CN111765937B - Device and method for measuring instantaneous engine oil consumption of diesel engine - Google Patents
Device and method for measuring instantaneous engine oil consumption of diesel engine Download PDFInfo
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- CN111765937B CN111765937B CN202010622913.2A CN202010622913A CN111765937B CN 111765937 B CN111765937 B CN 111765937B CN 202010622913 A CN202010622913 A CN 202010622913A CN 111765937 B CN111765937 B CN 111765937B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a device and a method for measuring instantaneous engine oil consumption of a diesel engine, belonging to the technical field of oil consumption measurement, wherein the measuring device comprises a pressure stabilizing box, the pressure stabilizing box is communicated with an oil pan through an oil inlet pipe and an oil outlet pipe, the oil inlet pipe and the oil outlet pipe are both provided with one-way valves, the pressure stabilizing box is provided with an oil dripping pipe, the oil dripping pipe is provided with an oil dripping stop valve, and an oil receiving tank is arranged below an oil dripping port of the oil dripping pipe; the check valve comprises a valve body and a valve plate arranged in the mounting groove on one side of the valve body, the upper end of the valve plate is rotatably connected with the valve body, small holes are formed in the valve plate, the oil consumption rate of the diesel engine is measured by using a liquid level balance method on the pressure stabilizing box, the liquid level can be quickly and coarsely adjusted on and off the check valve, the liquid level can be accurately and finely adjusted by the small holes in the valve plate, and the measuring precision is guaranteed.
Description
Technical Field
The invention belongs to the technical field of oil consumption measurement, and particularly relates to a device and a method for measuring instantaneous oil consumption of a diesel engine.
Background
Large marine diesel engines require measurement of oil consumption, especially instantaneous oil consumption. The direct weighing method cannot be used due to the heavy dead weight of the diesel engine; the diesel engine needs forced lubrication after shutdown and cannot be kept still; for safety, the cover plate of the engine body is not allowed to be opened in the operating process of the diesel engine and in a short time after the diesel engine is stopped, and a manual oil feeding liquid level dynamic balancing method cannot be used; in the operation process of the diesel engine, the oil pump has large flow, the oil falls back to impact the liquid level of the oil pan, so that the liquid level of the oil pan fluctuates greatly, the volume change of the oil in the oil pan is large under the influence of temperature difference, and the operability of a liquid level dynamic balance method is poor, so that whether the liquid level is balanced or not cannot be judged by oil drop counting.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method for measuring the instantaneous engine oil consumption of the diesel engine are characterized in that a damping liquid level stabilizing device is established by a one-way valve and a pressure stabilizing tank, so that the instantaneous engine oil consumption of the diesel engine is measured by a liquid level balance method.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an instantaneous engine oil consumption measuring device of a diesel engine comprises a pressure stabilizing box, wherein the pressure stabilizing box is communicated with an oil pan through an oil inlet pipe and an oil outlet pipe, check valves are respectively arranged on the oil inlet pipe and the oil outlet pipe, an oil dripping pipe is arranged on the pressure stabilizing box, an oil dripping stop valve is arranged on the oil dripping pipe, and an oil receiving box is arranged below an oil dripping port of the oil dripping pipe; the check valve comprises a valve body and a valve plate arranged in the mounting groove on one side of the valve body, the upper end of the valve plate is rotatably connected with the valve body, and the valve plate is provided with a small hole.
Furthermore, an oil inlet stop valve is arranged on the oil inlet pipe, and an oil outlet stop valve is arranged on the oil outlet pipe.
Further, the oil pan and the surge tank are both provided with liquid level tubes, and the bottom of the surge tank is provided with adjusting screws for adjusting the height of the surge tank.
The measuring method of the device for measuring the instantaneous oil consumption of the diesel engine comprises the following steps: (1) after the engine oil temperature in the oil pan is stable after the diesel engine operates for a period of time, the height of the engine oil liquid level in the oil pan is approximately the same as that of the engine oil liquid level in the pressure stabilizing box; (2) when the oil level of the oil in the oil pan is substantially the same as the height of the oil dropping pipe on the pressure stabilizing box, opening the oil dropping stop valve, closing the oil dropping stop valve when oil drops from the oil dropping port drop at the speed of 30-35 drops per minute, emptying the oil in the oil receiving box and starting timing t 1; (3) the diesel engine continuously operates under an appointed working condition, m1 engine oil is added into the pressure stabilizing box, and m1 is slightly larger than the engine oil consumption estimated quantity of the diesel engine in an appointed time; (4) the diesel engine is after the continuous operation appointed time under the appointed operating mode, opens the oil drip stop valve, oil drip department oil spilling when dripping oil with the speed of 30 ~ 35 drops per minute, closes the oil drip stop valve and end timing t2 weigh meet the machine oil volume m2 in the oil tank, calculate m1-m2 and divide by the value of t2-t 1.
Further, an oil inlet stop valve is arranged on the oil inlet pipe, an oil outlet stop valve is arranged on the oil outlet pipe, in the step (1), the diesel engine runs for a period of time, after the temperature of oil in the oil pan reaches stability, the oil inlet stop valve and the oil outlet stop valve are opened, and after the step (4) is finished, the oil inlet stop valve and the oil outlet stop valve are closed.
Furthermore, liquid level tubes are arranged on the oil pan and the pressure stabilizing box, adjusting screws for adjusting the height of the pressure stabilizing box are arranged at the bottom of the pressure stabilizing box, and in the step (1), the oil level in the pressure stabilizing box is approximately the same as the oil level in the oil pan by observing the liquid level tubes on the oil pan and the pressure stabilizing box and adjusting the adjusting screws on the pressure stabilizing box.
After the technical scheme is adopted, the invention has the beneficial effects that:
the instantaneous engine oil consumption measuring device of the diesel engine comprises a pressure stabilizing box, wherein the pressure stabilizing box is communicated with an oil pan through an oil inlet pipe and an oil outlet pipe; the check valve comprises a valve body and a valve plate arranged in a mounting groove on one side of the valve body, the upper end of the valve plate is rotatably connected with the valve body, small holes are formed in the valve plate, the on-off of the check valve can realize quick rough adjustment of liquid level in the pressure stabilizing box, the small holes in the valve plate can realize accurate fine adjustment of the liquid level, the check valve and the pressure stabilizing box can establish a damping liquid level stabilizing device by using the viscosity of engine oil, and the influence of liquid level fluctuation in the oil pan on the oil consumption rate of the liquid level balance method measuring machine is reduced.
The measuring method of the device for measuring the instantaneous oil consumption of the diesel engine comprises the following steps: (1) after the temperature of the engine oil in the oil pan is stable when the diesel engine operates for a period of time, the height of the engine oil liquid level in the oil pan is approximately the same as that of the engine oil liquid level in the pressure stabilizing box; (2) when the oil level of the engine oil in the oil pan is the same as the height of an oil dropping pipe on the pressure stabilizing box, opening an oil dropping stop valve, closing the oil dropping stop valve when oil drops at an oil dropping port drop oil at the speed of 30-35 drops per minute, emptying the engine oil in the oil receiving tank and starting timing t 1; (3) the diesel engine continuously operates under the appointed working condition, m1 engine oil is added into a pressure stabilizing box, and m1 is slightly larger than the engine oil consumption estimated quantity of the diesel engine in the appointed time; (4) after the diesel engine continuously runs for an appointed time under an appointed working condition, the oil dripping stop valve is opened, oil overflows from an oil dripping port, when oil is dripped at the speed of 30-35 drops per minute, the oil dripping stop valve is closed, the timing t2 is ended, the oil quantity m2 in the oil receiving tank is weighed, the value of m1-m2 divided by t2-t1 is calculated, the quick rough adjustment of the liquid level in the pressure stabilizing tank can be realized by the on-off of the one-way valve, the accurate fine adjustment of the liquid level is realized by the small hole on the valve plate, the running working condition of the diesel engine is unchanged in the measuring process, the influence of environmental factors is eliminated, and the measuring accuracy is ensured.
In conclusion, the device and the method for measuring the instantaneous engine oil consumption of the diesel engine solve the problem that the instantaneous engine oil consumption of a large-scale diesel engine is difficult to measure in the operation process in the prior art, utilize the damping liquid level fluctuation of two one-way valves and a pressure stabilizing box, the on-off of the one-way valves can quickly and coarsely adjust the liquid level, and the small holes in the valve plate realize accurate fine adjustment of the liquid level, so that a liquid level balance method can be implemented in an engine oil consumption rate measurement test of the large-scale diesel engine, and the measurement accuracy is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a surge tank in the instantaneous engine oil consumption measuring device of the diesel engine of the present invention;
FIG. 2 is a schematic view showing the structure of a check valve in the instantaneous oil consumption measuring device of the diesel engine according to the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view showing the state of use of the instantaneous oil consumption measuring device of the diesel engine according to the present invention;
in the figure, 1-an oil pan, 2-a pressure stabilizing box, 3-an oil inlet pipe, 4-an oil outlet pipe, 5-a one-way valve, 6-a valve body, 7-a valve plate, 8-a small hole, 9-an oil inlet stop valve, 10-an oil outlet stop valve, 11-an oil dropping pipe, 12-an oil dropping port, 13-an oil dropping stop valve, 14-a liquid level pipe, 15-an adjusting screw and 16-an oil receiving tank.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.
The first embodiment is as follows:
as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the instantaneous engine oil consumption measuring device for the diesel engine comprises a pressure stabilizing tank 2, wherein the pressure stabilizing tank 2 is communicated with an oil pan 1 through an oil inlet pipe 3 and an oil outlet pipe 4, and the oil inlet pipe 3 and the oil outlet pipe 4 are both provided with a one-way valve 5. The check valve 5 comprises a valve body 6 and a valve plate 7 arranged in a mounting groove on one side of the valve body, the upper end of the valve plate 7 is rotatably connected with the valve body 6, and when oil flows through the check valve 5 from one side of the valve body 6 which is not connected with the valve plate 7, the valve plate 7 is opened. The valve plate 7 is provided with a small hole 8, and the two one-way valves 5 are arranged in opposite directions. An oil dripping pipe 11 is arranged on the pressure stabilizing box 2, an oil dripping stop valve 13 is arranged on the oil dripping pipe 11, and an oil receiving box 16 is arranged below an oil dripping port 12 of the oil dripping pipe 11. The oil pressure in the surge tank 2 is consistent with that in the oil pan 1.
As shown in fig. 1 and 4, an oil inlet stop valve 9 is arranged on the oil inlet pipe 3, an oil outlet stop valve 10 is arranged on the oil outlet pipe 4, the oil inlet stop valve 9 and the oil outlet stop valve 10 can be opened when measurement is started, and the measurement is closed after the measurement is finished. The oil pan 1 and the surge tank 2 are both provided with a liquid level tube 14, the bottom of the surge tank 2 is provided with an adjusting screw 15 for adjusting the height of the surge tank 2, the oil pan 1 and the liquid level tube 14 on the surge tank 2 can be observed through the adjusting screw 15 on the surge tank 2, so that the oil level in the surge tank 2 is substantially the same as that in the oil pan 1, and the time for achieving liquid level balance is reduced.
The liquid level fluctuation of the oil pan 1 is large, the oil level fluctuation of viscous oil in the pressure stabilizing box 2 is small after the viscous oil passes through the one-way valve 5, and the oil consumption rate of the diesel engine can be measured by using a liquid level balance method on the pressure stabilizing box 2.
Example two:
as shown in fig. 4, the measuring method of the instantaneous oil consumption measuring device of the diesel engine includes the following steps:
(1) after the temperature of the engine oil in the oil pan 1 is stable in a period of operation of the diesel engine, the oil inlet stop valve 9 on the oil inlet pipe 3 and the oil outlet stop valve 10 on the oil outlet pipe 4 are opened, and the liquid level of the engine oil in the pressure stabilizing box 2 is approximately the same as that of the engine oil in the oil pan 1 by observing the liquid level pipes 14 on the oil pan 1 and the pressure stabilizing box 2 and adjusting the adjusting screws 15 on the pressure stabilizing box 2.
(2) When the engine oil liquid level in the oil pan 1 is the same as the height of the oil dripping pipe 11, the oil dripping stop valve 13 is opened, and the liquid level condition is judged by observing the oil dripping condition of the oil dripping port 12. When the oil drops in the oil dropping port 12 at the speed of 30-35 drops per minute, the liquid level is considered to be balanced, the oil dropping stop valve 13 is closed, the engine oil in the oil receiving tank 16 is emptied, and the timing t1 is started.
(3) The diesel engine is continuously operated under the appointed working condition, m1 engine oil is added into the pressure stabilizing box 2, and m1 is slightly larger than the estimated amount of the engine oil consumption of the diesel engine in the appointed time.
(4) After the diesel engine continuously runs for an appointed time under an appointed working condition, the oil dripping stop valve 13 is opened, oil overflows from the oil dripping port 12, when oil is dripped at the speed of 30-35 drops per minute, the liquid level is considered to be balanced, the oil dripping stop valve 13 is closed, timing t2 is ended, the oil quantity m2 in the oil receiving tank 16 is weighed, and the value of dividing m1-m2 by t2-t1 is calculated.
(5) And (5) after the measurement is finished, closing the oil inlet stop valve 9 and the oil outlet stop valve 10.
The liquid level fluctuation of the oil bottom shell 1 is large, the oil level fluctuation of viscous oil in the pressure stabilizing box 2 after passing through the one-way valve 5 is small, and therefore the liquid level balance method can be used for measuring on the pressure stabilizing box 2. The difference value between m1 and m2 is the oil consumption of the diesel engine in the appointed operation time, the instantaneous oil consumption of the diesel engine in the appointed operation time can be obtained by dividing m1-m2 by t2-t1, wherein the appointed time is generally 16 h-24 h, the appointed operation time can be a rated operation condition or other operation conditions, and the instantaneous oil consumption of the diesel engine in the appointed operation time can be obtained as long as the instantaneous oil consumption is not changed in the appointed operation time.
The device and the method for measuring the instantaneous oil consumption of the diesel engine are characterized in that a pressure stabilizing tank is arranged and is communicated with an oil pan through an oil inlet pipe and an oil outlet pipe, and one-way valves are arranged on the oil inlet pipe and the oil outlet pipe. The check valve comprises a valve body and a valve plate, the upper end of the valve plate is rotatably connected with the valve body, small holes are formed in the valve plate, and liquid level fluctuation is damped by the aid of the small holes in the pressure stabilizing box and the check valve plate, so that the liquid level consumption rate of the diesel engine can be measured by a liquid level balancing method on the pressure stabilizing box, the liquid level can be roughly adjusted quickly when the check valve is switched on and off, the liquid level can be finely adjusted accurately by the aid of the small holes in the valve plate, and measuring accuracy is guaranteed.
While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the described embodiments are only some, and not all, of the present invention, which is presented by way of example only, and the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the invention, and these changes and modifications all fall within the scope of the invention.
Claims (6)
1. The instantaneous engine oil consumption measuring device of the diesel engine is characterized by comprising a pressure stabilizing box, wherein the pressure stabilizing box is communicated with an oil pan through an oil inlet pipe and an oil outlet pipe, one-way valves for realizing coarse adjustment of liquid level are mounted on the oil inlet pipe and the oil outlet pipe, an oil dripping pipe is arranged on the pressure stabilizing box and used for judging whether the liquid levels of the pressure stabilizing box and the oil pan are level or not according to the oil dripping speed of the oil dripping pipe, an oil dripping stop valve is arranged on the oil dripping pipe, an oil receiving box is arranged below an oil dripping port of the oil dripping pipe, and the instantaneous engine oil consumption of the diesel engine is calculated according to the engine oil amount in the oil receiving box, the operating time of the diesel engine and the time when the pressure stabilizing box is level with the liquid level of the oil pan; the check valve includes the valve body and installs the valve plate in the mounting groove of valve body one side, the upper end of valve plate with the valve body rotates to be connected, offer the aperture that is used for realizing the liquid level fine tuning on the valve plate.
2. The instantaneous engine oil consumption measuring device of the diesel engine according to claim 1, wherein an oil inlet stop valve is arranged on the oil inlet pipe, and an oil outlet stop valve is arranged on the oil outlet pipe.
3. The instantaneous engine oil consumption measuring device of the diesel engine according to claim 1 or 2, wherein the oil pan and the surge tank are both provided with liquid level tubes, and the bottom of the surge tank is provided with adjusting screws for adjusting the height of the surge tank.
4. The method for measuring an instantaneous oil consumption measuring device of a diesel engine according to claim 1, characterized by comprising the steps of:
(1) after the engine oil temperature in the oil pan is stable after the diesel engine operates for a period of time, the height of the engine oil liquid level in the oil pan is approximately the same as that of the engine oil liquid level in the pressure stabilizing box;
(2) when the oil level of the oil in the oil pan is substantially the same as the height of the oil dropping pipe on the pressure stabilizing box, opening the oil dropping stop valve, closing the oil dropping stop valve when oil drops from the oil dropping port drop at the speed of 30-35 drops per minute, emptying the oil in the oil receiving box and starting timing t 1;
(3) the diesel engine continuously operates under an appointed working condition, m1 engine oil is added into the pressure stabilizing box, and m1 is slightly larger than the engine oil consumption estimated quantity of the diesel engine in an appointed time;
(4) The diesel engine is after the continuous operation appointed time under the appointed operating mode, opens the oil drip stop valve, oil drip department oil spilling when with the speed oil drip of 30 ~ 35 drips per minute, closes the oil drip stop valve and end timing t2, weigh connect the engine oil volume m2 in the oil tank, calculate m1-m2 and divide by the value of t2-t 1.
5. The method according to claim 4, wherein an oil inlet stop valve is arranged on the oil inlet pipe, an oil outlet stop valve is arranged on the oil outlet pipe, the oil inlet stop valve and the oil outlet stop valve are opened after the diesel engine runs for a period of time and the temperature of oil in the oil pan is stable in step (1), and the oil inlet stop valve and the oil outlet stop valve are closed after step (4) is finished.
6. The measuring method of the instantaneous engine oil consumption measuring device of the diesel engine according to claim 5, characterized in that liquid level tubes are arranged on the oil pan and the surge tank, adjusting screws for adjusting the height of the surge tank are arranged at the bottom of the surge tank, and in the step (1), the oil level in the surge tank is substantially the same as the oil level in the oil pan by observing the liquid level tubes on the oil pan and the surge tank and adjusting the adjusting screws on the surge tank.
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| CN202010622913.2A CN111765937B (en) | 2020-06-30 | 2020-06-30 | Device and method for measuring instantaneous engine oil consumption of diesel engine |
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| CN202010622913.2A CN111765937B (en) | 2020-06-30 | 2020-06-30 | Device and method for measuring instantaneous engine oil consumption of diesel engine |
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| CN111765937B true CN111765937B (en) | 2022-05-31 |
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| CN113586201A (en) * | 2021-08-25 | 2021-11-02 | 中车资阳机车有限公司 | Diesel engine oil consumption measuring device and method |
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