Engine starting device and using method

Abstract

The invention relates to the technical field of engine starting, in particular to an engine starting device and a using method.The engine starting device comprises a frame body component and a starting component installed on the frame body component, an engine to be tested is placed on the frame body component, and the starting component comprises two circuits arranged in parallel; wherein one circuit is connected in series with a lubricating pump of a to-be-tested engine and is used for starting the lubricating pump; and the starting piece on the other circuit is connected with a flywheel of the engine to be tested, and the starting piece is started after the output pressure of the lubricating pump reaches a set value. By ensuring that a lubricating system reaches proper working pressure before starting, friction and abrasion during starting are reduced, the service life of an engine is prolonged, and the success rate and efficiency of starting are improved, so that the maintenance working efficiency is improved, reliable guarantee is provided for performance verification of the engine, and by adopting the original circuit design, the cost is reduced. The safety and stability of engine starting are ensured, and the phenomena of short circuit and electric leakage are effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of engine starting, and in particular to an engine starting device and a use method thereof. Background Art

[0002] After the dump truck engine is overhauled, a dynamometer test is a crucial step. The purpose of this test is to verify whether the engine's technical parameters meet the standards and ensure that the overhauled engine can operate safely and efficiently. In this process, the engine start is particularly critical because it is directly related to whether the engine's technical parameters can be accurately read.

[0003] The traditional engine starting method requires activating the lubrication system before starting and injecting oil into the relevant parts inside the engine. Then, by running these parts, the diesel in the combustion chamber is compressed, and the engine is finally started. However, as the engine power increases, its static torque also increases. If the power of the motor starting device of the dynamometer remains unchanged, this increased static torque may cause the engine to fail to start successfully, thus affecting the dynamometer test. Summary of the invention

[0004] In view of the above problems existing in the existing engine starting device, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide an engine starting device, which aims to solve the problem that as the engine power increases, its static torque also increases, resulting in the starting device being unable to start the engine when the power of the dynamometer motor remains unchanged.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an engine starting device, comprising a frame component and a starting component mounted on the frame component, wherein the engine to be tested is placed on the frame component.

[0007] The starting component includes two circuits arranged in parallel, one of which is connected in series with the lubrication pump of the engine to be tested and is used to start the lubrication pump; the starting component on the other circuit is connected to the flywheel of the engine to be tested, and the starting component is turned on after the output pressure of the lubrication pump reaches a set value.

[0008] As a preferred embodiment of the engine starting device of the present invention, the starting component includes a power supply, a starting switch, a first relay and a second relay, wherein one end of the first relay is connected in series with the starting switch to form an input circuit, and the other end is connected in series with the lubrication pump of the engine to be tested to form an output circuit; the second relay is a pressure relay, one end of the second relay is connected to the pressure switch at the oil outlet position of the lubrication pump to form an input circuit, and the other end is connected in series with the starting component to form an output circuit, and the starting component is detachably connected to the flywheel of the engine to be tested.

[0009] As a preferred embodiment of the engine starting device of the present invention, the power supply, the starting switch, the first relay, and the lubrication pump form a first circuit by returning to the power supply, and the first circuit is used to control the starting and operation of the lubrication pump to ensure that the lubrication system is fully lubricated before the engine is started.

[0010] As a preferred embodiment of the engine starting device of the present invention, the power supply, the starting switch, the second relay and the starting element form a second circuit by returning to the power supply, and the second circuit is specifically used to control the starting of the starting element to drive the engine flywheel to rotate and start the engine after the lubrication system reaches an appropriate pressure.

[0011] As a preferred solution of the engine starting device of the present invention, the power supply is provided with two sets of parallel batteries for increasing the capacity of the power supply and ensuring the stability of the output voltage.

[0012] As a preferred solution of the engine starting device of the present invention, the starting member includes a motor and a rotating disk connected to the motor output shaft by a belt drive, and the rotating disk can be detachably mounted on the flywheel of the engine to be tested.

[0013] As a preferred embodiment of the engine starting device of the present invention, a plurality of through holes are arranged in a circular shape with equal intervals on the rotating disk, and each of the through holes corresponds to the position of the bolt holes on the flywheel one by one, and the bolts pass through the through holes and are screwed to the bolt holes on the flywheel.

[0014] As a preferred solution of the engine starting device of the present invention, the frame component includes a trailer and two diagonal braces installed on the trailer, the two diagonal braces are symmetrically arranged, and the engine to be tested is placed between the two diagonal braces.

[0015] As the engine starting scheme of the present invention, wherein: the starting switch is installed on the handlebar of the trailer, and the power supply is placed on the trailer and close to the handlebar.

[0016] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for using an engine starting device, comprising the engine starting device, and,

[0017] Connect the various parts of the engine starting device to various parts of the engine to be tested;

[0018] Closing the start switch, connecting the first circuit, and starting the lubrication pump to supply oil to the engine to be tested;

[0019] When the output pressure of the lubrication pump reaches the set value, the second relay is started, the starting element is turned on to drive the flywheel, and finally drives the engine to be tested to rotate, thereby realizing an optimal operation of the engine starting device.

[0020] The beneficial effects of the present invention are as follows: by adopting the original circuit design, the safety and stability of engine starting are ensured, short circuit and leakage phenomena are effectively avoided, and at the same time, the correct engine starting steps are followed to prevent damage to the engine caused by incorrect starting. The device is specially designed for high-power engines and can effectively solve the problem of starting difficulties in dynamometer tests, improve the starting success rate, and ensure the stable operation of the engine under various working conditions. In addition, the design reduces friction and wear during starting by ensuring that the lubrication system has reached an appropriate working pressure before starting, thereby extending the service life of the engine, and improving the starting success rate and efficiency, thereby improving the efficiency of maintenance work and providing reliable guarantees for engine performance verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the working state structure of the engine starting device of the present invention.

[0023] Figure 2 The figure is a schematic diagram of the circuit connection of the starting components of the engine starting device of the present invention.

[0024] Figure 3 The structure of the engine starting device of the present invention is shown in FIG. Figure 1 .

[0025] Figure 4 The structure of the engine starting device of the present invention is shown in FIG. Figure 2 .

[0026] Figure 5 The structure of the engine starting device of the present invention is shown in FIG. Figure 3 .

[0027] In the figure:

[0028] 100, frame parts; 101, trailer; 102, diagonal brace;

[0029] 200, starting component; 201, power supply; 202, starting switch; 203, first relay; 204, second relay; 205, starting member; 205a, motor; 205b, rotating disk; 205c, through hole;

[0030] 300. Engine to be tested; 301. Lubrication pump; 302. Flywheel. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Example 1

[0036] Reference Figure 1-Figure 5, which is the first embodiment of the present invention, provides an engine starting device, including a frame component 100 and a starting component 200 installed on the frame component 100, wherein the engine 300 to be tested is placed on the frame component 100, wherein the starting component 200 includes two circuits arranged in parallel, wherein one circuit is connected in series with a lubrication pump 301 of the engine to be tested 300, for starting the lubrication pump 301; the starting component 205 on the other circuit is connected to a flywheel 302 of the engine to be tested 300, and the starting component 205 is turned on after the output pressure of the lubrication pump 301 reaches a set value.

[0037] The traditional method of starting the engine 300 to be tested requires activating the lubrication system before starting, injecting oil into the relevant parts inside the engine body in advance, and then operating these parts to compress and burn the diesel in the combustion chamber to start the engine 300 to be tested. The engine 300 to be tested can only be started when the output torque of the motor starting device of the dynamometer is greater than the static torque of the engine 300 to be tested, and the static torque of the engine 300 to be tested is proportional to the power of the engine 300 to be tested. However, as the power of the engine 300 to be tested increases, its static torque also increases, resulting in the inability of the starting device to start the engine 300 to be tested when the power of the motor of the dynamometer remains unchanged.

[0038] In view of this problem, the patent proposes an innovative electric starting device, which aims to overcome the defect that the existing dynamometer motor cannot start the high-power test engine 300. The device includes a lubrication pump 301 (provided by the test engine 300), a power supply 201, a starter 205, a start switch 202, a first relay 203 and a second relay 204 (pressure relay). Through a carefully designed circuit, the device can start the lubrication pump 301 first during the start-up process, and then start the motor 205a in the starter 205 after the lubrication system reaches an appropriate pressure, thereby driving the flywheel 302 of the test engine 300 to rotate and start the test engine 300.

[0039] The advantage of this electric starting device is that it completely adopts the original circuit, which not only ensures the safety and stability of the start, avoids short circuit and leakage, but also complies with the start steps of the engine to be tested 300, avoiding the damage to the engine to be tested 300 caused by wrong start. Through this electric starting device, the start problem of the high-power engine to be tested 300 in the dynamometer test can be effectively solved, the success rate of the start can be improved, and the engine to be tested 300 can be ensured to run stably under various working conditions, meeting the requirements of national standards such as GB / T3799.1-2005 and GB / T 3799.2-2005, which not only improves the efficiency of maintenance work, but also provides reliable guarantee for the performance verification of the engine to be tested 300.

[0040] Specifically: the starting component 200 includes a power supply 201, a starting switch 202, a first relay 203 and a second relay 204, wherein one end of the first relay 203 is connected in series with the starting switch 202 to form an input circuit, and the other end is connected in series with the lubrication pump 301 of the engine to be tested 300 to form an output circuit; the second relay 204 is a pressure relay, one end of the second relay 204 is connected to the pressure switch at the oil outlet position of the lubrication pump 301 to form an input circuit, and the other end is connected in series with the starting member 205 to form an output circuit, and the starting member 205 is detachably connected to the flywheel 302 of the engine to be tested 300. The power supply 201, the starting switch 202, the first relay 203, and the lubrication pump 301 form a first circuit by returning to the power supply 201, and the first circuit is used to control the start and operation of the lubrication pump 301 to ensure that the lubrication system is fully lubricated before the engine to be tested 300 is started. The power supply 201, the start switch 202, the second relay 204, and the starter 205 form a second circuit by returning to the power supply 201. The second circuit is specifically used to control the start of the starter 205 to drive the engine flywheel 302 to rotate and start the engine 300 to be tested after the lubrication system reaches an appropriate pressure.

[0041] It should be noted that the main function of the lubrication system is to reduce the friction and wear between the moving parts of the engine 300 to be tested, and to help dissipate heat and clean. The lubrication system includes key components such as the oil pan, the oil pump, the oil filter, and the main oil channel. The oil pump is responsible for extracting and pressurizing the lubricating oil in the oil pan and delivering it to the various components of the engine 300 to be tested through the main oil channel for lubrication.

[0042] Working principle of pressure switch: The core function of pressure switch, also known as electro-hydraulic pressure relay, is to sense the pressure change in the system. When the pressure in the system reaches the set value, the mechanical structure inside the pressure switch triggers the closing or opening of the electrical contacts, thereby sending an electrical signal, which can be used to activate the relay or directly control other electrical equipment.

[0043] Working principle:

[0044] Power supply 201 design: Power supply 201 consists of two sets of parallel batteries, each set contains two batteries in series. This design increases the capacity of power supply 201 while ensuring the stability of the output voltage, providing sufficient power for the starting process.

[0045] First circuit design: The first circuit includes a power supply 201, a start switch 202, a first relay 203 and a lubrication pump 301. The power supply 201 provides power to the entire circuit. The start switch 202 is an interface operated by the user. When the start switch 202 is closed, the circuit is connected. One end of the first relay 203 is connected in series with the start switch 202 to form an input loop; the other end is connected in series with the lubrication pump 301 to form an output loop. When the start switch 202 is closed, the first relay 203 is activated, thereby starting the lubrication pump 301.

[0046] Second circuit design: The second circuit includes a power supply 201, a start switch 202, a second relay 204 (pressure relay) and a starter 205 (motor 205a and rotating disk 205b). One end of the second relay 204 is connected to the pressure switch at the oil outlet of the lubrication pump 301 to form an input circuit; the other end is connected in series with the starter 205 to form an output circuit. When the pressure of the lubrication system reaches the set value, the pressure switch activates the second relay 204, thereby starting the starter 205, driving the engine flywheel 302 to rotate and starting the engine 300 to be tested.

[0047] This design ensures that the lubrication system of the engine 300 to be tested has reached an appropriate working pressure before starting, which can reduce friction and wear during starting and extend the service life of the engine 300 to be tested. At the same time, by accurately controlling the starting timing of the starting member 205, the success rate and efficiency of starting can be improved.

[0048] Workflow:

[0049] The user closes the start switch 202 to activate the first circuit. The first relay 203 responds to the closing of the start switch 202 and turns on the power supply 201 of the lubrication pump 301. The lubrication pump 301 starts to work, and the gears or screws inside it start to rotate to draw oil from the oil pan. The lubrication pump 301 draws the oil from the oil pan and pressurizes the oil through the mechanical structure inside the oil pump (such as a gear pump or a screw pump). The pressurized oil is transported to various parts that need lubrication, such as the crankshaft, camshaft, piston, valve, etc., through the oil channels inside the engine 300 to be tested. As the lubrication pump 301 continues to work, the oil pressure is gradually built up. The establishment of oil pressure is crucial to ensure that the parts of the engine 300 to be tested are fully lubricated.

[0050] The pressure switch monitors the oil pressure of the lubrication system. When the pressure reaches a preset safe starting value, the pressure switch will be triggered, which will activate the second relay 204, thereby connecting the power supply 201 of the starter motor 205a, and the starter motor 205a starts to work, driving the flywheel 302 of the engine 300 to be tested to rotate, and finally starting the engine 300 to be tested. The starting member 205 starts to work, driving the flywheel 302 of the engine 300 to be tested to rotate, and finally starting the engine 300 to be tested.

[0051] After the engine 300 to be tested is started and running, the lubrication pump 301 continues to work to ensure that the components of the engine 300 to be tested are continuously lubricated during the entire operation process.

[0052] The effects are: (1) Ensure lubrication: Through the design of the first circuit, it is ensured that the lubrication system is fully lubricated before the engine 300 to be tested is started, thereby reducing the wear of the engine 300 to be tested when it is started. (2) Improve the starting reliability: The design of the second circuit ensures that the engine 300 to be tested will not be started until the lubrication system reaches an appropriate pressure, which improves the starting reliability and prevents damage to the engine 300 to be tested due to insufficient lubrication. (3) Easy operation: The user only needs to operate the starting switch 202 to complete the entire starting process, simplifying the operating process. The design of this electric starting device controls the starting of the lubrication system and the engine 300 to be tested respectively through two independent circuits, which not only improves the safety and reliability of the starting of the engine 300 to be tested, but also ensures a stable supply of electrical energy during the starting process through the reasonable design of the power supply 201.

[0053] The power supply 201 is provided with two sets of parallel-connected batteries, which are used to increase the capacity of the power supply 201 and ensure the stability of the output voltage.

[0054] It should be noted that: (1) Increasing the capacity of the power source 201: (1.1) Parallel battery configuration: In the electric starting device, two groups of batteries connected in parallel can provide a larger current output than a single group of batteries. This is because the total current of the parallel circuit is the sum of the currents of each branch. Therefore, when two groups of batteries are connected in parallel, they jointly provide a larger current, which is particularly important for starting a high-power engine 300 to be tested. (1.2) Improving starting capability: A high-power engine 300 to be tested requires a larger starting torque when starting, which generally requires a higher current. By increasing the number of batteries connected in parallel, sufficient current can be provided to meet this high demand, thereby ensuring that the engine 300 to be tested can be started smoothly.

[0055] (2) Ensure the stability of output voltage: (2.1) Voltage stability: During the starting process, if the output voltage of the battery fluctuates too much, it may cause the starter motor 205a to work unstably, and may even cause damage to the electronic control unit (ECU) or other sensitive electronic components of the engine 300 to be tested. By connecting batteries in parallel, voltage fluctuations can be reduced because each group of batteries can balance the voltage changes to a certain extent. (2.2) Reduce voltage drop: Under high load conditions, the voltage of a single battery may drop rapidly, resulting in starting failure. Parallel batteries can share the load, thereby reducing the voltage drop of a single battery and ensuring that the voltage remains at a relatively stable level throughout the starting process.

[0056] Improve reliability: By increasing the capacity of the power supply 201 and ensuring voltage stability, this design improves the reliability of the electric starting device, and the engine 300 to be tested can be started more reliably under various conditions, reducing starting failures caused by problems with the power supply 201. Extend battery life: Parallel batteries can share the load more evenly and reduce over-discharge of a single battery, thereby extending the service life of the battery. Improve starting efficiency: Stable voltage output can ensure that the starter motor 205a obtains optimal performance during the starting process, thereby improving starting efficiency and reducing starting time. In summary, the design of two sets of parallel batteries not only improves the starting ability of the electric starting device, but also ensures the stability of the voltage during the starting process, which is crucial for the smooth starting of the engine 300 to be tested and the long-term health of the battery.

[0057] Example 2

[0058] Reference Figure 1 , Figure 3-Figure 5 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that the starting member 205 includes a motor 205a and a rotating disk 205b connected to the output shaft of the motor 205a by belt transmission, and the rotating disk 205b can be detachably installed at the flywheel 302 of the engine to be tested 300. A plurality of through holes 205c are arranged in an annular manner at equal intervals on the rotating disk 205b, and each through hole 205c corresponds to the position of the bolt hole on the flywheel 302 one by one, and the bolt passes through the through hole 205c and is screwed to the bolt hole on the flywheel 302.

[0059] First, it is necessary to remove some of the multiple bolts at the flywheel 302 of the engine 300 to be tested, but not all of them. The specific method is to retain every other bolt, so that a series of empty bolt holes will be formed on the flywheel 302, and the rotating disk 205b is fitted to the flywheel 302 to ensure that the position of the rotating disk 205b is correct. The rotating disk 205b is a part of the starting member 205, which is connected to the output shaft of the motor 205a through a belt, and then long bolts are passed through the through holes 205c on the rotating disk 205b. These through holes 205c correspond to the positions of the empty bolt holes on the flywheel 302. Then, these long bolts are tightened one by one to fix the rotating disk 205b on the flywheel 302. Through the above steps, the motor 205a is connected to the flywheel 302 of the engine 300 to be tested through the rotating disk 205b and the bolts. In this way, the motor 205a can drive the flywheel 302, and then start the engine 300 to be tested.

[0060] Effects: (1) Minimized modification: This method does not require large-scale modification of the engine 300 to be tested. It only needs to remove some bolts and install the rotating disk 205b, which can reduce interference with the engine 300 to be tested and reduce the difficulty of installation and removal. (2) Uniform force: By arranging bolts at intervals, it can be ensured that the connection between the rotating disk 205b and the flywheel 302 is both firm and uniformly stressed. This can avoid damage or failure caused by uneven force. (3) Flexible installation: The multiple through holes 205c arranged at equal intervals in a ring on the rotating disk 205b make the installation process more flexible, and appropriate bolt holes can be selected for installation as needed. (4) Efficient start-up: This connection method ensures that the motor 205a can effectively drive the flywheel 302 and realize the smooth start of the engine 300 to be tested, which is crucial for the testing and maintenance of the engine 300 to be tested. (5) Removable design: The removable design of the rotating disk 205b allows it to be easily removed from the flywheel 302 after the test is completed, restoring the original state of the engine 300 to be tested.

[0061] In summary, this connection method not only simplifies the connection process between the starter motor 205a and the flywheel 302 of the engine 300 to be tested, but also ensures the firmness of the connection and the uniformity of the force, while also providing a flexible and efficient starting capability. This design has important practical significance for the testing and maintenance of the engine 300 to be tested.

[0062] The frame component 100 includes a trailer 101 and two diagonal braces 102 mounted on the trailer 101. The two diagonal braces 102 are symmetrically arranged, and the engine 300 to be tested is placed between the two diagonal braces 102. The start switch 202 is installed at the handle of the trailer 101 to ensure that the operator can easily access and operate it. The power supply 201 is placed on the trailer 101 and close to the handle.

[0063] The remaining structures are the same as those of Example 1.

[0064] Reference Figure 1-Figure 5 In summary: a method for using an engine starting device includes:

[0065] Preparation stage: (1) Ensure that the engine 300 to be tested has been placed on the trailer 101 and fixed in place by two diagonal braces 102; (2) Check all components of the engine starting device, including the power supply 201, the starting switch 202, the first relay 203, the second relay 204 (pressure relay), the motor 205a (starting element 205) and the rotating disk 205b, etc., to ensure that they are intact and function properly, and ensure that the connecting wire of the power supply 201 is long enough to connect to the starting switch 202 and the motor 205a; (3) Normally start the engine 201. One end of the start switch 202 is connected to the positive electrode of the power supply 201, and the other end is connected to the first relay 203. One end of the first relay 203 is connected in series with the start switch 202 to form an input circuit, and the other end is connected in series with the lubrication pump 301 to form an output circuit. Ensure that the connection of the first relay 203 is correct, so that when the start switch 202 is closed, the lubrication pump 301 can be activated, and the lubrication pump 301 is connected to the lubrication system of the engine 300 to be tested, ensuring that the lubrication pump 301 can extract engine oil from the oil pan and transport it to various parts of the engine through the oil channel. (4) connecting one end of the second relay 204 (pressure relay) to the pressure switch at the oil outlet of the lubrication pump 301 to form an input circuit, and the other end to the starter motor 205a in series to form an output circuit, so as to ensure that the starter motor 205a can be activated after the lubrication system reaches an appropriate pressure; (5) connecting the starter motor 205a to the flywheel 302 of the engine 300 to be tested through the rotating disk 205b, and the through holes 205c on the rotating disk 205b correspond to the bolt holes on the flywheel 302 one by one, and the rotating disk 205b is fixed by bolts. 05b is fixed on the flywheel 302, and the starter motor 205a is connected to the output end of the second relay 204 to ensure that when the second relay 204 is activated, the starter motor 205a can obtain the power supply 201 and start; (6) After completing all connections, perform preliminary tests to check the connectivity of the circuit and the function of the starting device, start the engine 300 to be tested, observe whether the lubrication system works normally, whether the pressure switch activates the second relay 204 when the set pressure is reached, and whether the starter motor 205a can successfully start the engine 300 to be tested.

[0066] Through the above steps, each part of the starting device of the engine 300 to be tested is accurately connected to the engine 300 to be tested, ensuring that the engine 300 to be tested can be started smoothly during the test process. This connection method not only ensures the accuracy and reliability of the test, but also improves the safety and efficiency of the test process.

[0067] Startup phase: close the start switch 202, connect the first circuit, and start the lubrication pump 301 to supply oil to the engine 300 to be tested;

[0068] When the output pressure of the lubrication pump 301 reaches the set value, the second relay 204 is started, and the starter 205 is turned on to drive the flywheel 302, and finally drives the engine 300 to be tested to rotate, so that the engine 300 to be tested is started.

[0069] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only several embodiments are described in detail in this disclosure, it should be easily understood by the personnel referring to this disclosure that many modifications are possible (for example, the size, scale, structure, shape and ratio of various elements, and parameter values ​​(for example, temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method step can be changed or reordered according to the alternative embodiment. Any "device plus function" clause is intended to cover the structure of the execution of the function described in this article, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiment. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0070] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An engine starting device, characterized in that: The invention comprises a frame component (100) and a starting component (200) mounted on the frame component (100); an engine to be tested is placed on the frame component (100); The starting component (200) comprises two circuits arranged in parallel, one of which is connected in series with a lubrication pump (301) of the engine (300) to be tested, and is used to start the lubrication pump (301); the starting element (205) on the other circuit is connected to a flywheel (302) of the engine (300) to be tested, and the starting element (205) is started after the output pressure of the lubrication pump (301) reaches a set value.

2. The engine starting device according to claim 1, characterized in that: The starting component (200) comprises a power supply (201), a starting switch (202), a first relay (203) and a second relay (204), wherein one end of the first relay (203) is connected in series with the starting switch (202) to form an input circuit, and the other end is connected in series with a lubrication pump (301) of the engine (300) to be tested to form an output circuit; the second relay (204) is a pressure relay, one end of the second relay (204) is connected to a pressure switch at an oil outlet position of the lubrication pump (301) to form an input circuit, and the other end is connected in series with a starting component (205) to form an output circuit, and the starting component (205) is detachably connected to a flywheel (302) of the engine (300) to be tested.

3. The engine starting device according to claim 2, characterized in that: The power supply (201), the start switch (202), the first relay (203), and the lubrication pump (301) form a first circuit by returning to the power supply (201). The first circuit is used to control the start and operation of the lubrication pump (301) to ensure that the lubrication system is fully lubricated before the engine (300) to be tested is started.

4. The engine starting device according to claim 3, characterized in that: The power source (201), the start switch (202), the second relay (204), and the starter (205) form a second circuit by returning to the power source (201). The second circuit is specifically used to control the start of the starter (205) so as to drive the flywheel (302) of the engine to be tested (300) to rotate and start the engine to be tested (300) after the lubrication system reaches an appropriate pressure.

5. The engine starting device according to claim 2 or 4, characterized in that: The power source (201) is provided with two sets of parallel-connected batteries, which are used to increase the capacity of the power source (201) and ensure the stability of the output voltage.

6. The engine starting device according to claim 1, characterized in that: The starter (205) comprises a motor (205a) and a rotating disk (205b) connected to the output shaft of the motor (205a) by belt transmission. The rotating disk (205b) is detachably mounted on the flywheel (302) of the engine (300) to be tested.

7. The engine starting device according to claim 5, characterized in that: The rotating disk (205b) is provided with a plurality of through holes (205c) at equal intervals in an annular pattern, and each of the through holes (205c) corresponds to a bolt hole on the flywheel (302) in a one-to-one manner, and bolts pass through the through holes (205c) and are screwed to the bolt holes on the flywheel (302).

8. The engine starting device according to claim 1, characterized in that: The frame component (100) comprises a trailer (101) and two diagonal braces (102) mounted on the trailer (101), the two diagonal braces (102) being symmetrically arranged, and the engine (300) to be tested is placed between the two diagonal braces (102).

9. The engine starting device according to claim 7, characterized in that: The start switch (202) is installed on the handlebar of the trailer (101), and the power source (201) is placed on the trailer (101) and close to the handlebar.

10. A method for using an engine starting device, characterized in that: The engine starting device comprises any one of claims 1 to 9, and Connect the various parts of the engine starting device to various parts of the engine to be tested; Closing the start switch, connecting the first circuit, and starting the lubrication pump to supply oil to the engine to be tested; When the lubrication pump output pressure reaches the set value, the second relay starts, the starter starts to drive the flywheel, Finally, the engine to be tested is driven to rotate, thereby starting the engine.

Images