Engine combustion chamber volume testing equipment

Abstract

The present application provides an engine combustion chamber volume detection device. The device comprises: a liquid storage bottle, a burette and a recovery pipe between the liquid storage bottle and the combustion chamber to be tested, so that the liquid storage bottle and the combustion chamber to be tested are interconnected; a vacuum pump interconnected with the burette is arranged inside the liquid storage bottle; a peristaltic pump is arranged on the pipeline of the recovery pipe; and a digital titrator is arranged on the pipeline of the burette. The engine combustion chamber volume detection device provided by the present application can solve the problem that the entire measurement process is time-consuming and labor-intensive, uses many tools, has low work efficiency, and increases labor costs.

Description

Technical Field

[0001] The present application relates to the technical field of engine manufacturing, and in particular to an engine combustion chamber volume detection device. Background Art

[0002] The compression ratio is an important parameter for measuring the performance of automobile engines, that is, the ratio of the total volume of the cylinder to the volume of the combustion chamber. The size of the combustion chamber volume has an important influence on the power, economy, working stability and emission characteristics of the engine. Therefore, it is necessary to test it in actual production. Because the cylinder of the V-type engine is inclined, it is difficult to quickly and accurately complete the measurement of the combustion chamber volume of the cylinder. The existing means of measuring the combustion chamber of the engine cylinder are very cumbersome to prepare, and are not accurate and convenient enough. It is necessary to first fill the titration bottle with liquid and then inject it into the combustion chamber. When the combustion chamber is full, the reading is recorded, and then the liquid is extracted and poured into the designated container in batches with a manual pipette. The whole process is time-consuming and labor-intensive, uses many tools, has low work efficiency, increases labor costs, and greatly affects the assembly progress in the trial production stage. Therefore, portable and accurate tools are needed to reduce the time waste caused by multiple actions in the entire detection process. Utility Model Content

[0003] The purpose of this application is to provide an engine combustion chamber volume detection device that can solve at least one of the above-mentioned technical problems. The specific solution is as follows:

[0004] According to a specific embodiment of the present application, the present application provides an engine combustion chamber volume detection device, comprising:

[0005] A liquid storage bottle, a burette and a recovery tube are provided between the liquid storage bottle and the combustion chamber to be tested, so that the liquid storage bottle and the combustion chamber to be tested are connected to each other;

[0006] A vacuum pump connected to the burette is arranged inside the liquid storage bottle;

[0007] A peristaltic pump is provided on the pipeline of the recovery pipe;

[0008] A digital titrator is arranged on the pipeline of the burette.

[0009] Optionally, the digital titrator is connected to a digital titrator switch.

[0010] Optionally, a digital titrator draws the liquid for combustion chamber measurements.

[0011] Optionally, the peristaltic pump is connected to a peristaltic pump switch.

[0012] Optionally, a peristaltic pump is used to recover the measured liquid.

[0013] Optionally, a filtering device is also provided on the recovery pipe.

[0014] Optionally, the peristaltic pump recovers the liquid into the liquid storage bottle through the filtering device.

[0015] Optionally, a rotating knob is also provided on the pipeline of the burette.

[0016] Optionally, the liquid in the liquid storage bottle is drawn out through a vacuum pump and a water inlet pipe by turning a rotary knob and then input from a burette into the combustion chamber to be tested for liquid titration.

[0017] Optionally, the liquid storage bottle is also connected with: a water inlet pipe.

[0018] Compared with the prior art, the above solution of the embodiment of the present application has at least the following beneficial effects:

[0019] The liquid recovery function of the present application can reduce manpower and eliminate the need to use the original multiple tools to recover liquid, thereby reducing the operating steps, improving the efficiency of measuring the engine combustion chamber volume, eliminating the operational difficulties caused by the inconvenience of existing detection methods, reducing measurement time and improving assembly progress, making measurement operations more accurate and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural diagram of an engine combustion chamber volume detection device provided in an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of a device provided in an embodiment of the present application;

[0022] Figure 3 It is a device connection diagram provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 1-digital titrator; 2-rotating knob; 3-recovery tube; 4-burette; 5-tested combustion chamber; 6-liquid storage bottle; 7-peristaltic pump; 8-peristaltic pump switch; 9-digital titrator switch; 10-filter device; 11 vacuum pump; 12-water inlet pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0026] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0027] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0028] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0029] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0030] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0031] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0032] The optional embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] The purpose of the utility model is to solve the problem that the entire measurement process is time-consuming and labor-intensive, uses many tools, has low work efficiency, and increases labor costs, and to provide a new type of engine combustion chamber liquid recovery device and measurement method, which can accurately and portable detection, save manpower, and improve production efficiency. The technical solution adopted by the utility model to achieve the above purpose is the engine combustion chamber volume liquid level measurement method. The utility model is an engine combustion chamber volume detection device, and a volume measuring instrument and a liquid recovery system are installed in the body. It can accurately measure the combustion chamber volume of various types of engines in conjunction with a glass pressure plate. It has stable and reliable operation and can adapt to flexible production detection.

[0034] First, wipe and remove impurities on the surface of the combustion chamber 5 to ensure that the surface cleanliness of the combustion chamber is good, turn on the digital titrator switch 9 and use the measuring device digital titrator 1 (this digital titrator is an integrated device), turn the rotary knob 2 to extract the liquid in the liquid storage bottle 6 through the vacuum pump 11 and the water inlet pipe 12, and then input it from the burette 4 into the combustion chamber 5 to be tested for liquid titration, check and record the value on the digital titrator 1, and complete the measurement. After completing the titration measurement, turn on the peristaltic pump 8 switch to start the peristaltic pump 7, so that the liquid in the combustion chamber 5 to be tested is sucked back by the recovery pipe 3, filtered by the filter device 10 for impurities, and recovered to the liquid storage bottle 6, completing the entire combustion chamber volume measurement and liquid recovery work.

[0035] The device provides a 5V power supply to connect the peristaltic pump 7 and the digital titrator 1. Liquid is extracted through the digital titrator 1 for combustion chamber measurement, and the peristaltic pump 7 is used to recover the measured liquid. Usually, two people are required to operate the titration and liquid recovery at the same time during the entire measurement process. The liquid recovery function of the utility model can reduce one manpower, no longer need to use the original multiple tools to recover the liquid, reduce the operation steps, improve the efficiency of measuring the engine combustion chamber volume, eliminate the operational difficulties caused by the inconvenience of the existing detection method, reduce the measurement time, improve the assembly progress, and make the measurement operation more accurate and convenient.

[0036] Detection method:

[0037] Take the detection of the combustion chamber volume of the cylinder of a V12 engine as an example: first wipe the combustion chamber 5 to be tested and the top surface of the piston to keep it clean and free of impurities, use a dial indicator to find the top dead center of the piston. At this time, the top dead center of the piston is higher than the top surface of the cylinder and cannot be detected by the traditional titration method. The dial indicator can be used to sink the piston 5mm, and vaseline is applied to the gap between the top surface of the piston and the inner wall of the cylinder hole for sealing. Apply vaseline to the transparent glass cover plate to seal and press it tightly on the top surface of the cylinder body, turn on the switch of the digital titrator 9, collect the liquid through the water inlet pipe 12 and the burette 4 and flow into the combustion chamber 5 to be tested, and move the transparent glass cover plate to remove bubbles as the liquid flows in until the entire combustion chamber 5 to be tested is filled and no liquid overflows. At this time, observe the value displayed on the digital titrator 1 and record the volume value. Then remove a small opening of the glass cover plate to insert the recovery pipe 3 and turn on the peristaltic pump switch 8 to start the peristaltic pump 7 to start recovering the liquid, and recover the liquid into the liquid storage bottle 6 through the filtration device 10. The volume from the top of the piston to the upper surface of the cylinder block V1 = the volume from the top of the piston to the upper surface of the cylinder block after sinking 5mm - the volume of the cylinder barrel 5mm. Use the same device to measure the cylinder head volume V2, then V1+V2 can be used to get the total volume of the engine combustion chamber.

[0038] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An engine combustion chamber volume detection device, characterized in that: include: A liquid storage bottle, a burette and a recovery tube are provided between the liquid storage bottle and the combustion chamber to be tested, so that the liquid storage bottle and the combustion chamber to be tested are connected to each other; A vacuum pump connected to the burette is arranged inside the liquid storage bottle; A peristaltic pump is provided on the pipeline of the recovery pipe; A digital titrator is arranged on the pipeline of the burette.

2. The device according to claim 1, characterized in that The digital titrator is connected to a digital titrator switch.

3. The device according to claim 2, characterized in that The digital titrator draws liquid for combustion chamber measurement.

4. The device according to claim 1, characterized in that The peristaltic pump is connected to a peristaltic pump switch.

5. The device according to claim 4, characterized in that A peristaltic pump recovers the measured liquid.

6. The device according to claim 1, characterized in that A filtering device is also provided on the pipeline of the recovery pipe.

7. The device according to claim 6, characterized in that The peristaltic pump recovers the liquid into the liquid storage bottle through the filtering device.

8. The device according to claim 1, characterized in that A rotating knob is also provided on the pipeline of the burette.

9. The device according to claim 8, characterized in that By turning the rotary knob, the liquid in the liquid storage bottle is extracted through the vacuum pump and the water inlet pipe, and then input from the burette into the combustion chamber to be tested for liquid titration.

10. The device according to claim 1, characterized in that The liquid storage bottle is also connected with a water inlet pipe.

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