CN112284586B - An engine bench dynamometer system - Google Patents
An engine bench dynamometer system Download PDFInfo
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- CN112284586B CN112284586B CN202010979582.8A CN202010979582A CN112284586B CN 112284586 B CN112284586 B CN 112284586B CN 202010979582 A CN202010979582 A CN 202010979582A CN 112284586 B CN112284586 B CN 112284586B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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Abstract
本发明属于发动机技术领域，公开了一种发动机台架测功系统，其特征在于，包括：测功机、测功机供电模块、发动机控制单元电源、发动机控制单元、AC‑DC变换器以及第一继电器；所述测功机供电模块与所述测功机相连，所述测功机供电模块与所述发动机控制单元电源相连；所述发动机控制单元与所述发动机控制单元电源相连；所述AC‑DC变换器与所述测功机供电模块相连，所述AC‑DC变换器与所述第一继电器的负载线圈相连；所述第一继电器的接线端子连接在所述发动机控制单元电源和所述发动机控制单元之间。本发明提供的发动机台架测功系统能够实现测功机供电故障下的高效响应，及时停止发动机工作，降低故障损伤。
The invention belongs to the technical field of engines, and discloses an engine bench dynamometer system, which is characterized by comprising: a dynamometer, a dynamometer power supply module, an engine control unit power supply, an engine control unit, an AC-DC converter, and a dynamometer. a relay; the dynamometer power supply module is connected to the dynamometer, the dynamometer power supply module is connected to the power supply of the engine control unit; the engine control unit is connected to the power supply of the engine control unit; the The AC-DC converter is connected to the power supply module of the dynamometer, and the AC-DC converter is connected to the load coil of the first relay; the connection terminal of the first relay is connected to the power supply of the engine control unit and the load coil of the first relay. between the engine control units. The engine bench dynamometer system provided by the invention can realize the efficient response under the power supply failure of the dynamometer, stop the engine work in time, and reduce the failure damage.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine bench power measuring system.
Background
In the engine bench test, the engine control is realized by controlling the opening of an accelerator or a throttle valve through an engine controller ECU; when power supply is interrupted or the dynamometer is suddenly powered off due to abnormal conditions such as system breakdown, emergency stop and the like, the transmission shaft of the dynamometer is locked by the dynamometer in order to prevent the engine from flying, the engine is still in a working state, and the transmission shaft can bear large torque output of the engine, so that the transmission shaft can be broken, other equipment connected to the transmission shaft can be damaged, and the test engine can be damaged. In the prior art, the engine is stopped by manually powering off or detecting and analyzing a work condition signal of a dynamometer by an engine controller ECU and then controlling an engine throttle or a throttle valve, so that the response aging is slow and the safety risk is high.
Disclosure of Invention
The invention provides an engine bench dynamometer system, which solves the technical problem that safety measure response time is slow when a dynamometer is abnormally powered off in an engine bench test in the prior art.
In order to solve the above technical problem, the present invention provides an engine bench power measuring system, including: the system comprises a dynamometer, a dynamometer power supply module, an engine control unit power supply, an engine control unit, an AC-DC converter and a first relay;
the dynamometer power supply module is connected with the dynamometer, and the dynamometer power supply module is connected with the engine control unit power supply;
the engine control unit is connected with the power supply of the engine control unit;
the AC-DC converter is connected with the dynamometer power supply module and is connected with a load coil of the first relay;
the wiring terminal of the first relay is connected between the engine control unit power supply and the engine control unit.
Further, the engine bench dynamometer system further includes: a second relay and a first emergency stop switch;
the load coil of the second relay is connected with the power supply of the engine control unit through the first emergency stop switch;
and the wiring terminal of the second relay and the wiring terminal of the first relay are connected in series between the power supply of the engine control unit and the engine control unit.
Further, a second emergency stop switch is connected between the dynamometer power supply module and the engine control unit power supply.
Further, the engine bench dynamometer system further includes: a third relay and a two-way emergency stop switch;
the load coil of the third relay and the dynamometer power supply module are connected with the engine control unit power supply through the two-way emergency stop switch;
and the wiring terminal of the third relay and the wiring terminal of the first relay are connected in series between the power supply of the engine control unit and the engine control unit.
Further, the output voltage of the engine control unit power supply is 12V.
Further, the power supply voltage of the dynamometer power supply module is 220V.
Further, the output voltage of the AC-DC converter is 12V.
Further, a first end of the second relay is connected with the positive electrode of the power supply of the engine control unit through the first emergency stop switch;
and the second end of the second relay is grounded.
Further, the first end of the third relay is connected with the positive pole of the power supply of the engine control unit through the two-way stop switch;
and the second end of the third relay is grounded.
Further, the negative electrode of the engine control unit power supply is grounded.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the engine rack power measuring system provided by the embodiment of the application establishes a complete automatic monitoring and efficient response fault protection mechanism based on the dynamometer, a dynamometer power supply module, an engine control unit power supply and an engine control unit matched with an AC-DC converter and a first relay; specifically, the dynamometer power supply module is connected with the dynamometer, the dynamometer power supply module is connected with the engine control unit power supply, and the engine control unit is connected with the engine control unit power supply, so that a power supply structure of a control structure of an engine control unit and the dynamometer power supply module is established; further, the AC-DC converter is connected with the dynamometer power supply module, the AC-DC converter is connected with a load coil of the first relay, a wiring terminal of the first relay is connected between the engine control unit power supply and the engine control unit, so that the dynamometer power supply condition can be sensed, once the power supply is interrupted, the first relay automatically disconnects the power supply circuit of the engine control unit, the engine is enabled to stall to stop rapidly, and the response time efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of an engine bench dynamometer system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an engine bench dynamometer system according to a second embodiment of the present invention.
Detailed Description
The embodiment of the application provides an engine bench dynamometer system, and solves the technical problem that safety measure response timeliness is slow when a dynamometer is abnormally powered off in an engine bench test in the prior art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Example one
Referring to FIG. 1, an engine mount dynamometer system includes: the dynamometer 2, the dynamometer power supply module 1, the engine control unit power supply 5, the engine control unit 4, the AC-DC converter 7 and the first relay K1.
Specifically, the dynamometer power supply module 1 is connected with the dynamometer 2, the dynamometer power supply module 1 is connected with the engine control unit power supply 5, and the engine control unit is connected with the engine control unit power supply 5, so that power supply connection based on the unified control structure of the engine control unit power supply 5 is established.
The AC-DC converter 7 is connected with the dynamometer power supply module 1 and used for acquiring alternating current transmitted to the dynamometer 2 in real time, the AC-DC converter 7 is connected with a load coil of the first relay K1 and used for converting the alternating current into direct current and transmitting the direct current to the load coil, and a connecting terminal is always kept to be connected and electrically connected.
The connection terminal of the first relay K1 is connected between the engine control unit power supply 5 and the engine control unit 4, so that the on/off of the power supply structure of the engine control unit 4 is controlled by the first relay K1.
That is, the power supply state of the dynamometer 2 is tracked through the AC-DC converter 7 to control the on-off state of the first relay K1, so as to control the start and stop of the engine 3; in the whole process, only a simple circuit tracking structure is adopted, efficient and reliable automatic corresponding control is realized, and modes of terminal control such as accelerator or throttle opening and the like are not required to be executed after analysis and judgment of an engine ECU in the prior art, so that the response timeliness is greatly improved.
Further, the engine bench dynamometer system further includes: a second relay K2 and a first emergency stop switch; the load coil of the second relay K2 is connected with the engine control unit power supply 5 through the first emergency stop switch; the connection terminal of the second relay K2 and the connection terminal of the first relay K1 are connected in series between the engine control unit power supply 5 and the engine control unit 4; thereby forming two engine start-stop control structures on the power supply circuit of the engine control unit 4; that is, the automatic tracking control structure based on the first relay K1 and the active stop control structure based on the second relay K2 and the first emergency stop switch can sufficiently improve the reliability and effectiveness of the engine stop control.
Of course, a second emergency stop switch may be provided between the dynamometer power module 1 and the engine control unit power supply 5 for control of power delivery.
Alternatively, the engine bench dynamometer system further includes: a third relay and a two-way emergency stop switch 6; the load coil of the third relay and the dynamometer power supply module 1 are both connected with the engine control unit power supply 5 through the two-way emergency stop switch 6; the connection terminal of the third relay and the connection terminal of the first relay K1 are connected in series between the engine control unit power supply 5 and the engine control unit 4.
That is to say, replace second relay K2 with the third relay to replace first scram switch with double-circuit scram switch 6, realize double-circuit initiative power supply start-stop control, efficiency is higher.
In this embodiment, the output voltage of the engine control unit power supply 5 is 12V; the power supply voltage of the dynamometer power supply module 1 is 220V; the output voltage of the AC-DC converter 7 is 12V.
A first end of the second relay K2 is connected with the positive pole of the engine control unit power supply 5 through the first emergency stop switch; the second end of the second relay K2 is grounded.
Or the first end of the third relay is connected with the positive pole of the engine control unit power supply 5 through the two-way stop switch 6; and the second end of the third relay is grounded.
Correspondingly, the negative pole of the power supply of the engine control unit is grounded.
Example two
Referring to fig. 2, a field control PC and a fourth relay K3 are added on the basis of the first embodiment, so that a control measurement scheme based on monitoring of each parameter in a test through the PC is realized.
Specifically, the field control PC is connected in communication with the dynamometer 2 and the engine control unit 4 through CAN buses, respectively, the fourth relay K3 is connected in series between the positive electrode of the engine control unit power supply 5 and the engine control unit 4, and the fourth relay K3 is connected to the field control PC.
The field control PC is used as an upper computer, various process parameters such as the rotating speed of the engine, the water temperature and the temperature of the dynamometer are obtained through running software, threshold values of the parameters and logic program presetting are set on the software, opening and closing of the fourth relay K3 are controlled through real-time monitoring and comparison, and starting and stopping of the engine are controlled, so that the engine is protected.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the engine rack power measuring system provided by the embodiment of the application establishes a complete automatic monitoring and efficient response fault protection mechanism based on the dynamometer, a dynamometer power supply module, an engine control unit power supply and an engine control unit matched with an AC-DC converter and a first relay; specifically, the dynamometer power supply module is connected with the dynamometer, the dynamometer power supply module is connected with the engine control unit power supply, and the engine control unit is connected with the engine control unit power supply, so that a power supply structure of a control structure of an engine control unit and the dynamometer power supply module is established; further, the AC-DC converter is connected with the dynamometer power supply module, the AC-DC converter is connected with a load coil of the first relay, a wiring terminal of the first relay is connected between the engine control unit power supply and the engine control unit, so that the dynamometer power supply condition can be sensed, once the power supply is interrupted, the first relay automatically disconnects the power supply circuit of the engine control unit, the engine is enabled to stall to stop rapidly, and the response time efficiency is greatly improved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. An engine bench dynamometer system, comprising: the system comprises a dynamometer, a dynamometer power supply module, an engine control unit power supply, an engine control unit, an AC-DC converter and a first relay;
the dynamometer power supply module is connected with the dynamometer, and the dynamometer power supply module is connected with the engine control unit power supply;
the engine control unit is connected with the power supply of the engine control unit;
the AC-DC converter is connected with the dynamometer power supply module and is connected with a load coil of the first relay;
the wiring terminal of the first relay is connected between the power supply of the engine control unit and the engine control unit;
the engine bench dynamometer system further includes: a third relay and a two-way emergency stop switch;
the load coil of the third relay and the dynamometer power supply module are connected with the engine control unit power supply through the two-way emergency stop switch;
the wiring terminal of the third relay and the wiring terminal of the first relay are connected in series between the engine control unit power supply and the engine control unit;
the first end of the third relay is connected with the anode of the power supply of the engine control unit through the two-way quick-stop switch;
and the second end of the third relay is grounded.
2. The engine stand dynamometer system of claim 1, wherein a second scram switch is coupled between the dynamometer power module and the engine control unit power supply.
3. The engine mount dynamometer system of claim 1, wherein the output voltage of the engine control unit power supply is 12V.
4. The engine bench dynamometer system of claim 3, wherein the dynamometer power module has a supply voltage of 220V.
5. The engine mount dynamometer system of claim 4, wherein the AC-DC converter has an output voltage of 12V.
6. The engine mount dynamometer system of claim 1, wherein a negative terminal of the engine control unit power supply is grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010979582.8A CN112284586B (en) | 2020-09-17 | 2020-09-17 | An engine bench dynamometer system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010979582.8A CN112284586B (en) | 2020-09-17 | 2020-09-17 | An engine bench dynamometer system |
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| CN112284586A CN112284586A (en) | 2021-01-29 |
| CN112284586B true CN112284586B (en) | 2021-10-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323378B (en) * | 2021-12-30 | 2024-01-23 | 中国科学院工程热物理研究所 | Electric power dynamometer system and electric power dynamometer method |
| CN114415022A (en) * | 2022-02-25 | 2022-04-29 | 杭州电子科技大学 | Multifunctional portable engine fault detector |
| CN115112225A (en) * | 2022-05-25 | 2022-09-27 | 中国第一汽车股份有限公司 | A dynamometer vibration detection structure and control method |
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| FR3070957A1 (en) * | 2017-09-13 | 2019-03-15 | Jtekt Europe | METHOD FOR ESTIMATING A FRICTION VALUE |
| CN209342383U (en) * | 2018-11-27 | 2019-09-03 | 河南德力新能源汽车有限公司 | A kind of synthesis rack test macro of pure electric automobile power assembly |
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2020
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235781A (en) * | 2007-12-29 | 2008-08-06 | 奇瑞汽车有限公司 | Engine pedestal control system possessing idle speed shutdown /start-up function |
| CN203719914U (en) * | 2014-01-21 | 2014-07-16 | 北京汽车新能源汽车有限公司 | Power assembly test bench for extended range electric vehicle |
| CN203824754U (en) * | 2014-03-25 | 2014-09-10 | 潍柴动力股份有限公司 | Engine anti-speeding test system |
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