Oil supply timing detection device for small and medium-sized diesel engines
By designing a diesel engine oil supply timing detection device, the liquid level changes are observed using cover-type hexagonal steel nuts and capillaries, combining syringes and red dyed diesel to improve observation convenience, and alarm the fibre optical sensor and buzzer through a U-shaped alarm, solving the error and operation difficulties in traditional detection methods, achieving more efficient and accurate oil supply timing detection.
Patent Information
- Application Number
- CN202411670670.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional diesel engine oil supply timing detection method has problems such as large errors, difficult oil level to be observed, and the oil supply advance angle is too large or too small, which requires manpower to judge, which is time-consuming and labor-intensive.
Design a small and medium-sized diesel engine oil supply timing detection device, including a high-pressure oil pump, detection component, injection component and alarm component. The detection component observes liquid level changes through cover-type hexagonal steel nuts and capillaries, the injection component improves observation convenience through syringes and red dyed diesel, and the alarm component alarms the fibre-optic sensor and buzzer through a U-shaped shape.
It improves the accuracy of measuring the oil supply advance angle, simplifies the operation process, reduces errors in manpower judgment, and achieves more efficient and reliable oil supply timing detection.
Smart Images
Figure CN119593918A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of diesel engine fuel supply detection, in particular to a fuel supply timing detection device for small and medium-sized diesel engines. Background Art
[0002] When using small and medium-sized diesel engines, it is necessary to detect the fuel supply timing of the diesel engine to obtain the fuel supply advance angle, which is a necessary step based on the working principle of the diesel engine and the performance optimization requirements. By regularly detecting the fuel supply of the diesel engine, the fuel supply advance angle can be adjusted to meet the needs under different working conditions.
[0003] In reality, the common method for regularly checking the fuel supply of diesel engines and obtaining the fuel supply advance angle is the oil bubbling method. However, the traditional method of visually observing the rising oil level by turning the wheel to observe the flywheel scale may lead to large errors, and the oil level may be difficult to observe. In addition, when the fuel supply advance angle is detected to be too large or too small, the operator needs to rely on manual judgment, which is time-consuming and laborious.
[0004] Therefore, those skilled in the art have proposed a fuel supply timing detection device for small and medium-sized diesel engines to solve the problems raised by the background technology.
[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of the present invention and therefore, it may include information that does not constitute the prior art known to ordinary technicians in this field. Summary of the invention
[0006] In order to solve the above technical problems, the present invention provides a fuel supply timing detection device for small and medium-sized diesel engines to solve the problems in the prior art that the oil bubbling method may cause large errors, the oil level may be difficult to observe, and when the fuel supply advance angle is too large or too small, the operator needs to rely on manual judgment, which is time-consuming and labor-intensive.
[0007] To achieve the above-mentioned purpose, the present invention provides a fuel supply timing detection device for small and medium-sized diesel engines, including a high-pressure oil pump; a detection component, the detection component includes a cover-type hexagonal steel nut arranged at the end of the high-pressure oil pump, and a capillary is arranged in the cover-type hexagonal steel nut; an injection component, the injection component includes a connecting pipe arranged on the cover-type hexagonal steel nut, and a syringe is inserted at the end of the connecting pipe; an alarm component, the alarm component includes a buzzer and a U-shaped opposing groove type optical fiber sensor.
[0008] Preferably, an oil pipe is fixedly connected to the high-pressure oil pump, a rack is provided on the high-pressure oil pump, and a venting cock is provided on the high-pressure oil pump.
[0009] Preferably, the cap-shaped hexagonal steel nut is provided with a rubber ring, and the rubber ring is sleeved on the capillary tube.
[0010] Preferably, the end of the cap-type hexagonal steel nut is provided with a D-shaped straight-through convex head, and the bottom of the capillary tube is in a bell-mouth shape.
[0011] Preferably, an open-and-close quick connector is provided on the cover-type hexagonal steel nut, and a stop valve is provided on the connecting pipe.
[0012] Preferably, one end of the connecting tube away from the syringe is inserted into the open-close quick connector, and the size of the connecting tube is adapted to the size of the opening of the open-close quick connector.
[0013] Preferably, the syringe comprises an injection tube inserted into the end of the connecting tube, and a piston push rod is slidably connected in the injection tube.
[0014] Preferably, the size of the piston push rod is matched with the size of the injection tube opening, and a cavity is formed between the end of the piston push rod and the injection tube, and red dyed diesel is arranged in the cavity.
[0015] Preferably, the alarm component further comprises a power supply board, an optical fiber amplifier, and a magnetic stand, and a bracket is fixedly connected to the magnetic stand.
[0016] Preferably, the power board, buzzer, optical fiber amplifier and U-shaped counter-fiber optic sensor are connected via a plurality of connecting wires, and the U-shaped counter-fiber optic sensor is rotatably connected to the bracket.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. The present invention arranges a cap-shaped hexagonal steel nut and a capillary at the outlet of the high-pressure oil pump, turns the engine according to the normal operating direction of the main engine, and closely observes the change of the liquid level in the capillary. When the liquid level changes, the accuracy of measuring the advance angle of the fuel supply is improved by utilizing the characteristic that the liquid level in the glass capillary rises sharply when the liquid in the capillary changes slightly.
[0019] 2. The present invention uses a syringe to add red dye to the test diesel to avoid the difficulty in observing the diesel in the capillary tube, and uses a syringe to fill or extract the test diesel, and installs a stop valve in the middle of the connecting pipe to avoid inaccurate measurement caused by the flow of test liquid through the pipeline during the test. The red dyed diesel can directly observe the liquid level changes in the capillary tube, which is easy to observe.
[0020] 3. The present invention sets a U-shaped optical fiber sensor and an optical fiber signal amplifier, adjusts the magnetic table base, and places the U-shaped optical fiber sensor set on the magnetic table base bracket vertically to the capillary tube horizontally 1 to 2 mm above the liquid level, and ensures that the center line of the sensor probe is on the center of the capillary tube, so that the liquid level change can be alarmed by light and buzzer, thereby accurately detecting the fuel supply advance angle of the diesel engine high-pressure oil pump. The present invention is easy to obtain materials, easy to make, and can be reused. If a variable diameter is used for connection, it can be universal for various models.
[0021] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of a fuel supply timing detection device for small and medium-sized diesel engines in an embodiment of the present invention;
[0023] Figure 2 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.
[0024] In the figure:
[0025] 1. High-pressure oil pump; 11. Oil pipe; 12. Rack; 13. Vent cock;
[0026] 2. Detection assembly; 21. Cap-type hexagonal steel nut; 22. Rubber ring; 23. Capillary;
[0027] 3. Injection assembly; 31. Open and close quick connector; 32. Connecting pipe; 33. Stop valve; 34. Syringe; 341. Injection tube; 342. Piston push rod;
[0028] 4. Alarm component; 41. Power board; 42. Buzzer; 43. Optical fiber amplifier; 44. U-shaped beam-slot type optical fiber sensor; 45. Magnetic meter stand; 46. Adjustment stand. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.
[0030] Embodiment 1:
[0031] See also Figure 1 - Figure 2 As shown, a small and medium-sized diesel engine fuel supply timing detection device includes a high-pressure oil pump 1. The high-pressure oil pump 1 is a core component in the diesel engine fuel system. Its function is to extract fuel from the fuel tank and compress it to a high-pressure state, and then spray it into the combustion chamber through the fuel injection nozzle, so as to realize the combustion of the diesel engine;
[0032] The detection component 2 includes a cap-shaped hexagonal steel nut 21 disposed at the end of the high-pressure oil pump 1. A capillary 23 is disposed in the cap-shaped hexagonal steel nut 21. The cap-shaped hexagonal steel nut 21 is threadedly connected to the outlet of the high-pressure oil pump 1. The capillary 23 is made of transparent tempered glass. The capillary 23 has the characteristic that the liquid level of the glass capillary 23 rises sharply when the liquid in the tube changes slightly.
[0033] The injection assembly 3 includes a connecting tube 32 arranged on a cap-shaped hexagonal steel nut 21, and a syringe 34 is inserted at the end of the connecting tube 32. The connecting tube 32 is made of a seamless steel tube, and the syringe 34 is made of a plastic material, and is used to fill or extract the test diesel;
[0034] The alarm component 4 includes a buzzer 42 and a U-shaped opposite-beam slot type optical fiber sensor 44. The buzzer 42 is used to emit an alarm sound to achieve the purpose of reminding people to pay attention. The U-shaped opposite-beam slot type optical fiber sensor 44 has a transmitter and a receiver at both ends to emit light and receive signals. The circuit inside the U-shaped opposite-beam slot type optical fiber sensor 44 will detect the change of light being blocked and trigger a corresponding output signal. This signal can be used by the control system to execute the buzzer 42 to turn on.
[0035] Specifically, an oil pipe 11 is fixedly connected to the high-pressure oil pump 1, a rack 12 is provided on the high-pressure oil pump 1, and a bleed cyclone 13 is provided on the high-pressure oil pump 1. The oil pipe 11 is used to transport fuel, and the rack 12 can move the sleeve in the high-pressure oil pump 1 up and down to change the injection timing to adapt to different working conditions and improve combustion efficiency and engine performance. The design of the bleed cyclone 13 allows the staff to quickly release the pressure inside the oil pump by operating the bleed cyclone 13 before disassembling the high-pressure oil pump 1, thereby ensuring the safety of operation.
[0036] Furthermore, a rubber ring 22 is provided on the cap-shaped hexagonal steel nut 21, and the rubber ring 22 is sleeved on the capillary 23. The rubber ring 22 fits tightly to the capillary 23, and glue is poured between the bell mouth of the capillary 23 and the cap-shaped hexagonal steel nut 21 to seal the capillary 23 and prevent leakage.
[0037] Furthermore, the end of the cap-shaped hexagonal steel nut 21 is provided with a D-shaped straight-through convex head, and the cap-shaped hexagonal steel nut 21 can be screwed on the outlet of the high-pressure oil pump 1, and the bottom of the capillary tube 23 is in a bell-mouth shape.
[0038] As can be seen from the above, when it is necessary to detect the fuel supply advance angle of small and medium-sized diesel engines, first, remove the joint between the outlet of the high-pressure oil pump 1 to be tested and the fuel injector oil inlet pipe 11, turn the car until the outlet of the high-pressure oil pump 1 is filled with oil (if the outlet is full of oil, this step can be omitted), and ensure that the fuel supply cam of the high-pressure oil pump 1 of the cylinder is in the base circle position, screw on the cover-type hexagonal steel nut 21 at the outlet of the high-pressure oil pump 1, and insert the capillary 23 into the cover-type hexagonal steel nut 21, and seal it with the rubber ring 22 set on the cover-type hexagonal steel nut 21 to prevent leakage, finally, turn the car according to the normal operating direction of the main engine, and closely observe the changes in the liquid level in the capillary 23. When the liquid level changes, the accuracy of measuring the fuel supply advance angle is improved by utilizing the characteristics that the liquid in the capillary 23 changes slightly and the liquid level of the glass capillary 23 rises sharply.
[0039] Embodiment 2:
[0040] See also Figure 1 As shown, this embodiment is basically the same as the previous embodiment, except that an open-close quick connector 31 is provided on the cover-type hexagonal steel nut 21, and a stop valve 33 is provided on the connecting pipe 32. The open-close quick connector 31 can quickly connect the connecting pipe 32 therein. When not connected, it is in a closed state and will not leak oil. The stop valve 33 is used to prevent the test liquid from flowing through the pipeline during the test, resulting in inaccurate measurement.
[0041] Specifically, one end of the connecting tube 32 away from the syringe 34 is inserted into the open-close quick connector 31, and the open-close quick connector 31 is inserted into the cover-type hexagonal steel nut 21. The size of the connecting tube 32 is adapted to the size of the opening of the open-close quick connector 31 to prevent leakage.
[0042] Furthermore, the injector 34 includes an injection tube 341 inserted into the end of the connecting tube 32, and a piston push rod 342 is slidably connected in the injection tube 341. The injection tube 341 is used to contain red dyed diesel. The injection tube 341 is made of transparent plastic, which can easily show the content of red dyed diesel inside. When the piston push rod 342 moves forward, it will push the red dyed diesel to flow out.
[0043] Furthermore, the size of the piston push rod 342 is adapted to the size of the opening of the injection tube 341 , and a cavity is formed between the end of the piston push rod 342 and the injection tube 341 , in which red dyed diesel is arranged. The red dyed diesel is bright and eye-catching, and is easy to observe.
[0044] As can be seen from the above, in order to avoid the diesel being difficult to observe in the capillary 23, red dye is added to the test diesel, and the piston push rod 342 is pushed to push the red dyed diesel in the cavity formed between the end of the piston push rod 342 and the injection tube 341. When the test red dyed diesel is filled or extracted, the red dyed diesel flows out through the connecting pipe 32, and a stop valve 33 is installed in the middle of the connecting pipe 32 to avoid inaccurate measurement caused by the test liquid flowing through the pipeline during the test, so that the red dyed diesel is in the middle of the capillary 23, and the red dyed diesel can directly observe the liquid level changes in the capillary 23, which is convenient for observation.
[0045] Embodiment three:
[0046] See also Figure 1 As shown, this embodiment is basically the same as the previous embodiment, except that the alarm component 4 also includes a power board 41, an optical fiber amplifier 43, and a magnetic stand 45. A bracket is fixedly connected to the magnetic stand 45. The power board 41 is used to provide a driving source. The optical fiber amplifier 43 is a device for amplifying optical signals. The optical signal is amplified by injecting laser light waves that can enhance the optical signal into the optical fiber. The working principle is to amplify the low-power optical signal into a high-power optical signal through an adjustable electronic circuit, and effectively suppress distortion, thereby improving the signal transmission performance. The magnetic stand 45 has a cleaning magnetism to make the magnetic stand 45 more stable. The bracket is a two-end arrangement, and the two ends are rotatably connected.
[0047] Specifically, the power board 41, the buzzer 42, the optical fiber amplifier 43 and the U-shaped counter-beam slot type optical fiber sensor 44 are connected by a number of connecting wires, and the power board 41, the buzzer 42, the optical fiber amplifier 43 and the U-shaped counter-beam slot type optical fiber sensor 44 are powered by the connecting wires, and the U-shaped counter-beam slot type optical fiber sensor 44 is rotatably connected to the bracket.
[0048] As can be seen from the above, the bracket on the magnetic meter base 45 is adjusted, and the U-shaped opposing optical fiber sensor set on the bracket of the magnetic meter base 45 is placed vertically to the capillary 23 and horizontally 1 to 2 mm above the liquid level, and the center line of the opposing sensor probe is ensured to be on the center of the capillary 23. The U-shaped opposing slot optical fiber sensor 44 has a transmitter and a receiver at both ends, which are used to emit light and receive signals. The circuit in the U-shaped opposing slot optical fiber sensor 44 will detect the change of light being blocked and trigger the corresponding output signal. This signal can be used by the control system to execute the buzzer 42 to turn on, and the light and buzzer alarm can be used for the liquid level change, thereby accurately detecting the fuel supply advance angle of the diesel engine high-pressure oil pump 1. The device is easy to obtain materials, easy to make, and can be reused. If a reducer is used for connection, it can be used for various models.
[0049] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0050] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.
[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0054] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.
[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fuel supply timing detection device for small and medium-sized diesel engines, characterized in that: include, High pressure oil pump (1); A detection assembly (2), the detection assembly (2) comprising a cap-shaped hexagonal steel nut (21) arranged at the end of the high-pressure oil pump (1), wherein a capillary (23) is arranged in the cap-shaped hexagonal steel nut (21); An injection assembly (3), the injection assembly (3) comprising a connecting tube (32) arranged on a cap-shaped hexagonal steel nut (21), a syringe (34) being inserted at the end of the connecting tube (32); An alarm component (4), the alarm component (4) comprising a buzzer (42) and a U-shaped opposing beam slot type optical fiber sensor (44).
2. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 1, characterized in that: The high-pressure oil pump (1) is fixedly connected to an oil pipe (11), the high-pressure oil pump (1) is provided with a rack (12), and the high-pressure oil pump (1) is provided with a venting cock (13).
3. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 2, characterized in that: The cap-shaped hexagonal steel nut (21) is provided with a rubber ring (22), and the rubber ring (22) is sleeved on the capillary (23).
4. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 3, characterized in that: The end of the cap-shaped hexagonal steel nut (21) is provided with a D-shaped straight-through convex head, and the bottom of the capillary tube (23) is in a bell-mouth shape.
5. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 4, characterized in that: The cap-shaped hexagonal steel nut (21) is provided with an open-and-close quick connector (31), and the connecting pipe (32) is provided with a stop valve (33).
6. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 5, characterized in that: One end of the connecting tube (32) away from the syringe (34) is inserted into the open-close quick connector (31), and the size of the connecting tube (32) is adapted to the size of the opening of the open-close quick connector (31).
7. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 6, characterized in that: The syringe (34) comprises an injection tube (341) inserted into the end of the connecting tube (32), and a piston push rod (342) is slidably connected in the injection tube (341).
8. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 7, characterized in that: The size of the piston push rod (342) is matched with the size of the opening of the injection tube (341), and a cavity is formed between the end of the piston push rod (342) and the injection tube (341), and red dyed diesel is arranged in the cavity.
9. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 8, characterized in that: The alarm component (4) further comprises a power supply board (41), an optical fiber amplifier (43), and a magnetic table base (45), wherein a bracket is fixedly connected to the magnetic table base (45).
10. A fuel supply timing detection device for small and medium-sized diesel engines according to claim 9, characterized in that: The power board (41), buzzer (42), optical fiber amplifier (43) and U-shaped counter-beam slot optical fiber sensor (44) are connected via a plurality of connecting wires, and the U-shaped counter-beam slot optical fiber sensor (44) is rotatably connected to the bracket.