Electronic control automatic tensioning system, tensioning method and engine belt pulley system

Abstract

The invention relates to an electric control automatic tensioning system, a tensioning method and an engine belt pulley system.The tensioning system comprises a temperature sensor used for collecting the air temperature of the environment where a vehicle is located to obtain an environment temperature value; the vehicle speed sensor is used for collecting the running speed of the vehicle to obtain a vehicle speed value; the rotating speed sensor is used for collecting the rotating speed of a vehicle engine to obtain a rotating speed value; the controller is connected with the temperature sensor, the vehicle speed sensor and the rotating speed sensor and used for generating a tensioning control signal according to the environment temperature value, the vehicle speed value and the rotating speed value; the electric control tensioner is connected with the controller and used for adjusting the pre-tightening force of a conveying belt of the vehicle engine under the control of the tensioning control signal; the tensioning force of the conveying belt can be adjusted according to the running condition of the vehicle, and compared with a traditional mode that fixed tensioning force is set according to experience, the transmission efficiency of the conveying belt is improved, and the service life of the conveying belt is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engines, and in particular to an electronically controlled automatic tensioning system, a tensioning method and an engine pulley system. Background Art

[0002] With the continuous development of the automobile industry, the use of automobiles is becoming more and more common, but with it comes the intensification of fuel consumption, energy crisis, and environmental pollution, and the requirements for refined design and precise control of automobiles are getting higher and higher. At present, the pulley system used in the engine of the car mainly relies on manual adjustment of the belt tension based on experience after a period of use. In this way, the tension is too large, which makes the structural parts of the entire pulley system transitional in design, with more overall consumables and heavier weight, while reducing the service life of the belt and engine. In addition, since the tension of the pulley cannot be predicted, the risk of belt slippage is prone to occur, the reliability of the engine is poor, and even the engine temperature and fire are caused, which increases fuel consumption and aggravates emission pollution. There is a lack of records of the various parameters used in the pulley system, and there is a lack of sufficient data support for the optimization design of belts, pulley systems, and engines. Summary of the invention

[0003] In order to solve the technical problems in the prior art such as poor engine operating reliability caused by adjusting the belt tension according to experience, the present invention provides an electronically controlled automatic tensioning system, a tensioning method and an engine pulley system.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] An electric-controlled automatic tensioning system, comprising:

[0006] The temperature sensor is used to collect the temperature of the environment where the vehicle is located and obtain the ambient temperature value;

[0007] The vehicle speed sensor is used to collect the vehicle's running speed and obtain the vehicle speed value;

[0008] The speed sensor is used to collect the speed of the vehicle engine and obtain the speed value;

[0009] a controller, connected to the temperature sensor, the vehicle speed sensor and the rotation speed sensor, and configured to generate a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value;

[0010] An electronically controlled tensioner is connected to the controller and is used to adjust the pretensioning force of the conveyor belt of the vehicle engine under the control of the tensioning control signal.

[0011] The beneficial effects of the present invention are: by monitoring the ambient temperature, movement speed, and engine speed of the vehicle, the tension of the conveyor belt of the vehicle engine can be adjusted, and the tension of the conveyor belt can be adjusted according to the operating conditions of the vehicle. Compared with the traditional method of setting a fixed tension based on experience, the present invention can improve the transmission efficiency and service life of the conveyor belt.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the controller is specifically used to preset an initial tensioning value; calculate a temperature-compensated tensioning value based on the ambient temperature value; calculate a speed-compensated tensioning value based on the vehicle speed value and the speed value; calculate the sum of the initial tensioning value, the temperature-compensated tensioning value, the vehicle speed-compensated tensioning value and the speed-compensated tensioning value to obtain a preset tensioning force value; and generate the tensioning control signal based on the preset tensioning force value.

[0014] Furthermore, the controller is specifically used to, when the ambient temperature value is less than the lower limit of the preset ambient temperature range value, set the temperature compensation tension value to a negative number; when the ambient temperature value is within the preset ambient temperature range value, set the temperature compensation tension value to zero; when the ambient temperature value is greater than the upper limit of the preset ambient temperature range value, set the temperature compensation tension value to a positive number.

[0015] Furthermore, the controller is also specifically used to calculate the ratio between the vehicle speed value and the speed value to obtain an actual speed ratio value; when the actual speed ratio value is less than the lower limit value of the preset speed ratio range value, the speed compensation tensioning value is a positive number; when the actual speed ratio value is within the preset speed ratio range value, the speed compensation tensioning value is zero; when the actual speed ratio value is greater than the upper limit value of the preset speed ratio range value, the speed compensation tensioning value is a negative number.

[0016] Further, the electronically controlled tensioner comprises:

[0017] A control motor, connected to the controller, configured to control its own rotating shaft to output a first torque according to the tension control signal;

[0018] A transmission mechanism, connected to the rotating shaft of the control motor, for converting the first torque into a second torque;

[0019] a worm connected to the transmission mechanism and used for converting the second torque into a third torque;

[0020] A tensioning wheel arm is matched and connected with the worm, and is used to convert the third torque into axial telescopic movement under the guidance of the slideway; wherein the slideway is arranged on the housing, and the electric-controlled tensioner includes the housing;

[0021] The tension wheel is fixedly connected to the tension wheel arm and abuts against the conveyor belt of the vehicle engine. The tension wheel is used to move synchronously with the tension wheel arm to apply the preload force to the conveyor belt of the vehicle engine.

[0022] Furthermore, the electrically controlled tensioner further comprises:

[0023] A pressure sensor is connected to the controller via a wire, one end of which is fixed and the other end of which is connected to the tensioner arm, and is used to output a pressure control signal through feedback of the axial movement distance of the tensioner arm;

[0024] The controller is also used to correct the tension control signal according to the pressure control signal to obtain a tension correction control signal;

[0025] The electronically controlled tensioner is specifically used to adjust the pre-tensioning force of the conveyor belt of the vehicle engine under the control of the tension correction control signal.

[0026] Furthermore, the electrically controlled tensioner further comprises:

[0027] A displacement sensor connected to the controller via a wire and configured to output a displacement control signal according to the telescopic distance of the tensioning wheel arm;

[0028] The controller is also used to control the start and stop of the control motor according to the displacement control signal.

[0029] Furthermore, it also includes:

[0030] A wireless communication module is connected to the controller and is used to transmit the ambient temperature value, the vehicle speed value, the rotation speed value and the preset tension force value to a cloud server for storage via the Internet.

[0031] In order to solve the above technical problems, the present invention also provides an electric-controlled automatic tensioning method, the specific contents of which are as follows:

[0032] A tensioning method applied to the above-mentioned electric-controlled automatic tensioning system comprises the following steps:

[0033] The temperature sensor collects the temperature of the environment where the vehicle is located to obtain the ambient temperature value;

[0034] The vehicle speed sensor collects the vehicle's running speed and obtains the vehicle speed value;

[0035] The speed sensor collects the speed of the vehicle engine and obtains the speed value;

[0036] The controller generates a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value;

[0037] The electronically controlled tensioner adjusts the pre-tensioning force of the transmission belt of the vehicle engine under the control of the tensioning control signal.

[0038] In order to solve the above technical problems, the present invention also provides an engine pulley system, the specific contents of which are as follows:

[0039] An engine pulley system comprises the above-mentioned electronically controlled automatic tensioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The structure frame of an electric controlled automatic tensioning system in the embodiment of the present invention is Figure 1 ;

[0041] Figure 2 The structure frame of an electric controlled automatic tensioning system in the embodiment of the present invention is Figure 1 ;

[0042] Figure 3 Schematic diagram of the structure of the electric-controlled tensioner in an embodiment of the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0044] 1-bearing, 2-transmission mechanism, 3-slider, 4-spring, 5-worm, 6-slideway, 7-tensioning wheel arm, 8-tensioning wheel, 9-control motor, 10-pressure sensor, 11-displacement sensor. DETAILED DESCRIPTION

[0045] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0046] like Figure 1 As shown, this embodiment provides an electric-controlled automatic tensioning system, comprising:

[0047] The temperature sensor is used to collect the temperature of the environment where the vehicle is located and obtain the ambient temperature value;

[0048] The vehicle speed sensor is used to collect the vehicle's running speed and obtain the vehicle speed value;

[0049] The speed sensor is used to collect the speed of the vehicle engine and obtain the speed value;

[0050] a controller, connected to the temperature sensor, the vehicle speed sensor and the rotation speed sensor, and configured to generate a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value;

[0051] The electronically controlled tensioner is connected to the controller and is used to adjust the preload force of the conveyor belt of the vehicle engine under the control of the tension control signal. The preload force of the conveyor belt of the engine is set when the vehicle engine is designed; that is, the sum of the preset preload force and the regulated preload force is the final preload force; the regulated preload force is obtained by adjusting the electronically controlled tensioner under the control of the tension control signal.

[0052] like Figure 2 As shown, the electric-controlled automatic tensioning system also includes a wireless communication module and a cloud server, and the cloud server establishes a wireless communication connection with the controller through the wireless communication module; specifically, the wireless communication module can be a 4G or 5G communication module, and the 4G or 5G communication module accesses the Internet through a ground mobile communication base station, thereby allowing the controller to establish a wireless communication connection with the cloud server.

[0053] A wireless communication module is connected to the controller and is used to transmit the ambient temperature value, the vehicle speed value, the rotational speed value and the preset tensioning force value to a cloud server for storage via the Internet; the ambient temperature value, the vehicle speed value, the rotational speed value and the preload force of the engine belt can be obtained via the cloud server via the Internet; this facilitates the acquisition and analysis of the relationship between the preload force and the ambient temperature value, the vehicle speed value and the rotational speed value, so as to provide a scientific reference for designing the preset preload force of the engine belt.

[0054] In some embodiments, the controller is specifically used to preset an initial tension value; calculate a temperature compensation tension value according to the ambient temperature value; calculate a speed compensation tension value according to the vehicle speed value and the speed value; calculate the sum of the initial tension value, the temperature compensation tension value, the vehicle speed compensation tension value and the speed compensation tension value to obtain a preset tension value; and generate the tension control signal according to the preset tension value. When the ambient temperature value is less than the lower limit of the preset ambient temperature range value, the temperature compensation tension value is set to a negative number; when the ambient temperature value is within the preset ambient temperature range value, the temperature compensation tension value is set to zero; when the ambient temperature value is greater than the upper limit of the preset ambient temperature range value, the temperature compensation tension value is set to a positive number.

[0055] Specifically, the controller is also used to calculate the ratio between the vehicle speed value and the speed value to obtain an actual speed ratio value; when the actual speed ratio value is less than the lower limit value of the preset speed ratio range value, the speed compensation tensioning value is a positive number; when the actual speed ratio value is within the preset speed ratio range value, the speed compensation tensioning value is zero; when the actual speed ratio value is greater than the upper limit value of the preset speed ratio range value, the speed compensation tensioning value is a negative number.

[0056] like Figure 3 As shown, the electronically controlled tensioner comprises:

[0057] A control motor 9, connected to the controller, configured to control its own rotating shaft to output a first torque according to the tension control signal;

[0058] A transmission mechanism 2, connected to the rotating shaft of the control motor 9, for converting the first torque into a second torque;

[0059] A worm 5 connected to the transmission mechanism 2 and used for converting the second torque into a third torque;

[0060] The tensioning wheel arm 7 is matched and connected with the worm 5, and is used to convert the third torque into axial telescopic movement under the guidance of the slide slot 6; wherein the slide slot 6 is arranged on the housing, and the electric-controlled tensioner includes the housing;

[0061] The tension wheel 8 is fixedly connected to the tension wheel arm 7 and abuts against the conveyor belt of the vehicle engine. It is used to move synchronously with the tension wheel arm 7 to apply the pre-tightening force to the conveyor belt of the vehicle engine.

[0062] The electronically controlled tensioner further comprises:

[0063] A pressure sensor 10 is connected to the controller via a wire, one end of which is fixed and the other end of which is connected to the tensioning wheel arm 7, and is used to output a pressure control signal through feedback of the axial movement distance of the tensioning wheel arm 7;

[0064] The controller is also used to correct the tension control signal according to the pressure control signal to obtain a tension correction control signal;

[0065] The electronically controlled tensioner is specifically used to adjust the pre-tensioning force of the conveyor belt of the vehicle engine under the control of the tension correction control signal.

[0066] The electronically controlled tensioner further comprises:

[0067] A displacement sensor 11, connected to the controller via a wire, and configured to output a displacement control signal according to the telescopic distance of the tensioning wheel arm 7;

[0068] The controller is also used to control the start and stop of the control motor 9 according to the displacement control signal.

[0069] Specifically, a slide groove 6 is provided on the housing, a worm 5 is arranged in the slide groove 6, and a bearing 1 is sleeved on one end of the worm 5; the transmission mechanism 2 is specifically a gear reduction mechanism, a driven wheel of the gear reduction mechanism is arranged in the slide groove 6 and fixedly sleeved on one end of the worm 5; a window is provided in the slide groove 6, and the driven wheel is arranged outside the slide groove 6, so that the driven wheel is engaged with the driving wheel in the slide groove 6 from the window, and the control motor 9 is fixed to the housing by bolts; the driving wheel is sleeved on the rotating shaft of the control motor 9 and connected to the rotating shaft key; one end of the tensioning wheel arm 7 is inserted into the slide groove 6, and the end surface of one end of the tensioning wheel arm 7 inserted into the slide groove 6 A boss is fixedly arranged on the upper surface; one end of the boss is connected to the tension wheel arm 7, and a matching hole is arranged on the end surface of the other end of the boss, which is a screw hole matching the worm 5; the other end of the tension wheel arm 7 extends out of the slide slot 6; a blocking block is arranged at one end of the slide slot 6 extending from the tension wheel arm 7; the tension wheel arm 7 specifically extends out of the slide slot 6 by passing through the blocking block, and the tension wheel 8 is arranged at one end of the tension wheel arm 7 extending out of the slide slot 6; the blocking block can limit the movement of the boss to prevent the boss from sliding out of the slide slot 6; a slider 3 is fixedly arranged in the slide slot 6, and one end of the worm 5 passes through the slider 3 and is connected to the driven wheel and the bearing 1. The spring 4 is sleeved outside the worm 5, and the two ends of the spring 4 are respectively abutted against the boss and the slider 3; one end of the pressure sensor 10 is fixedly connected to the slider 3, and the other end of the pressure sensor 10 is abutted against the left end of the boss; the displacement sensor 11 is arranged in the slide slot 6, one end of the displacement sensor 11 is fixedly connected to the blocking block, and the other end of the displacement sensor 11 is fixedly connected to the boss.

[0070] The embodiment of the present invention adjusts the tension of the conveyor belt of the vehicle engine by monitoring the ambient temperature, movement speed, and engine speed of the vehicle. The tension of the conveyor belt can be adjusted according to the operating conditions of the vehicle. During the operation of the vehicle, the environment in which the vehicle is located, the vehicle operating speed, the engine speed, etc. will cause deformation and stress on the conveyor belt of the vehicle engine. Therefore, it is necessary to adjust it according to the operating conditions of the vehicle to improve the transmission ratio of the conveyor belt or adjust the stress of the conveyor belt. Therefore, compared with the traditional method of setting a fixed tension based on experience, the present invention can improve the transmission efficiency and service life of the conveyor belt.

[0071] In some other embodiments, an electric-controlled automatic tensioning method is also provided, comprising the following steps:

[0072] The temperature sensor collects the temperature of the environment where the vehicle is located to obtain the ambient temperature value;

[0073] The vehicle speed sensor collects the vehicle's running speed and obtains the vehicle speed value;

[0074] The speed sensor collects the speed of the vehicle engine and obtains the speed value;

[0075] The controller generates a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value;

[0076] The electronically controlled tensioner adjusts the pre-tensioning force of the transmission belt of the vehicle engine under the control of the tensioning control signal.

[0077] In some other embodiments, the present invention also provides an engine pulley system, including the above-mentioned electronically controlled automatic tensioning system. Specifically, the electronically controlled tensioner in the electronically controlled automatic tensioning system is used to apply tensioning force to the pulley in the engine pulley system to improve the transmission efficiency of the pulley.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronically controlled automatic tensioning system, characterized in that: include: The temperature sensor is used to collect the temperature of the environment where the vehicle is located and obtain the ambient temperature value; The vehicle speed sensor is used to collect the vehicle's running speed and obtain the vehicle speed value; The speed sensor is used to collect the speed of the vehicle engine and obtain the speed value; a controller, connected to the temperature sensor, the vehicle speed sensor and the rotation speed sensor, and configured to generate a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value; An electronically controlled tensioner is connected to the controller and is used to adjust the pretensioning force of the conveyor belt of the vehicle engine under the control of the tensioning control signal.

2. The electronically controlled automatic tensioning system according to claim 1, characterized in that: The controller is specifically used to preset an initial tension value; calculate a temperature compensation tension value according to the ambient temperature value; calculate a speed compensation tension value according to the vehicle speed value and the speed value; calculate the sum of the initial tension value, the temperature compensation tension value, the vehicle speed compensation tension value and the speed compensation tension value to obtain a preset tension value; The tensioning control signal is generated according to the preset tensioning force value.

3. The electronically controlled automatic tensioning system according to claim 2, characterized in that: The controller is specifically used to, when the ambient temperature value is less than the lower limit of the preset ambient temperature range value, set the temperature compensation tension value to a negative number; when the ambient temperature value is within the preset ambient temperature range value, set the temperature compensation tension value to zero; when the ambient temperature value is greater than the upper limit of the preset ambient temperature range value, set the temperature compensation tension value to a positive number.

4. The electronically controlled automatic tensioning system according to claim 2, characterized in that: The controller is further specifically used to calculate the ratio between the vehicle speed value and the rotation speed value to obtain an actual speed ratio value; when the actual speed ratio value is less than a lower limit value of a preset speed ratio range value, the rotation speed compensation tension value is a positive number; When the actual speed ratio value is within the preset speed ratio range value, the speed compensation tension value is zero; when the actual speed ratio value is greater than the upper limit value of the preset speed ratio range value, the speed compensation tension value is a negative number.

5. The electrically controlled automatic tensioning system according to claim 2, characterized in that: The electronically controlled tensioner comprises: A control motor (9), connected to the controller, and used to control its own rotating shaft to output a first torque according to the tension control signal; A transmission mechanism (2), connected to the rotating shaft of the control motor (9), and used for converting the first torque into a second torque; a worm (5), connected to the transmission mechanism (2), and used for converting the second torque into a third torque; A tensioning wheel arm (7) is matched and connected with the worm (5) and is used to convert the third torque into axial telescopic movement under the guidance of the slide groove (6); wherein the slide groove (6) is arranged on the housing, and the electric-controlled tensioner includes the housing; The tension wheel (8) is fixedly connected to the tension wheel arm (7), abuts against the conveyor belt of the vehicle engine, and is used to move synchronously with the tension wheel arm (7) to apply the pre-tightening force to the conveyor belt of the vehicle engine.

6. The electrically controlled automatic tensioning system according to claim 5, characterized in that: The electronically controlled tensioner further comprises: A pressure sensor (10) is connected to the controller via a wire, one end of which is fixed and the other end of which is connected to the tensioning wheel arm (7), and is used to output a pressure control signal through feedback of the axial movement distance of the tensioning wheel arm (7); The controller is also used to correct the tension control signal according to the pressure control signal to obtain a tension correction control signal; The electronically controlled tensioner is specifically used to adjust the pre-tensioning force of the conveyor belt of the vehicle engine under the control of the tension correction control signal.

7. The electrically controlled automatic tensioning system according to claim 6, characterized in that: The electronically controlled tensioner further comprises: A displacement sensor (11), connected to the controller via a wire, and used for outputting a displacement control signal according to the telescopic distance of the tension wheel arm (7); The controller is also used to control the start and stop of the control motor (9) according to the displacement control signal.

8. The electrically controlled automatic tensioning system according to claim 2, characterized in that: Also includes: A wireless communication module is connected to the controller and is used to transmit the ambient temperature value, the vehicle speed value, the rotation speed value and the preset tension force value to a cloud server for storage via the Internet.

9. A tensioning method applied to the electronically controlled automatic tensioning system according to any one of claims 1 to 8, characterized in that: The steps include: The temperature sensor collects the temperature of the environment where the vehicle is located to obtain the ambient temperature value; The vehicle speed sensor collects the vehicle's running speed and obtains the vehicle speed value; The speed sensor collects the speed of the vehicle engine and obtains the speed value; The controller generates a tensioning control signal according to the ambient temperature value, the vehicle speed value and the rotation speed value; The electronically controlled tensioner adjusts the pre-tensioning force of the transmission belt of the vehicle engine under the control of the tensioning control signal.

10. An engine pulley system, characterized in that: It comprises the electrically controlled automatic tensioning system as claimed in any one of claims 1 to 8.

Images