Knock detector for octane number measuring machine based on motor method

Abstract

The utility model discloses a knock detector for a motor octane number tester, which belongs to the technical field of knock detectors and comprises a shell and an inner core positioned in the shell, and an initial coil with N turns and D diameter is wound on the inner core; the device is characterized in that the initial coil comprises a first initial coil and a second initial coil; the first initial coil and the second initial coil are connected through an additional coil; the diameter of the additional coil is 0.5 D. The number of turns of the additional coil is N. The coil of the knock detector is optimally designed and improved, so that the sensitivity of the knock detector is remarkably improved. By means of the improvement, the knock detector can more sensitively capture tiny changes in the oil combustion process in the detection process, and therefore the detection precision is greatly improved. Therefore, the measured octane number result of the oil product is more accurate and reliable, and more accurate data support is provided for evaluation of the quality of the oil product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of knock detector, especially relates to a motor method octane number determination machine knock detector. BACKGROUND

[0002] As a kind of key detection element, knock detector belongs to knock sensor, is widely used in motor method octane number determination machine. Knock sensor is after detecting knock pulse signal to be rapidly conducted to upper control center, can not need specific numerical value, control center is according to the knock degree of transmission to be rapidly controlled and handled;Knock detector detects knock pulse signal, and the average value in the probable range is accumulated to be presented as numerical value, without subsequent control processing measures;The core function of knock detector is to accurately detect the octane number of oil product. The principle of this process is based on the vibration mechanical energy generated when oil product is combusted in engine, which is converted into electromagnetic pulse signal through specific conversion mechanism. This signal is then used to analyze and evaluate the octane number of oil product, to ensure the reliability of oil quality.

[0003] However, through a large number of experiments and researches, we find that traditional knock detector has some significant technical defects. First, with the advancement of technology and the improvement of market demand, people have higher requirements for the detection sensitivity of knock detector. However, the sensitivity of traditional knock detector has been difficult to meet the current high standard demand. Secondly, traditional knock detector also has limitations in oil detection range. For example, the traditional ONT-A type motor method octane number determination machine knock detector, its application range mainly concentrates in the oil product with octane number between 80 to 120. This means that for the oil product with octane number beyond this range, the detection effect of traditional knock detector will be greatly discounted.

[0004] In view of the above problems, it is particularly important to develop a motor method octane number determination machine knock detector with higher sensitivity and wider detection range. Such improvement not only can improve the accuracy of oil detection, but also can widen the detection range, so as to meet the detection needs of more kinds of oil products. This has important practical significance and long-term influence on the development of petroleum industry and related fields. UTILITY MODEL CONTENT

[0005] In view of the problems existing in the prior art, the utility model provides a motor method octane number determination machine knock detector, which can improve the detection sensitivity of knock detector on one hand, and can also widen the detection range of knock detector on the other hand.

[0006] The technical scheme adopted by the utility model is:

[0007] A motor octane number determination machine knock detector comprises a shell and an inner core located in the shell, and an initial coil with a number of turns N and a diameter D is wound on the inner core; the initial coil comprises a first initial coil and a second initial coil; the first initial coil and the second initial coil are connected through an additional coil; the diameter of the additional coil is 0.5D, and the number of turns of the additional coil is N.

[0008] Preferably, an insulating paint layer is arranged on the outer surface of the first initial coil, the second initial coil and the additional coil.

[0009] Preferably, the insulating paint layer is three layers.

[0010] Preferably, N=60.

[0011] Preferably, the first initial coil, the second initial coil and the additional coil are all copper wires.

[0012] Preferably, the number of turns of the first initial coil and the second initial coil is equal.

[0013] Compared with the prior art, the application has the advantages and positive effects that:

[0014] The utility model discloses a technical scheme, realizes remarkable performance improvement in many aspects. First, through the optimization design and improvement of the sensitive element (i. e. the coil outside the inner core) of the knock detector, through the increase of the number of turns of the coil, the magnetic force is enhanced, and the weaker electromagnetic pulse signal generated by the vibration can be detected. At the same time, by reducing the coil diameter, the wire is thinned, the magnetic force is reduced, and the detection of the weak electromagnetic pulse signal generated by the vibration is reduced. Therefore, the utility model significantly improves the sensitivity of the knock detector. This improvement makes the knock detector more sensitive to capture the slight change in the combustion process of oil products during the detection process, thereby greatly improving the detection accuracy. Therefore, the measured octane number of oil products is more accurate and reliable, and more accurate data support is provided for the evaluation of oil product quality.

[0015] Secondly, the utility model discloses a coil of detector is improved, and the detection range of oil product is widened.Before the transformation, the detector is mainly applicable to the detection oil product of octane rating between 80 to 120.However, after the technical upgrading, the magnetic enhancement of the original coil diameter is increased by 60 turns, and the current is increased, and the detection accuracy, range and sensitivity of the knock detector are greatly improved, but the service life of the knock detector is greatly reduced, and the coil is very easy to burn, resulting in cost increase, and after the increased coil diameter is reduced to 0.5 times, the detection accuracy, range and sensitivity of the knock detector can meet the use requirement, and the service life problem is solved, and the application range of the detector is significantly expanded, and the octane rating range from 60 to 120 can be covered.The improvement makes the detector adapt to more kinds of oil product, and accurate detection can be carried out on low octane value or high octane value oil product.

[0016] Finally, by adopting the insulating paint layer, the service life of the knock detector is significantly prolonged.In the daily use process, the safety performance of the detector is higher, the maintenance and replacement frequency are reduced, and therefore the use cost of the user is reduced.The improvement not only improves the economic benefit of the detector, but also ensures the continuity and stability of the detection data, and provides more durable technical support for oil quality control. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0018] Figure 1 It is the inside core and the initial coil, the additional coil on the inside core in the preferred embodiment of the utility model show the schematic diagram;

[0019] Figure 2 It is the shell schematic diagram in the preferred embodiment of the utility model;

[0020] Figure 3 It is the perspective view of the preferred embodiment of the utility model;

[0021] Figure 4 It is the structure schematic diagram of the preferred embodiment of the utility model;

[0022] Wherein: 1, the shell;2, the first initial coil;3, the second initial coil;4, the additional coil;5, the inside core;6, the connector;7, the strong magnetism;8, the probe;9, the amplifier;10, the external delivery connector;11, the mainboard;12, the insulating beginning end;13, the insulating terminal;14, the fine adjustment locknut. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the utility model.

[0024] In the description of the utility model creation, it needs to be explained that unless there is explicit provision and limitation, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model creation can be understood through specific circumstances.

[0025] Please refer to Figures 1 to 4 ,

[0026] A motor octane rating machine knock detector comprises a shell 1 and an inner core 5 located in the shell 1, and an initial coil is wound on the inner core 5, the initial coil has N turns and a diameter D. The initial coil is further divided into two parts, i.e. a first initial coil 2 and a second initial coil 3. The two coils are connected by an additional coil 4. The diameter of the additional coil 4 is half of the diameter of the initial coil, i.e. 0.5D, and the number of turns of the additional coil is the same as that of the initial coil, i.e. N. The number of turns N is set according to actual requirements, for example, N can be 60.

[0027] As Figure 4 shown, the motor octane rating machine knock detector further comprises a strong magnet 7 arranged in the shell 1, the leading end of the shell 1 is a connector 6 provided with external threads, the trailing end of the shell 1 is provided with internal threads connected to an amplifier 9, the amplifier 9 is connected with an external delivery connector 10, the leading end of the inner core 5 is provided with a probe 8, and the trailing end of the inner core 5 is provided with the strong magnet 7; the amplifier 9 is electrically connected with a main board 11; the shell 1, the inner core 5 and the initial coil are used in cooperation with other components. Since the above products, use process and cooperation relationship are prior art, no further description is given. The left end of the initial coil is an insulating terminal 13, and the right end is an insulating terminal 12.

[0028] In order to further understand the technical solutions of the present application, the following is a non-limiting example:

[0029] In order to further improve the insulation safety and prolong its service life, the outer surface of the first initial coil 2, the second initial coil 3 and the additional coil 4 is coated with an insulating paint layer. This insulating paint layer not only effectively prevents current leakage, but also resists the erosion of the coil by the external environment to some extent, thereby ensuring the stable operation of the entire device. In order to achieve better insulation effect, the insulating paint layer can adopt a multi-layer structure, for example, it can be set to three layers. Each layer of insulating paint layer can provide additional protection, making the overall insulation performance more reliable.

[0030] In the present embodiment, the first initial coil 2, the second initial coil 3 and the additional coil 4 all use copper wire as the conductive material. Copper wire has good electrical conductivity and high mechanical strength, can withstand large current load, and at the same time maintains low resistance value. In addition, the thermal conductivity of copper wire is also good, which helps to dissipate heat during the operation of the coil, thereby further improving its service life.

[0031] It is worth noting that the number of turns of the first initial coil 2 and the second initial coil 3 is equal. This design can ensure that the magnetic field intensity generated by the two coils when current passes through is consistent, thereby maintaining the balance of the electromagnetic system. By keeping the number of turns consistent, it can effectively avoid the magnetic field asymmetry caused by the difference in the number of turns of the coil, thereby ensuring the stability and reliability of the entire device.

[0032] The working principle of the knock detector is to convert the vibration mechanical energy generated when the oil is burned in the engine into electromagnetic pulse signals, and then present the frequency of these pulse signals in digital form through the analysis module. In the present utility model, a coil is specially added, which has a diameter of only half of the initial coil diameter, but the number of turns is equal to that of the initial coil. This parameter setting is based on the results of a large number of practices and experimental verifications. In actual use, through the summary and comparison of a large number of oil analysis results, it is found that when the octane number of the measured oil is between 80 and 120, the consistency of the detection results with the detection results of the same oil in other units is as high as 99% or more. However, when the octane number is less than 80, the consistency of the detection results is reduced to about 76%, and the lower the octane number, the lower the accuracy. On the contrary, when the octane number is higher than 120, the consistency of the detection results is about 90%. It is worth noting that the procurement rate of oil with octane number higher than 120 is relatively low, therefore, it is necessary to improve the accuracy of the detection results of oil with octane number below 80.

[0033] After a lot of practice and experiment, we draw the following conclusions: the total number of turns of the electromagnetic coil of the knock detector is 60 turns. When the newly wound copper coil diameter is half of the original coil diameter, and at the same time winding 60 turns, the detection range of the knock detector will extend downward. More importantly, when the octane rating of the oil is between 60 and 80, the accuracy of the detection result can be improved to 98%. In addition, the failure rate of damage when detecting low octane oil is also greatly reduced. This improvement not only improves the performance of the detector, but also provides more accurate and reliable detection results for users.

[0034] The calculation principle of the present application is described in detail as follows:

[0035] Through the improvement of the present application, the number of turns of the coil is increased, so that the magnetic force of the knock detector is significantly enhanced. Such improvement makes the detector able to capture more weak electromagnetic pulse signals generated by vibration, thereby improving the sensitivity and accuracy of detection.

[0036] In another improvement, the present application reduces the diameter of the copper coil, making the wire thinner. This design adjustment results in a decrease in the magnetic force of the knock detector, so it can detect correspondingly reduced weak electromagnetic pulse signals generated by vibration. Such adjustment may affect the performance of the detector, but it can also be weighed according to actual needs.

[0037] After a series of practice and summary, the engineer found that when the coil diameter increases by 60 turns, the magnetism will be enhanced, and the current will also increase accordingly. Such changes make the knock detector have a substantial improvement in detection accuracy, range and sensitivity. However, the problem that follows is that the service life of the knock detector will be greatly reduced, and the coil is very easy to burn out, which not only affects the stability of the equipment, but also leads to an increase in cost. In order to solve this problem, the present application further adjusts the coil diameter to 0.5 times the original diameter. Through this adjustment, it can be found that the knock detector not only maintains the detection accuracy, range and sensitivity, but also solves the problem of service life, thereby meeting the use requirements while reducing the cost.

[0038] The above only describes the preferred embodiments of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application is included in the protection scope of the present application.

Claims

1. A motor octane rating engine knock detector comprising a housing and an inner core located within the housing, an initial coil of N turns and diameter D being wound on the inner core; characterized by, The initial coil comprises a first initial coil and a second initial coil; the first initial coil and the second initial coil are connected through an additional coil; the diameter of the additional coil is 0.5D, and the number of turns of the additional coil is N.

2. The motor octane deter minator knock detector of claim 1, wherein An insulating paint layer is arranged on the outer surface of the first initial coil, the second initial coil and the additional coil.

3. The motor octane deter minator knock detector of claim 2, wherein The insulating paint layer is three layers.

4. The motor octane deter minator knock detector of claim 1 wherein, N＝60。 5. The motor octane deter minator knock detector of claim 1 wherein, The first initial coil, the second initial coil and the additional coil are all copper wires.

6. The motor octane deter minator knock detector of claim 1 wherein, The number of turns of the first initial coil and the second initial coil is equal.

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