CN111456862A - Method and device for avoiding resonance of torsion system - Google Patents
Method and device for avoiding resonance of torsion system Download PDFInfo
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- CN111456862A CN111456862A CN201910060243.7A CN201910060243A CN111456862A CN 111456862 A CN111456862 A CN 111456862A CN 201910060243 A CN201910060243 A CN 201910060243A CN 111456862 A CN111456862 A CN 111456862A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/04—Frequency effects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
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- Chemical & Material Sciences (AREA)
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides a method and a device for avoiding resonance of a torsion system, which are characterized in that based on an engine cylinder stopping instruction, a resonance rotating speed corresponding to the cylinder stopping instruction is obtained; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a device for avoiding resonance of a torsion system.
Background
In the current automobile industry, energy conservation and emission reduction become main technical guides, and the cylinder deactivation technology is one of technical means for realizing energy conservation and emission reduction, can effectively reduce pumping loss and improve heat efficiency, and is accepted by mainstream vehicle enterprises and widely applied.
However, when the excitation frequency is lowered due to the cylinder deactivation operation of the engine, and the excitation frequency coincides with the natural frequency of a torsion system of the automobile, the system may resonate, thereby causing NVH problems, affecting the comfort of the vehicle, and in severe cases, causing reliability problems. Therefore, how to simultaneously ensure the comfort and the reliability of the vehicle when the engine is in cylinder deactivation operation is a problem which needs to be solved urgently in the industry.
Disclosure of Invention
In view of the above, the present invention is directed to a method and a device for avoiding resonance of a torsional system, so as to solve the problem that how to ensure comfort and reliability of a vehicle during an engine cylinder deactivation operation is an urgent need in the industry.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of avoiding torsional system resonance, the method comprising:
acquiring a resonance rotating speed corresponding to an engine cylinder deactivation instruction based on the engine cylinder deactivation instruction;
and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
Further, the obtaining of the resonance rotation speed corresponding to the cylinder deactivation command based on the engine cylinder deactivation command includes:
calculating according to the sweep frequency rotating speed corresponding to the cylinder deactivation command to obtain a resonance point;
and acquiring the resonance rotating speed corresponding to the cylinder deactivation command according to the resonance point calculation.
Further, before the step of obtaining the resonant rotation speed corresponding to the cylinder deactivation command based on the engine cylinder deactivation command, the method further includes:
and receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the cylinder deactivation command.
Further, the receiving the sweep rotation speed corresponding to the cylinder deactivation command returned by the rotation speed sensor includes:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction;
and receiving sweep frequency rotating speeds which are respectively corresponding to the full-cylinder operation instruction, the half-cylinder operation instruction and the cylinder-breaking operation instruction and are returned by the rotating speed sensor.
Further, the rotating speed sensor is a rotating speed sensor and/or an external sensor of the vehicle.
Compared with the prior art, the method for avoiding the resonance of the torsion system has the following advantages:
the method for avoiding the resonance of the torsion system comprises the steps of obtaining a resonance rotating speed corresponding to a cylinder stopping instruction based on the cylinder stopping instruction of an engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
Another objective of the present invention is to provide a device for avoiding the resonance of the torsion system, so as to solve the problem that how to ensure the comfort and reliability of the vehicle when the engine is in the cylinder deactivation operation.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an apparatus for avoiding torsional system resonance, the apparatus comprising:
the calculation module is used for acquiring a resonance rotating speed corresponding to an engine cylinder deactivation instruction based on the engine cylinder deactivation instruction;
and the resonance avoiding module is used for controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
Further, the calculation module includes:
the first calculation submodule is used for calculating according to the sweep frequency rotating speed corresponding to the cylinder deactivation command and acquiring a resonance point;
and the second calculation submodule is used for acquiring the resonance rotating speed corresponding to the cylinder deactivation command according to the resonance point calculation.
Further, before the first computing submodule, the method further includes:
and the receiving module is used for receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the cylinder deactivation instruction.
Further, the receiving module includes:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction;
and the receiving submodule is used for receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the full-cylinder operating instruction, the half-cylinder operating instruction and the cylinder-breaking operating instruction respectively.
Further, the rotating speed sensor is a rotating speed sensor and/or an external sensor of the vehicle.
Compared with the prior art, the device for avoiding the resonance of the torsion system has the following advantages:
the device for avoiding the resonance of the torsion system is characterized in that the resonance rotating speed corresponding to the cylinder stopping instruction is obtained based on the cylinder stopping instruction of the engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
The device for avoiding the resonance of the torsional system and the method for avoiding the resonance of the torsional system have the same advantages compared with the prior art, and are not described herein again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart illustrating steps of a method for avoiding resonance in a torsional system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for calculating a resonance point of a torsional system according to another embodiment of the present invention.
FIG. 3 is a schematic diagram of an engine system illustrating another method for avoiding torsional system resonance in accordance with an embodiment of the present invention.
Fig. 4 is a frequency diagram corresponding to each frequency in another method for avoiding resonance in a torsional system according to an embodiment of the present invention.
Fig. 5 is a graph of the results of a 4-cylinder machine frequency sweep of another method for avoiding torsional system resonance according to an embodiment of the present invention.
Fig. 6 is a block diagram of an apparatus for avoiding resonance in a torsional system according to an embodiment of the present invention.
Fig. 7 is a block diagram of another apparatus for avoiding resonance in a torsional system according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a flow chart of steps of a method for avoiding resonance of a torsional system according to an embodiment of the present invention may include:
In the embodiment of the invention, in the test process of the engine of the automobile or before the engine is used, in order to avoid the NVH problem, the resonance point of the automobile running system needs to be detected, so that the engine can avoid the resonance point and the corresponding resonance speed. Therefore, the resonance point frequency avoiding request can be sent by an ECU (Electronic Control Unit) before the automobile engine is tested or used. The resonance of the torsion system is caused by the reduction of the excitation order when the engine is in cylinder deactivation operation, each cylinder deactivation operation state of the engine corresponds to one excitation order, and the resonance point of the engine corresponds to different rotating speeds of the excitation orders in different cylinder deactivation operation states, so that the engine is respectively in a plurality of cylinder deactivation operation states when the resonance point is detected. The order number can be set according to the actual condition of the automobile engine, and resonance points are obtained by utilizing the excitation order frequency sweep generated by different cylinder deactivation running states of the engine so as to adapt to the problem of specific torsional system resonance of different engines. Wherein, the excitation source comes from the engine body, and no additional equipment is required to be added.
In the embodiment of the invention, after the ECU acquires the sweep frequency rotating speed corresponding to the cylinder deactivation command, the resonance rotating speed is acquired according to the sweep frequency rotating speed corresponding to the cylinder deactivation command and the excitation frequency corresponding to the sweep frequency rotating speed.
And 102, controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
In the embodiment of the invention, after the resonance rotating speed is obtained, the ECU can avoid the resonance rotating speed corresponding to the cylinder deactivation instruction on the premise of not changing the output power by a full-cylinder instruction or a mode of increasing the rotating speed of the engine and simultaneously withdrawing the advance angle of ignition.
The method for avoiding the resonance of the torsion system comprises the steps of obtaining a resonance rotating speed corresponding to a cylinder stopping instruction based on the cylinder stopping instruction of an engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
Embodiments of the present invention provide another method for avoiding resonance of a torsional system, which may include:
step 201, receiving a sweep frequency rotating speed corresponding to the cylinder deactivation command returned by the rotating speed sensor.
In the embodiment of the invention, after the engine receives the cylinder deactivation command, the rotating speed sensor arranged in the engine receives the sweep frequency rotating speed information of the engine under different cylinder deactivation working states and returns the sweep frequency rotating speed information to the ECU.
Further, the step 201 may include:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction.
In an embodiment of the present invention, the cylinder deactivation command may include a full-cylinder operation command, a half-cylinder operation command, and a cylinder deactivation operation command, where a calculation formula of the full-cylinder excitation order "full-cylinder excitation order is equal to the number of cylinders/strokes of the engine" is given. The cylinder-off operation instruction refers to the operation of turning off any one cylinder or any three cylinders. When the engine is a 2-stroke 4-cylinder engine, the full-cylinder excitation order is 2 orders, when the engine is a 2-stroke 6-cylinder engine, the full-cylinder excitation order is 3 orders, and the like. The half-cylinder operation instruction means that the number of working cylinders of the engine is halved, the ignition is uniformly carried out, and the frequency sweep is carried out by obtaining the excitation order at the moment. When the 4-cylinder engine is used, the first cylinder and the fourth cylinder are cut off, the second cylinder and the third cylinder work, uniform ignition is realized, the ignition sequence is 'first cylinder deactivation → third cylinder ignition → fourth cylinder deactivation → second cylinder ignition', 1-order excitation is obtained, and frequency sweeping is carried out. The cylinder-off operation instruction is to turn off any cylinder of the multi-cylinder engine or only enable any cylinder to work, obtain the minimum excitation order and carry out frequency sweeping.
And 2011, receiving sweep frequency rotating speeds returned by the rotating speed sensor and respectively corresponding to the full-cylinder operating instruction, the half-cylinder operating instruction and the cylinder-breaking operating instruction.
In an embodiment of the invention, reference is made to fig. 3 for an exemplary application of the method to a 2-stroke 4-cylinder engine. The full-cylinder excitation frequency sweep linearly changes the engine speed from n1 to n2, and the excitation frequency corresponding to the full-cylinder working of the engine also linearly changes from f1 to f2, so that the frequency sweep from f1 to f2 is realized. In a 2-stroke multi-cylinder engine, the excitation order during full-cylinder operation is "full-cylinder excitation order is equal to the number of cylinders/2", that is, 2-order for a 4-cylinder engine and 3-order for a 6-cylinder engine. The engine speed n1 is related to the excitation frequency by the "excitation frequency f1 ═ engine speed n1/60 ═ full cylinder excitation order".
For ease of understanding, referring to FIG. 4, the relationship of 4-cylinder engine excitation frequency to rotational speed and the order-corresponding frequency are illustrated. The horizontal axis represents the engine speed rpm, the vertical axis represents the excitation frequency Hz, and the full-cylinder excitation of the 4-cylinder engine is 2-step (dotted line in the figure). In the figure, the all-cylinder sweep rotating speed region is 700rpm to 1500rpm of the lowest common rotating speed (idle rotating speed) of the engine, and the corresponding 2-order excitation frequency is 23Hz to 50 Hz. The engine rotation speed is 0rpm-700rpm (below 2-step excitation 23 Hz), which is the unstable working area of the engine, the operation condition is limited to start or stop, and the slope of the rotation speed change is nonlinear and uncontrollable, so the result obtained in the area is only used as a reference and needs to be checked. Therefore, the confidence frequency range of the all-cylinder excitation order frequency sweep result is above 23Hz, and the resonance point is usually in a lower frequency range, so that the resonance point needs to be found by carrying out frequency sweep with lower order.
Step 202, acquiring a resonance rotating speed corresponding to an engine cylinder deactivation command based on the engine cylinder deactivation command.
Step 202 may refer to step 101 and will not be repeated here.
Illustratively, referring to fig. 2, the step 202 may include:
In the embodiment of the invention, as an example, referring to fig. 5, the result of the frequency sweep of the 4-cylinder machine is shown, wherein the abscissa represents the frequency and the ordinate represents the amplitude. In the figure, the solid line and the short line have 0.5-order sweep response and generate resonance at 10.5 Hz; the response of the 2-step start-up regime (0-700 rpm) resonates at 10.5Hz, while the 1-step does not resonate over the sweep range. The torsional resonance point of the system can be judged to be 10.5Hz through the steps.
In the embodiment of the invention, the resonance rotating speed rpmp is calculated according to the torsional resonance point res and the engine cylinder deactivation command. The formula "resonance speed rpmp ═ resonance point res × 60/minimum firing order mfo" is given, where the engine cylinder deactivation command determines the minimum firing order mfo. In the engine shown in the above example, it is found that the torsional resonance point res is 10.5Hz, and when the cylinder deactivation command is 0.5 (i.e. 2 cylinders are operated), the minimum ignition order mfo is 1 order, and the resonance rpm rpmp is 630 rpm; when the cylinder deactivation command is 0.25 (i.e., 3 cylinders active), the minimum firing order mfo is 0.5, at which point the resonant rpm rpmp is 1260rpm, and so on.
And step 203, controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
In the embodiment of the invention, the method for realizing the unchanged output power comprises the steps that the cylinder deactivation command is 0 (namely, the all-cylinder operation) or the ignition advance angle is retreated while the engine speed is increased. Referring to the above example, when the cylinder deactivation command is 0.5, the operation condition needs to avoid 630 rpm; when the cylinder deactivation instruction is 0.25, the operating condition needs to avoid 1260rpm, and so on, and the resonance rotating speed corresponding to the cylinder deactivation instruction is avoided according to the resonance rotating speed corresponding to the cylinder deactivation instruction of different orders.
The method for avoiding the resonance of the torsion system comprises the steps of obtaining a resonance rotating speed corresponding to a cylinder stopping instruction based on the cylinder stopping instruction of an engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
Fig. 6 is a block diagram of an apparatus 60 for avoiding resonance of a torsional system according to an embodiment of the present invention, which may include:
the calculation module 601 is configured to obtain a resonance rotation speed corresponding to the cylinder deactivation instruction according to the sweep rotation speed corresponding to the cylinder deactivation instruction;
and the resonance avoiding module 602 is used for controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power when the engine runs.
The method for avoiding the resonance of the torsion system comprises the steps of obtaining a resonance rotating speed corresponding to a cylinder stopping instruction based on the cylinder stopping instruction of an engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
Referring to fig. 7, there is shown a block diagram of another apparatus 70 for avoiding resonance of a torsional system according to an embodiment of the present invention, which may include:
and the receiving module 701 is used for receiving the sweep rotating speed which is returned by the rotating speed sensor and corresponds to the cylinder deactivation command.
Further, the receiving module 701 may include:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction.
And the receiving submodule 7011 is configured to receive sweep rotation speeds, which are returned by the rotation speed sensor and correspond to the full-cylinder operation instruction, the half-cylinder operation instruction, and the cylinder deactivation operation instruction, respectively.
And the calculating module 702 is configured to calculate, according to the sweep rotating speed corresponding to the cylinder deactivation instruction, a resonance rotating speed corresponding to the cylinder deactivation instruction.
Further, the calculation module 702 may include:
and the first calculating submodule 7021 is configured to obtain a resonance point according to the sweep rotation speed calculation corresponding to the cylinder deactivation instruction.
And the second calculating submodule 7021 is configured to obtain a resonance rotation speed corresponding to the cylinder deactivation instruction according to the resonance point calculation.
And the resonance avoiding module 703 is configured to control the engine to avoid a resonance rotating speed corresponding to the cylinder deactivation instruction on the premise of not changing output power when the engine runs.
Further, the rotating speed sensor is a rotating speed sensor and/or an external sensor of the vehicle.
The method for avoiding the resonance of the torsion system comprises the steps of obtaining a resonance rotating speed corresponding to a cylinder stopping instruction based on the cylinder stopping instruction of an engine; and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power. According to the method, the corresponding resonance point and the corresponding rotating speed are obtained by calculating the rotating speed information corresponding to the excitation order generated by different cylinder deactivation operation modes, the rotating speed corresponding to the resonance point is avoided when the vehicle operates, and the comfort and the reliability of the vehicle when the cylinder deactivation technology is applied are guaranteed.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of avoiding torsional system resonance, the method comprising:
acquiring a resonance rotating speed corresponding to an engine cylinder deactivation instruction based on the engine cylinder deactivation instruction;
and controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
2. The method of claim 1, wherein obtaining the resonant speed corresponding to the cylinder deactivation command based on the engine deactivation command comprises:
calculating according to the sweep frequency rotating speed corresponding to the cylinder deactivation command to obtain a resonance point;
and acquiring the resonance rotating speed corresponding to the cylinder deactivation command according to the resonance point calculation.
3. The method of claim 2, wherein the step of obtaining the resonant speed corresponding to the cylinder deactivation command based on the engine deactivation command is preceded by the step of:
and receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the cylinder deactivation command.
4. The method of claim 3, wherein receiving a swept rotational speed corresponding to the cylinder deactivation command returned by a rotational speed sensor comprises:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction;
and receiving sweep frequency rotating speeds which are respectively corresponding to the full-cylinder operation instruction, the half-cylinder operation instruction and the cylinder-breaking operation instruction and are returned by the rotating speed sensor.
5. The method according to claim 3 or 4,
the rotating speed sensor is a rotating speed sensor and/or an external sensor of the vehicle.
6. An apparatus for avoiding resonance in a torsional system, the apparatus comprising:
the calculation module is used for acquiring a resonance rotating speed corresponding to an engine cylinder deactivation instruction based on the engine cylinder deactivation instruction;
and the resonance avoiding module is used for controlling the engine to avoid the resonance rotating speed corresponding to the cylinder deactivation command on the premise of not changing the output power.
7. The apparatus of claim 6, wherein the computing module comprises:
the first calculation submodule is used for calculating according to the sweep frequency rotating speed corresponding to the cylinder deactivation command and acquiring a resonance point;
and the second calculation submodule is used for acquiring the resonance rotating speed corresponding to the cylinder deactivation command according to the resonance point calculation.
8. The apparatus of claim 7, wherein the first computation submodule, before, further comprises:
and the receiving module is used for receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the cylinder deactivation instruction.
9. The apparatus of claim 8, wherein the receiving module comprises:
the cylinder deactivation command comprises: a full-cylinder operation instruction, a half-cylinder operation instruction and a cylinder-breaking operation instruction;
and the receiving submodule is used for receiving the sweep frequency rotating speed which is returned by the rotating speed sensor and corresponds to the full-cylinder operating instruction, the half-cylinder operating instruction and the cylinder-breaking operating instruction respectively.
10. The apparatus according to claim 8 or 9,
the rotating speed sensor is a rotating speed sensor and/or an external sensor of the vehicle.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115247612A (en) * | 2022-05-09 | 2022-10-28 | 广州汽车集团股份有限公司 | Engine misfire monitoring method, vehicle, and computer-readable storage medium |
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| JP2018119525A (en) * | 2017-01-27 | 2018-08-02 | 株式会社デンソー | Electronic control device for vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115247612A (en) * | 2022-05-09 | 2022-10-28 | 广州汽车集团股份有限公司 | Engine misfire monitoring method, vehicle, and computer-readable storage medium |
| CN115247612B (en) * | 2022-05-09 | 2023-08-01 | 广州汽车集团股份有限公司 | Engine misfire monitoring method, vehicle, and computer-readable storage medium |
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