CN112498548B - Noise reduction control method and noise reduction control system of all-terrain vehicle - Google Patents
Noise reduction control method and noise reduction control system of all-terrain vehicle Download PDFInfo
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- CN112498548B CN112498548B CN202110122437.2A CN202110122437A CN112498548B CN 112498548 B CN112498548 B CN 112498548B CN 202110122437 A CN202110122437 A CN 202110122437A CN 112498548 B CN112498548 B CN 112498548B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/412—Speed sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/01—Motorcycles with four or more wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
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Abstract
The invention discloses a noise reduction control method and a noise reduction control system of an all-terrain vehicle. The noise reduction control method of the all-terrain vehicle comprises the steps of detecting gears of the all-terrain vehicle, wherein the gears comprise a low gear and a high gear; and if the all-terrain vehicle is in the low gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value. The noise reduction control system of the all-terrain vehicle comprises a gear detector and a controller, wherein the gear detector is used for detecting the gear of the all-terrain vehicle, the controller is connected with the gear detector, and when the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the speed of the all-terrain vehicle to be less than or equal to a first speed threshold value. According to the noise reduction control method and the noise reduction control system of the all-terrain vehicle, the noise generated by the all-terrain vehicle is reduced and the driving feeling is improved by controlling the vehicle speed of the all-terrain vehicle in a low gear to be smaller than the first vehicle speed threshold value.
Description
Technical Field
The invention relates to the technical field of all-terrain vehicles, in particular to a noise reduction control method and a noise reduction control system of an all-terrain vehicle.
Background
The all-terrain vehicle has multiple purposes, good off-road performance, no limitation of road conditions, suitability for driving on various terrains, such as sand beach, riverbed, forest road, stream and severe desert terrains, capability of carrying people or transporting goods, and wide application. ATVs are generally classified as four-wheeled ATVs, multi-purpose ATVs, recreational land vehicles, and the like. However, the existing all-terrain vehicles have the problem of being noisy.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention provides a noise reduction control method of an all-terrain vehicle, which can reduce the noise of the all-terrain vehicle.
The invention also provides a noise reduction control system of the all-terrain vehicle, which can reduce the noise of the all-terrain vehicle.
The noise reduction control method of the all-terrain vehicle comprises the following steps: detecting the gear positions of the all-terrain vehicle, wherein the gear positions comprise a low gear position and a high gear position; and if the all-terrain vehicle is in the low gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value.
According to the noise reduction control method of the all-terrain vehicle, the noise of the all-terrain vehicle is reduced by controlling the vehicle speed of the all-terrain vehicle to be less than or equal to the first vehicle speed threshold when the all-terrain vehicle is in a low-speed gear.
In some embodiments, the method for noise reduction control of an all-terrain vehicle further comprises: detecting whether a vehicle speed detector for detecting the vehicle speed of the all-terrain vehicle has a fault; if the vehicle speed detector has no fault and the all-terrain vehicle is in the low gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to the first vehicle speed threshold value; and if the vehicle speed detector has a fault and the all-terrain vehicle is in the low gear, controlling the rotating speed of an engine of the all-terrain vehicle to be smaller than or equal to a first rotating speed threshold value so as to enable the vehicle speed of the all-terrain vehicle to be smaller than or equal to the first vehicle speed threshold value.
In some embodiments, the method for noise reduction control of an all-terrain vehicle further comprises: if the vehicle speed detector has no fault and the all-terrain vehicle is in the high-speed gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a second vehicle speed threshold value; and if the vehicle speed detector has a fault and the all-terrain vehicle is in the high-speed gear, controlling the rotating speed of the engine to be less than or equal to a second rotating speed threshold value so that the vehicle speed of the all-terrain vehicle is less than or equal to a second vehicle speed threshold value.
In some embodiments, the vehicle speed of the ATV is controlled by controlling the frequency of fuel cuts to the engine of the ATV.
In some embodiments, if the vehicle speed detector is not faulty and the all-terrain vehicle is in the low gear, the fuel cut frequency of the engine of the all-terrain vehicle is controlled according to a first difference between the detected vehicle speed value of the vehicle speed detector and the first vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the first vehicle speed threshold value, wherein the fuel cut frequency is inversely related to the first difference.
In some embodiments, if the vehicle speed detector is faulty and the all-terrain vehicle is in the low gear, the rotational speed of the engine is controlled within a first rotational speed interval by controlling the fuel cut-off frequency such that the rotational speed of the engine is less than or equal to the first rotational speed threshold, wherein the highest rotational speed within the first rotational speed interval is less than or equal to the first rotational speed threshold.
In some embodiments, if the vehicle speed detector is not faulty and the all-terrain vehicle is in the high gear, the fuel cut frequency of the engine of the all-terrain vehicle is controlled according to a second difference between the detected vehicle speed value of the vehicle speed detector and the second vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the second vehicle speed threshold value, wherein the fuel cut frequency is inversely related to the second difference.
In some embodiments, if the all-terrain vehicle is in the high gear and the vehicle speed detector is faulty, the rotational speed of the engine is controlled within a second rotational speed interval by controlling the fuel cut-off frequency such that the rotational speed of the engine is less than or equal to the second rotational speed threshold, wherein the highest rotational speed within the second rotational speed interval is less than or equal to the second rotational speed threshold.
The noise reduction control system of the all-terrain vehicle comprises the following components: a gear detector for detecting the gears of the all-terrain vehicle, wherein the gears include a low gear and a high gear; and the controller is connected with the gear detector, and controls the vehicle speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value when the gear detector detects that the all-terrain vehicle is in the low gear.
According to the noise reduction control system of the all-terrain vehicle, the noise generated by the all-terrain vehicle is reduced by controlling the speed of the all-terrain vehicle in a low gear.
In some embodiments, the noise reduction control system of an all-terrain vehicle further comprises a vehicle speed detector for detecting a vehicle speed of the all-terrain vehicle, a fault detector for detecting whether the vehicle speed detector is faulty or not, and a rotation speed detector for detecting a rotation speed of an engine of the all-terrain vehicle, the controller is connected to the vehicle speed detector, the fault detector, and the rotation speed detector, the controller controls the vehicle speed of the all-terrain vehicle to be less than or equal to the first vehicle speed threshold when the fault detector detects that the vehicle speed detector is not faulty and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the rotation speed of the engine of the all-terrain vehicle to be less than or equal to the first rotation speed threshold when the fault detector detects that the vehicle speed detector is faulty and the gear detector detects that the all-terrain vehicle is in the low, so that the vehicle speed of the all-terrain vehicle is less than or equal to a first vehicle speed threshold.
In some embodiments, the controller controls the vehicle speed of the all-terrain vehicle to be equal to or less than a second vehicle speed threshold when the fault detector detects that the vehicle speed detector is not faulty and the gear detector detects that the all-terrain vehicle is in the high gear, and controls the rotation speed of the engine to be equal to or less than a second rotation speed threshold when the fault detector detects that the vehicle speed detector is faulty and the gear detector detects that the all-terrain vehicle is in the high gear, such that the vehicle speed of the all-terrain vehicle is equal to or less than the second vehicle speed threshold.
In some embodiments, the controller controls the vehicle speed of the all terrain vehicle by controlling a frequency of fuel cuts of an engine of the all terrain vehicle.
In some embodiments, when the failure detector detects that the vehicle speed detector is not in failure and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls a fuel cut frequency of an engine of the all-terrain vehicle according to a first difference value between a detected vehicle speed value of the vehicle speed detector and the first vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is equal to or less than the first vehicle speed threshold value, the fuel cut frequency is inversely related to the first difference value, and when the failure detector detects that the vehicle speed detector is in failure and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the rotation speed of the engine within a first rotation speed interval by controlling the fuel cut frequency so that the rotation speed of the engine is equal to or less than the first rotation speed threshold value, wherein the highest rotation speed in the first rotation speed interval is less than or equal to the first rotation speed threshold.
In some embodiments, when the failure detector detects that the vehicle speed detector is not in failure and the gear detector detects that the all-terrain vehicle is in the high gear, the controller controls a fuel cut frequency of an engine of the all-terrain vehicle according to a second difference between a detected vehicle speed value of the vehicle speed detector and the second vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is equal to or less than the second vehicle speed threshold value, wherein the fuel cut frequency is inversely related to the second difference, and when the failure detector detects that the vehicle speed detector is in failure and the gear detector detects that the all-terrain vehicle is in the high gear, the controller controls the rotation speed of the engine within a second rotation speed interval by controlling the fuel cut frequency so that the rotation speed of the engine is equal to or less than the second rotation speed threshold value, wherein the highest rotation speed in the second rotation speed interval is less than or equal to the second rotation speed threshold.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flow chart of a method for noise reduction control of an all-terrain vehicle according to an embodiment of the present invention.
Fig. 2 is a flow chart of a method of noise reduction control of an all-terrain vehicle according to another embodiment of the present invention.
Fig. 3 is a flow chart of a method of noise reduction control of an all-terrain vehicle according to yet another embodiment of the present invention.
FIG. 4 is a schematic block diagram of a noise reduction control system for an all-terrain vehicle according to an embodiment of the present invention.
Reference numerals:
a noise reduction control system 100; a controller 110; a shift position detector 120; a vehicle speed detector 130; a fault detector 140; a rotational speed detector 150; an engine 160.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The noise reduction control method of the all-terrain vehicle according to the embodiment of the invention is described below with reference to the accompanying drawings.
As shown in fig. 1, the noise reduction control method of the all-terrain vehicle according to the embodiment of the invention comprises the following steps:
detecting the gears of the all-terrain vehicle, wherein the gears comprise a low gear and a high gear;
and if the all-terrain vehicle is detected to be in a low gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value.
According to the noise reduction control method of the all-terrain vehicle, the noise of the all-terrain vehicle is reduced by controlling the vehicle speed of the all-terrain vehicle to be less than or equal to the first vehicle speed threshold when the all-terrain vehicle is in a low-speed gear. In other words, by controlling the speed of the ATV when in the low gear, the rotational speed of the ATV's engine is limited, thereby reducing the noise generated by the engine. For ATVs, the noise is primarily due to the excessive speed of the vehicle when the ATV is in the low gear. Although legislation usually has speed limit requirements for atvs, the prior art only limits the speed of atvs according to the legislation requirements and does not consider the noise problem of atvs, especially the problem that when the atvs are in low gear, the vehicle speed is too high, which causes too high noise. Compared with the prior art, the noise reduction control method of the all-terrain vehicle provided by the embodiment of the invention can obviously reduce the noise of the all-terrain vehicle and improve the driving feeling of the all-terrain vehicle by controlling the speed of the all-terrain vehicle at a low gear.
For example, to make the noise generated by the all-terrain vehicle not exceed 90 db, a first vehicle speed threshold is preset, and the vehicle speed of the all-terrain vehicle in the low gear is controlled to be less than or equal to the first vehicle speed threshold, so that the noise generated by the all-terrain vehicle is less than or equal to 90 db. In other words, when the all-terrain vehicle is in a low gear, the noise generated by the all-terrain vehicle is larger when the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value, but the noise generated by the all-terrain vehicle is always not more than 90 decibels, so that the noise generated by the all-terrain vehicle is controlled.
According to the noise reduction control method of the all-terrain vehicle, the purpose that the noise generated by the all-terrain vehicle in the low gear is within an acceptable range is achieved by limiting the speed of the all-terrain vehicle in the low gear, the driving feeling of a driver is improved, and the noise pollution generated by the all-terrain vehicle is reduced.
In some embodiments, the method for noise reduction control of an all-terrain vehicle further comprises:
detecting whether a vehicle speed detector for detecting the vehicle speed of the all-terrain vehicle has a fault;
if the vehicle speed detector has no fault and the all-terrain vehicle is in a low-speed gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value;
and if the vehicle speed detector has a fault and the all-terrain vehicle is in a low gear, controlling the rotating speed of the engine of the all-terrain vehicle to be less than or equal to a first rotating speed threshold value so as to enable the vehicle speed of the all-terrain vehicle to be less than or equal to the first vehicle speed threshold value.
The noise reduction control method of the all-terrain vehicle provided by the embodiment comprises the step of judging whether the vehicle speed detector is in fault. The first vehicle speed threshold value and the first rotating speed threshold value are preset values.
In the above embodiment, when the all-terrain vehicle is in the low gear, if the vehicle speed detector has no fault, the vehicle speed of the all-terrain vehicle detected by the vehicle speed detector is not wrong, that is, the detected vehicle speed of the all-terrain vehicle is the real vehicle speed, so that the vehicle speed of the all-terrain vehicle can be controlled to be less than or equal to the first vehicle speed threshold value based on the detected vehicle speed, so as to control the noise generated by the all-terrain vehicle to be below the specified decibel.
If the vehicle speed detector has a fault, the vehicle speed detector cannot detect the vehicle speed of the all-terrain vehicle or the detected vehicle speed is not the real vehicle speed of the all-terrain vehicle, and if the vehicle speed of the all-terrain vehicle is controlled based on the wrong vehicle speed detection value, the vehicle speed of the all-terrain vehicle cannot be controlled within the first vehicle speed threshold value, so that noise reduction cannot be realized. Therefore, under the condition that the vehicle speed detector has a fault, the real vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value by controlling the rotating speed of the engine to be smaller than or equal to the first rotating speed threshold value, and the purpose of reducing the noise of the all-terrain vehicle is achieved.
Specifically, when the rotation speed of the engine is smaller than or equal to the first rotation speed threshold value, the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value. In other words, the greater the rotation speed of the engine, the higher the vehicle speed, therefore, the rotation speed of the engine is controlled to be less than or equal to the first rotation speed threshold value, the vehicle speed of the all-terrain vehicle is indirectly controlled to be less than or equal to the first vehicle speed threshold value, and the noise generated by the all-terrain vehicle is controlled not to exceed the set value. That is, the first rotational speed threshold of the engine is positively correlated to the first vehicle speed threshold.
According to the noise reduction control method of the all-terrain vehicle of the above embodiment, by detecting whether the vehicle speed detector has a fault, an error in controlling the vehicle speed when the vehicle speed detector has a fault is avoided, and instead, in the case where the vehicle speed detector has a fault, the vehicle speed is controlled by controlling the engine speed, thus making the noise reduction control more reliable.
In some embodiments, in order to further reduce noise generated by the all-terrain vehicle, the noise reduction control method of the all-terrain vehicle further comprises:
if the vehicle speed detector has no fault and the all-terrain vehicle is in a high-speed gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a second vehicle speed threshold value;
and if the vehicle speed detector has a fault and the all-terrain vehicle is in a high-speed gear, controlling the rotating speed of the engine to be less than or equal to a second rotating speed threshold value so that the vehicle speed of the all-terrain vehicle is less than or equal to a second vehicle speed threshold value.
The second vehicle speed threshold value and the second rotating speed threshold value are preset values, and the second vehicle speed threshold value is the highest vehicle speed value set for the all-terrain vehicle in the high-speed gear.
Controlling the rotation speed of the engine of the all-terrain vehicle to be less than or equal to the second rotation speed threshold value so that the vehicle speed of the all-terrain vehicle is less than or equal to the second vehicle speed threshold value means that: and when the rotating speed of the engine is less than or equal to the second rotating speed threshold value, the vehicle speed of the all-terrain vehicle is less than or equal to the second vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the highest vehicle speed, namely the engine rotating speed of the all-terrain vehicle is positively correlated with the vehicle speed of the all-terrain vehicle.
In the embodiment, when the all-terrain vehicle is in a high gear, if the vehicle speed detector has no fault, the vehicle speed detector can detect the real vehicle speed of the all-terrain vehicle, and the vehicle speed of the all-terrain vehicle in the high gear is controlled by detecting the real vehicle speed, so that the noise generated when the all-terrain vehicle is in the high gear is reduced, the noise of the all-terrain vehicle is further reduced, and the driving feeling is improved.
If the vehicle speed detector is in fault, the vehicle speed detector cannot detect the vehicle speed of the all-terrain vehicle or the detected vehicle speed is in error, so that the vehicle speed of the all-terrain vehicle cannot be controlled based on the detected vehicle speed.
According to the noise reduction control method of the embodiment, under the condition that the vehicle speed detector has no fault, the noise is controlled by controlling the vehicle speed of the all-terrain vehicle in the high gear, and under the condition that the vehicle speed detector has the fault, the noise is controlled by controlling the rotating speed of the engine, so that the noise of the all-terrain vehicle in the high gear is reduced, and the noise is controlled more reliably.
In some embodiments, the speed of the ATV is controlled by controlling the frequency of fuel cuts to the ATV's engine.
Fuel cut-off of an engine means that fuel injection into the engine is temporarily interrupted in order to limit further increase of the engine speed. The rapid decrease in engine speed facilitates deceleration of the all-terrain vehicle. The fuel cut frequency of the engine refers to the number of times the engine cuts off fuel supply per unit time, and is used for describing the frequency of cutting off fuel injection into the engine. It should be noted that the time length of each fuel cut can be preset.
That is, by controlling the fuel cut-off frequency of the engine of the all-terrain vehicle, the rotation speed of the engine can be controlled, and thus the vehicle speed of the all-terrain vehicle can be controlled.
In addition, compared with the mechanical mode of limiting the maximum opening of the throttle valve to limit the rotating speed of the engine, the rotating speed of the engine is controlled by controlling the fuel cut-off frequency, the power of the engine is not obviously reduced, the driving feeling is good, and the problem that the speed limit is easily removed by being modified by a user does not exist.
Specifically, as shown in fig. 2, the noise reduction control method of the all-terrain vehicle according to the embodiment of the invention comprises the following steps: if the vehicle speed detector has no fault and the all-terrain vehicle is in a low gear, controlling the fuel cut-off frequency of an engine of the all-terrain vehicle according to a first difference value between a vehicle speed detection value of the vehicle speed detector and a first vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value, wherein the fuel cut-off frequency is inversely related to the first difference value, namely the first difference value is larger, the fuel cut-off frequency is smaller under the condition that the fuel cut-off time length is fixed every time, and conversely, the fuel cut-off frequency is larger when the first difference value is smaller, for example, the fuel cut-off frequency of the engine is.
Wherein the first difference value is a difference value between the first vehicle speed threshold value and a current vehicle speed value (e.g., a vehicle speed detection value of a vehicle speed detector without a fault).
The higher the fuel cut-off frequency of the engine, the more controllable the engine speed. For example, when the vehicle speed detection value is close to the first vehicle speed threshold value, the fuel cut of the engine is more frequent, and the rise of the rotating speed of the engine can be effectively controlled, so that the rotating speed of the engine is not too high, the vehicle speed of the all-terrain vehicle is less than or equal to the first vehicle speed threshold value can be better and reliably realized, and the noise generated by the all-terrain vehicle is better controlled within a preset range.
And the fuel cut-off frequency of the engine is regulated and controlled based on the first difference value, so that the rotating speed change of the engine is softer, the vehicle speed change of the all-terrain vehicle is softer, and the driving feeling of the all-terrain vehicle is improved.
Further, as shown in fig. 2, if the vehicle speed detector has a fault and the all-terrain vehicle is in a low gear, the rotation speed of the engine is controlled within a first rotation speed interval by controlling the fuel cut-off frequency, so that the rotation speed of the engine is less than or equal to a first rotation speed threshold value, wherein the highest rotation speed within the first rotation speed interval is less than or equal to the first rotation speed threshold value.
That is, when the vehicle speed detector has a fault, the rotation speed of the engine does not exceed the first rotation speed threshold value by controlling the fuel cut-off frequency of the engine, and the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value. Wherein the first speed range is a range of preset engine speeds. It can be understood that the highest rotation speed in the first rotation speed interval is less than or equal to the first rotation speed threshold, and the rotation speed of the engine can be controlled in the first rotation speed interval to ensure that the rotation speed of the engine does not exceed the first rotation speed threshold.
For example, the first rotation speed threshold may be 5000 rpm, the first rotation speed interval may be set to 4900 rpm-5000 rpm, the supply of fuel to the engine is interrupted when the rotation speed of the engine reaches 5000 rpm, the rotation speed of the engine is decreased, and the supply of fuel to the engine is resumed when the rotation speed of the engine is decreased to 4900 rpm, thereby controlling the rotation speed of the engine within the first rotation speed interval.
Further, as shown in fig. 3, if the vehicle speed detector has no fault and the all-terrain vehicle is in a high gear, the fuel cut-off frequency of the engine of the all-terrain vehicle is controlled according to a second difference between the detected vehicle speed value of the vehicle speed detector and a second vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the second vehicle speed threshold value, wherein the fuel cut-off frequency is inversely related to the second difference value.
The second difference is a difference between the second vehicle speed threshold and the current vehicle speed value (the vehicle speed detection value of the vehicle speed detector without the fault). The inverse correlation between the fuel cut-off frequency of the engine and the second difference value means that: the smaller the second difference, the higher the frequency of fuel cut of the engine.
The rotating speed of the engine can be controlled by controlling the fuel cut-off frequency of the engine, so that the speed of the all-terrain vehicle in a high-speed gear can be better and reliably ensured to be less than or equal to a second vehicle speed threshold value, and the all-terrain vehicle can be better limited in speed. And the fuel cut-off frequency of the engine is regulated and controlled through the second difference value, so that the vehicle speed of the all-terrain vehicle is changed more softly, and the driving feeling of the all-terrain vehicle is improved.
Further, as shown in fig. 3, if the all-terrain vehicle is in a high gear and the vehicle speed detector has a fault, the rotation speed of the engine is controlled within a second rotation speed interval by controlling the fuel cut-off frequency, so that the rotation speed of the engine is less than or equal to a second rotation speed threshold value, wherein the highest rotation speed within the second rotation speed interval is less than or equal to the second rotation speed threshold value.
That is, when the vehicle speed detector has a fault, the fuel cut-off frequency of the engine is controlled so that the rotating speed of the engine does not exceed the second rotating speed threshold value, and therefore the vehicle speed of the all-terrain vehicle is smaller than or equal to the second vehicle speed threshold value. The second rotation speed range is a range of the preset engine rotation speed. It can be understood that the highest rotation speed in the second rotation speed interval is less than or equal to the second rotation speed threshold, and the rotation speed of the engine can be controlled in the second rotation speed interval to ensure that the rotation speed of the engine does not exceed the second rotation speed threshold.
Optionally, the second vehicle speed threshold is greater than the first vehicle speed threshold. For example, when the ATV is in low gear and the vehicle speed is no more than 30 kilometers per hour, the ATV generates no more than a predetermined value (e.g., 90 decibels), and optionally, the first vehicle speed threshold may be in the range of 25 kilometers per hour to 30 kilometers per hour.
For example, the maximum vehicle speed of the ATV at high gear is 60 km/h, and the second vehicle speed threshold may be in the range of 55 km/h to 60 km/h.
The following describes a noise reduction control system for an all-terrain vehicle according to an embodiment of the invention.
As shown in fig. 4, the noise reduction control system 100 of the all-terrain vehicle according to the embodiment of the present invention includes a gear position detector 120 and a controller 110. The gear position detector 120 is used for detecting the gear positions of the all-terrain vehicle, wherein the gear positions comprise a low gear position and a high gear position. The controller 110 is connected to the gear detector 120, and when the gear detector 120 detects that the all-terrain vehicle is in a low gear, the controller 110 controls the speed of the all-terrain vehicle to be less than or equal to a first vehicle speed threshold value.
That is, the gear position detector 120 transmits a detected gear position detection signal to the controller 110, and the controller 110 determines whether the all-terrain vehicle is in a high gear or a low gear.
In some embodiments, ATV noise reduction control system 100 further includes a vehicle speed detector 130 for detecting a vehicle speed of the ATV, a fault detector 140 for detecting whether vehicle speed detector 130 is faulty, and a rotational speed detector 150 for detecting a rotational speed of an engine of the ATV. The controller 110 is connected to a vehicle speed detector 130, a fault detector 140, and a rotational speed detector 150. The failure detector 140 is connected to the vehicle speed detector 130.
When fault detector 140 detects that vehicle speed detector 130 is not faulty and gear detector 120 detects that the atv is in a low gear, controller 110 controls the vehicle speed of the atv to be equal to or less than a first vehicle speed threshold in order to control the noise generated by the atv.
When the fault detector 140 detects that the vehicle speed detector 130 has a fault and the gear detector 120 detects that the all-terrain vehicle is in a low gear, the controller 110 controls the rotating speed of the engine of the all-terrain vehicle to be less than or equal to a first rotating speed threshold value, so that the vehicle speed of the all-terrain vehicle is indirectly controlled to be less than or equal to the first vehicle speed threshold value, and noise generated by the all-terrain vehicle in the low gear is controlled.
When fault detector 140 detects that vehicle speed detector 130 is not faulty and gear detector 120 detects that the atv is in a high gear, controller 110 controls the vehicle speed of the atv to be equal to or less than a second vehicle speed threshold in order to control the noise of the atv in the high gear.
When the malfunction detector 140 detects that the vehicle speed detector 130 has a malfunction and the gear detector 120 detects that the atv is in a high gear, the controller 110 controls the rotation speed of the engine to be equal to or less than the second rotation speed threshold value, thereby indirectly controlling the vehicle speed of the atv to be equal to or less than the second vehicle speed threshold value.
Therefore, the noise generated by the all-terrain vehicle in the high gear can be further controlled by controlling the vehicle speed of the all-terrain vehicle in the high gear, and the driving feeling is improved.
Further, the controller 110 controls the speed of the ATV by controlling the frequency of fuel cuts to the ATV's engine.
When the failure detector 140 detects that the vehicle speed detector 130 has no failure and the gear position detector 120 detects that the all-terrain vehicle is in a low gear, the controller 110 controls the fuel cut frequency of the engine of the all-terrain vehicle according to a first difference value between the detected vehicle speed value of the vehicle speed detector 130 and a first vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the first vehicle speed threshold value, wherein the fuel cut frequency is inversely related to the first difference value.
When the fault detector 140 detects that the vehicle speed detector 130 has a fault and the gear position detector 120 detects that the all-terrain vehicle is in a low gear, the controller 110 controls the rotation speed of the engine in a first rotation speed interval by controlling the fuel cut-off frequency, so that the rotation speed of the engine is smaller than or equal to a first rotation speed threshold value, wherein the highest rotation speed in the first rotation speed interval is smaller than or equal to the first rotation speed threshold value.
When the failure detector 140 detects that the vehicle speed detector 130 has no failure and the gear position detector 120 detects that the all-terrain vehicle is in the high gear, the controller 110 controls the fuel cut frequency of the engine of the all-terrain vehicle according to a second difference between the detected vehicle speed value of the vehicle speed detector 130 and a second vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is less than or equal to the second vehicle speed threshold value, wherein the fuel cut frequency is inversely related to the second difference.
When the fault detector 140 detects that the vehicle speed detector 130 has a fault and the gear position detector 120 detects that the all-terrain vehicle is in a high gear, the controller 110 controls the rotation speed of the engine in a second rotation speed interval by controlling the fuel cut-off frequency, so that the rotation speed of the engine is less than or equal to a second rotation speed threshold value, wherein the highest rotation speed in the second rotation speed interval is less than or equal to the second rotation speed threshold value.
Alternatively, the vehicle speed detector 130, the gear position detector 120, the failure detector 140, and the rotation speed detector 150 may be integrated with the controller 110.
According to the noise reduction control system of the all-terrain vehicle, the noise of the all-terrain vehicle can be reduced by controlling the vehicle speed of the all-terrain vehicle in a low gear and the vehicle speed of the all-terrain vehicle in a high gear, particularly, the noise generated by the all-terrain vehicle in the low gear is reduced, and the driving feeling is improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A noise reduction control method of an all-terrain vehicle is characterized by comprising the following steps:
detecting the gear positions of the all-terrain vehicle, wherein the gear positions comprise a low gear position and a high gear position;
detecting whether a vehicle speed detector for detecting the vehicle speed of the all-terrain vehicle has a fault;
if the vehicle speed detector has no fault and the all-terrain vehicle is in the low gear, controlling the fuel cut-off frequency of an engine of the all-terrain vehicle according to a first difference value between a vehicle speed detection value of the vehicle speed detector and a first vehicle speed threshold value so that the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value, wherein the fuel cut-off frequency is inversely related to the first difference value;
and if the vehicle speed detector has a fault and the all-terrain vehicle is in the low gear, controlling the rotating speed of an engine of the all-terrain vehicle to be smaller than or equal to a first rotating speed threshold value so as to enable the vehicle speed of the all-terrain vehicle to be smaller than or equal to the first vehicle speed threshold value.
2. The method of noise reduction control of an all-terrain vehicle of claim 1, further comprising:
if the vehicle speed detector has no fault and the all-terrain vehicle is in the high-speed gear, controlling the vehicle speed of the all-terrain vehicle to be less than or equal to a second vehicle speed threshold value;
and if the vehicle speed detector has a fault and the all-terrain vehicle is in the high-speed gear, controlling the rotating speed of the engine to be less than or equal to a second rotating speed threshold value so that the vehicle speed of the all-terrain vehicle is less than or equal to a second vehicle speed threshold value.
3. The method for noise reduction control of an all-terrain vehicle of claim 1,
and if the vehicle speed detector has a fault and the all-terrain vehicle is in the low gear, controlling the rotating speed of the engine in a first rotating speed interval by controlling the oil cut-off frequency so as to enable the rotating speed of the engine to be less than or equal to the first rotating speed threshold value.
4. The method for noise reduction control of an all-terrain vehicle of claim 2,
and if the vehicle speed detector has no fault and the all-terrain vehicle is in the high-speed gear, controlling the fuel cut-off frequency of an engine of the all-terrain vehicle according to a second difference value between the vehicle speed detection value of the vehicle speed detector and the second vehicle speed threshold value so that the vehicle speed of the all-terrain vehicle is smaller than or equal to the second vehicle speed threshold value, wherein the fuel cut-off frequency is inversely related to the second difference value.
5. The method for noise reduction control of an all-terrain vehicle of claim 4,
and if the all-terrain vehicle is in the high gear and the vehicle speed detector has a fault, controlling the rotating speed of the engine in a second rotating speed interval by controlling the oil cut-off frequency so as to enable the rotating speed of the engine to be less than or equal to a second rotating speed threshold value.
6. A noise reduction control system for an all-terrain vehicle, comprising:
a gear detector for detecting the gears of the all-terrain vehicle, wherein the gears include a low gear and a high gear;
the controller is connected with the gear detector;
the noise reduction control system of the all-terrain vehicle further comprises a vehicle speed detector for detecting the vehicle speed of the all-terrain vehicle, a fault detector for detecting whether the vehicle speed detector has a fault or not, and a rotating speed detector for detecting the rotating speed of an engine of the all-terrain vehicle, wherein the controller is connected with the vehicle speed detector, the fault detector and the rotating speed detector,
when the fault detector detects that the vehicle speed detector has no fault and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the fuel cut frequency of an engine of the all-terrain vehicle according to a first difference value between a detected vehicle speed value of the vehicle speed detector and a first vehicle speed threshold value, so that the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value, and the fuel cut frequency is inversely related to the first difference value,
when the fault detector detects that the vehicle speed detector has a fault and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the rotating speed of the engine of the all-terrain vehicle to be smaller than or equal to a first rotating speed threshold value, so that the vehicle speed of the all-terrain vehicle is smaller than or equal to the first vehicle speed threshold value.
7. The noise reduction control system for an all-terrain vehicle of claim 6, wherein the controller controls the vehicle speed of the all-terrain vehicle to be less than or equal to a second vehicle speed threshold when the fault detector detects that the vehicle speed detector is not faulty and the gear detector detects that the all-terrain vehicle is in the high gear,
when the fault detector detects that the vehicle speed detector has a fault and the gear detector detects that the all-terrain vehicle is in the high gear, the controller controls the rotating speed of the engine to be less than or equal to a second rotating speed threshold value so that the vehicle speed of the all-terrain vehicle is less than or equal to a second vehicle speed threshold value.
8. The noise reduction control system for an all-terrain vehicle of claim 6,
when the fault detector detects that the vehicle speed detector has a fault and the gear detector detects that the all-terrain vehicle is in the low gear, the controller controls the rotating speed of the engine within a first rotating speed interval by controlling the oil cut-off frequency so that the rotating speed of the engine is smaller than or equal to the first rotating speed threshold value.
9. The noise reduction control system for an all-terrain vehicle of claim 7, characterized in that the controller controls a frequency of fuel cut of an engine of the all-terrain vehicle according to a second difference between a detected vehicle speed value of the vehicle speed detector and the second vehicle speed threshold value such that the vehicle speed of the all-terrain vehicle is equal to or less than the second vehicle speed threshold value when the failure detector detects that the vehicle speed detector is not failed and the gear detector detects that the all-terrain vehicle is in the high gear, wherein the frequency of fuel cut is inversely related to the second difference,
when the fault detector detects that the vehicle speed detector has a fault and the gear detector detects that the all-terrain vehicle is in the high gear, the controller controls the rotating speed of the engine within a second rotating speed interval by controlling the fuel cut-off frequency, so that the rotating speed of the engine is smaller than or equal to a second rotating speed threshold value.
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