CN215890212U

CN215890212U - Dual-motor control system for opposed-piston two-stroke engine

Info

Publication number: CN215890212U
Application number: CN202121606701.1U
Authority: CN
Inventors: 崔凌; 邓爽
Original assignee: Shenzhen Sanqing New Energy Technology Co ltd
Current assignee: Shenzhen Sanqing New Energy Technology Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-22
Anticipated expiration: 2031-07-13

Abstract

The embodiment of the utility model discloses a double-motor control system for an opposed-piston two-stroke engine, which comprises a shell, an engine body, a driving mechanism, a clutch and a control mechanism, wherein the engine body comprises a crank connecting rod mechanism; when the engine is in a pure engine power output mode, the control mechanism controls the clutch to enable the crank connecting rod mechanism and the driving mechanism to be mutually independent, and controls the driving mechanism to stop running, so that only the engine does work; when the vehicle is in the pure electric output mode, the clutch links the crank connecting rod mechanism and the driving mechanism, so that only the driving mechanism does work; when the hybrid power output mode is adopted, the crank connecting rod mechanism and the driving mechanism are linked by the clutch, and the engine and the driving mechanism work together. The utility model can automatically start the engine to run, reduce the phenomenon of engine flameout and ensure the balance and stable output power of the engine.

Description

Dual-motor control system for opposed-piston two-stroke engine

Technical Field

The utility model relates to the field of engines, in particular to a double-motor control system for an opposed-piston two-stroke engine.

Background

The existing four-stroke engine means that an engine crankshaft completes one working cycle through four strokes of air intake, compression, work application and exhaust every two revolutions, and the two-stroke engine can complete one working cycle through only one revolution of the crankshaft and two strokes. Two opposed pistons of the opposed piston two-stroke engine are arranged in the same cylinder, and a cylinder cover and a valve mechanism are omitted, so that the opposed piston two-stroke engine has the advantages of high power density, small heat transfer loss, good balance and the like.

The opposed-piston two-stroke engine is valued again by the advantages of high efficiency, high power density, power-weight ratio and the like, and compared with the common four-stroke engine, the opposed-piston two-stroke engine omits the main components such as a complex cam valve actuating mechanism and the like, so that the overall structure of the engine is simple and the weight is light; meanwhile, compared with the common single-piston two-stroke engine, the engine has the advantages that the vibration is greatly improved and the power output is more balanced due to the balance design of the opposed pistons. In recent years, with the development of modern technology and electronic control technology, opposed-piston two-stroke engines continue to receive attention and development in order to improve the efficiency and emission performance of internal combustion engines.

During the actual operation of the opposed-piston two-stroke engine, if the engine is abnormally operated for a short time, the flameout phenomenon of the engine can be caused, namely the operation of the engine is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-motor control system for an opposed-piston two-stroke engine, and aims to solve the problems of reducing the phenomenon of engine flameout and difficulty in balancing and stabilizing the output of the engine.

In order to solve the technical problems, the utility model aims to realize the following technical scheme: a dual motor control system for an opposed piston two-stroke engine is provided, comprising:

a housing having an installation space;

the engine body is arranged in the installation space and comprises two symmetrically arranged crank connecting rod mechanisms;

the two driving mechanisms are arranged on the shell and are respectively connected with the crank connecting rod mechanisms;

the two clutches are respectively used for linking the corresponding crank connecting rod mechanism and the driving mechanism;

the control mechanism is electrically connected with the driving mechanism and the clutch;

when the engine is in a pure engine power output mode, the control mechanism controls the clutch to enable the crank connecting rod mechanism and the driving mechanism to be mutually independent, and controls the driving mechanism to stop running, so that only the engine does work; when the vehicle is in the pure electric output mode, the clutch links the crank connecting rod mechanism and the driving mechanism, so that only the driving mechanism does work; when the hybrid power output mode is adopted, the crank connecting rod mechanism and the driving mechanism are linked by the clutch, and the engine and the driving mechanism work together.

Further, the crank connecting rod mechanism comprises a crank and a crank connecting rod, the engine body further comprises a piston and a cylinder arranged in the shell, the piston reciprocates in the cylinder, the piston is rotatably connected to one end of the crank connecting rod, and the other end of the crank connecting rod is rotatably connected to the crank.

Furthermore, actuating mechanism including set firmly in the motor of casing, with the shaft coupling of motor output shaft, the clutch include the first portion and can with the second part of first portion linkage, the first portion set firmly in crank one end, the second part set firmly in on the shaft coupling.

Further, the synchronous mechanism is further included and used for synchronizing the rotating speeds of the output shafts of the two motors.

Furthermore, the synchronizing mechanism comprises a plurality of gears which are meshed in sequence, the gears at the head end and the tail end are fixedly connected with the two cranks respectively, and the rest gears are rotatably connected with the shell.

Furthermore, the synchronizing mechanism is provided with two sets of gear sets, each set of gear set comprises a main gear mounted on the crank and a pinion meshed with the main gear, the pinions in the two sets of gear sets are meshed with each other, and the pinion is rotationally connected to the shell.

Further, the synchronizing mechanism further comprises a gear box mounted on the housing, and the main gear and the pinion are both disposed in the gear box.

Further, a plurality of cooling fins are arranged on the outer wall of the gear box.

Further, the main gear and the auxiliary gear are both one of a straight gear and a helical gear.

Furthermore, the driving mechanism further comprises an energy storage battery which is arranged in the shell and connected with the motor and the control mechanism.

The embodiment of the utility model provides a double-motor control system for an opposed-piston two-stroke engine, which comprises a shell, an engine body, a driving mechanism, a clutch and a control mechanism, wherein the engine body comprises a crank connecting rod mechanism; when the engine is in a pure engine power output mode, the control mechanism controls the clutch to enable the crank connecting rod mechanism and the driving mechanism to be mutually independent, and controls the driving mechanism to stop running, so that only the engine does work; when the vehicle is in the pure electric output mode, the clutch links the crank connecting rod mechanism and the driving mechanism, so that only the driving mechanism does work; when the hybrid power output mode is adopted, the crank connecting rod mechanism and the driving mechanism are linked by the clutch, and the engine and the driving mechanism work together. The utility model can automatically start the engine to run, reduce the phenomenon of engine flameout and ensure the balance and stable output power of the engine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a dual motor control system for an opposed-piston two-stroke engine according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a dual motor control system for an opposed piston two-stroke engine provided in accordance with an embodiment of the present invention;

fig. 3 is a cross-sectional view of a synchronization mechanism provided in an embodiment of the present invention.

The labels in the figures illustrate:

1. a housing; 11. a clutch; 111. a first portion; 112. a second portion; 2. a crank; 21. a crank connecting rod; 22. a piston; 23. a cylinder; 3. a motor; 31. a coupling; 4. a synchronization mechanism; 41. a main gear; 42. a pinion gear; 43. a gear case; 44. a rotating shaft; 5. a heat sink; 6. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

With reference to fig. 1 and 2, an embodiment of the present invention provides a dual-motor control system for an opposed-piston two-stroke engine, including a housing 1 having an installation space, an engine body, two driving mechanisms, two clutches 11 and a control mechanism, where the engine body includes two crank link mechanisms, in this embodiment, the two crank link mechanisms, the two driving mechanisms, the two clutches 11 and the control mechanism are all installed in the installation space, where the two crank link mechanisms are symmetrically disposed on two sides of the housing 1, the two driving mechanisms are respectively connected with the crank link mechanisms and disposed on the housing 1, the two clutches 11 are respectively used for linking the corresponding crank link mechanisms and the driving mechanisms, and the control mechanism is electrically connected to the driving mechanisms and the clutches 11.

In the embodiment, when the engine is in a pure engine power output mode, the control mechanism controls the clutch 11 to make the crank link mechanism and the driving mechanism independent from each other, and controls the driving mechanism to stop running, so that only the engine does work; when the engine is in a pure electric output mode, the clutch 11 links the crank connecting rod mechanism and the driving mechanism, so that only the driving mechanism does work; when the engine is in a hybrid power output mode, the clutch 11 links the crank link mechanism and the driving mechanism, and the engine and the driving mechanism work together. The engine is regulated and controlled through the control mechanism, so that the engine in the embodiment has better working efficiency.

In one embodiment, the crank-link mechanism comprises a crank 2 and a crank-link 21, the engine body further comprises a piston 22 and a cylinder 23 arranged in the housing 1, the piston 22 reciprocates in the cylinder 23, the piston 22 is rotatably connected to one end of the crank-link 21, the other end of the crank-link 21 is rotatably connected to the crank 2, in this embodiment, the cylinder 23 is located between the two cranks 2, and the cylinder 23 and the driving mechanism are located on the same horizontal plane; the pistons 22 are abutted against the inner wall of the cylinder 23, and the two pistons 22 are arranged oppositely, and one ends of the two pistons 22 respectively slide into the cylinder 23 from one end opening of the cylinder 23.

The driving mechanism comprises a motor 3 fixedly arranged on the shell 1 and a coupler 31 connected with an output shaft of the motor 3, one end of the coupler 31 is fixedly arranged at one end of the crank 2, one end of the crank connecting rod 21 is movably arranged at one end of the crank 2, and particularly, the crank connecting rod 21 is arranged at one end, far away from the coupler 31, of the crank 2; in this embodiment, the coupling 31 plays a role of semi-flexible buffering, so that the impact generated by the operation of the engine can be buffered and the motor 3 can be driven to rotate smoothly relatively.

The clutch 11 includes a first portion 111 and a second portion 112 capable of cooperating with the first portion 111, the first portion 111 is fixed at one end of the crank 2, the second portion 112 is fixed on the coupling 31, wherein the clutch 11 includes a cooperating posture and a disengaging posture, when the clutch 11 is in the cooperating posture, the first portion 111 is connected with the second portion 112, the motor 3 operates and is capable of driving the crank 2 to rotate, and when the clutch 11 is in the disengaging posture, the first portion 111 is separated from the second portion 112, and the motor 3 remains in an inoperative state.

The control mechanism comprises a controller 6 arranged in a shell 1, wherein the controller 6 is connected with a motor 3 and a clutch 11 and is used for controlling the opening and closing of the motor 3 and controlling the clutch 11 to be in a linkage posture or a separation posture.

In an embodiment, the driving mechanism further includes an energy storage battery (not shown in the figure) installed in the housing 1, specifically, the motor 3 is a permanent magnet dc motor 3, the energy storage battery is connected to the controller 6 and the motor 3, the energy storage battery is used for starting and supplying power to the motor 3, when the engine is idling, the first portion 111 and the second portion 112 are in a separated posture, the motor 3 keeps an inoperative state, and when the engine is raised to a specified or rated speed, that is, the engine is in a power output state, at this time, the controller 6 drives the motor 3 and the crank 2 to be in a linkage state by controlling the clutch 11, so as to convert kinetic energy of the engine into electric energy, and store the electric energy into the energy storage battery, so that the engine enters a power generation mode. When starting the engine, the energy storage battery provides electric energy to the motor 3 for the motor 3 drives the engine to start, makes the engine start speed fast and operates steadily and vibrates for a short time through the mode of electricity start.

In the actual starting stage of the engine, the controller 6 controls the two motors 3 to operate, and simultaneously controls the first part 111 and the second part 112 to be connected, namely, the clutch 11 is in a linkage posture at the moment, the motors 3 drive the corresponding couplers 31 and the cranks 2 to rotate, so that the corresponding crank connecting rods 21 and the cranks 2 rotate relatively, and accordingly the corresponding pistons 22 are driven to be connected to the cylinders 23 in a reciprocating sliding mode, and the working cycle of two strokes of air intake, compression, power application and exhaust for several times is completed until the engine is started stably. When the engine runs unstably, such as ignition and fire, abnormal fuel supply and other problems, due to stalling of the engine, the power generation mode is automatically converted into a pure electric output mode through control of the controller, namely, the motor drives the crankshaft and the piston of the engine to move, so that an engine ECU (electronic control Unit) can make fault judgment in time and adjust the strain of an electric control system, and the engine is guaranteed not to be flamed out and is recovered to be normal rapidly.

The clutch 11 is judged and controlled to be changed into the linkage posture from the separation posture through the controller 6 according to the rotating speed of the engine, namely the crank 2 and the piston 22 are driven to move through the motor 3, and then the engine is guaranteed not to be flamed out, so that the phenomenon that the engine is frequently flamed out in the prior art is reduced, and the working stability of the engine is improved.

With reference to fig. 2 and 3, the single motor starting system in the conventional manner has a heavy weight and a complicated transmission mechanism, and because two sets of output shafts make it difficult for the engine to balance and stably output, in the embodiment of the present application, the engine further includes a synchronizing mechanism 4 for keeping the rotation speeds of the output shafts of the two motors 3 the same.

In an embodiment, the synchronizing mechanism 4 includes a plurality of gears engaged in sequence, the gears at the head and tail ends are fixedly connected with the crank 2 respectively, and the other gears are rotatably connected with the housing 1, specifically, the synchronizing mechanism 4 is provided with two sets of gear sets, each set of gear set includes a main gear 41 mounted on the corresponding crank 2 and a pinion 42 engaged with the main gear 41, the main gear 41 is fixedly mounted at one end of the crank 2 close to the coupler 31, the pinions 42 in the two sets of gear sets are engaged with each other, and the pinion 42 rotates relative to the housing 1 around a rotating shaft 44 disposed in the housing 1. In one embodiment, spur gears are used for both the main gear 41 and the sub-gear 42; in another embodiment, helical gears are used for both the primary gear 41 and the secondary gear 42.

In order to protect the gear sets and prolong the service life of the gear sets, the synchronizing mechanism 4 further comprises a gear box 43, the gear box 43 can be mounted on the shell 1 through bolts, the gear sets are mounted in the gear box 43, and the crank 2 partially extends into the gear box 43 to be connected with the corresponding main gear 41; in order to ensure the sealing performance of the gear box 43, a sealing structure such as a sealing ring (not shown) may be disposed at the opening of the gear box 43; more preferably, the gear box 43 is provided with a plurality of cooling fins 5, and specifically, the plurality of cooling fins 5 are uniformly arranged on the outward side of the gear box 43, so as to improve the heat dissipation effect of the gear box 43, and further prolong the service life of the gear set. During manufacturing, according to actual needs, the outer wall of the housing 1 may also be provided with heat dissipation fins 5, which are not described in detail in the embodiments.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A dual motor control system for an opposed piston two-stroke engine, comprising:

a housing (1) having an installation space;

the engine body is arranged in the installation space and comprises two symmetrical crank connecting rod mechanisms;

the two driving mechanisms are arranged on the shell (1) and are respectively connected with the crank connecting rod mechanisms;

two clutches (11) for linking the corresponding crank-link mechanism and the driving mechanism respectively;

a control mechanism electrically connected to the drive mechanism and the clutch (11);

when the engine is in a pure engine power output mode, the control mechanism controls the clutch (11) to enable the crank connecting rod mechanism and the driving mechanism to be mutually independent, and controls the driving mechanism to stop running, so that only the engine does work; when the vehicle is in the pure electric output mode, the clutch (11) links the crank connecting rod mechanism and the driving mechanism, so that only the driving mechanism does work; when the hybrid power output mode is adopted, the clutch (11) enables the crank connecting rod mechanism and the driving mechanism to be linked, and the engine and the driving mechanism work together.

2. A dual motor control system for an opposed piston two-stroke engine as recited in claim 1, wherein: the crank connecting rod mechanism comprises a crank (2) and a crank connecting rod (21), the engine body further comprises a piston (22) and a cylinder (23) arranged in the shell (1), the piston (22) reciprocates in the cylinder (23), the piston (22) is rotatably connected to one end of the crank connecting rod (21), and the other end of the crank connecting rod (21) is rotatably connected to the crank (2).

3. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 2 wherein: the driving mechanism comprises a motor (3) fixedly arranged on the shell (1) and a coupler (31) connected with an output shaft of the motor (3), the clutch (11) comprises a first part (111) and a second part (112) capable of being linked with the first part (111), the first part (111) is fixedly arranged at one end of the crank (2), and the second part (112) is fixedly arranged on the coupler (31).

4. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 3 wherein: the synchronous mechanism (4) is used for synchronizing the rotating speeds of the output shafts of the two motors (3).

5. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 4 wherein: the synchronizing mechanism (4) comprises a plurality of gears which are meshed in sequence, the gears at the head end and the tail end are fixedly connected with the cranks (2) respectively, and the rest gears are rotatably connected with the shell (1).

6. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 5 wherein: the synchronizing mechanism (4) is provided with two sets of gear sets, each set of gear set includes a main gear (41) installed on the crank (2) and a pinion (42) meshed with the main gear (41), the pinions (42) in the two sets of gear sets are meshed with each other, and the pinion (42) is rotationally connected to the shell (1).

7. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 6 wherein: the synchronizing mechanism (4) further comprises a gear box (43) arranged on the shell (1), and the main gear (41) and the auxiliary gear (42) are both arranged in the gear box (43).

8. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 7 wherein: the outer wall of the gear box (43) is provided with a plurality of cooling fins (5).

9. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 6 wherein: the main gear (41) and the auxiliary gear (42) are both straight gears or helical gears.

10. A dual motor control system for an opposed piston two-stroke engine as set forth in claim 3 wherein: the driving mechanism further comprises an energy storage battery which is arranged in the shell (1) and connected with the motor (3) and the control mechanism.