CN213620125U

CN213620125U - Series-parallel engine

Info

Publication number: CN213620125U
Application number: CN202022499828.XU
Authority: CN
Inventors: 冯伟健; 代东辉; 曾观冬
Original assignee: Jiangmen Dachangjiang Group Co Ltd
Current assignee: Jiangmen Dachangjiang Group Co Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-07-06
Anticipated expiration: 2030-11-02

Abstract

The utility model relates to the technical field of engines, a series-parallel engine is disclosed, include: the engine comprises an engine main body, an internal combustion engine, a driving shaft, a driven shaft, a transmission belt, a clutch and a motor; the internal combustion engine is arranged in the engine main body; the driving shaft is arranged in the engine main body and is connected with a power output end of the internal combustion engine; the driven shaft is arranged in the engine main body and is opposite to the driving shaft; the transmission belt is connected with the driving shaft and the driven shaft; the clutch is arranged on one side of the driven shaft and used for controlling the transmission belt to be separated from or connected with the driven shaft; and the power output end of the motor is connected with the driven shaft and is used for driving the driven shaft to rotate. The utility model adopts the transmission belt to replace the traditional CVT speed changing system, thereby improving the transmission efficiency and reducing the production cost; meanwhile, the structure is simpler, the size is smaller, and the requirements of a power system of the motorcycle are met.

Description

Series-parallel engine

Technical Field

The utility model relates to the technical field of engines, especially, relate to a series-parallel engine.

Background

An internal combustion engine is a mechanism that converts the thermal energy of combustion of a fuel and air mixture into mechanical energy. Through the development of many years, the problem of emission and oil consumption of a pure internal combustion engine is gradually highlighted. The hybrid power of the internal combustion engine and the motor greatly reduces the emission and the oil consumption, and is developed vigorously in the automobile industry. However, in the motorcycle industry, the complex hybrid power structure used in the automobile cannot be directly used on the motorcycle due to the limitation of the volume space and the cost of the motorcycle. Therefore, a hybrid power system developed based on a motorcycle is required to be small in size, simple in structure and low in cost, but hybrid power belongs to new things for motorcycles, and the structural form is endless. In the motorcycle industry, practical application and patents are mostly independent serial connection and parallel connection modes, the scheme of series-parallel hybrid power is rare, and the conventional parallel connection and series-parallel hybrid power is also provided with a power speed change system and has a complex structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the series-parallel engine is provided, a transmission belt is adopted to replace a traditional CVT speed change system, the transmission efficiency is improved, and the production cost is reduced; meanwhile, the structure is simpler, the size of the engine is correspondingly reduced, and the requirement of a power system of the motorcycle is met.

In order to achieve the above object, the present invention provides a series-parallel engine, including: the device comprises an engine main body, an internal combustion engine, a driving shaft, a driven shaft, a transmission belt, a clutch, a motor and a battery pack; the internal combustion engine is arranged in the engine main body;

the driving shaft is arranged in the engine main body and is connected with a power output end of the internal combustion engine;

the driven shaft is arranged in the engine main body and is opposite to the driving shaft;

the transmission belt is connected with the driving shaft and the driven shaft;

the clutch is arranged on one side of the driven shaft and used for controlling the transmission belt to be separated from or connected with the driven shaft;

the power output end of the motor is connected with the driven shaft and is used for driving the driven shaft to rotate;

the battery pack is connected with the motor and used for providing electric energy for the motor.

In some embodiments, the engine further comprises an ISG motor, which is disposed on one side of the driving shaft and connected to the internal combustion engine, for starting the internal combustion engine.

In some embodiments, the battery pack is connected to the ISG motor through a conversion module, and the conversion module is configured to convert mechanical energy generated by the ISG motor into electrical energy and store the electrical energy in the battery pack.

In some embodiments, further comprising an output shaft, the output shaft being connected to the driven shaft.

In some embodiments, a driving gear is arranged on the driving shaft, a driven gear is arranged on the driven shaft, and the transmission belt is a toothed belt which is meshed with the driving gear and the driven gear respectively.

A series-parallel engine control method, based on the series-parallel engine as described in any one of the above, the control method comprising: acquiring the current running rotating speed of the engine, controlling whether the clutch is coupled or not according to the running rotating speed, and controlling the internal combustion engine and the motor to run simultaneously under the condition of coupling of the clutch; and under the condition of clutch decoupling, the motor is controlled to operate independently.

In some embodiments, the engine comprises a battery assembly and an ISG motor, the battery assembly is electrically connected with the ISG motor, the ISG motor is connected with the internal combustion engine, the ISG motor is controlled to start the internal combustion engine under the condition that the clutch is decoupled, and the internal combustion engine charges the battery assembly through the ISG motor.

In some embodiments, the internal combustion engine and the motor are controlled to operate together under the condition of clutch coupling, and the ISG motor is controlled to charge the battery assembly.

In some embodiments, the electric quantity information of the battery assembly is acquired, the internal combustion engine is controlled to operate alone in a clutch coupling state when the electric power of the battery assembly is insufficient, and the motor and the ISG motor are controlled to charge the battery assembly together.

In some embodiments, the output shaft is connected with the driven shaft, and when the clutch is decoupled, the engine is in a speed reduction state, and the output shaft drives the driven shaft to rotate, so as to drive and control the motor to charge the battery assembly.

Compared with the prior art, the utility model provides a series-parallel engine, its beneficial effect lies in: the transmission belt is used for replacing a traditional CVT (continuously variable transmission) system, the CVT transmission efficiency is usually only 75-80%, the transmission efficiency of the transmission belt can reach 95%, the transmission efficiency is obviously improved, the cost is reduced, meanwhile, the oil consumption and the emission can be reduced by applying the engine, the use load of the engine can be reduced, the use working condition of the internal combustion engine is optimized, and the oil consumption and the emission of the hybrid power assembly are greatly reduced compared with those of a pure internal combustion engine; meanwhile, the power of the engine is improved, and the two powers are superposed, so that the output power of the rear wheel is improved; compared with the existing hybrid power system, the engine has smaller volume and simpler structure, and is more suitable for being implemented on a motorcycle.

Drawings

FIG. 1 is a schematic diagram of an engine according to the present invention;

fig. 2 is a sectional view of the engine structure of the present invention.

In the figure, 1, an engine body; 2. an internal combustion engine; 3. a drive shaft; 4. a driven shaft; 5. a transmission belt; 6. a clutch; 7. a motor; 8. an ISG motor; 9. an output shaft; 10. a driving gear; 11. a driven gear.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 and 2, a series-parallel engine according to some embodiments of the present application includes: the device comprises an engine main body 1, an internal combustion engine 2, a driving shaft 3, a driven shaft 4, a transmission belt 5, a clutch 6, a motor 7 and a battery pack; the internal combustion engine 2 is provided in the engine main body 1; the driving shaft 3 is arranged in the engine main body 1 and is connected with a power output end of the internal combustion engine 2; the driven shaft 4 is arranged in the engine main body 1 and is opposite to the driving shaft 3; the transmission belt 5 is connected with the driving shaft 3 and the driven shaft 4; the clutch 6 is arranged on one side of the driven shaft 4 and used for controlling the transmission belt 5 to be separated from or connected with the driven shaft 4; the power output end of the motor 7 is connected with the driven shaft 4 and is used for driving the driven shaft 4 to rotate; the battery pack is connected with the motor and used for providing electric energy for the motor.

Based on the scheme, the transmission belt 5 replaces a CVT speed change system which is configured conventionally, and the transmission belt 5 is used as a transmission structure between the driving shaft 3 and the transmission shaft 4, so that the transmission efficiency between the shafts is improved, and meanwhile, the cost is reduced. The clutch 6 is used for controlling the transmission belt 5 to be separated from or connected with the driven shaft 4, so that switching of different driving modes is realized, when the transmission belt 5 is separated from the driven shaft 4, the transmission connection between the driving shaft 3 and the driven shaft 4 is disconnected, and the driving mode is only driven by the motor 7, namely, a pure electric driving mode is realized; when the transmission belt 5 is connected with the driven shaft 4, the transmission connection between the driving shaft 3 and the driven shaft 4 is restored, and the driving mode is changed to the simultaneous driving of the internal combustion engine 2 and the motor 7.

In some embodiments of the present application, the present application further comprises an ISG motor 8, wherein the ISG motor 8 is disposed on one side of the driving shaft 3, and is connected to the internal combustion engine 2, and is used for starting the internal combustion engine 2.

In some embodiments of the present application, the present application further comprises an output shaft 9, and the output shaft 9 is connected with the driven shaft 4.

In some embodiments of the present application, a driving gear 10 is disposed on the driving shaft 3, a driven gear 11 is disposed on the driven shaft 4, and the transmission belt 5 is a toothed belt engaged with the driving gear 10 and the driven gear 11, respectively.

In some embodiments of the present application, the clutch 6 is an electronically controlled clutch or a centrifugal clutch, and whether the clutch is coupled or not is controlled by detecting the running speed of the engine; the centrifugal automatic clutch is adopted, the cost is low, the clutch is decoupled in idling, and when the running rotating speed of the engine rises to a certain value, such as more than 3000rpm, the clutch is automatically coupled.

Based on the series-parallel engine, a control method is provided, the current running rotating speed of the engine is obtained, whether the clutch is coupled or not is controlled according to the running rotating speed, when the running rotating speed of the engine exceeds a set value, the clutch 6 is coupled, and the internal combustion engine 2 and the motor 7 are controlled to run simultaneously under the condition that the clutch is coupled; when the running rotating speed of the engine is reduced to a set value, the clutch 6 is decoupled, and the motor 7 is controlled to run independently under the condition of decoupling of the clutch.

The operating modes of the engine include: under the decoupling condition of the clutch, the motor 7 operates to drive the driven shaft 4 to rotate, and then the output is realized through the output shaft 9, so that the pure electric drive mode is realized.

Under the clutch decoupling condition, motor 7 operates, drives driven shaft 4 and rotates, then exports through output shaft 9, realizes pure electric drive, controls ISG motor 8 simultaneously and starts internal-combustion engine 2, and internal-combustion engine 2 charges for battery pack through ISG motor 8, realizes serial-type hybrid mode.

Under the condition of clutch coupling, the internal combustion engine 2 and the motor 7 run and drive simultaneously, and a parallel hybrid mode is realized.

Under the condition of clutch coupling, the internal combustion engine 2 and the motor 7 are controlled to operate together, the ISG motor 8 is controlled to charge the battery assembly, and a series-parallel (series-parallel and parallel-parallel) hybrid mode is realized.

And acquiring the electric quantity information of the battery assembly, controlling the internal combustion engine 2 to operate independently in a clutch coupling state when the electric power of the battery assembly is insufficient, and controlling the motor 7 and the ISG motor 8 to charge the battery assembly together in a pure internal combustion engine driving mode to realize quick charging.

When the vehicle is decelerated and slides, under the condition that the clutch is decoupled, the rear wheel drives the motor 7 to charge the battery assembly, and the energy recovery mode is adopted.

In some embodiments, the vehicle speed is below a certain value, such as 40km/h, pure electric drive is adopted, the internal combustion engine is not started to realize 0 emission, or the internal combustion engine is started to be charged, and the internal combustion engine is charged at the highest working condition point of thermal efficiency in a clutch decoupling state.

In the above scheme, a conversion module is arranged between the motor 7 and the battery assembly, and mechanical energy generated by the motor 7 is converted into electric energy to be stored in the battery assembly, and the same is true between the ISG motor 8 and the battery assembly.

In conclusion, the motorcycle using the engine has the advantages that the emission and the oil consumption are reduced, the hybrid power assembly reduces the use coincidence of the engine, and the use working condition of the internal combustion engine is optimized; the engine has simpler structure and smaller volume, and is suitable for application on motorcycles; meanwhile, the method is also suitable for the fields of automobiles and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A series-parallel engine, comprising:

an engine main body;

an internal combustion engine provided in the engine main body;

the transmission belt is connected with the driving shaft and the driven shaft;

the clutch is arranged on one side of the driven shaft and used for controlling the driving belt to be separated from or connected with the driven shaft;

and the battery component is connected with the motor and is used for providing electric energy for the motor.

2. The series-parallel connection type engine according to claim 1, further comprising an ISG motor provided on one side of the driving shaft and connected to the internal combustion engine for starting the internal combustion engine.

3. The series-parallel engine of claim 2, further comprising a conversion module, wherein the battery assembly is connected to the ISG motor through the conversion module, and the conversion module is configured to convert mechanical energy generated by the ISG motor into electrical energy to be stored in the battery assembly.

4. The series-parallel engine of claim 1, further comprising an output shaft coupled to the driven shaft.

5. The series-parallel engine according to claim 1, wherein a driving gear is provided on the driving shaft, a driven gear is provided on the driven shaft, and the transmission belt is a toothed belt engaged with the driving gear and the driven gear, respectively.

6. The series-parallel engine of claim 1, wherein the clutch is of electronically controlled or centrifugal construction.