CN105501045B - Mixed power plant and its control method - Google Patents

Abstract

A kind of mixed power plant and its control method, device include engine and the motor positioned at engine output end, pass through clutch system between engine output end and motor and are sequentially connected；In the space that the rotor that clutch system is located at motor surrounds, including coaxially arranged and axially aligned drum clutch and gear clutch；The active part of drum clutch is affixed with rotor, and secondary part is affixed with engine output shaft, and gear clutch active part is affixed with engine output shaft, and secondary part is affixed with rotor；Drum clutch, gear clutch are staggeredly closed.In use, can control the opening and closing of two clutches, so that the torque between motor and engine transmits, and the axial length of entire mixed power plant is small.

Description

Mixed power plant and its control method

Technical field

The present invention relates to automotive fields, and in particular to a kind of mixed power plant and its control method.

Background technique

The power source of mixed power plant includes motor and engine, according to different operating conditions select different power source with Transmission system connects action edge output of going forward side by side.Such as when high-speed running automobile, the torque and power needed is higher, then by starting Machine or engine conjunction with motor are exported as power source；When the operation of automobile low speed, the torque and power needed is lower, then can be with So that engine is not worked, is only exported by motor as power source.

Fig. 1 shows a kind of existing mixed power plant, and wherein motor 1 is sequentially connected with transmission system 2 always, always Output torque.Engine 3 is sequentially connected by clutch 4 and motor 1, and clutch 4 is for realizing between motor 1 and engine 3 Connect or disconnect.When clutch 4 is closed, engine 3 is connect with motor 1, and engine 3 can be defeated to transmission system 2 at this time Torque out；When clutch 4 separates, engine 3 and motor 1 are disconnected, and engine 3 and transmission system 2 disconnect at this time, and automobile can be with With the operation of pure motor drive mode.

The advantages of this mixed power plant, is: when engine does not work, disconnect itself and motor, can to avoid by It follows motor to rotate in engine and consumes power of motor, improve the fuel economy of mixed power plant.

Its shortcoming is that: compared to the power device with transmission, mixed power plant is between engine 3 and transmission system 2 Motor 1 and clutch 4 are increased, so that the axial length of entire power device becomes larger.And extremely have in the installation space of automobile Limit, so that increased motor 1 and clutch 4 face the difficulty of installation.

To solve the above problems, the prior art, which is generallyd use, is built in the mode in motor for clutch to reduce mixing and move The axial length of power device.Wherein clutch is generally traditional friction clutch, gear clutch or drum clutch.

For friction clutch, due to being axially aligned between its main component such as driving disc spacing pressing, friction plate, driven disc , axial length is big, cannot be completely disposed inside motor, is still required to occupy the axial space except motor, therefore entire dynamic The axial length of Force system is still larger.

For gear clutch, high torque can be transmitted but biggish speed difference cannot be born, this will imply that motor 1 cannot be used for starting engine 3, and need that starter is in addition arranged to be used to start engine 3, this will also increase entire dynamic The size of power device.

For drum clutch, biggish speed difference can be born or be completely disposed inside rotor, but by In the limitation in structure, drum clutch cannot transmit high torque, this will cause engine to cannot be used for high-power operation Operating condition.

Summary of the invention

Problems solved by the invention is to provide a kind of mixed power plant, with lesser axial length, and is able to satisfy The high-power operating condition of engine.

To solve the above problems, the present invention provides a kind of mixed power plant, including engine and start positioned at described The motor of machine output end is sequentially connected between the engine output end and the motor by clutch system, the motor Output end is used to be sequentially connected with transmission system；In the space that the rotor that the clutch system is located at the motor surrounds, packet Include coaxially arranged and axially aligned drum clutch and gear clutch；The drum clutch has the first active part With the first secondary part, first active part connect and rotates synchronously with the rotor, first secondary part It connect and rotates synchronously with the engine output end；The gear clutch has the second active part and the second follower Point, second active part connect and rotates synchronously with the engine output end, second secondary part and the electricity Machine rotor is connected and is rotated synchronously；When the drum clutch is closed, the gear clutch disconnect, the motor can be used for opening Move the engine；When the drum clutch disconnects, gear clutch closure, the engine can be used for exporting torsion Square.

Optionally, the drum clutch further includes the pressure elements connecting with first secondary part；The clutch Device system further includes operating mechanism, and the operating mechanism has the sliding block positioned at the pressure elements radially inner side, the sliding block Diametrically opposite surface contacts with each other with the pressure elements, and at least one is lozenges；The sliding block can be along axial shifting Dynamic, the pressure elements and first secondary part are moved radially with the axial movement of the sliding block.

Optionally, the sliding block and the diametrically opposite surface of the pressure elements are lozenges, and two lozenges Between be bonded to each other.

Optionally, the gear clutch further includes connecting bracket, and second active part passes through connecting bracket and institute Sliding block is stated to be fixedly connected；The connecting bracket and second active part are with the axial movement of the sliding block and along axial shifting It is dynamic.

Optionally, the engine output end is installed with crank and is connected to the crank bracket of the crank, the crank Bracket is located in the space that the rotor surrounds, and the pressure elements and the connecting bracket are radially arranged in the song respectively It is rotated synchronously in handle bracket and with the crank bracket.

Optionally, the operating mechanism also has the driving portion being connected with the slide block, and the driving portion drives the cunning Block is axially moveable.

Optionally, in the drum clutch, the first active part coaxial sleeve is set to outside the first secondary part；It is described First secondary part has multiple circumferentially distributed clutch parts, the corresponding pressure elements of each clutch part, the clutch part It can move radially, to be bonded or separate with first active part.

Optionally, it is connected between the clutch part and the corresponding pressure elements by the first elastic component.

Optionally, it is connected between circumferentially-adjacent clutch part by the second elastic component.

Optionally, first active part, the surface of first secondary part diametrically are installed with friction respectively Piece.

Optionally, in the gear clutch, the second active part and the second secondary part are axially opposed, and described second Active part can be axially moveable, to engage or separate with the second secondary part.

Optionally, it is installed with rotor field spider on the inner peripheral surface of the rotor, it is first active part, described second driven Part is fixedly arranged on the rotor field spider respectively and is connect by the rotor field spider with the rotor.

The present invention also provides a kind of control methods for above-mentioned first item mixed power plant, when the electric motor starting institute When stating engine, the drum clutch closure is controlled, the gear clutch disconnects；When the engine output torque, Control the drum clutch disconnection, gear clutch closure.

Compared with prior art, technical solution of the present invention has the advantage that

In mixed power plant, clutch system includes drum clutch and gear clutch.In use, can be by drum-type Clutch is used for motor to engine output torque to start engine, and it is defeated to transmission system that gear clutch is used for engine Torque is out to drive running car；And drum clutch and gear clutch are fully located in the space that rotor surrounds, can Reduce the axial length of mixed power plant.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of prior art mixed power plant；

Fig. 2 is the structural schematic diagram of the mixed power plant of the embodiment of the present invention；

Fig. 3 is the partial sectional view of the mixed power plant of the embodiment of the present invention in axial direction；

Torque transmission figure when Fig. 4 is electric motor starting engine in the mixed power plant of the embodiment of the present invention；

Fig. 5 is the torque transmission figure of engine-driven car when driving in the mixed power plant of the embodiment of the present invention；

Fig. 6 is the structural schematic diagram of drum clutch radially in mixed power plant of the embodiment of the present invention, wherein The first active part is not shown.

Specific embodiment

To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention Specific embodiment be described in detail.

The embodiment of the present invention provides a kind of mixed power plant, referring to Fig. 2 and combines Fig. 3, including engine 10 and position In the motor 20 of engine output end, pass through (the dotted portion in Fig. 2 of clutch system 30 between engine output end and motor 20 It is shown) transmission connection, 20 output end of motor is for connecting transmission system 40.

Motor 20 has rotor 21, and wherein motor 20 is inner rotor motor, and rotor 21 is internal rotor.Clutch system 30 In in the space that rotor 21 surrounds, clutch system 30 includes coaxially arranged and axially aligned drum clutch 31 and tooth-like Clutch 32.Wherein along axial relative position, there is no limit can be set drum between drum clutch 31, gear clutch 32 Formula clutch 31 is closer to transmission system 40 or gear clutch is arranged closer to transmission system 40.

In other embodiments, motor is also possible to external rotor electric machine, but needs to require the space between rotor and stator It is sufficiently large, to accommodate clutch system.

Fig. 6, direction radially inward are simultaneously combined referring to Fig. 3, drum clutch 31 has the first active part 31a and the One secondary part 31b, the first active part 31a is connect with the rotor 21 of motor 20 and synchronous rotation, the first secondary part 31b is connect with engine output end and synchronous rotation.

Wherein, the first active part 31a and the first secondary part 31b is annular, and the first active part 31a is coaxially arranged In outside the first secondary part 31b, the first secondary part 31b has multiple circumferentially distributed clutch part 31b ', each clutch part 31b ' can be moved radially, to be bonded or separate with the first active part 31a.The quantity of clutch part 31b ' can according to need Setting, in the present embodiment, setting clutch part 31b ' is four and is uniformly distributed circumferentially, and wherein one has wherein only been marked in Fig. 6 Part.

Gear clutch 32 has the second active part 32a and the second secondary part 32b, the second active part 32a and hair Motivation output end is connected and is rotated synchronously, and the second secondary part 32b connect and rotates synchronously with the rotor 21 of motor 20.

Wherein, the second active part 32a and the second secondary part 32b are in a ring and axially opposed, the second initiative part Divide 32a that can be axially moveable, to engage or separate with the second secondary part 32b.

In above-mentioned drum clutch 31 and gear clutch 32, active part is used to be used as torque input end, secondary part As torque output, torque is transferred to secondary part from active part, to drive the component of secondary part side to rotate.

Wherein, drum clutch 31 and gear clutch 32 are alternately closed.That is, when drum clutch 31 is closed When, gear clutch 32 disconnect, motor 20 can be used for starting engine 10 at this time；Conversely, when drum clutch 31 disconnects, tooth Formula clutch 32 is closed, and engine 10 can be used for output torque at this time.

The working principle of the present embodiment mixed power plant is as follows:

In drum clutch 31, the first secondary part 31b connect and rotates synchronously with engine output end, the first initiative part Point 31a connect and rotates synchronously with rotor 21, then: when the clutch part 31b ' of the first secondary part 31b be moved radially outwards to When being bonded with the first active part 31a (i.e. drum clutch 31 be closed), rotor 21 and engine output end are connected with each other and same Step rotation, to realize the connection of motor 20 and engine 10 and synchronous rotation；When the first secondary part 31b is moved radially inward It moves to when being separated with the first active part 31a, rotor 21 and engine output end disconnect, so that motor 20 and engine 10 are disconnected It opens.Since drum clutch 31 is able to bear biggish speed difference, when engine 10 is static, motor 20 operates, can incite somebody to action Starting motor of the motor 20 as engine 10, when needing to start engine 10, drum clutch 31 is closed, and realizes motor 20 Engine 10 is driven to rotate.

In gear clutch 32, the second active part 32a connect and rotates synchronously with engine output end, the second follower Divide 32b to connect and rotate synchronously with rotor 21, then it is similar with drum clutch 31, when the second active part 32a is along axial shifting It moves to (i.e. gear clutch 32 be closed) when being bonded with the second secondary part 32b, motor 20 connects and synchronous turn with engine 10 It is dynamic；When the second active part 32a is axially moveable to when separating with the second secondary part 32b, motor 20 and engine 10 are disconnected. Since gear clutch 32 is able to bear biggish torque, it can be used for transmitting engine torque, therefore, when engine 10 starts Afterwards, gear clutch 32 can be closed, the torque of engine 10 is passed into transmission system 40 by rotor 21.

In practical operation, when needing to start engine, then the closure of drum clutch 31, gear clutch 32 are separated, The torque of motor 20 passes to engine 10, and making the starting of engine 10, (hollow arrow direction indicates that torque passes in Fig. 4, Fig. 4 Pass direction)；After the starting of engine 10, when needing to transmission system output torque, particularly exporting high torque, then by tooth The closure of formula clutch 32, drum clutch 31 separate, so that the torque of engine 10 passes to motor 20, is then passed to transmission System 40, driving automobilism (hollow arrow direction indicates directions of torque transfer in Fig. 5, Fig. 5).

It can be seen that passing through control drum clutch 31 and gear clutch 32 in the mixed power plant of the present embodiment Closure or separation, can control between engine 10 and motor 20 torque transmitting.Both motor 20 can be regard as engine Start motor to use, also can be realized engine 10 to transmission system and export large torque.Clutch system 30 is located at motor simultaneously Inside 20 rotor 21, the axial length of the axial space being not take up outside motor 20, entire mixed power plant is smaller.

With continued reference to Fig. 3, engine output end is installed with crank 11 and is connected to the crank bracket 12 of crank 11, crank branch Frame 12 is located in the space that rotor 21 surrounds and rotates synchronously with engine output end.

In drum clutch 31, each clutch part 31b ' passes through the crank branch of a pressure elements 31c and engine output end Frame 12 connects.Specifically, one end of pressure elements 31c is radially arranged in song with corresponding clutch part 31b ' connection, the other end In handle bracket 12, wherein pressure elements 31c can opposing cranks bracket 12 move radially but with crank bracket 12 rotate synchronously.Its In, by the first elastic component 31f connection between each clutch part 31b' and corresponding pressure elements 31c, as clutch part 31b ' and When corresponding first active part 31a is bonded, the first elastic component 31f can provide buffering therebetween, guarantee between the two Steady fitting.

In gear clutch 32, the second active part 32a passes through the crank branch of a connecting bracket 32c and engine output end Frame 12 connects.Specifically, one end of connecting bracket 32c is connect with the second active part 32a, and the other end is radially arranged in crank In bracket 12, wherein connecting bracket 32c can be moved axially relative to crank bracket 12 but be rotated synchronously with crank bracket 12.

Be installed with rotor field spider 22 on the inner peripheral surface of rotor 21, the first active part 31a of drum clutch 31, it is tooth-like from Second secondary part 32b of clutch 32 passes through rotor field spider 22 respectively and is fixedly arranged on rotor 21, such as the first active part 31a, Two secondary part 32b can be embedded in rotor field spider 22.

Wherein, in drum clutch 31, the surface difference of the first active part 31a, the first secondary part 31b diametrically It is installed with friction plate 31d.

Referring to Fig. 3, pass through an operating mechanism 33 (Fig. 3), realization drum clutch 31 and gear clutch in the present embodiment 32 are alternately closed.Operating mechanism 33 has the sliding block 33a positioned at pressure elements 31c radially inner side, and connect with sliding block 33a Driving portion 33b, driving sliding block 33a are axially moveable, and driving portion 33b is hydraulic cylinder.The outside of sliding block 33a radially has first Lozenges A, the first lozenges A are contacted with the radially inner side of pressure elements 31c.The inside of pressure elements 31c radially have with Second lozenges B of the first lozenges A fitting.Sliding block 33a can axially move, i.e. the first lozenges A is moved axially, to change Become the contact site between the first lozenges A and the second lozenges B, to push pressure elements 31c and the first edge secondary part 31b Move radially, i.e. pressure elements 31c and the first secondary part 31b can with the axial movement of sliding block 33a and towards or away from First active part 31a is mobile, to realize and the fitting of the first active part 31a or separate.

Wherein, it is annular referring to Fig. 6, the first lozenges A, is contacted simultaneously with four circumferentially distributed pressure elements 32c.

In gear clutch 32, connecting bracket 32c is connect with sliding block 33a.Connecting bracket 32c and the second active part 32a It can be axially moveable with the axial movement of sliding block 33a, i.e., it is mobile towards or away from the second secondary part 32b, to realize With the fitting of the second secondary part 32b or separate.

It can be seen that operating mechanism 33 can control drum clutch 31 and tooth by the axial movement of control sliding block 33a Formula clutch 32 is alternately opened and closed.Such as Fig. 3, when sliding block 33a moves right, sliding block 33a pushes pressure elements 33c and first driven Part 31b is moved radially outward and is bonded with the first active part 31a, while sliding block 33a drives the second active part 32a remote It is mobile from the second secondary part 32b, separated with the second secondary part 32b, when the closure of drum clutch 31 is achieved, it is tooth-like from Clutch 32 separates (Fig. 4).Conversely, sliding block 33a is moved backward, realize that drum clutch 31 separates, the closure (figure of gear clutch 32 5).In Fig. 3, along the direction of paper from left to right, the radial dimension of the first lozenges A becomes smaller in sliding block 33a, then it is main to be arranged second Dynamic part 32a is between the second secondary part 32b and drum clutch 31.

In other embodiments, if the shape of the first lozenges in sliding block with the present embodiment on the contrary, if it is driven by second Part is set between the second active part and drum clutch.

If the driving portion 33b of Fig. 3, operating mechanism 33 are set on the crankshaft 11 of engine 10 by first bearing 33c, sliding block 33a then passes through the output end that second bearing 33d is set to driving portion 33b.Driving portion 33b is remain stationary relative to other component, with Reduce the loss generated when torque transmitting in mixed power plant.

In other embodiments, driving portion can also use other drive forms such as cylinder.Pressure elements and sliding block In surface diametrically, as long as having a surface is lozenges, another surface is also possible to other shapes, such as flat Face enables the axial movement of sliding block to move radially pressure elements i.e. as long as two surfaces keep contacting with each other always It can.

Referring to Fig. 6, in drum clutch 31, by the second elastic component 31e connection between circumferentially-adjacent clutch part 31b', First secondary part 31b and the second elastic component 31e surround an annular.In Fig. 3, when sliding block 33a moves right along paper, Four clutch part 31b ' are respectively facing the first active part 31a movement under the promotion of sliding block 33a, and the diameter of the annular surrounded becomes Greatly, the second elastic component 31e is tensioned and puts aside restoring force at this time；When sliding block 33a reverse movement, due to the presence of centrifugal force, Clutch part 31b ' will not be moved backward automatically, and then providing restoring force by the second elastic component 31e at this time returns the annular surrounded To initial diameter, so that the first secondary part 31b is made to return to initial position.

In the present embodiment, operation can be controlled using mechanical system or in such a way that control unit is by process control The movement of mechanism 33, to realize being alternately closed for drum clutch 31 and gear clutch 32

In other embodiments, operating mechanism also can be set respectively independently to control drum clutch and gear clutch System.

The present embodiment also provides a kind of control method for above-mentioned mixed power plant, wherein when motor 20 is for opening When dynamic engine 10, control drum clutch 31 closure, gear clutch 32 are disconnected；When engine 10 is used for output torque, Control the disconnection of drum clutch 31, gear clutch 32 is closed.

Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (13)

1. a kind of mixed power plant, including engine and positioned at the motor of the engine output end, the engine is defeated It is sequentially connected between outlet and the motor by clutch system, the motor output end, which is used to be driven with transmission system, to be connected It connects；In the space that the rotor that the clutch system is located at the motor surrounds；

It is characterized in that, the clutch system includes coaxially arranged and axially aligned drum clutch and tooth-like clutch Device；

The drum clutch has the first active part and the first secondary part, and first active part and the motor turn Son is connected and is rotated synchronously, and first secondary part connect and rotates synchronously with the engine output end；

The gear clutch has the second active part and the second secondary part, second active part and the engine Output end is connected and is rotated synchronously, and second secondary part connect and rotates synchronously with the rotor；

When the drum clutch is closed, the gear clutch disconnect, the motor can be used for starting the engine；

When the drum clutch disconnects, gear clutch closure, the engine can be used for output torque.

2. mixed power plant as described in claim 1, which is characterized in that the drum clutch further includes and described first The pressure elements of secondary part connection；

The clutch system further includes operating mechanism, and the operating mechanism has the cunning positioned at the pressure elements radially inner side Block, the sliding block surface diametrically opposite with the pressure elements contact with each other, and at least one is lozenges；

The sliding block can axially move, the pressure elements and first secondary part with the sliding block axial movement And it moves radially.

3. mixed power plant as claimed in claim 2, which is characterized in that the sliding block and the pressure elements radially phase Pair surface be lozenges, and be bonded to each other between two lozenges.

4. mixed power plant as claimed in claim 2, which is characterized in that the gear clutch further includes connecting bracket, Second active part is fixedly connected by connecting bracket with the sliding block；

The connecting bracket and second active part are axially moveable with the axial movement of the sliding block.

5. mixed power plant as claimed in claim 4, which is characterized in that the engine output end is installed with crank and company It is connected to the crank bracket of the crank, the crank bracket is located in the space that the rotor surrounds, the pressure elements and institute Connecting bracket is stated radially to be arranged in the crank bracket and rotate synchronously with the crank bracket respectively.

6. mixed power plant as claimed in claim 2, which is characterized in that the operating mechanism also has to be connected with the sliding block The driving portion connect, the driving portion drive the sliding block to be axially moveable.

7. mixed power plant as described in claim 1, which is characterized in that in the drum clutch, described first actively Part coaxial sleeve is set to outside the first secondary part；

First secondary part has multiple circumferentially distributed clutch parts, the corresponding pressure elements of each clutch part, institute Stating clutch part can move radially, to be bonded or separate with first active part.

8. mixed power plant as claimed in claim 7, which is characterized in that the clutch part and the corresponding pressure elements Between by the first elastic component connect.

9. mixed power plant as claimed in claim 7, which is characterized in that pass through the second bullet between circumferentially-adjacent clutch part Property part connection.

10. mixed power plant as claimed in claim 7, which is characterized in that first active part, described first driven Partially radially opposite surface is installed with friction plate respectively.

11. mixed power plant as described in claim 1, which is characterized in that in the gear clutch, the second active part Axially opposed with the second secondary part, second active part can be axially moveable, to engage with the second secondary part Or separation.

12. mixed power plant as described in claim 1, which is characterized in that be installed with rotor on the inner peripheral surface of the rotor Bracket, first active part, second secondary part are fixedly arranged on the rotor field spider and respectively by the rotor branch Frame is connect with the rotor.

13. a kind of control method for mixed power plant described in claim 1, which is characterized in that when the electric motor starting When the engine, the drum clutch closure is controlled, the gear clutch disconnects；

When the engine output torque, the drum clutch disconnection, gear clutch closure are controlled.