TWI487859B - Speed ​​Control and Automatic Control System of Stepless Speed ​​Regulator - Google Patents

Description

Speed control wheel pressure automatic increase and decrease control system for stepless speed changer

The invention relates to a flywheel control system of a stepless speed changer, in particular to an innovative system architecture designer capable of automatically controlling the pressure increase and decrease state of the speed control driven wheel side.

Press, the stepless gearbox (CVT) is a new generation of gearbox that provides continuous and stepless speed changes over the entire speed range (from low speed to high speed), resulting in a smooth and smooth ride and more fuel efficient Advantages of the stepless gearbox This technology mainly uses the speed difference between the inner side and the outer side when the power roller (power input disc and power output disc) rotates as its gear ratio.

The stepless speed changer (CVT) is applied to automobiles. Originally, there is a situation in which the output torque is relatively heavy or light, and the state is constantly changing. Therefore, in order to prevent serious sliding phenomenon during heavy load, it is The side pressure of the flywheel (also known as the Puli wheel) is set at a fixed value to adapt to the heavy load state so that the sliding stall problem can be maintained within a minimum range, and this problem does not exist in In the traditional gearbox structure, the conventional gearbox is driven by the cogwheel teeth between the gears, so that it operates in a heavy load state without slipping, and can almost reach the wear-free state under light load. However, in the case of a stepless speed changer, when the car is in a long-time high-speed driving state (for example, driving on a highway), since the stepless speed changer becomes extremely lightly loaded, if a heavy pressure is applied to the flywheel at this time, it is bound to be Leading to extra strong and intense friction, which in turn causes serious energy waste, and at the same time causes a sharp increase in wear between its flywheel and the conveyor belt Serious problems such as greatly shortened service life; conversely, if the stepless speed changer is designed to set the side pressure of the flywheel to a light load condition, the wear between the flywheel and the belt at light load Although it can be reduced to a minimum, when the car is in a state of rapid acceleration (such as overtaking, climbing, etc.), the sliding belt will be severely slipped due to insufficient side pressure of the flywheel. Engine kinetic energy will not be transmitted to the tires efficiently, which will make it difficult for the car to accelerate when it is accelerating, and even cause the car to run out of control and cause accidental danger, and cause serious energy waste problems and shortcomings.

Based on the above description, it can be understood that the conventional stepless speed changer is designed to set the speed of the flywheel side to a fixed value state, regardless of whether the speed of the flywheel side is set to adapt to the heavy load state or light load state. All of them have the shortcomings of taking advantage of this and losing one's advantage, which makes it difficult for the existing car's stepless shifting function to further break through the bottleneck of the jump. It is an important technical issue that the relevant industry will try hard to think about.

In view of this, the inventor has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally obtained the practical invention.

The main object of the present invention is to provide a speed control wheel pressure automatic increase and decrease control system for a stepless speed change machine, and the problem to be solved is to develop a new type of stepless speed changer which is more ideal and practical. The flywheel control system considers the innovation breakthrough for the target; the speed control driven wheel pressure automatic increase and decrease control system is used to control the speed regulation slave set of the automobile stepless speed changer. The side pressure increase and decrease state of the wheel can change the tightness of the cooperation between the speed control driven wheel and the assembled transmission belt; the technical feature of the problem solving of the present invention mainly lies in the automatic increase and decrease control system of the speed regulation driven wheel pressure The utility model comprises: a pressure increasing and decelerating driving mechanism, which is arranged at a corresponding position of the speed regulating driven wheel, wherein the increasing and decreasing pressure driving mechanism comprises a driving part and a receiving part, and the driving part can drive the side pressure increase and decrease state of the control speed regulating driven wheel, The driven part is coupled to the driving part, and the driven part can command the driving part to act according to a preset external control message; a regulating means is used to generate the external control message; thereby, the innovative unique design makes the present invention compare with the prior art In addition, the speed control driven wheel pressure automatic increase and decrease control system can generate an external control message through the control means to control the side pressure increase and decrease state of the speed control driven wheel, and can flexibly adjust the light and heavy load state of the stepless speed change machine. The speed regulation of the driven wheel side pressure, thereby achieving a substantial increase in the transmission speed, stability, acceleration safety and reduction of the heavy duty state of the stepless transmission Speed machine wear and other advantages and progressive and practical.

Please refer to FIGS. 1 to 3, which are preferred embodiments of the automatic controllable wheel pressure increase and decrease control system for the stepless speed changer of the present invention. However, these embodiments are for illustrative purposes only and are not used in patent applications. Limited by the structure; the speed control wheel pressure automatic increase and decrease control system A is used to control the side pressure increase and decrease state of the speed regulation driven wheel 10 provided by the automobile stepless speed change machine, and the speed control driven wheel can be changed. 10 The tightness of the fit between the transport belt 11 and the transport belt 11 is: The automatic pressure increase/decrease control system A includes the following components: An increasing and decreasing driving mechanism 20 is disposed at a corresponding position of the speed regulating driven wheel 10, and the increasing and decreasing driving mechanism 20 includes a driving portion 21 and a driven portion 22, wherein the driving portion 21 can drive the speed regulating driven wheel 10 In the side pressure increase/decrease state, the driven portion 22 is coupled to the driving portion 21, and the driven portion 22 can command the driving portion 21 to act according to a preset external control message 30; a regulating means 40 for generating the external control message 30 .

The drive unit 21 for driving the pressure increase and decrease of the speed control driven wheel 10 side by the pressure increasing/decreasing drive mechanism 20 may be driven by one of air pressure drive, hydraulic drive, electric drive, and electromagnetic force drive. Type.

The control unit 21 of the pressure increasing/decreasing drive mechanism 20 may further include a side pressure that temporarily locks the speed control driven wheel 10 with respect to the control of the pressure increase and decrease state of the speed regulating driven wheel 10 side.

With the above system architecture design, the use of the speed control wheel pressure automatic increase and decrease control system A in actual use is as shown in FIG. 2, and the automobile stepless speed changer includes a speed control driven wheel. 10 and the speed control driving wheel 12 is driven by the transmission belt 11 , and the control object of the speed control wheel pressure automatic increase/decrease control system A of the present invention is limited to the speed regulating driven wheel 10 , This point is specifically defined and limited by the present invention; as shown in FIG. 2, the timing of the automatic control of the automatic pressure increase/decrease control system A is as shown in FIG. 2, when the speed control drive wheel 12 is in a high speed operation state, the transmission belt 11 at the end The two-cone disk surface of the speed-regulating driving wheel 12 is turned into a larger-diameter rewinding state, so that the transmission belt 11 at the end of the speed-regulating driven wheel 10 is driven to a smaller diameter rewinding state to form a large wheeled small wheel. The transmission relationship, this state is the high-speed driving mode of the automobile. In this state, the speed-regulating driven wheel 10 can obtain a certain degree of side pressure by a pressure member 13 (such as a coil spring) originally built therein, but this If the car driver needs to enter If a larger acceleration action is performed in one step (such as overtaking, climbing, etc.), the speed difference between the speed-regulating driven wheel 10 and the conveyor belt 11 may increase the wear and tear due to insufficient clamping force. Through the adjustment of the wheel pressure automatically increase or decrease the setting of the control system A, an auxiliary effect and effect can be obtained, that is, the flywheel The automatic pressure increase/decrease control system A can generate an external control message 30 through a control means 40 (the various types are described later), and the external control message 30 can drive the driven portion 22 of the pressure increasing and decelerating drive mechanism 20 to operate (eg, As shown by the arrow L1, the driven portion 22 interlocks the driving portion 21, thereby increasing the side pressure of the speed regulating driven wheel 10, so that the speed adjusting driven wheel 10 and the conveyor belt 11 can be more tight, thereby improving the The transmission strength, stability and acceleration safety of the segment loader under heavy load conditions.

The control means 40 can be implemented in various ways, which are respectively described as follows: Please refer to FIG. 4, the control means 40 can be achieved through information control, and the information control method is adopted by the vehicle. The torque output value information 41 includes the adjustment information of the throttle and the brake, and the detected value information of the explosion pressure of the engine; and the electronic interpretation means 42 determines whether the torque output value information 41 falls. A predetermined range of values is generated to generate the external control message 30.

Please refer to FIG. 5, the control means 40 can be achieved by a slip tracking information precision tracking and locking method, which is the input shaft and output shaft speed sensing information 43 and the speed ratio of the stepless speed changer. The sensing information 44 is transmitted to an arithmetic processor 45 (such as a computer or a circuit device equivalent to a computer) to calculate the true slip value when the stepless variable speed maneuver can be transmitted, and is set by the arithmetic processor 45. a fixed small slip difference range, according to the small slip difference range to generate the external control message 30, to increase or decrease the side pressure of the control speed regulating follower wheel, and keep the true slip difference value of the feed lock Within the range of the small slip value.

Please refer to FIG. 6 , the control means 40 is achieved by a slip value of the tracking information, which is the input shaft speed sensing information 461 and the output shaft speed sensing information of the stepless speed changer. 462 is transmitted to an operation processor 45B (such as a computer or a circuit device equivalent to a computer), and the operation processor 45B is used to correlate the rotational speed values of the input shaft and the output shaft. For mutual comparison, if the difference between the two changes exceeds the preset range of variation rate, an external control message 30 capable of automatically increasing the pressure of the speed-regulating driven wheel side is generated, and vice versa, the automatic decompression is performed, and the tracking control is repeated accordingly.

Please refer to FIG. 7 , the control means 40 can be achieved by a slip wave information control method, which uses the speed governor to generate a slip between the driven wheel and the transmission belt to generate a specific acoustic wave 471. In the state, the sound sensor 472 is reset to capture the specific sound wave 471, and then the sound wave filter 473 is captured by a sound wave filter 473 to extract the specific sound wave 471 (that is, other sound waves are filtered out), and then a slip value setting device is used. 474 compares the specific acoustic wave 471 with a preset value, and accordingly generates the external control message 30 to increase or decrease the side pressure of the tracking control speed regulating driven wheel.

Referring to FIG. 8 , the control means 40 can also be provided with a manual controller 49 capable of generating the external control message 30 by manual activation by the driver of the vehicle.

Advantages of the invention:

According to the invention, the "automatic increase and decrease control system for the variable speed wheel pressure of the stepless speed change machine" mainly adopts the innovative and unique design of the pressure increasing and decelerating driving mechanism and the control means, so that the present invention is compared with the prior art. In the conventional structure, since the speed control driven wheel pressure automatic increase/decrease control system can generate an external control message through the control means to control the side pressure increase and decrease state of the speed control driven wheel, the flexibility can be adapted to the stepless speed change machine. The light and heavy load state adjusts the pressure of the speed-regulating wheel side, thereby achieving the advantages and practical advancement of greatly increasing the transmission strength, stability, acceleration safety and reducing the wear of the stepless speed change of the heavy-duty transmission of the stepless transmission.

The present invention has been specifically described by the above embodiments, and although the description is by specific terms, the invention cannot be limited thereto. The scope of the invention is subject to change and modification of the spirit and principles of the present invention, and such changes and modifications are intended to be included as described below. In the scope defined by the scope of application for patents.

10‧‧‧Speed follower wheel

11‧‧‧Transport belt

12‧‧‧Speed drive wheel

13‧‧‧ Pressure components

A‧‧‧Advance wheel pressure automatic increase and decrease control system

20‧‧‧Enhanced and reduced pressure drive mechanism

21‧‧‧ Drive Department

22‧‧‧Received Department

30‧‧‧External control messages

40‧‧‧ means of regulation

41‧‧‧ Torque output value information

42‧‧‧Electronic interpretation

43‧‧‧Speed sensing information

44‧‧‧Speed ratio sensing information

45, 45B‧‧‧Operation processor

461‧‧‧Input shaft speed sensing information

462‧‧‧ Output shaft speed sensing information

471‧‧‧Special sound waves

472‧‧‧Sound sensor

473‧‧‧Sonic Filter Picker

474‧‧‧Slip value setting device

49‧‧‧Manual controller

Figure 1: Schematic diagram of the system architecture of the present invention.

Figure 2: Schematic diagram of the operating state of the system of the present invention.

Figure 3: Textual block diagram of the system architecture of the present invention.

Fig. 4 is a diagram showing an embodiment of the control means of the present invention.

Figure 5: The control means of the present invention is an embodiment of the slip tracking precision tracking and locking method.

Fig. 6 is a diagram showing an embodiment of the control method of the present invention, which is a slip value information tracking method.

Figure 7: The control means of the present invention is an embodiment of the slip sound wave information control method.

Figure 8: The control means of the present invention is an embodiment of a manual controller.

10‧‧‧Speed follower wheel

11‧‧‧Transport belt

12‧‧‧Speed drive wheel

13‧‧‧ Pressure components

20‧‧‧Enhanced and reduced pressure drive mechanism

21‧‧‧ Drive Department

22‧‧‧Received Department

30‧‧‧External control messages

40‧‧‧ means of regulation

A‧‧‧Advance wheel pressure automatic increase and decrease control system

Claims (7)

The invention relates to a speed increase and decrease control system for a speed control wheel pressure of a stepless speed change machine, wherein the speed increase and decrease control system of the speed control driven wheel pressure is used to control the side pressure increase and decrease state of the speed control driven wheel provided by the automobile stepless speed change machine. , and can change the tightness between the speed control driven wheel and the assembled transmission belt; the speed control automatic pressure increase and decrease control system includes: a pressure increasing and decreasing driving mechanism, corresponding to the speed regulating driven wheel The driving unit and the driven unit are configured to drive the side pressure increase and decrease state of the speed control driven wheel, and the driven part is coupled to the driving part, and the driven part can be according to the preset one. The external control message instructs the driver to act; a control means for generating the external control message. According to the patent application scope of claim 1, the variable speed wheel pressure automatic increase and decrease control system of the stepless speed change machine, wherein the driving unit of the pressure increasing and decreasing driving mechanism drives the pressure increasing and decreasing state of the speed regulating driven wheel side It adopts one of the driving modes of air pressure driving, hydraulic driving, electric driving, and electromagnetic force driving. The automatic controllable wheel pressure increase/decrease control system of the stepless speed change machine according to the first or second aspect of the patent application, wherein the driving part of the increase/decrease driving mechanism controls the pressure increase and decrease state of the speed regulating driven wheel side, It further includes temporarily locking the side pressure of the speed governing driven wheel. According to the scope of claim 1, the automatic speed increase and decrease control system of the variable speed wheel pressure of the stepless speed change machine, wherein the control means is achieved through the information control mode, and the information control mode is to take the existing torque output of the automobile. Value information, the torque output value information includes throttle and brake Adjusting the information of the information and the detected value of the engine explosion pressure; and determining whether the torque output value information falls within a preset value range by an electronic interpretation means to generate the external control message. According to the patent application scope, the automatic speed increase and decrease control system of the variable speed wheel pressure of the stepless speed change machine is as follows, wherein the control means is achieved by a slip tracking information precision tracking and locking method, and the method will be non-segmented. The input shaft and output shaft speed sensing information and the speed ratio sensing information of the transmission are transmitted to an operation processor to calculate a true slip value when the stepless speed maneuver can be transmitted, and the operation processor sets a a fixed small slip difference range, according to the small slip difference range to generate the external control message, to increase or decrease the side pressure of the control speed regulating driven wheel, and keep the true slip difference value of the feedback lock to remain in the Within the range of small slip values. According to the patent application scope of claim 1, the automatic speed increase and decrease control system of the variable speed wheel pressure of the stepless speed change machine, wherein the control means is achieved by a slip value of the slip value tracking method, the system will be The input shaft speed sensing information and the output shaft speed sensing information of the segment transmission are transmitted to an arithmetic processor, and the operation processor compares the rotational speed values of the input shaft and the output shaft with each other, for example, the difference between the two changes exceeds the pre-predetermined When the range of the variation rate is set, an external control message capable of automatically increasing the pressure of the speed-regulating driven wheel side is generated, and vice versa, the pressure is automatically decompressed, and the tracking control is repeated accordingly. According to the patent application scope of claim 1, the variable speed wheel pressure automatic increase and decrease control system of the stepless speed change machine, wherein the control means is achieved by a slip sound wave information control method, and the method uses the speed control driven wheel When a slip occurs between the belt and the belt, a state of specific sound waves is generated, and a sound sensor is set to capture the specific sound wave, and then through a sound wave. Filtering the extractor to capture the specific sound wave, and comparing the specific sound wave with a preset value by a slip value setting device, thereby generating the external control message to increase or decrease the side of the tracking control speed control driven wheel pressure.