CN109944790B - Engine oil pump detection device and detection method - Google Patents
Engine oil pump detection device and detection method Download PDFInfo
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- CN109944790B CN109944790B CN201910263649.5A CN201910263649A CN109944790B CN 109944790 B CN109944790 B CN 109944790B CN 201910263649 A CN201910263649 A CN 201910263649A CN 109944790 B CN109944790 B CN 109944790B
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Abstract
The invention provides a device and a method for detecting an engine oil pump, and relates to the field of oil pump detection. The testing device comprises an oil storage tank, an oil pump, a driving motor, a torque meter, an air pump and a flowmeter, wherein an oil pipe is fixedly connected between an oil outlet of the oil storage tank and an oil inlet of the oil pump, an oil pipe is fixedly connected between an oil outlet of the oil pump and an oil inlet of the flowmeter, an oil pipe is fixedly connected between an oil outlet of the flowmeter and an oil inlet of the oil storage tank, an overflow valve is connected between an outlet of the oil pump and the oil storage tank, and temperature sensors are fixedly inserted into the oil pipe, the pipe wall of the oil pipe, close to the oil inlet and the oil outlet of the. According to the invention, through a set of systematic detection schemes for volumetric efficiency, engine oil gas content and total efficiency of the engine oil pump, the problem that the volumetric efficiency requirement is only specified by the existing industrial standard JB/T8413-2010 technical requirement and the test method, and the engine oil gas content cannot be measured is solved.
Description
Technical Field
The invention relates to the technical field of engine oil pump detection, in particular to an engine oil pump detection device and a detection method.
Background
The engine oil pump of the engine is used for conveying the engine oil to each friction part of the engine, so that the engine oil circulates in the lubricating path, and each part of the engine is ensured to be well lubricated. In the running process of the vehicle, along with the vibration of a vehicle body and an engine, the engine oil vibrates in the oil pan and is mixed with air, so that a certain amount of air is contained in the engine oil. In the field of oil pump detection, JB/T8413.2-2010 proposes an oil pump volumetric efficiency test method, but in the test method, the performance test conditions of the oil pump are far from the running conditions of a whole vehicle, so that the influence of the air content of the oil on the volumetric efficiency cannot be evaluated, and a set of systematic detection schemes for the volumetric efficiency, the air content of the oil and the total efficiency of the engine oil pump are lacked.
The applicant finds that a Chinese patent discloses a system for detecting the oil pumping performance of an oil pump through retrieval when applying the invention, the application number of the system is 200710094624.4, the system mainly detects the output flow of the oil pump through a flowmeter, although the patent provides a systematic detection scheme for the output flow of the oil pump of an engine in the specification, the detection of the volumetric efficiency, the air content of the oil and the total efficiency of the oil pump is neglected, and the invention can well solve the problems.
Disclosure of Invention
Aiming at the defects of the existing engine oil pump detection technology, the invention provides an engine oil pump detection device and a detection method, which solve the problems of volume efficiency, engine oil gas content and total efficiency detection of an engine oil pump.
In order to achieve the purpose, the invention is realized by the following technical scheme: an engine oil pump detection device comprises an oil storage tank, an oil pump and a flowmeter, wherein an oil pipe is fixedly connected between an oil outlet of the oil storage tank and an oil inlet of the oil pump, an oil pipe is fixedly connected between an oil outlet of the oil pump and an oil inlet of the flowmeter, an oil pipe is fixedly connected between an oil outlet of the flowmeter and an oil inlet of the oil storage tank, an overflow valve is connected between an outlet of the oil pump and the oil storage tank, temperature sensors are fixedly inserted into the oil pipe wall close to the oil inlet and the oil outlet of the oil pump and the oil storage tank, a pressure sensor is fixedly inserted into one side of the oil pipe wall, which is located at the temperature sensor, a three-phase motor is installed at one side of the oil pump, which is far away from the oil storage tank, a torque meter is fixedly connected between a main shaft, the heating coil is fixedly arranged at the inner bottom of the oil storage tank, the heating coil is connected with a temperature control unit through a control circuit, an air pump is fixedly arranged on one side of the oil storage tank, and an air pipe is fixedly connected between an air outlet of the air pump and an air inlet of the oil storage tank.
Preferably, one side of the frequency converter is connected with a PC through a communication line.
Preferably, the flowmeter, the pressure sensor, the temperature sensor and the torque meter are all connected with a PC through communication lines.
Preferably, the flow meter is a mass flow meter.
Preferably, each section of the oil pipe is less than 1 meter in length.
Preferably, the main shaft of the three-phase motor and the transmission shaft of the oil pump are fixedly connected with the torque meter through a coupler.
A method for detecting the oil pump of engine includes such steps as controlling the frequency converter and PC software program, driving the oil pump by three-phase motor to simulate the real working environment of oil pump, measuring the performance of oil pump, pumping gas into oil by air pump at the inlet of oil collector, simulating the air filling process of oil by mixing it with air, and transmitting the data obtained by sensors such as torquemeter, mass flowmeter, pressure and temp back to computer via data line.
The specific calculation process is as follows:
ρ0: the initial density of the engine oil is,
ρ1: the density of the engine oil is measured,
Vpump: the theoretical displacement of the oil pump is measured,
npump: the rotating speed of the oil pump is controlled,
ηToutle: the efficiency of the volume is improved, and the volume,
ηAir: the gas content of the engine oil is high,
ηMechanical: overall efficiency.
The invention provides a device and a method for detecting an engine oil pump of an engine. The method has the following beneficial effects: the invention provides a set of oil pump detection scheme with more systematic perfection, the three-phase motor drives the motor oil pump to work by the software program control of the frequency converter and the PC, the most real oil pump working environment is simulated, therefore, the performance of the oil pump can be measured more accurately, the air pump at the inlet of the oil collector of the oil pump pumps air into the oil to simulate the process that the oil is mixed with air along with the vibration of the vehicle to fill the air, the data obtained by sensors such as a torquemeter, a mass flow meter, pressure, temperature and the like are transmitted to a computer through a data line, the complete data record is reserved, the experimental data result can be better analyzed, and then a set of more systematic data analysis and calculation method is adopted, therefore, the volumetric efficiency, the engine oil gas content and the total efficiency of the engine oil pump can be accurately measured, and the problem that the JB/T8413.2-2010 test method cannot measure the engine oil gas content is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention,
the device comprises an oil storage tank 1, an oil pump 2, an oil pump 3, a flowmeter 4, an oil pipe 5, a pressure sensor 6, a temperature sensor 7, a three-phase motor 8, a torque meter 9, a frequency converter 10, a heating coil 11, a temperature control unit 12, an air pump 13, an air pipe 14, a communication line 15, a PC 16, a coupler 17 and an overflow valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an engine oil pump detection apparatus, including an oil storage tank 1, an oil pump 2, and a flow meter 3, an oil pipe 4 is fixedly connected between an oil outlet of the oil storage tank 1 and an oil inlet of the oil pump 2, an oil pipe 4 is fixedly connected between an oil outlet of the oil pump 2 and an oil inlet of the flow meter 3, an oil pipe 4 is fixedly connected between an oil outlet of the flow meter 3 and an oil inlet of the oil storage tank 1, an overflow valve 17 is connected between an outlet of the oil pump 2 and the oil storage tank 1, temperature sensors 6 are respectively inserted and fixed on pipe walls of the oil pipe 4 near the oil inlet and the oil outlet of the oil pump 2 and in the oil storage tank 1, a pressure sensor 5 is inserted and fixed on one side of the pipe wall of the oil pipe 4 located at the temperature sensor 6, a three-phase motor, the electrode of the three-phase motor 7 is connected with a frequency converter 9 through a cable, a heating coil 10 is fixedly arranged at the inner bottom of the oil storage tank 1, the heating coil 10 is connected with a temperature control unit 11 through a control circuit, an air pump 12 is fixedly arranged on one side of the oil storage tank 1, and an air pipe 13 is fixedly connected between the air outlet of the air pump 12 and the air inlet of the oil storage tank 1.
The frequency converter 9 is connected with a PC (personal computer) 15 through a communication line 14, the frequency of the current input into the motor is adjusted through a program running on the PC, the adjustment of the rotating speed of the motor is finally achieved, and the rotating speed is adjusted more conveniently and rapidly through the program control of the PC 15. Flowmeter 3, pressure sensor 5, temperature sensor 6 and torquemeter 8 all are connected with PC 15 through communication line 14, and the data that each sensor obtained all transmits back the computer through the data line, and data record remains intact, and the analysis experiment data result that can be better is convenient for use in the future simultaneously. The flowmeter 3 is a mass flowmeter, the mass flowmeter can directly measure mass flow, the density is dynamically monitored, and compensation is not needed. Each section of the oil pipe 4 is smaller than 1 meter, and the on-way pressure loss is reduced, so that the experimental result is more accurate. All through 16 fixed connection of shaft coupling, compare in belt pulley connection, motor power loss is littleer between the main shaft of three phase motor 7 and 2's transmission shaft and the torquemeter 8, and the structure is more compact, and is more reliable, durable.
When the experimental platform is used for detection, a main shaft of a three-phase motor 7, a torque meter 8 and a transmission shaft of an oil pump 2 are fixedly connected together through a coupling 16, after a power supply is switched on, a software program operated by a PC (personal computer) 15 controls a frequency converter 9 to work through a communication line 14, finally, the rotating speed control of the three-phase motor 7 is realized, the real oil pump working environment during automobile driving is simulated, the oil pump 2 pumps the oil in an oil storage tank 1 to a flowmeter 3 through an oil pipe 4, then the oil is returned to the oil storage tank 1 through an outlet of the flowmeter 3 to circulate in a reciprocating manner, a heating coil 10 is arranged in the bottom of the oil storage tank 1, the heating coil 10 is controlled through a temperature control unit 11, the constant temperature adjustment of the oil is realized, the more real oil pump working environment is further simulated, an air pump 12 positioned at the lower part of the oil storage tank, the flowmeter 3, the pressure sensor 5, the temperature sensor 6 and the torquemeter 8 transmit the obtained data back to the PC 15, complete data records are reserved, experimental data results can be analyzed better, and volumetric efficiency, engine oil gas content and total efficiency of the engine oil pump can be calculated by a set of system data analyzing and calculating methods.
The specific calculation process is as follows:
ρ0: the initial density of the engine oil is,
ρ1: the density of the engine oil is measured,
Vpump: the theoretical displacement of the oil pump is measured,
npump: the rotating speed of the oil pump is controlled,
ηToutle: the efficiency of the volume is improved, and the volume,
ηAir: the gas content of the engine oil is high,
ηMechanical: overall efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an engine oil pump detection device, includes batch oil tank (1), oil pump (2) and flowmeter (3), its characterized in that: an oil pipe (4) is fixedly connected between an oil outlet of the oil storage tank (1) and an oil inlet of the oil pump (2), the oil pipe (4) is fixedly connected between an oil outlet of the oil pump (2) and an oil inlet of the flowmeter (3), the oil pipe (4) is fixedly connected between an oil outlet of the flowmeter (3) and an oil inlet of the oil storage tank (1), an overflow valve (17) is connected between an outlet of the oil pump (2) and the oil storage tank (1), temperature sensors (6) are fixedly inserted into the oil pipe (4) and the oil storage tank (1), a pressure sensor (5) is fixedly inserted into one side, close to the oil outlet of the oil pump (2), of the oil pipe (4), one side, far away from the oil storage tank (1), of the oil pump (2) is provided with a three-phase motor (7), and a torque meter is fixedly connected between a main shaft of the three-phase motor (7) and a transmission shaft of (8) The electrode of three-phase motor (7) has converter (9) through cable junction, the fixed heating coil (10) that is provided with of interior bottom of batch oil tank (1), heating coil (10) are connected with temperature control unit (11) through control scheme, the fixed air pump (12) that is provided with in one side of batch oil tank (1), fixedly connected with trachea (13) between the gas outlet of air pump (12) and the air inlet of batch oil tank (1).
2. The engine oil pump detection device according to claim 1, characterized in that: the frequency converter (9) is connected with a PC (15) through a communication line (14).
3. The engine oil pump detection device according to claim 1, characterized in that: the flowmeter (3), the pressure sensor (5), the temperature sensor (6) and the torquemeter (8) are all connected with a PC (15) through communication lines (14).
4. The engine oil pump detection device according to claim 1, characterized in that: the flowmeter (3) is a mass flowmeter.
5. The engine oil pump detection device according to claim 1, characterized in that: the length of each section of the oil pipe (4) is less than 1 meter.
6. The engine oil pump detection device according to claim 1, characterized in that: the main shaft of the three-phase motor (7) and the transmission shaft of the oil pump (2) are fixedly connected with the torque meter (8) through a coupling (16).
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| CN201910263649.5A CN109944790B (en) | 2019-04-02 | 2019-04-02 | Engine oil pump detection device and detection method |
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| CN201910263649.5A CN109944790B (en) | 2019-04-02 | 2019-04-02 | Engine oil pump detection device and detection method |
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| CN109944790A CN109944790A (en) | 2019-06-28 |
| CN109944790B true CN109944790B (en) | 2020-05-12 |
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| CN101469699A (en) * | 2007-12-25 | 2009-07-01 | 上海华普发动机有限公司 | System for detecting oil pumping performance of engine oil pump |
| CN201891592U (en) * | 2010-12-10 | 2011-07-06 | 湖南机油泵股份有限公司 | Engine oil pump detection system |
| CN203594590U (en) * | 2013-10-25 | 2014-05-14 | 中国振华集团久达机械厂 | Detection device of oil pump |
| CN106151006A (en) * | 2016-08-29 | 2016-11-23 | 浙江华天机械有限公司 | A kind of engine oil pump test platform |
| CN106640617A (en) * | 2016-11-16 | 2017-05-10 | 中国北方发动机研究所(天津) | Steering pump test device for engine test bed |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8646313B2 (en) * | 2009-06-22 | 2014-02-11 | Ford Global Technologies, Llc | System and method to provide lubrication for a plug-in hybrid |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469699A (en) * | 2007-12-25 | 2009-07-01 | 上海华普发动机有限公司 | System for detecting oil pumping performance of engine oil pump |
| CN201209532Y (en) * | 2008-04-28 | 2009-03-18 | 湖南机油泵股份有限公司 | Step pressure regulating type lubricating oil pump testing bench |
| CN201891592U (en) * | 2010-12-10 | 2011-07-06 | 湖南机油泵股份有限公司 | Engine oil pump detection system |
| CN203594590U (en) * | 2013-10-25 | 2014-05-14 | 中国振华集团久达机械厂 | Detection device of oil pump |
| CN106151006A (en) * | 2016-08-29 | 2016-11-23 | 浙江华天机械有限公司 | A kind of engine oil pump test platform |
| CN106640617A (en) * | 2016-11-16 | 2017-05-10 | 中国北方发动机研究所(天津) | Steering pump test device for engine test bed |
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