CN109141703A - The device and method of engine torque measurement under a kind of loading condition - Google Patents
The device and method of engine torque measurement under a kind of loading condition Download PDFInfo
- Publication number
- CN109141703A CN109141703A CN201810989287.3A CN201810989287A CN109141703A CN 109141703 A CN109141703 A CN 109141703A CN 201810989287 A CN201810989287 A CN 201810989287A CN 109141703 A CN109141703 A CN 109141703A
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- China
- Prior art keywords
- speed probe
- fluted disc
- flywheel
- shaft coupling
- loading condition
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/105—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving inductive means
-
- 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
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/109—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving measuring phase difference of two signals or pulse trains
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Testing Of Engines (AREA)
Abstract
The present invention provides a kind of devices of engine torque measurement under loading condition, including bell housing, flywheel, shaft coupling, the flywheel and shaft coupling are mounted in bell housing, pass through axis connection between the flywheel and shaft coupling, the flywheel other side is connected with engine crankshaft, the shaft coupling other side is connected with system of vehicle transmission case, the first fluted disc and the second fluted disc are separately installed on the flywheel and shaft coupling, first speed probe and the second speed probe are installed on the bell housing, the tooth top of probe difference face the first fluted disc and the second fluted disc of first speed probe and the second speed probe.The invention has the advantages that: installations to occupy little space, easy to use succinct, low in cost；Speed probe technical maturity is high, and the speed waveform precision of acquisition is high and signal stabilization, sensor are not directly contacted with power output shaft, vibrated that minimum, the torque measuring method and device measurement accuracy height, good reliability are influenced with use environment.
Description
Technical field
The invention belongs to vehicle power technical fields, more particularly, to a kind of dress of engine torque measurement under loading condition
It sets and method.
Background technique
Vehicle is pursued dynamic property, economy, emission performance and the complex control system of vehicle is required in loading condition
The lower operating condition for obtaining engine in real time.Vehicle can obtain engine speed by speed probe in real time at present, still
Motor torque cannot be measured directly, generally by engine rig test acquisition Engine Universal Characteristics, then in conjunction with starting
Machine revolving speed and throttle information judge engine operating condition.
Revolving speed, torque and the power of engine are generally measured on threst stand by dynamometer machine.In reality
Under the loading condition of border, an important parameter of the motor torque as characterization engine operating condition measures acquisition to it and is required to
Real-time measurement and precision are high, highly reliable on vehicle.Under loading condition, since space limits, motor torque is not easy
It is measured by output shaft and torque measurement instrument or connect with dynamometer machine.It is turned round under loading condition using patch foil gauge measurement
The method of square is needed by strain gauge adhesion on power output shaft, stringent to paste operation code requirement, inappropriate stickup meeting
The problems such as causing zero the floaing of measurement, creep；The signal wire that foil gauge is drawn is very thin, foil gauge and signal wire and power output shaft one
Superhigh speed rotates and vibration is violent, is easy to disconnect；Resistance value is unstable after foil gauge dampness, measurement inaccuracy, and the reality of vehicle
Border use environment is severe, temperature humidity changes greatly, therefore the precision of foil gauge measurement torque is low, poor reliability.It is strained by patch
The torque measurement mode precision of piece is low, poor reliability, fails effectively to be widely applied under practical loading condition.
Summary of the invention
In view of this, the present invention is directed to propose under a kind of loading condition engine torque measurement device and method, with solution
The problem of certainly motor torque can not obtain in real time under loading condition.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The device of engine torque measurement under a kind of loading condition, including bell housing, flywheel, shaft coupling, the flywheel and
Shaft coupling is mounted in bell housing, and by axis connection between the flywheel and shaft coupling, the flywheel other side, which is connected with, starts
Machine crankshaft, the shaft coupling other side are connected with system of vehicle transmission case, the first fluted disc are separately installed on the flywheel and shaft coupling
With the second fluted disc, the first speed probe and the second speed probe, first revolution speed sensing are installed on the bell housing
The tooth top of probe difference face the first fluted disc and the second fluted disc of device and the second speed probe.
Further, the probe of first speed probe and the second speed probe is located at the first fluted disc and
The surface of two fluted discs.
Further, first speed probe and the second speed probe are magnetoelectric sensor.
Further, first speed probe and the second speed probe are hall sensor.
Further, 120 teeth are evenly distributed on first fluted disc and the second fluted disc, and remove one of them
Tooth.
Present invention also provides another embodiment, a kind of method of engine torque measurement under loading condition, including with
Lower step:
A. when the vehicle is running, output torque, axis twist under torque, and the first fluted disc and the second fluted disc occur
Dislocation, so that phase difference t occur in the first speed probe and the second speed probe waveform；
B. it is calculated by the following formula out the output torque T of engine,
Wherein, n indicates engine speed；Indicate the torsional angle of axis, i.e., the dislocation angle of two fluted discs；The length of l expression axis
Degree；IpIndicate the polar moment of inertia of shaft section；The shear modulus of G expression shaft material.
Compared with the existing technology, under loading condition of the present invention engine torque measurement device and method have with
Lower advantage:
The device of engine torque measurement is in existing engine flywheel disk and shaft coupling under loading condition of the present invention
Fluted disc to be installed on device, two speed probes are installed on existing bell housing, installation occupies little space, and it is easy to use succinct,
It is low in cost；Speed probe technical maturity is high, and the speed waveform precision of acquisition is high and signal stabilization, sensor are defeated with power
Shaft is not directly contacted with, vibrated that minimum, the torque measuring method and device measurement accuracy height, reliability are influenced with use environment
It is good；Engine output torque can be accurately obtained using the waveform phase difference of two speed probes, is solved under loading condition
The problem of engine operating condition can not obtain in real time.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the apparatus structure schematic diagram of engine torque measurement under loading condition described in the embodiment of the present invention；
Fig. 2 is the waveform of two speed probes and its schematic diagram of phase difference when motor torque exports.
Description of symbols:
1- flywheel；2- shaft coupling；3- system of vehicle transmission case；4- engine crankshaft；5- bell housing；The first fluted disc of 6-；7- second
Fluted disc；8- axis；The first speed probe of 9-；The second speed probe of 10-.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, under a kind of loading condition engine torque measurement device, including bell housing 5, flywheel 1, shaft coupling
2, the flywheel 1 and shaft coupling 2 are mounted in bell housing 5, are connected between the flywheel 1 and shaft coupling 2 by axis 8, described to fly
It takes turns 1 other side and is connected with engine crankshaft 4,2 other side of shaft coupling is connected with system of vehicle transmission case 3, the flywheel 1 and shaft coupling
It is separately installed with the first fluted disc 6 and the second fluted disc 7 on device 2, the first speed probe 9 and second is installed on the bell housing 5
Probe difference the first fluted disc of face 6 of speed probe 10, first speed probe 9 and the second speed probe 10 and the
The tooth top of two fluted discs 7.
The probe of first speed probe 9 and the second speed probe 10 is located at the first fluted disc 6 and the second tooth
The surface of disk 7.
First speed probe 9 and the second speed probe 10 are magnetoelectric sensor.
First speed probe 9 and the second speed probe 10 are hall sensor.
120 teeth are evenly distributed on first fluted disc 6 and the second fluted disc 7, and remove one of tooth, this is
In order to be detected respectively to the first fluted disc 6 and the second fluted disc 7 using the first speed probe 9 and the second speed probe 10
When, when often going at hypodontia, indicate that fluted disc has turned one week, when can thus record two fluted discs and misplacing, first
The phase difference that speed probe 9 and the second speed probe 10 generate.
Present invention also provides another embodiment, a kind of method of engine torque measurement under loading condition, including with
Lower step:
A. when the vehicle is running, output torque, axis 8 twist under torque, the first fluted disc 6 and the second fluted disc 7
It misplaces, so that phase difference t occur in the first speed probe 9 and 10 waveform of the second speed probe, as shown in Figure 2；
B. it is calculated by the following formula out the output torque T of engine, the first speed probe 9 obtains engine speed,
Solves the problems, such as engine torque measurement under loading condition, to obtain the real time execution operating condition of vehicle motor.
Wherein, n indicates engine speed；Indicate the torsional angle of axis 8, i.e., the dislocation angle of two fluted discs；The length of l expression axis 8
Degree；IpIndicate the polar moment of inertia in 8 section of axis；The shear modulus of G expression 8 material of axis.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. the device of engine torque measurement under a kind of loading condition, it is characterised in that: including bell housing, flywheel, shaft coupling, institute
It states flywheel and shaft coupling is mounted in bell housing, by axis connection between the flywheel and shaft coupling, the flywheel other side connects
It is connected to engine crankshaft, the shaft coupling other side is connected with system of vehicle transmission case, is separately installed on the flywheel and shaft coupling
First fluted disc and the second fluted disc, are equipped with the first speed probe and the second speed probe on the bell housing, and described first
The tooth top of probe difference face the first fluted disc and the second fluted disc of speed probe and the second speed probe.
2. the device of engine torque measurement under a kind of loading condition according to claim 1, it is characterised in that: described
The probe of one speed probe and the second speed probe is located at the surface of the first fluted disc and the second fluted disc.
3. the device of engine torque measurement under a kind of loading condition according to claim 1, it is characterised in that: described
One speed probe and the second speed probe are magnetoelectric sensor.
4. the device of engine torque measurement under a kind of loading condition according to claim 1, it is characterised in that: described
One speed probe and the second speed probe are hall sensor.
5. the device of engine torque measurement under a kind of loading condition according to claim 1, it is characterised in that: described
It is evenly distributed with 120 teeth on one fluted disc and the second fluted disc, and removes one of tooth.
6. the measurement method of the device of engine torque measurement under a kind of loading condition as described in any in claim 1-5, packet
Include following steps:
A. when the vehicle is running, output torque, axis twist under torque, and mistake occur in the first fluted disc and the second fluted disc
Position, so that there is phase difference t in the first speed probe and the second speed probe waveform:
B. it is calculated by the following formula out the output torque T of engine,
Wherein, n indicates engine speed；Indicate the torsional angle of axis, i.e., the dislocation angle of two fluted discs；The length of l expression axis；Ip
Indicate the polar moment of inertia of shaft section；The shear modulus of G expression shaft material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989287.3A CN109141703A (en) | 2018-08-28 | 2018-08-28 | The device and method of engine torque measurement under a kind of loading condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989287.3A CN109141703A (en) | 2018-08-28 | 2018-08-28 | The device and method of engine torque measurement under a kind of loading condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109141703A true CN109141703A (en) | 2019-01-04 |
Family
ID=64828672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810989287.3A Pending CN109141703A (en) | 2018-08-28 | 2018-08-28 | The device and method of engine torque measurement under a kind of loading condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141703A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576386A (en) * | 2020-11-02 | 2021-03-30 | 潍柴动力股份有限公司 | Control method, device and system for improving consistency of engine |
| CN114526156A (en) * | 2022-01-18 | 2022-05-24 | 东风汽车集团股份有限公司 | Dual mass flywheel device, vehicle, and control method for vehicle |
| US20230139667A1 (en) * | 2021-10-29 | 2023-05-04 | Caterpillar Inc. | Inferred Engine Cylinder Pressure System and Method |
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| CN101458063A (en) * | 2009-01-06 | 2009-06-17 | 武汉理工大学 | Steering sensor capable of simultaneously measuring steering angle and torque |
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| 吴杰清: "《工程检测技术》", 31 May 1991, 大连海运学院出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576386A (en) * | 2020-11-02 | 2021-03-30 | 潍柴动力股份有限公司 | Control method, device and system for improving consistency of engine |
| CN112576386B (en) * | 2020-11-02 | 2022-09-23 | 潍柴动力股份有限公司 | Control method, device and system for improving consistency of engine |
| US20230139667A1 (en) * | 2021-10-29 | 2023-05-04 | Caterpillar Inc. | Inferred Engine Cylinder Pressure System and Method |
| CN114526156A (en) * | 2022-01-18 | 2022-05-24 | 东风汽车集团股份有限公司 | Dual mass flywheel device, vehicle, and control method for vehicle |
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Application publication date: 20190104 |