CN104728382A - Stepless engine speed change system - Google Patents

Abstract

The invention provides an engine continuously variable speed system, which includes an output driving wheel, a variable distance connecting rod, a transmission support seat, a variable distance movable seat and an output one-way device. One end of the variable distance connecting rod is eccentrically hinged on the output driving wheel, and the other One end is hinged to the pitch-changing movable seat, which is movably arranged on the speed-changing support seat, which can swing around the swing axis, and the output one-way device is connected to the speed-changing support seat. Applying the gearless, stepless, torque-changing, torque-changing, and speed-changing system of the present invention to the thermal power engine, the power can be increased by more than 15% on the basis of the original engine power, and the fuel consumption can be reduced by more than 20%. The power transmission structure of the present invention is suitable for Single-cylinder and engines with fewer cylinders, and the structure of the transmission system is suitable for all thermal power engines.

Description

Engine continuously variable transmission system

technical field

The invention relates to the field of thermal power engines, in particular to a continuously variable transmission system for engines.

Background technique

With the development of the world's vehicles and agricultural machinery, thermal power engines have spread all over the world. Especially in recent years, with the development of my country's automobile industry, family cars have gradually penetrated into the work and life of ordinary people. It can be said that all walks of life in modern society are inseparable from thermal power engines. We know that what the existing engine transmission system generally adopts is to achieve the purpose of variable torque, variable torque, and variable speed by changing gears. Of course, there is also an automatic transmission system in the form of a CVT. With normal manual gear transmissions, we often hear that my transmission is broken again. As for the existing automatic transmission, it is characterized by complex structure, high price, low transmission efficiency and high fuel consumption.

Contents of the invention

The object of the present invention is to provide an engine continuously variable transmission system to solve the above technical problems.

The present invention is achieved like this:

A continuously variable transmission system for an engine, comprising an output drive wheel, a variable distance connecting rod, a transmission support seat, a variable distance movable seat and an output one-way device, one end of the variable distance connecting rod is eccentrically hinged on the output driving wheel, and the other end is The distance movable seat and the variable pitch movable seat are movably arranged on the speed change support seat, the speed change support seat can swing around the swing axis, and the output one-way device is connected to the speed change support seat.

In the infinitely variable engine speed change system of the present invention, the output driving wheel, the variable distance connecting rod and the speed change support seat are connected to each other to form a crank rocker mechanism. The length of the rocker of the crank-rocker mechanism connects the output drive wheel with the engine crankshaft when in use, and the output drive wheel is driven to rotate through the engine crankshaft, and the output drive wheel is driven by a pitch-variable connecting rod eccentrically hinged on the output drive wheel. The distance movable seat reciprocates, and the variable distance movable seat drives the variable speed support seat to swing around the swing axis, and the variable speed support seat outputs power to the walking system through the output one-way device connected thereto.

When it is necessary to change the speed and torque, move the variable pitch movable seat along the variable speed support seat, change the distance from the variable pitch movable seat to the swing axis of the variable speed support seat, thereby changing the force action point of the pitch variable movable seat on the variable speed support seat to the swing axis distance to achieve the purpose of variable speed and torque.

The infinitely variable engine speed change system of the present invention cleverly utilizes the principle of the crank rocker mechanism and the output one-way device to output the power of the engine, and shifts the speed by moving the variable distance movable seat without changing gears, and achieves a real infinite speed change with a simple structure. The purpose of tooth, stepless, torque conversion and speed change.

The engine continuously variable transmission system of the present invention further includes a primary fixed gear for connecting the output driving wheel and the engine crankshaft, and the transmission ratio of the primary fixed gear is 2:1.

The continuously variable engine transmission system of the present invention also includes a power input one-way device, and the power input one-way device connects the traveling system and the engine crankshaft.

In the present invention, one working unit (four strokes, crankshaft rotates two circles) of the engine is converted into four strokes and the output driving wheel only rotates one circle through the one-stage fixed gear, so the power stroke accounts for four quarters of this circle now. One-third, that is, to rotate 90 degrees, the present invention cleverly outputs the power of the power stroke through an output one-way device, and the remaining three-quarters of the circle (three strokes: intake, compression, exhaust) rely on a transmission Into the one-way device to rotate the inertia generated by the mechanical equipment and the vehicle when walking. Since the power is transmitted through the one-way device, most of the resistance generated by the three power-consuming strokes at this time is consumed by the inertia generated by the vehicle or mechanical equipment. Make the power stroke can fully output the generated power. For traditional single-cylinder and engines with fewer cylinders, before the power is transmitted to the output shaft, the power generated by the power stroke must first overcome the resistance generated by the remaining three strokes, and the remaining power can be output to the output shaft and the vehicle. Reduced utilization of engine power.

The continuously variable engine transmission system of the present invention also includes an active hydraulic cylinder and a variable pitch piston. The pistons form a hydraulic connection.

The pitch-variable movable seat is moved by the hydraulic cylinder piston to realize the increase and decrease of torque transmission, the structure is simple, the precision is high, and the purpose of stepless gearless pitch variable speed can be achieved.

The infinitely variable engine transmission system of the present invention is also provided with a pitch-variable compression spring, one end of which is supported on the pitch-variable movable seat, and the other end is supported on the variable-speed supporting seat.

The variable distance movable seat is moved by the hydraulic cylinder piston to realize the increase and decrease of torque transmission, and the variable distance compression spring is used to make the variable distance piston return when the active piston in the active hydraulic cylinder retracts (when the torque is increased). The function of returning the top of the transmission support seat. The variable speed support seat then plays the role of combining all parts, so that the whole power output system only outputs the power of the power stroke.

The continuously variable transmission system of the engine of the present invention also includes an output driven shaft, and the output one-way device is connected with the transmission supporting base through the output driven shaft.

In the continuously variable engine transmission system of the present invention, the active hydraulic cylinder is arranged in the output driven shaft.

The active hydraulic cylinder is used to drive the variable-pitch piston arranged in the transmission supporting base to realize torque-variable speed change. The active hydraulic cylinder is arranged in the output driven shaft, and the structure is compact, which can reduce the engine stepless transmission system of the present invention. The installation space on the thermal power terminal and the convenient setting of the variable speed operating mechanism.

In the continuously variable engine transmission system of the present invention, the output one-way device is a precision one-way device.

In the continuously variable engine transmission system of the present invention, the power input one-way device is a precision one-way device.

The precision one-way device has high transmission accuracy and low energy loss. By designing the output one-way device and the power input one-way device as precision one-way devices, the efficiency of the continuously variable engine transmission system of the present invention can be further improved.

In the continuously variable engine transmission system of the present invention, the output unidirectional device is connected with the traveling system through a gear transmission device.

The engine infinitely variable speed system of the present invention can separate the power stroke of the four-stroke engine from the intake, compression, and exhaust of the other three strokes that consume power, so that the power stroke of the engine can fully output the power generated by the work to the vehicle or mechanical equipment . The remaining three power-consuming strokes can transmit the inertial force generated by the vehicle or mechanical equipment to the heat engine part of the engine through a one-way device, which is used to drive the three strokes of intake, compression, and exhaust to complete the action.

Experiments have shown that applying the gearless, stepless, variable torque, variable torque, and variable speed system of the present invention to the thermal power engine, the power can be increased by more than 15% on the basis of the original engine power, and the fuel consumption can be reduced by more than 20%. The transfer structure is suitable for single-cylinder and engines with fewer cylinders, while the transmission system structure is suitable for all thermal power engines.

In the present invention, a power transmission system can be provided to drive the intake, compression, and exhaust strokes, or the power transmission system can not be provided, and the drive can be driven by the inertia of the crankshaft.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the engine continuously variable transmission system of the first embodiment of the present invention;

Fig. 2 is the engine continuously variable transmission system of the second embodiment of the present invention;

Fig. 3 is the active hydraulic cylinder of the embodiment of the present invention.

Summary of reference numerals: engine 101, speed change support seat 102, variable distance movable seat 103, variable distance connecting rod 105, output driving shaft 107, output driving wheel 108, output one-way device 110, power input one-way device 112, drive Hydraulic cylinder 113 , variable pitch piston 106 , variable pitch compression spring 104 , first hydraulic pipeline 121 , second hydraulic pipeline 122 , active piston 114 .

Detailed ways

With the development of the world's vehicles and agricultural machinery, thermal power engines have spread all over the world. Especially in recent years, with the development of my country's automobile industry, family cars have gradually penetrated into the work and life of ordinary people. It can be said that all walks of life in modern society are inseparable from thermal power engines. We know that what the existing engine transmission system generally adopts is to achieve the purpose of variable torque, variable torque, and variable speed by changing gears. Of course, there is also an automatic transmission system in the form of a CVT. With normal manual gear transmissions, we often hear that my transmission is broken again. As for the existing automatic transmission, it is characterized by complex structure, high price, low transmission efficiency and high fuel consumption.

In view of this, the designer of the present invention has designed a kind of engine infinitely variable transmission system, comprises output driving wheel, pitch-changing connecting rod, speed-changing supporting seat, changing pitch movable seat and output one-way device, and one end of pitch-changing connecting rod is eccentrically hinged on On the output drive wheel, the other end is hinged to the variable distance movable seat, which is movably arranged on the speed change support seat, which can swing around the swing axis, and the output one-way device is connected to the speed change support seat.

The engine continuously variable transmission system of the present invention connects the output driving wheel with the engine crankshaft when in use, and drives the output driving wheel to rotate through the engine crankshaft, and the output driving wheel drives the variable distance movable seat through the variable distance connecting rod eccentrically hinged on the output driving wheel In reciprocating motion, the pitch-variable movable seat drives the variable-speed supporting seat to swing around the swing axis, and the variable-speed supporting seat outputs power to the walking system through the output one-way device connected thereto.

Experiments show that applying the gearless, stepless, variable torque, variable torque, and variable speed system of the present invention to the thermal power engine, the power can be increased by more than 15% on the basis of the original engine power, and the fuel consumption can be reduced by more than 20%. Whether it is to add an automatic variable speed drive device such as an auxiliary centrifugal force mechanism or an electronic mechanism, or to set a manual transmission device, it can greatly improve the utilization rate of the fuel calorific value, simplify and facilitate the user's operation.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. The conversion ratio can be 2:1 or 3:1. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Embodiment 1, with reference to Fig. 1

The engine continuously variable transmission system includes an output driving wheel 108, a variable distance connecting rod 105, a transmission support seat 102, a variable distance movable seat 103 and an output one-way device 110. One end of the variable distance connecting rod 105 is eccentrically hinged on the output driving wheel, and the other One end is hinged to the pitch-changing movable seat 103, which is movably arranged on the speed-changing support seat 102, which can swing around the swing axis, and the output one-way device 110 is connected to the speed-changing support seat 102.

The output driving wheel 108 is connected with the crankshaft through the output driving shaft 107, and the output driving wheel 108 is fixedly connected with the output driving shaft 107, which can be welded, screwed, pressed, etc.

In the engine continuously variable transmission system, the output driving wheel 108 may also be directly fixed on the crankshaft of the engine 101 .

The movement of the variable pitch movable seat 103 on the variable speed support seat 102 can be realized by various known mechanical, hydraulic, and electric methods, such as rack and pinion mechanisms, worm gear mechanisms, servo motors, hydraulic cylinder pistons, etc. .

Preferably, an output driven shaft 109 is also provided, and the output one-way device 110 is connected with the transmission support base 102 through the output driven shaft. It is also possible to directly connect the output one-way device 110 to the transmission support base 102 without an output driven shaft, for example, by welding, riveting, screwing and the like.

The working mode of the continuously variable engine transmission system of the present invention is as follows: start the engine, drive the output drive wheel 108 to rotate through the engine crankshaft, and the output drive wheel 108 drives the variable distance movable seat through the variable distance connecting rod 105 eccentrically hinged on the output drive wheel 108 103 reciprocates, the variable distance movable seat 103 drives the speed change support seat 102 to swing around the swing axis, and the speed change support seat 102 outputs power to the walking system through the output one-way device 110 connected thereto.

When it is necessary to change the speed and torque, move the distance variable movable seat 103 along the variable speed supporting base 102, change the distance from the variable pitch movable seat 103 to the swing axis of the variable speed supporting seat 102, thereby changing the force of the variable pitch movable seat 103 on the variable speed supporting seat 102 The distance from the point of action to the swing axis to achieve the purpose of variable speed and torque.

The engine infinitely variable transmission system of the present invention cleverly utilizes the principle of the crank rocker and the output one-way device 110 to output the power of the engine, and shifts the speed by moving the pitch-variable movable seat 103 without changing gears, and achieves real speed change with a simple structure. The purpose of gearless, stepless, torque conversion and speed change.

The engine transmission is provided with a primary fixed gear for connecting the output driving wheel 108 and the engine crankshaft, and the transmission ratio of the primary fixed gear is 2:1. Thus, one working unit of the engine (four strokes, two revolutions of the crankshaft) can be converted into four strokes and the output driving wheel 108 only rotates one revolution.

The engine continuously variable transmission system also includes a power input one-way device 112, which connects the traveling system and the engine crankshaft. Through the power input one-way device 112, the inertial force generated by the vehicle or mechanical equipment is transmitted to the heat engine part of the engine during the three power-consuming strokes, and is used to drive the three strokes of intake, compression, and exhaust to complete the action.

The output one-way device 110 and the power input one-way device 112 among the present invention can use existing various roller type one-way devices, wedge type one-way device, and its structure, principle and the mode method of use all are all already. Known, will not be described in detail here.

In the present invention, one working unit of the engine 101 is converted into four strokes through the first-stage fixed gear, and the output driving wheel 108 only rotates once, so the power stroke accounts for a quarter of this circle at this time, that is, the rotation 90 degrees, the present invention cleverly outputs the power of the power stroke through an output one-way device 110, and the remaining three-quarters of the circle (three strokes: intake, compression, and exhaust) rely on an incoming one-way device to transfer the mechanical equipment And the inertial rotation generated when the vehicle is walking, because the power is transmitted through the one-way device, most of the resistance generated by the three power-consuming strokes at this time is consumed by the inertia generated by the vehicle or mechanical equipment, so that the power stroke can be fully generated. power output. For traditional single-cylinder and engines with fewer cylinders, before the power is transmitted to the output shaft, the power generated by the power stroke must first overcome the resistance generated by the remaining three strokes, and the remaining power can be output to the output shaft and the vehicle. Reduced utilization of engine power.

Embodiment 2, refer to Figure 2-3

The CVT system of this embodiment has the same basic structure, realization principle and technical effect as that of Embodiment 1. For a brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding content in Embodiment 1.

The engine continuously variable transmission system of this embodiment provides a hydraulic system for torque-variable transmission, the hydraulic system includes an active hydraulic cylinder 113 and a distance-changing piston 106, and the distance-changing piston is arranged in the transmission support seat 102 and is connected to the The pitch-changing movable seat 103 is fixedly connected, and the active hydraulic cylinder and the pitch-changing piston form a hydraulic connection.

Also be provided with variable pitch compression spring 104, one end of this variable pitch compression spring is supported on the pitch variable movable seat 103, and the other end is supported on the speed change support seat 102.

Move the pitch-changing movable seat 103 by the hydraulic cylinder piston to realize increasing and reducing torque transmission, and the pitch-changing compression spring 104 plays a role in making the pitch change when the active piston in the active hydraulic cylinder 113 retracts (when the torque becomes larger). Piston 106 gets back to the effect of shift support seat 102 top return. And the speed change supporting base 102 then plays the effect of combining all components together, so that the whole power output system only outputs the power of the power stroke.

In the continuously variable transmission system of the engine, preferably, the active hydraulic cylinder 113 is arranged in the output driven shaft.

In order to realize the hydraulic connection between the active hydraulic cylinder 113 and the variable pitch piston 106, the active hydraulic cylinder 113 is provided with a first hydraulic pipeline 121, one end of the first hydraulic pipeline communicates with the hydraulic oil chamber in the active hydraulic cylinder 113, and the other end It is communicated with the second hydraulic pipeline 122 arranged in the transmission supporting seat 102 , and the other end of the second hydraulic pipeline is communicated with the distance-changing piston 106 .

When gear shifting is required, the active piston 114 that drives the active hydraulic cylinder 113 moves forward or backward, and the pitch-changing piston 106 can be driven to move downward or upward through the first hydraulic pipeline 121 and the second hydraulic pipeline 122 to realize Torque variable speed.

The active hydraulic cylinder 113 is used to drive the pitch-changing piston 106 arranged in the speed change support seat 102, so as to realize variable torque and speed change. The installation space of the continuously variable transmission system on the car.

In the continuously variable transmission system of the engine, the output one-way device 110 is a precision one-way device.

In the continuously variable transmission system of the engine, the power input one-way device 112 is a precision one-way device.

Precision checks are high precision, precision manufactured checks.

By designing the output one-way device 110 and the power input one-way device 112 as precision one-way devices, precision can be improved and energy consumption can be further reduced.

In the continuously variable transmission system of the engine, the connection between the output one-way device 110 and the walking system and the connection between the walking system and the power input one-way device 112 can be through a gear transmission, a belt transmission, a chain transmission or other feasible methods. A transmission device is realized.

The engine infinitely variable speed system of the present invention can separate the power stroke of the four-stroke engine from the intake, compression, and exhaust of the other three strokes that consume power, so that the power stroke of the engine can fully output the power generated by the work to the vehicle or mechanical equipment . The remaining three power-consuming strokes can transmit the inertial force generated by the vehicle or mechanical equipment to the heat engine part of the engine through a one-way device, which is used to drive the three strokes of intake, compression, and exhaust to complete the action.

Experiments have shown that applying the gearless, stepless, variable torque, variable torque, and variable speed system of the present invention to the thermal power engine, the power can be increased by more than 15% on the basis of the original engine power, and the fuel consumption can be reduced by more than 20%. The transfer structure is suitable for single-cylinder and engines with fewer cylinders, while the transmission system structure is suitable for all thermal power engines.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a motor stepless speed-changing system, it is characterized in that, comprise and export driving wheel, displacement connecting rod, speed change supporting base, displacement active base and export one-way element, displacement connecting rod one end is hinged on prejudicially and exports on driving wheel, the other end is articulated with displacement active base, displacement active base is located on speed change supporting base movably, and speed change supporting base swingingly can be arranged around axis of oscillation, exports one-way element and is connected to speed change supporting base.

2. motor stepless speed-changing system according to claim 1, is characterized in that, also comprises the one-level fixed gear for connecting described output driving wheel and engine crankshaft, and the velocity ratio of this one-level fixed gear is 2:1.

3. motor stepless speed-changing system according to claim 1, is characterized in that, also comprises power and imports one-way element into, and this power imports one-way element connected row walking system and engine crankshaft into.

4. according to the motor stepless speed-changing system in claim 1-3 described in any one, it is characterized in that, also comprise initiatively oil hydraulic cylinder and displacement piston, this displacement piston to be arranged in described speed change supporting base and to be fixedly connected with described displacement active base, and initiatively oil hydraulic cylinder and displacement piston form hydraulic connecting.

5. motor stepless speed-changing system according to claim 4, is characterized in that, is also provided with displacement stage clip, and this displacement stage clip one end is supported in displacement active base, and the other end is supported on speed change supporting base.

6. motor stepless speed-changing system according to claim 4, is characterized in that, also comprises output driven shaft, and described output one-way element is connected with speed change supporting base by exporting driven shaft.

7. motor stepless speed-changing system according to claim 6, is characterized in that, described active oil hydraulic cylinder is located in described output driven shaft.

8. motor stepless speed-changing system according to claim 1, is characterized in that, described output one-way element is accurate one-way element.

9. motor stepless speed-changing system according to claim 3, is characterized in that, it is accurate one-way element that described power imports one-way element into.

10. motor stepless speed-changing system according to claim 1, is characterized in that, described output one-way element is connected with running gear by gear drive.