of the nozzle 15.1 of the oil outlet pipe 15 of the liquid level balancer 4 is flush with the liquid level in the engine oil pan 1. If the oil level of the engine oil pan 1 is higher than the liquid level of the liquid level balancer 4, the engine oil in the engine oil pan 1 can automatically flow into the engine oil weighing tank 5 through the U-shaped connecting pipe 2 and the nozzle 15.1 of the oil outlet pipe 15 of the liquid level balancer 4. The lifting mechanism can be any structure capable of vertically adjusting the height of the component, such as a simple screw rod lifter fixed on the bracket, or a similar lifting structure as in the lifting mechanism (2011101562750) of the extractor.

A metering pump 7 with constant flow and a circulating oil return pipe 8 are arranged between the engine oil weighing oil tank 5 and the pipe orifice of the engine oil dipstick, and when the metering pump 7 works, the engine oil in the engine oil weighing oil tank 5 is pumped back to the engine oil pan 1 through the pipe orifice 16 of the engine oil dipstick.

The working principle of the system of the invention is as follows: the metering pump 7 pumps the engine oil in the engine oil weighing tank 5 into the engine oil pan 1 through the engine oil scale pipe orifice 16, the liquid level of the engine oil in the engine oil pan 1 rises, when the liquid level is higher than the oil outlet pipe orifice 15.1 of the liquid level balancer 4, the engine oil in the engine oil pan 1 automatically flows into the liquid level balancer 4 through the U-shaped connecting pipe 2 and then flows into the engine oil weighing tank 5 through the oil outlet pipe orifice 15.1 of the liquid level balancer, so that the engine oil flows among the engine oil pan 1, the liquid level balancer 4 and the engine oil weighing tank 5 to form a loop, and the circulating flow effect of the engine oil among the engine oil pan 1, the liquid level balancer 4 and the engine oil weighing tank 5 is ensured.

When engine oil is consumed during the operation of the engine, the metering pump 7 pumps and replenishes the engine oil in the engine oil weighing oil tank 5 at any moment, and the capacity of the engine oil in the engine oil pan 1 is ensured to be constant all the time. Because the metering pump 7 has constant flow, and the flow is far greater than the engine oil consumption of the engine, the engine oil which is more than the engine consumption flows into the liquid level balancer 4 through the U-shaped connecting pipe 2 and then flows into the engine oil weighing oil tank 5, therefore, the engine oil consumption is transferred into the engine oil weighing oil tank 5, the engine oil consumption is continuous and constant, although the engine oil consumption is less than the fuel oil consumption, the engine oil consumption is always in a continuous reduction state, the engine oil consumption can be measured only by continuously monitoring the engine oil quantity of the engine oil weighing oil tank 5, and the longer the time is, the higher the precision is.

The bottom of the engine oil weighing oil tank 5 is provided with a pressure sensor 6 and is connected with a data acquisition and processing module 14 of a computer, special data processing software is designed, a proper sampling frequency is set to acquire the engine oil weight change value of the engine oil weighing oil tank 5, the data acquisition and processing module 14 can reach the variable data of the automatic acquisition pressure sensor 6, and the engine oil consumption and data processing are automatically calculated.

The invention is provided with an air pressure balancer 9, an engine oil pan 1, an oil weighing oil tank 5 and a liquid level balancer 4 are mutually communicated through the air pressure balancer 9, the air pressure balancer 9 can be a multi-pipeline channel for communicating the engine oil pan 1, the oil weighing oil tank 4 and the liquid level balancer 4, the air pressure balancer 9 can be supported on a rack through a support frame, a pipeline can be a movable structure such as a hose, the liquid level balancer 4 and a pipeline connecting mode between the air pressure balancer 9 and the oil weighing oil tank 5 adopt an external suspension type support, and the pipeline and a sealing device are not in direct contact with any part of the oil weighing oil tank 5. The design aims to prevent various pressures at the connecting part from being transmitted to the pressure sensor 6 after the oil pipe and the sealing device of the upper system are connected with the engine oil weighing oil tank 5 in the weight data acquisition of the pressure sensor, so that the large measurement error of the sensor is caused.

According to the invention, the liquid labyrinth pressure stabilizer 11 is designed on the engine oil weighing tank 5, so that the influence on the stable data output of the pressure sensor 6 caused by rigid connection of the cover of the engine oil weighing tank 5 and the oil outlet pipe of the liquid level balancer 4 with the engine oil weighing tank 5 and pressure change of a crankcase is avoided. The liquid labyrinth voltage stabilizer 11 comprises a sealing cover 18, a sealing oil box 19, sealing liquid 20 and a supporting frame 27 arranged on a rack 21, wherein the sealing cover 18 is fixed on the supporting frame 27, the sealing oil box 19 is fixed on the top of a box body 28, an upper groove tooth 25 of the sealing cover 18 is buckled in a lower groove 24 of the sealing oil box 19, the upper groove tooth 25 is suspended relative to the lower groove 24, the sealing liquid 20 is positioned in the lower groove 24, and the liquid level of the sealing liquid 20 is higher than the bottom of the upper groove tooth 25. The sealing liquid 20 is preferably engine oil. The sealing cover 18 is provided with a plurality of annular upper groove teeth 25 arranged in a concentric circle, an annular upper groove 223 is formed between the adjacent upper groove teeth 25, the sealing oil box 19 is provided with a plurality of annular lower groove teeth 26 arranged in a concentric circle, an annular lower groove 24 is formed between the adjacent lower groove teeth 26, the upper groove teeth 25 are matched with the lower groove 24, and the lower groove teeth 26 are matched with the upper groove 23.

The liquid-tight pressure stabilizer 11 is designed according to the following principle:

the sealing cover 18 and the sealing oil box 19 which can be buckled are designed, and when the two bodies are buckled, the upper groove teeth and the lower groove teeth of the grooves are not in any contact. The sealing oil box 19 is fixed on the box body 28, and the sealing cover 18 is supported by an external support frame. A proper amount of engine oil 20 is filled between the lower groove teeth of the sealed oil box 19, and then the upper sealing cover 18 is buckled, so that the engine oil in the lower grooves 24 of the same sealed oil box 19 is divided into a left part and a right part by the upper groove teeth 25 of the sealing cover 18. When the internal space is higher than the external atmospheric pressure due to the working pressure of the engine, the gas pushes the engine oil among the groove teeth to overflow, and the engine oil on the inner side of the same lower groove is lower than that on the outer side of the same lower groove, so that a liquid seal is formed. The sum of the liquid height differences in the multiple grooves is the gas pressure in the internal engine during working. The total weight of the liquids acts on the sealing oil box 19, and the sealing cover 18 is supported by the outside and is in a suspension state relative to the sealing oil box 19, so that the weight of the sealing oil box 19 and the total weight of the engine oil weighing oil tank 5 are not influenced. With the structure, even if the internal gas pressure of the engine changes, the measurement precision of the whole system is not influenced. Meanwhile, the sealing pressure of the internal pressure can be controlled by adjusting the number of the teeth of the upper groove and the lower groove.

According to the invention, the shock absorber 10 is additionally arranged below the pressure sensor 6, so that the influence of the vibration of the engine stand on the accuracy and sensitivity of the sensor is avoided. The device achieves the effects of reducing environmental errors and ensuring the measurement precision. The damper 10 may be a sponge or other soft material structure.

The engine oil weighing oil tank 5, the liquid level balancer 4 and the engine valve cover 17 are communicated through the air pressure balancer 9, so that the gas pressure inside the engine oil weighing oil tank 5 is balanced with the air pressure inside the engine. The device guarantees that the air pressure change of the engine does not influence the measurement precision effect.

The data collected by the pressure sensor 6 is immediately transmitted to the data collecting and processing module 14 for immediate calculation processing, and the test is stopped when the calculated value is stable. The data processing mode is as follows: the acquired data is a scattered point with a continuously reduced trend, the scattered point is fitted into a straight line with a constant reduced speed by using a least square method, then a difference value of the measurement results of the previous and the next two times is taken in a time unit of 60min and is fitted into a horizontal straight line, the value is divided by the hourly fuel quantity of the current engine, and the result is the engine oil consumption quantity-engine-fuel ratio required by measurement. The measurement was completed when the calculated value was in a steady state in the test.

In addition, an oil circuit system of an oil storage tank 12, an electric pump 13 and an oil injection tank is additionally connected between the engine oil weighing oil tank 5 and the liquid level balancer 4, so that the effects of not needing to stop the engine and filling oil under the condition that certain specific engines need to operate for a long time (such as engine reliability tests) and ensuring the test continuity are achieved.

In the development test, the measuring time of a single engine can be controlled within 8H, and the national standard 24H weighing method comparison of the following engines is carried out, and the results are shown in the following table:

as seen in the data above, the vast majority of the final results have errors less than 10%.

In addition, when the instrument works, the connection between the U-shaped connecting pipe and the plug hole of the engine oil pan is manually carried out only once, other manual auxiliary operations are not needed in the whole process, the interference of operation and environmental factors is avoided, and the computer automatically calculates the measuring result. Meanwhile, the measuring time is short, the measuring time of the engine oil consumption of a single engine is not more than 8H, and a test result can be obtained, so that the test time and the test cost are greatly reduced.

In describing positional relationships, for example, when positional sequences are described as being "on.. above", "over.. below", "below", and "next", unless such words or terms are used as "exactly" or "directly", they may include cases where there is no contact or contact therebetween. If a first element is referred to as being "on" a second element, that does not mean that the first element must be above the second element in the figures. The upper and lower portions of the member will change depending on the angle of view and the change in orientation. Thus, in the drawings or in actual construction, if a first element is referred to as being "on" a second element, it can be said that the first element is "under" the second element and the first element is "over" the second element. In describing temporal relationships, unless "exactly" or "directly" is used, the description of "after", "subsequently", and "before" may include instances where there is no discontinuity between steps. The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and performed in a variety of different configurations as would be well understood by those skilled in the art. Embodiments of the invention may be performed independently of each other or may be performed together in an interdependent relationship.

It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.

The foregoing description of the embodiments and specific examples of the invention have been presented for purposes of illustration and description; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

Those of skill in the art will further appreciate that the various illustrative logical blocks, units, and steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various illustrative components, elements, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

The various illustrative logical blocks, or elements, described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (10)

1. An engine oil consumption automatic measuring instrument which is characterized in that: the oil weighing device comprises a lifting mechanism (3) and an engine oil weighing oil tank (5) which are fixed on a rack, and further comprises a liquid level balancer (4) and a metering pump (7), wherein the liquid level balancer (4) is fixed on the lifting mechanism (3), a bottom liquid level inlet of the liquid level balancer (4) is communicated with an oil drain plug hole of an engine oil pan (1) through a pipeline, an oil outlet pipe of the liquid level balancer (4) is communicated to the engine oil weighing oil tank (5), the height of an oil outlet pipe opening of the liquid level balancer (4) is adjusted through the lifting mechanism (3), an oil outlet of the engine oil weighing oil tank (5) is communicated with the engine oil pan (1) through a circulating oil return pipe, and the metering pump (7) is installed on the circulating oil return pipe.

2. The automatic measuring instrument for engine oil consumption according to claim 1, characterized in that: the engine oil weighing oil tank (5) comprises a tank body (28), a pressure sensor (6) and a liquid labyrinth voltage stabilizer (11), wherein the pressure sensor (6) is positioned at the bottom of the tank body (28), and the liquid labyrinth voltage stabilizer (11) is installed at the top of the tank body (28) and seals the tank body (28).

3. The automatic measuring instrument for engine oil consumption according to claim 2, characterized in that: the liquid labyrinth voltage stabilizer (11) comprises a sealing cover (18), a sealing oil box (19), sealing liquid (20) and a supporting frame (27) installed on a rack, wherein the sealing cover (18) is fixed on the supporting frame (27), the sealing oil box (19) is fixed at the top of a box body (28), upper groove teeth (25) of the sealing cover (18) are buckled in lower grooves (24) of the sealing oil box, the upper groove teeth (25) are suspended relative to the lower grooves (24), the sealing liquid (20) is located in the lower grooves (24), and the liquid level of the sealing liquid (20) is higher than the bottom of the upper groove teeth (25).

4. The automatic measuring instrument for engine oil consumption according to claim 3, characterized in that: the sealing structure is characterized in that a plurality of annular upper groove teeth (25) which are arranged in a concentric circle are arranged on the sealing cover (18), an annular upper groove (23) is formed between every two adjacent upper groove teeth (25), a plurality of annular lower groove teeth (26) which are arranged in a concentric circle are arranged on the sealing oil box (19), an annular lower groove (24) is formed between every two adjacent lower groove teeth (26), the upper groove teeth (25) are matched with the lower groove (24), and the lower groove teeth (26) are matched with the upper groove (23).

5. The automatic measuring instrument for engine oil consumption according to claim 3, characterized in that: the sealing liquid (20) is engine oil.

6. The automatic measuring instrument for engine oil consumption according to claim 1, characterized in that: the engine oil pan (1), the engine oil weighing oil tank (5) and the liquid level balancer (4) are communicated with each other through the air pressure balancer (9).

7. The automatic measuring instrument for engine oil consumption according to claim 6, characterized in that: the air pressure balancer (9) is a multi-pipeline channel communicated with an engine oil pan (1), an engine oil weighing oil tank (5) and the liquid level balancer (4).

8. The automatic measuring instrument for engine oil consumption according to claim 1, characterized in that: and a shock absorber (10) is arranged at the bottom of the engine oil weighing oil tank (5).

9. The automatic measuring instrument for engine oil consumption according to claim 1, characterized in that: still include batch oil tank (12), batch oil tank (12) liquid outlet sets up electric pump (13) through the upper end of supplying oil pipe intercommunication liquid level equalizer (4) on the oil supply pipeline, and the inlet of batch oil tank (12) is through returning oil pipe and the bottom intercommunication of machine oil weighing oil tank (5), all is equipped with the valve on supplying oil pipe and the oil return pipe.

10. The automatic measuring instrument for engine oil consumption according to claim 1, characterized in that: the engine oil weighing system is characterized by further comprising a data acquisition and processing module (14), wherein the data output end of the engine oil weighing oil tank (5) is electrically connected with the input end of the data acquisition and processing module (14).

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