CN102939229A

CN102939229A - Drive system for automobile and method for controlling drive system for automobile

Info

Publication number: CN102939229A
Application number: CN2011800293308A
Authority: CN
Inventors: 市川和树; 菅文康
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2010-06-15
Filing date: 2011-05-20
Publication date: 2013-02-20
Anticipated expiration: 2031-05-20
Also published as: WO2011158603A1; JPWO2011158603A1; JP5542204B2; CN102939229B

Abstract

Disclosed is a drive system (1) for an automobile, wherein the system is provided with first and second engines (ENG1, ENG2), first and second transmissions (TM1, TM2), first and second oneway clutches (OWC1, OWC2) respectively provided in output units of the first and second transmissions, a rotated/driven member (11) commonly linked to output members (121) of the first and second oneway clutches (OWC1, OWC2) through clutch mechanisms (CL1, CL2) to transmit rotational power transmitted to the output members of the oneway clutches to a drive wheel (2), a main motor generator (MG1) connected to the rotated/driven member (11), a synchronization mechanism (20) for connecting/blocking the rotated/driven member and the output shaft of the second engine, and a control means (5). Under the conditions that the power is input to the rotated/driven member (11) and the synchronization mechanism (20) is connected so as to be capable of transmitting power, the control means (5) starts the second engine (ENG2) by cranking the second engine (ENG2) by the power of the rotated/driven member (11).

Description

The control method of automobile-use drive system and automobile-use drive system

Technical field

The present invention relates to possess the automobile-use drive system of a plurality of combustion engine section and the control method of automobile-use drive system.

Background technology

As existing automobile-use drive system, known multiple systems is (for example,, with reference to patent documentation 1～3.）。Wherein, the described system of patent documentation 1 is, is equipped with these two driving engines of the 1st driving engine and the 2nd driving engine as propulsion source, when the moment of torsion of needs hour, only make the 1st driving engine action, and its output is inputted to change-speed box, when the moment of torsion of needs becomes large, append the 2nd driving engine and make its action, thus, be input to change-speed box after the output of two driving engines is synthetic, thereby derive with the optimal conditions corresponding to condition of loading the moment of torsion needed, improve the consumption of fuel of vehicle.

In addition, the described system of patent documentation 2 is, the power that will have the driving engine (can regard in fact two driving engines as) of two different pistons of stroke is input to change-speed box side by side via free-wheel clutch, thereby to the output shaft transmission.

Technical literature formerly

Patent documentation

Patent documentation 1: the examined patent publication 63-35822 of Japan communique

Patent documentation 2: the JP 2003-83105 of Japan communique

Patent documentation 3: the special table 2005-502543 of Japan communique

Summary of the invention

The problem that invention will solve

; because patent documentation 1 and the described actuating device of patent documentation 2 are by two driving engines or will be input to the device of change-speed box after the power coupling of two driving engines in fact independently; therefore can't change respectively corresponding to the output required the rotating speed etc. of each driving engine; therefore; can't obtain the high-efficiency point of driving engine, in the improvement of consumption of fuel, have limit.

The present invention completes in view of the above problems, and it is a kind of more efficient and can realize the automobile-use drive system of improvement of consumption of fuel and the control method of automobile-use drive system that its purpose is to provide.

For the means of dealing with problems

To achieve these goals, the invention of technical scheme 1 is automobile-use drive system (for example, the drive system 1 in embodiment described later),

Described automobile-use drive system possesses:

The 1st combustion engine section (for example, the 1st driving engine ENG1 in embodiment described later) and the 2nd combustion engine section (for example, the 2nd driving engine ENG2 in embodiment described later), they produce respectively rotary power independently;

The 1st speed-changing mechanism (for example, the 1st change-speed box TM1 in embodiment described later) and the 2nd speed-changing mechanism (for example, the 2nd change-speed box TM2 in embodiment described later), the rotary power that they produce described the 1st combustion engine section and the 2nd combustion engine section separately is speed change output respectively;

The 1st free-wheel clutch (for example, the 1st free-wheel clutch OWC1 in embodiment described later) and the 2nd free-wheel clutch (for example, the 2nd free-wheel clutch OWC2 in embodiment described later), they are located at respectively described the 1st speed-changing mechanism and the 2nd speed-changing mechanism efferent separately, and (for example there is input block, input block 122 in embodiment described later), output block (for example, output block 121 in embodiment described later), and the engaging part that makes these input blocks and output block become mutually lock-out state or unlock state (for example, roller 123 in embodiment described later), described the 1st free-wheel clutch and the 2nd free-wheel clutch are configured to, when being subject to rotating speed from the forward of the described input block of described the 1st speed-changing mechanism and the 2nd speed-changing mechanism rotary power separately and surpassing the rotating speed of forward of described output block, described input block and output block become lock-out state, the rotary power that will be input to thus described input block is passed to described output block, and

(for example be driven in rotation parts, be driven in rotation parts 11 in embodiment described later), it links with the mode that shared and two output blocks of described the 1st free-wheel clutch and the 2nd free-wheel clutch, with the rotary power of the output block that will be passed to each free-wheel clutch for example, to (driving wheel, driving wheel 2 in embodiment described later) transmit

The rotary power of described the 1st combustion engine section and the generation of the 2nd combustion engine section is input to described the 1st free-wheel clutch and the 2nd free-wheel clutch via described the 1st speed-changing mechanism and the 2nd speed-changing mechanism, and via the 1st free-wheel clutch and the 2nd free-wheel clutch, described rotary power is input to the described parts that are driven in rotation, described automobile-use drive system is characterised in that

Described automobile-use drive system at the output shaft of described the 2nd combustion engine section (for example, output shaft S2 in embodiment described later) and described being driven in rotation between parts (for example possess clutch unit, synchronizer gear 20 in embodiment described later), the output shaft that described clutch unit could cut off and connect described the 2nd combustion engine section from be driven in rotation transmission of powers between parts, different with the transmission of power carried out via described the 2nd speed-changing mechanism, and

Described automobile-use drive system (for example possesses control unit, control unit 5 in embodiment described later), described control unit is configured to, at power, be imported under the described state that is driven in rotation parts, by make described clutch unit become can transferring power coupled condition, utilize the described power that is driven in rotation parts that described the 2nd combustion engine section is rotated, thereby make the starting of the 2nd combustion engine section.

The invention of technical scheme 2 is characterised in that, in the structure of technical scheme 1,

Main dynamotor (for example, the main dynamotor MG1 in embodiment described later) is connected in the described parts that are driven in rotation.

The invention of technical scheme 3 is characterised in that, in the structure of

technical scheme

1 or 2,

When described the 2nd combustion engine section rotates, described control unit is controlled the converter speed ratio of described the 2nd speed-changing mechanism, so that the rotating speed of the input block of described the 2nd free-wheel clutch is lower than the rotating speed of output block.

The invention of technical scheme 4 is characterised in that, in the structure of technical scheme 3,

Described the 2nd speed-changing mechanism for example, forms by converter speed ratio being set as to infinitely-great stepless speed changing mechanism (, stepless speed changing mechanism BD1, the BD2 in embodiment described later).

The invention of technical scheme 5 is characterised in that, in the structure of technical scheme 4,

Described stepless speed changing mechanism possesses:

Input shaft (for example, the input shaft 101 in embodiment described later), it for example, rotates around input central axis (, the input central axis O1 in embodiment described later) by being subject to rotary power;

A plurality of the 1st fulcrums (for example, the 1st fulcrum O3 in embodiment described later), they made progress uniformly-spaced to arrange in the week of this input shaft, and with respect to the offset of described input central axis (for example can change respectively, offset r1 in embodiment described later), and, while described a plurality of the 1st fulcrum keeps this offset to rotate together with described input shaft around this input central axis;

A plurality of eccentric disks (for example, the eccentric disk 104 in embodiment described later), they have described each the 1st fulcrum as center separately, and around described input central axis rotation;

Free-wheel clutch (for example, free-wheel clutch 120 in embodiment described later), it has: around the output center axis left from described input central axis (for example, output center axes O 2 in embodiment described later) output block (for example, the output block 121 in embodiment described later) of rotation; By the power that is subject to hand of rotation from outside for example, around the input block (, the input block 122 in embodiment described later) of described output center axis oscillating; And the engaging part that makes these input blocks and output block become mutually lock-out state or unlock state (for example, roller 123 in embodiment described later), described free-wheel clutch is configured to, when the rotating speed of the forward of described input block surpasses the rotating speed of forward of described output block, the rotary power that is input to described input block is passed to described output block, thus the hunting motion of described input block is converted to rotatablely moving of described output block;

The 2nd fulcrum (for example, the 2nd fulcrum O4 in embodiment described later), it is located at the position of leaving from described output center axis on described input block;

A plurality of connecting members (for example, connecting member 130 in embodiment described later), their ends separately (for example, ring portion 131 in embodiment described later) be linked to the periphery of described each eccentric disk in the mode freely of can rotating centered by described the 1st fulcrum, the other end (for example, the other end 132 in embodiment described later) be linked in the mode that can rotate freely described the 2nd fulcrum arranged on the input block of described free-wheel clutch, thus, to be imposed on by described input shaft the hunting motion that to rotatablely move to the input block transmission of described free-wheel clutch be this input block of described eccentric disk, and

The converter speed ratio changeable mechanism (for example, converter speed ratio changeable mechanism 112 in embodiment described later), it is by regulating the offset of described the 1st fulcrum with respect to described input central axis, change the pendulum angle of hunting motion that is passed to the input block of described free-wheel clutch from described eccentric disk, change thus converter speed ratio, described converter speed ratio is the converter speed ratio while at the rotary power that will be input to described input shaft, via described eccentric disk and described connecting member and as rotary power, being passed to the output block of described free-wheel clutch

And described stepless speed changing mechanism is configured to by described offset being set as zero can be set as converter speed ratio infinitely-great four node connecting-rod mechanism type stepless speed changing mechanisms,

The output shaft (for example, output shaft S1, S2 in embodiment described later) of described combustion engine section links with the input shaft of described stepless speed changing mechanism,

Free-wheel clutch as the inscape of described stepless speed changing mechanism is also used as respectively at described the 1st speed-changing mechanism and the 2nd speed-changing mechanism and described described the 1st free-wheel clutch and the 2nd free-wheel clutch arranged between parts that be driven in rotation.

The invention of technical scheme 6 is control methods of automobile-use drive system, it is characterized in that,

Described automobile-use drive system possesses:

The 1st combustion engine section and the 2nd combustion engine section, they produce respectively rotary power independently;

The 1st speed-changing mechanism and the 2nd speed-changing mechanism, the rotary power that they produce described the 1st combustion engine section and the 2nd combustion engine section separately is speed change output respectively;

The 1st free-wheel clutch and the 2nd free-wheel clutch, they are located at respectively described the 1st speed-changing mechanism and the 2nd speed-changing mechanism efferent separately, and there is input block, output block, and make these input blocks and output block become mutually the engaging part of lock-out state or unlock state, described the 1st free-wheel clutch and the 2nd free-wheel clutch are configured to, when being subject to rotating speed from the forward of the described input block of described the 1st speed-changing mechanism and the 2nd speed-changing mechanism rotary power separately and surpassing the rotating speed of forward of described output block, described input block and output block become lock-out state, the rotary power that will be input to thus described input block is passed to described output block,

Be driven in rotation parts, it links with the mode that shared and two output blocks of described the 1st free-wheel clutch and the 2nd free-wheel clutch, with the rotary power of the output block that will be passed to each free-wheel clutch to driving the wheel transmission; And

Clutch unit, its output shaft in described the 2nd combustion engine section and described being driven in rotation between parts, the output shaft that can cut off and connect described the 2nd combustion engine section from be driven in rotation transmission of powers between parts, different with the transmission of power carried out via described the 2nd speed-changing mechanism

The rotary power of described the 1st combustion engine section and the generation of the 2nd combustion engine section is input to described the 1st free-wheel clutch and the 2nd free-wheel clutch via described the 1st speed-changing mechanism and the 2nd speed-changing mechanism, and via the 1st free-wheel clutch and the 2nd free-wheel clutch, described rotary power is input to the described parts that are driven in rotation

At power, be imported under the described state that is driven in rotation parts, by make described clutch unit become can transferring power coupled condition, utilize the described power that is driven in rotation parts that described the 2nd combustion engine section is rotated, thereby make the starting of the 2nd combustion engine section.

The invention effect

Invention according to technical scheme 1 and technical scheme 6, due to the 1st, the 2nd each combustion engine section is equipped with respectively to speed-changing mechanism, therefore, the combination of the setting of the rotating speed by combustion engine section and the converter speed ratio of speed-changing mechanism, can control the output speed (input speed of the input block of free-wheel clutch) from speed-changing mechanism.Therefore, according to the setting of the converter speed ratio of speed-changing mechanism, can control independently the rotating speed of each combustion engine section, can make each combustion engine section respectively in operating point running efficiently, thereby can contribute to improve consumption of fuel.

In addition, in the situation that the group of " combustion engine section and speed-changing mechanism " is called to " actuating unit ", two groups of actuating units link with the same parts that are driven in rotation via free-wheel clutch respectively, therefore, only by controlling the input speed (from the rotating speed of actuating unit output) to each free-wheel clutch, just can carry out as the selection switching of the actuating unit of drive source or synthesizing from the propulsive effort of two actuating units.

In addition, owing to connecting the output shaft that is driven in rotation parts and the 2nd combustion engine section via clutch unit, therefore, by under the state to being driven in rotation parts importing power, making clutch unit become coupled condition, can utilize the power that is driven in rotation parts to make the output shaft starting rotation of the 2nd combustion engine section.Therefore, without the starting device that the special use of the 2nd combustion engine section is set (such as Starting motor etc.).When this starts, as long as needed power is started in the 2nd combustion engine section, import to and be driven in rotation parts.Mainly, because the situation that the power of the 1st combustion engine section from as drive source is transfused to is more, therefore, can utilize the power of the 1st combustion engine section.In addition, as be known as the operation of so-called " push starting (give as security hang け) ", can also utilize from driving wheel 2 sides to import to the power of the inertia traveling that is driven in rotation parts 11.In addition, in the situation that the power travelled with the motor of drive source setting as another is imported into, be driven in rotation parts, also can in the starting of the 2nd combustion engine section, utilize the power of this motor.In addition, by making clutch unit, become coupled condition, can drive the output shaft that is driven in rotation parts and the 2nd combustion engine section of wheel to couple together by being connected in, therefore, can also make the Jake brake of the 2nd combustion engine section act on the driving wheel.

According to the invention of technical scheme 2, because the propulsion source outside combustion engine section is connected in and is driven in rotation parts using main dynamotor, therefore can only utilize the EV of the propulsive effort of main dynamotor to travel.When this EV travels, in the 1st and the 2nd free-wheel clutch, because the rotating speed of the forward of output block surpasses the rotating speed of the forward of input block, therefore become the state (unlock state) of power-transfer clutch OFF, make actuating unit from being driven in rotation isolation of components.

In addition, in the situation that travel to the transition of travelling of the driving engine of the propulsive effort that utilizes combustion engine section from this EV, control the input speed of the free-wheel clutch that is attached to the combustion engine section that will utilize propulsive effort in the mode that surpasses the rotating speed that is driven in rotation parts driven by main dynamotor.Thus, can be easily driving mode be travelled and switches to driving engine and travel from EV.

In addition, rotating speed by making from combustion engine section to free-wheel clutch input with from main dynamotor to the synchronization that is driven in rotation parts and applies, can also realize utilizing the two the parallel connection of propulsive effort of the propulsive effort of combustion engine section and main dynamotor to travel.In addition, because the propulsive effort that can also utilize main dynamotor makes combustion engine section starting, therefore, also there is the starting device that the combustion engine section that can omit separately uses.In addition, by making main dynamotor bring into play function as electrical generator when the car retardation, can make the regenerative brake masterpiece for driving wheel, and can obtain regenerated electric power, therefore can also improve efficiency.

In addition, in the situation that starting the 2nd combustion engine section under the state of power is provided being driven in rotation parts by the 1st combustion engine section, thereby the possibility of the under power (rotating speed reduction) that power causes being driven in rotation parts is cut apart in existence for the rotation of the 2nd combustion engine section, but the amount that can utilize the propulsive effort of main dynamotor to cover the shortage.Thus, can suppress to be driven in rotation the change of the power of parts, thus the impact to driving wheel to transmit in the time of can being reduced in the starting of the 2nd combustion engine section.That is, can not impact and start swimmingly the 2nd combustion engine section.

In addition, in the situation that main dynamotor is connected in and is driven in rotation parts, when car retardation, make main dynamotor bring into play function as electrical generator, thereby can obtain regenerated electric power, therefore can also improve efficiency.

Invention according to technical scheme 3, when the 2nd combustion engine section rotates, so that the rotating speed of the input block of the 2nd free-wheel clutch is set converter speed ratio lower than the mode of the rotating speed of output block, thus, after just starting, power from the 2nd combustion engine section can not be passed to and be driven in rotation parts, therefore, can purchase the impact suppressed driving wheel to produce.

According to the invention of technical scheme 4, the converter speed ratio of the 2nd speed-changing mechanism is set as to infinity owing to rotating in the 2nd combustion engine section, therefore, can make the inside of speed-changing mechanism and the inertial mass in downstream thereof separate with the output shaft of the 2nd combustion engine section as far as possible.Therefore, can reduce the starting resistance of the 2nd combustion engine section.

In addition, as speed-changing mechanism, used the stepless speed changing mechanism of speed change continuously, therefore, do not change the rotating speed of combustion engine section, only by changing continuously the converter speed ratio of speed-changing mechanism under the state operative condition being maintained to high-efficiency operation point, just can control swimmingly ON/OFF(from from each actuating unit to the transmission of power that is driven in rotation parts for convenient, will based on free-wheel clutch become lock-out state or become unlock state and " connect and cut off " to power transfer path of forming be called " ON/OFF ").

About this point, in the situation that step change is cut, in order to control swimmingly the ON/OFF of free-wheel clutch from the output speed of actuating unit by change, must adjust accordingly with gear the rotating speed of combustion engine section.On the other hand, in the situation that stepless speed changing mechanism, rotating speed without change combustion engine section, only by the converter speed ratio of regulating continuously speed-changing mechanism, just can make the output speed of actuating unit change swimmingly, therefore, can carry out swimmingly the switching of drive source (combustion engine section), the switching of described drive source (combustion engine section) realizes based on actuating unit and the ON/OFF that passes through the transmission of power that the free-wheel clutch effect carries out that is driven in rotation between parts.Therefore, the running of combustion engine section can be maintained to the effective specific consumption of fuel of BSFC(: Brake Specific Fuel Consumption) good operative condition.

Invention according to technical scheme 5, by adopting following such stepless speed changing mechanism: rotatablely moving of input shaft is converted to the eccentric rotary motion of the variable eccentric disk of offset, the motion of the eccentric rotary of eccentric disk is passed to the input block of free-wheel clutch as hunting motion via connecting member, and the hunting motion of this input block is converted to the rotatablely moving of output block of free-wheel clutch, thus, only by the change offset, just converter speed ratio can be set as to infinity.Therefore, even without will as the combustion engine section of drive source from downstream (outgoing side) the inertial mass part from power-transfer clutch, by converter speed ratio is set as to infinity, the inertial mass section in downstream is separated substantially from combustion engine section in the time of also can starting in combustion engine section etc.Therefore, the inertial mass section of downstream (outgoing side) can not become the resistance in combustion engine section when starting etc., can realize swimmingly the starting of combustion engine section.

In addition, can say, by converter speed ratio is set as to infinity, this situation that even without power-transfer clutch, also can make combustion engine section separate substantially from the inertial mass section in its downstream, in the situation that be connected in main dynamotor to be driven in rotation parts and to realize that hybrid powerization is effective especially., for example, EV(battery-driven car from the propulsive effort that only utilizes main dynamotor) travel to the series connection transition of travelling, described series connection travel for: start the 1st combustion engine section, the secondary dynamotor that utilizes the drive force of the 1st combustion engine section to arrange separately, the electric power that will be sent by secondary dynamotor is supplied to main dynamotor, utilize the propulsive effort of main dynamotor to travel, in the situation that travel to the described series connection transition of travelling from described EV, although starting the 1st combustion engine section under the state that need to travel at EV, but the resistance while starting due to the 1st combustion engine section that can reduce as described above, therefore, can be smooth and easy and impact ground and travel to the series connection transition of travelling from EV.In addition, by making combustion engine section, from the inertial mass section in its downstream, separate substantially, thus, can reduce to carry out the rotational resistance of connecting while travelling, therefore can reduce the degradation of energy of connecting while travelling, thereby contribute to improve consumption of fuel.

In addition, in the situation that adopt the stepless speed changing mechanism of this form, can reduce the quantity of used gear, therefore can also reduce the degradation of energy that the engaging friction because of gear causes.

The accompanying drawing explanation

Fig. 1 is the skeleton diagram of the automobile-use drive system of an embodiment of the invention.

Fig. 2 is the cutaway view illustrated as the concrete structure of the unlimited stepless speed changing mechanism of the significant points of this system.

Fig. 3 observes the sectional view of structure of the part of this speed-changing mechanism from axis direction.

Fig. 4 is the instruction diagram of first half of the transmission principle of the converter speed ratio changeable mechanism in this speed-changing mechanism, (a) be to illustrate to make as the 1st fulcrum O3 of the center-point of eccentric disk 104 with respect to the offset r1 " larger " of the input central axis O1 as centre of gration converter speed ratio i is set to obtain to the figure of state of " less ", (b) be illustrate make offset r1 for " medium " converter speed ratio i is set to obtain to the figure of state of " medium ", (c) be to illustrate to make offset r1 " less " converter speed ratio i is set to obtain to the figure of state of " larger ", (d) be illustrate make offset r1 for " zero " so that converter speed ratio i is set as the figure of the state of " infinity (∞) ".

Fig. 5 is the instruction diagram of latter half of the transmission principle of the converter speed ratio changeable mechanism in this speed-changing mechanism, and be the figure of variation of the pendulum angle θ 2 of the offset r1 that is illustrated in the change eccentric disk input block 122 that changes the free-wheel clutch 120 in the situation of converter speed ratio i, (a) be to illustrate by making offset r1 " larger " and making converter speed ratio i " less " make the become figure of state of " larger " of the pendulum angle θ 2 of input block 122, (b) be to illustrate by making offset r1 " medium " and making converter speed ratio i " medium " make the become figure of state of " medium " of the pendulum angle θ 2 of input block 122, (c) be to illustrate by making offset r1 " less " and making converter speed ratio i " larger " make the become figure of state of " less " of the pendulum angle θ 2 of input block 122.

Fig. 6 is the instruction diagram of propulsive effort transfer principle that is configured to the described unlimited stepless speed changing mechanism of four node connecting rod mechanisms.

Fig. 7 is illustrated in this speed-changing mechanism in the situation that make the offset r1(converter speed ratio i of the eccentric disk of constant speed rotation together with input shaft) be changed to the figure of the relation between the angular velocity omega 2 of input block of the anglec of rotation (θ) of input shaft of " larger ", " medium ", " less " and free-wheel clutch.

Fig. 8 is the figure for explanation derivation principle of the output when utilizing a plurality of connecting members from input side (input shaft or eccentric disk) to outgoing side (output block of free-wheel clutch) transferring power at this speed-changing mechanism.

Fig. 9 is the instruction diagram of the action operating mode A in the drive system of present embodiment.

Figure 10 is the instruction diagram of the action operating mode B in the drive system of present embodiment.

Figure 11 is the instruction diagram of the action operating mode C in the drive system of present embodiment.

Figure 12 is the instruction diagram of the action operating mode D in the drive system of present embodiment.

Figure 13 is the instruction diagram of the action operating mode E in the drive system of present embodiment.

Figure 14 is the instruction diagram of the action operating mode F in the drive system of present embodiment.

Figure 15 is the instruction diagram of the action operating mode G in the drive system of present embodiment.

Figure 16 is the instruction diagram of the action operating mode H in the drive system of present embodiment.

Figure 17 is the instruction diagram of the action operating mode I in the drive system of present embodiment.

Figure 18 is the instruction diagram of the action operating mode J in the drive system of present embodiment.

Figure 19 is the instruction diagram of the action operating mode K in the drive system of present embodiment.

Figure 20 is the instruction diagram of the action operating mode L in the drive system of present embodiment.

Figure 21 is the instruction diagram of the action operating mode M in the drive system of present embodiment.

Figure 22 is the instruction diagram of the action operating mode N in the drive system of present embodiment.

Figure 23 is the instruction diagram of the action operating mode O in the drive system of present embodiment.

Figure 24 is the instruction diagram of the control action carried out according to operative condition when when starting in the drive system of present embodiment.

Figure 25 is the instruction diagram of the control action carried out according to operative condition when low speed driving in the drive system of present embodiment.

Figure 26 is the instruction diagram of the control action when switching (switching action) from the EV driving mode to the driving engine driving mode in the drive system of present embodiment.

Figure 27 is the instruction diagram of the control action carried out according to operative condition when middling speed is travelled in the drive system of present embodiment.

Figure 28 be in the drive system of present embodiment when the driving engine driving mode from the 1st driving engine the instruction diagram of the control action during to the switching of the driving engine driving mode of the 2nd driving engine (switching action).

Figure 29 is the instruction diagram of the control action carried out according to operative condition while running at high speed in the middle of in the drive system of present embodiment.

Figure 30 is the instruction diagram of the control action when the driving engine driving mode switching in parallel with the 1st driving engine to the 2nd driving engine of the driving engine driving mode from the 2nd driving engine (switching action) in the drive system of present embodiment.

Figure 31 is the instruction diagram of the control action carried out according to operative condition when running at high speed in the drive system of present embodiment.

Figure 32 is the instruction diagram of the control action carried out when vehicle rollback in the drive system of present embodiment.

Figure 33 is the instruction diagram of the control action carried out when vehicle stop in the drive system of present embodiment.

(a) of Figure 34 and (b) be locking by change-speed box realize can not fallback state instruction diagram.

Figure 35 is the instruction diagram of the operation of the driving cycle when low-speed region travels in the drive system of present embodiment.

Figure 36 is the instruction diagram of the operation of the driving cycle when intermediate speed region is travelled in the drive system of present embodiment.

Figure 37 is the instruction diagram of the operation of the driving cycle when high-speed region travels in the drive system of present embodiment.

Figure 38 is the instruction diagram of the joint setting range of the driving engine in the drive system of present embodiment.

Figure 39 is the skeleton diagram of the automobile-use drive system of another embodiment of the present invention.

Figure 40 is the cutaway view that the variation of automobile-use drive system of the present invention is shown.

The specific embodiment

Below, based on accompanying drawing, embodiments of the present invention are described.

Fig. 1 is the skeleton diagram of the automobile-use drive system of an embodiment of the invention, Fig. 2 is the cutaway view illustrated as the concrete structure of the unlimited stepless speed changing mechanism of the significant points of this drive system, and Fig. 3 observes the sectional view of structure of the part of this unlimited stepless speed changing mechanism from axis direction.

(integral structure)

This automobile-use drive system 1 possesses: as produce independently respectively rotary power the 1st, two driving engine ENG1, ENG2 of the 2nd combustion engine section; 1st, the 2nd change-speed box (speed-changing mechanism) TM1, TM2, they are located at the 1st, the 2nd driving engine ENG1, ENG2 downstream separately; 1st, the 2nd free-wheel clutch OWC1, OWC2, they are located at the efferent of each change-speed box TM1, TM2; Be driven in rotation parts 11, it is subject to the output rotation of transmitting via these free-wheel clutchs OWC1, OWC2; Main dynamotor MG1, it is driven in rotation parts 11 with this and is connected; Secondary dynamotor MG2, its output shaft S1 with the 1st driving engine ENG1 is connected; Battery (electricity accumulating unit) 8 can carry out the exchange of electric power between itself and main and/or secondary dynamotor MG1, MG2; And control unit 5, it is controlled driving cycle etc. by controlling various key elements.

Each free-wheel clutch OWC1, OWC2 have: input block (outer clutch race) 122; Output block (power-transfer clutch race, inner) 121; A plurality of rollers (engaging part) 123, they are configured between these input blocks 122 and output block 121, so that two parts 122,121 become mutually lock-out state or unlock state; And force application part 126, its pair roller 123 is to the direction application of force that forms lock-out state.And, when being subject to rotating speed from the forward (arrow RD1 direction) of the input block 122 of the 1st change-speed box TM1 and the 2nd change-speed box TM2 rotary power separately and surpassing the rotating speed of forward of output block 121, input block 122 and output block 121 become mutually lock-out state, thus, the rotary power that inputs to input block 122 is passed to output block 121.

1st, the 2nd free-wheel clutch OWC1, OWC2 are configured in right side and left side across differential gear 10, the 1st, the 2nd free-wheel clutch OWC1, OWC2 output block 121 separately respectively via another engaging and disengaging gear CL1, CL2 all be driven in rotation parts 11 and be connected.Engaging and disengaging gear CL1, CL2 arrange for transmission and the cut-out of controlling output block 121 separately of the 1st, the 2nd free-wheel clutch OWC1, OWC2 and being driven in rotation the power between parts 11.

Be driven in rotation parts 11 and consist of the differential gear box of differential gear 10, the rotary power that is passed to the output block 121 of each free-wheel clutch OWC1, OWC2 is passed to the driving wheel 2 of left and right via semiaxis 13L, the 13R of differential gear 10 and left and right.Differential gear box (being driven in rotation parts 11) at differential gear 10 is equipped with not shown Differential pinion or side gear, and semiaxis 13L, the 13R of left and right and the side gear of left and right link, and makes the differential rotation of

semiaxis

13L, 13R of left and right.

For the 1st, the 2nd these two driving engine ENG1, ENG2, adopted high-efficiency operation to put mutually different driving engine, the 1st driving engine ENG1 is the driving engine that free air capacity is less, the 2nd driving engine ENG2 is that free air capacity is than the large driving engine of the 1st driving engine ENG1.For example, making the free air capacity of the 1st driving engine ENG1 is 500cc, and making the free air capacity of the 2nd driving engine ENG2 is 1000cc, and making gross exhaust gas is 1500cc.Certainly, free air capacity can combination in any.

Make to be installed on main dynamotor MG1 output shaft driven wheel 15 and be located at driven gear 12 engagements that are driven in rotation parts 11, thus by main dynamotor MG1 and be driven in rotation that parts 11 connect into can transferring power.For example,, when main dynamotor MG1 brings into play function as motor, from main dynamotor MG1 to being driven in rotation parts 11 transmission of drive force.In addition, when making main dynamotor MG1 as electrical generator performance function, from being driven in rotation parts 11 to main dynamotor MG1 input power, mechanical energy is converted to electric energy.Simultaneously, to being driven in rotation parts 11 effects, regenerative brake power is arranged from main dynamotor MG1.

In addition, secondary dynamotor MG2 directly is connected with the output shaft S1 of the 1st driving engine ENG1, carries out the mutual transmission of power between secondary dynamotor MG2 and this output shaft S1.In this case, as secondary dynamotor MG2 during as motor performance function, the also output shaft S1 transmission of drive force from secondary dynamotor MG2 to the 1st driving engine ENG1.In addition, as secondary dynamotor MG2 during as electrical generator performance function, from the output shaft S1 of the 1st driving engine ENG1 to secondary dynamotor MG2 transferring power.

In possessing this drive system 1 of above key element, the rotary power that the 1st driving engine ENG1 and the 2nd driving engine ENG2 produce is imported into the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2 via the 1st change-speed box TM1 and the 2nd change-speed box TM2, and rotary power is imported into and is driven in rotation parts 11 via the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2.

In addition, in this drive system 1, at the output shaft S2 of the 2nd driving engine ENG2 and be driven in rotation between parts 11 and be provided with synchronizer gear (also being known as the clutch unit of starting clutch) 20, its can disconnect and connect this output shaft S2 from be driven in rotation between parts 11, with the transmission of power different via the transmission of power of the 2nd change-speed box TM2.This synchronizer gear 20 possesses: the 1st gear 21, and it meshes with being located at the driven gear 12 that is driven in rotation parts 11 all the time, and is configured to around the output shaft S2 of the 2nd driving engine ENG2 rotation freely; The 2nd gear 22, it is configured to rotate integratedly around the output shaft S2 of the 2nd driving engine ENG2 and this output shaft S2; And sleeve 24, by it is carried out to slide vertically, make the 1st gear 21 and the 2nd gear 22 combinations or remove.That is, synchronizer gear 20 has formed the power transfer path different from power transfer path via the 2nd change-speed box TM2, engaging and disengaging gear CL2, disconnect be connected this power transfer path on transmission of power.

(structure of change-speed box)

Next, the 1st, the 2nd these two change-speed box TM1, the TM2 that adopt in this drive system 1 are described.

1st, the 2nd change-speed box TM1, TM2 consist of the stepless speed changing mechanism of same general configuration.Thereby the stepless speed changing mechanism in this situation is to be known as IVT(Infinity Variable Transmission=in the situation that do not use power-transfer clutch to make the infinitely great speed-changing mechanism that can make output rotate to be zero mode of converter speed ratio) stepless speed changing mechanism a kind of, it is by following such unlimited stepless speed changing mechanism BD(BD1, BD2) form: can change continuously converter speed ratio (ratio=i), and the maxim of converter speed ratio can be set as to infinity (∞).

Structure shown in Fig. 2 and Fig. 3, this unlimited stepless speed changing mechanism BD comprises: input shaft 101, and it is subject to from the rotary power of driving engine ENG1, ENG2 and rotates around input central axis O1; A plurality of eccentric disks 104, they and input shaft 101 one are rotated; The connecting member 130 identical with the quantity of eccentric disk 104, described connecting member 130 is for linking input side and outgoing side; And free-wheel clutch 120, it is arranged on outgoing side.

A plurality of eccentric disks 104 form respectively round-shaped centered by the 1st fulcrum O3.The 1st fulcrum O3 along input shaft 101 circumferentially uniformly-spaced to arrange, and, the 1st fulcrum O3 sets for: can change respectively the offset r1 with respect to input central axis O1, Yi Bian and keep this offset r1, Yi Bian together rotate with input shaft 101 around input central axis O1.Therefore, a plurality of eccentric disks 104 are arranged to, respectively with the state that keeps offset r1 around input central axis O1 with the rotation of input shaft 101 eccentric rotary.

As shown in Figure 3, eccentric disk 104 consists of outer circumferential side plectane 105 and inner circumferential side plectane 108, and described inner circumferential side plectane 108 is integrally formed with input shaft 101.Inner circumferential side plectane 108 forms: the wall thickness plectane that central axis O1 departs from certain eccentric distance is inputted with respect to the central axis of input shaft 101 in center.Outer circumferential side plectane 105 forms the wall thickness plectane centered by the 1st fulcrum O3, and has the 1st circular port 106, and described the 1st circular port 106 has center in the position of departing from outer circumferential side plectane 105De center (the 1st fulcrum O3).And the periphery of inner circumferential side plectane 108 is embedded in the interior week of the 1st circular port 106 in the mode that can rotate.

And, be provided with the 2nd circular port 109 in inner circumferential side plectane 108, described the 2nd circular port 109 centered by input central axis O1 and a circumferential part towards the peripheral openings of inner circumferential side plectane 108, miniature gears 110 is accommodated in the inside of the 2nd circular port 109 in the mode freely of can rotating.The opening of the periphery of the tooth of miniature gears 110 by the 2nd circular port 109 and with formed internal gear 107 engagements of interior week of the 1st circular port 106 at outer circumferential side plectane 105.

This miniature gears 110 is arranged to input central axis O1 coaxial rotating with the central axis of input shaft 101.That is, to input central axis O1 consistent for the centre of gration of miniature gears 110 and the central axis of input shaft 101.As shown in Figure 2, miniature gears 110 by means of the actuator 180 formed by Direct Current Motor and speed reduction gearing the internal rotating at the 2nd circular port 109.At ordinary times, make the rotary synchronous ground rotation of miniature gears 110 and input shaft 101, take synchronous rotating speed as benchmark, to miniature gears 110 apply over or lower than the rotating speed of input shaft 101 rotating speeds, make thus miniature gears 110 relatively rotate with respect to input shaft 101.For example, the output shaft of miniature gears 110 and actuator 180 is configured to interlink, in the situation that the rotating photo of actuator 180 is poor for the rotation generation rotation of input shaft 101, can for example, by adopting following such speed reduction gearing (planetary wheel), realize: this speed reduction gearing makes input shaft 101 and the relative angle of miniature gears 110 change the amount that this rotation difference is multiplied by the reduction ratio gained.Now, in the situation that actuator 180 and input shaft 101 do not exist rotation poor and synchronous, offset r1 does not change.

Therefore, by miniature gears 110 is rotated, thereby making the internal gear 107 meshed with the tooth of miniature gears 110 is that outer circumferential side plectane 105 is with respect to the relative rotation of inner circumferential side plectane 108, thus, make the distance (being the offset r1 of eccentric disk 104) between miniature gears 110De center (input central axis O1) and outer circumferential side plectane 105De center (the 1st fulcrum O3) change.

In this case, set for and can make by the rotation of miniature gears 110 outer circumferential side plectane 105De center (the 1st fulcrum O3) consistent with miniature gears 110De center (input central axis O1), consistent by the Shi Liangge center, the offset r1 of eccentric disk 104 can be set as to " zero ".

And free-wheel clutch 120 has: output block (power-transfer clutch race, inner) 121, it is gone the long way round from output center axes O 2 rotations of input central axis O1; The input block of ring-type (outer clutch race) 122, it swings around output center axes O 2 by the power that is subject to hand of rotation from outside; A plurality of rollers (engaging part) 123, they are inserted between input block 122 and output block 121, for making these input blocks 122 and output block 121, become mutually lock-out state or unlock state; And force application part 126, described force application part 126 pair rollers 123 are to the direction application of force that forms lock-out state, when the forward of input block 122 (for example, in Fig. 3 by the direction shown in arrow RD1) rotating speed while surpassing the rotating speed of forward of output block 121, the rotary power that inputs to input block 122 is passed to output block 121, thus, the hunting motion of input block 122 can be converted to rotatablely moving of output block 121.

As shown in Figure 2, the output block 121 of free-wheel clutch 120 is configured to vertically all-in-one-piece parts continuously, but it is a plurality of that input block 122 is divided into vertically, and be arranged in vertically can distinguish independently with the quantity of eccentric disk 104 and connecting member 130 and swing.And, on each input block 122, roller 123 is inserted between input block 122 and output block 121.

A circumferential position, place on each input block 122 of ring-type is provided with extension 124, at this extension 124, is provided with the 2nd fulcrum O4 away from output center axes O 2.And, dispose pin 125 on the 2nd fulcrum O4 of each input block 122, utilize this pin 125 that the end of connecting member 130 (the other end) 132 is linked to input block 122 in the mode that can rotate freely.

Distolaterally have a ring portion 131 at one of connecting member 130, the interior week of the circular open 133 of this ring portion 131 is entrenched in the periphery of eccentric disk 104 in the mode freely of can rotating via bearing 140.Thereby, like this end of connecting member 130 is linked to the periphery of eccentric disk 104 in the mode freely of can rotating, and, the other end of connecting member 130 is linked to the 2nd fulcrum O4 arranged on the input block 122 of free-wheel clutch 120 in the mode that can rotate freely, formed thus with input central axis O1, the 1st fulcrum O3, the four node connecting rod mechanisms that these four nodes of output center axes O 2 and the 2nd fulcrum O4 are run-on point, impose on rotatablely moving of eccentric disk 104 by input shaft 101 and be transmitted into the hunting motion of this input block 122 to the input block 122 of free-wheel clutch 120, the hunting motion of this input block 122 is converted into rotatablely moving of output block 121.

Now, by miniature gears 110, possess the 2nd circular port 109 for taking in miniature gears 110 inner circumferential side plectane 108, possess and inner circumferential side plectane 108 is accommodated to the outer circumferential side plectane 105 of the 1st circular port 106 that can rotate and actuator 180 etc. has formed converter speed ratio changeable mechanism 112, utilize actuator 180 that the described miniature gears 110 of described converter speed ratio changeable mechanism 112 is rotated, can make thus the offset r1 of eccentric disk 104 change.And, by change offset r1, can change the pendulum angle θ 2 of the input block 122 of free-wheel clutch 120, thus, can change the ratio (converter speed ratio: ratio i) of the rotating speed of output block 121 with respect to the rotating speed of input shaft 101.; by regulating the offset r1 of the 1st fulcrum O3 with respect to input central axis O1; change the pendulum angle θ 2 of hunting motion that is passed to the input block 122 of free-wheel clutch 120 from eccentric disk 104; thus; can change converter speed ratio, this converter speed ratio is the converter speed ratio when the rotary power that will input to input shaft 101 is passed to the output block 121 of free-wheel clutch 120 as rotary power via eccentric disk 104 and connecting member 130.

In this case, output shaft S1, the S2 of the 1st, the 2nd driving engine ENG1, ENG2 and this unlimited stepless speed changing mechanism BD(BD1, BD2) input shaft 101 connect to one.In addition, as unlimited stepless speed changing mechanism BD(BD1, BD2) the free-wheel clutch 120 of structural element be also used as respectively at the 1st change-speed box TM1 and the 2nd change-speed box TM2 and be driven in rotation between parts 11 described the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2 arranged.

Fig. 4 and Fig. 5 are unlimited stepless speed changing mechanism BD(BD1, BD2) in the instruction diagram of transmission principle of converter speed ratio changeable mechanism 112.As shown in these Fig. 4 and Fig. 5, make miniature gears 110 rotations of converter speed ratio changeable mechanism 112, thereby make outer circumferential side plectane 105 with respect to inner circumferential side plectane 108 rotation, thus can eccentric adjustment dish 104 with respect to the centre of gration of input central axis O1(miniature gears 110) offset r1.

For example, as shown in Fig. 4 (a), Fig. 5 (a), in the situation that make the offset r1 " larger " of eccentric disk 104, can make the pendulum angle θ 2 of input block 122 of free-wheel clutch 120 larger, therefore can realize less converter speed ratio i.And, as shown in Fig. 4 (b), Fig. 5 (b), in the situation that make the offset r1 " medium " of eccentric disk 104, can make the pendulum angle θ 2 " medium " of the input block 122 of free-wheel clutch 120, therefore can realize moderate converter speed ratio i.In addition, as shown in Fig. 4 (c), Fig. 5 (c), in the situation that make the offset r1 " less " of eccentric disk 104, can make the pendulum angle θ 2 of input block 122 of free-wheel clutch 120 less, therefore can realize larger converter speed ratio i.In addition, as shown in Fig. 4 (d), in the situation that make the offset r1 of eccentric disk 104, be " zero ", the pendulum angle θ 2 that can make the input block 122 of free-wheel clutch 120 is " zero ", therefore can make converter speed ratio i for " infinitely great (∞) ".

Fig. 6 is the described unlimited stepless speed changing mechanism BD(BD1 that is configured to four node connecting rod mechanisms, the instruction diagram of propulsive effort transfer principle BD2), Fig. 7 is illustrated in this speed-changing mechanism BD(BD1, BD2) at the offset r1(of the eccentric disk 104 that makes constant speed rotation together with input shaft 101 converter speed ratio i) be changed to " larger ", " medium ", the figure of the relation between the angular velocity omega 2 of the anglec of rotation (θ) of the input shaft 101 in the situation of " less " and the input block 122 of free-wheel clutch 120, Fig. 8 is at this speed-changing mechanism BD(BD1 for explanation, the figure of the derivation principle of the output BD2) when utilizing a plurality of connecting members 130 from input side (input shaft 101 or eccentric disk 104) to outgoing side (output block 121 of free-wheel clutch 120) transferring power.

And as shown in Figure 6, the power that the input block 122 of free-wheel clutch 120 is subject to applying via connecting member 130 from eccentric disk 104 carries out hunting motion.When the input shaft 101 that makes eccentric disk 104 rotations rotates a circle, input block 122 reciprocally swingings of free-wheel clutch 120 once.As shown in Figure 7, irrelevant with the value of the offset r1 of eccentric disk 104, the oscillation period of the input block 122 of free-wheel clutch 120 is certain all the time.The angular velocity omega 2 of input block 122 is by eccentric disk 104(input shaft 101) spin velocity ω 1 and offset r1 determine.

One end of a plurality of connecting members 130 that input shaft 101 is connected with free-wheel clutch 120 (ring portion 131) is can rotate mode and circumferentially eccentric disk 104 links equally spaced to arrange around input central axis O1 edge freely, therefore, as shown in Figure 8, the hunting motion produced at the input block 122 of free-wheel clutch 120 due to rotatablely moving of each eccentric disk 104, occur successively in certain phase place.

Now, the power (torque) from the input block 122 of free-wheel clutch 120 to output block 121 only transmits under the condition of rotating speed of forward that rotating speed at the forward (direction of arrow RD1 Fig. 3) of input block 122 surpasses output block 121 and carries out.; in free-wheel clutch 120; mesh (locking) at the become rotating speed Gao Shicai of specific output parts 121 of the rotating speed of input block 122 via roller 123, by means of connecting member 130 by the transmission of power of input block 122 to output block 121, produce propulsive effort.

After driving that a connecting member 130 carries out finishes, the rotating speed of input block 122 is lower than the rotating speed of output block 121, and the latch-release that utilizes the propulsive effort of other connecting members 130 that roller 123 is realized, return to free state (idling conditions).This action is carried out and the corresponding number of times of the quantity of connecting member 130 successively, thus hunting motion is converted to rotatablely moving of a direction.Therefore, only having the power of the timing at the rotating speed that surpasses output block 121 of input block 122 is passed to output block 121 successively, can smoothly be just that roughly level and smooth rotary power imposes on output block 121.

In addition, unlimited stepless speed changing mechanism BD(BD1, BD2 at this four nodes connecting-rod mechanism type) in, by the offset r1 of change eccentric disk 104, can determine converter speed ratio (ratio=rotate how many when the crankshaft revolution that makes driving engine can make to be driven in rotation parts in the time of a week).In this case, by offset r1 being set as to zero, converter speed ratio i can be set as to infinity, although in the engine rotation process, the pendulum angle θ 2 that also can make to be passed to input block 122 is zero.

(the main action of control unit)

Next, the Control the content of carrying out in this drive system 1 is described.

As shown in Figure 1,5 pairs the 1st of control units, the 2nd driving engine ENG1, ENG2, main dynamotor MG1, secondary dynamotor MG2, the actuator 180 that forms unlimited stepless speed changing mechanism BD1, the BD2 of the 1st, the 2nd change-speed box TM1, TM2, engaging and disengaging gear CL1, CL2, synchronizer gear 20 etc. transmit control signal, to control these key elements, carry out thus various driving cycles (also referred to as the action operating mode) and control.Below, representational Control the content is described.

Control unit 5 has the function of selectively carrying out the following master mode of travelling: the EV master mode of travelling, and in this EV travels master mode, the EV of the propulsive effort based on main dynamotor MG1 is only travelled and is controlled; The driving engine master mode of travelling, in this driving engine travels master mode, travel and controlled the driving engine of the propulsive effort based on the 1st driving engine ENG1 and/or the 2nd driving engine ENG2 only; And the master mode of travelling of connecting, in master mode is travelled in this series connection, series connection is travelled and controlled, this series connection is travelled and is referred to: utilize the 1st driving engine ENG1 that secondary dynamotor MG2 is driven as electrical generator, consequent electric power is supplied to main dynamotor MG1 and/or battery 8, and the motor that simultaneously carries out the propulsive effort based on main dynamotor MG1 travels.In addition, also there is the function of carrying out driving mode in parallel, in described driving mode in parallel, utilize the propulsive effort of main dynamotor MG1 and the 1st driving engine ENG1 propulsive effort the two travelled.In addition, EV travel, connect travel, driving engine travels is that the dump energy (SOC) of propulsive effort and battery 8 is as requested selected and carries out.

At this, driving mode is being travelled and travelling when switching to driving engine from EV, travel and travel with carrying out to connect between driving engine travels at EV.When this series connection is travelled, the rotating speed by controlling the 1st driving engine ENG1 and/or the converter speed ratio of the 1st change-speed box TM1, controlled thus so that the rotating speed of input block 122 that is input to the 1st free-wheel clutch OWC1 lower than the rotating speed of output block 121.

In addition, in the situation that travel to the driving engine switching of travelling from series connection, rotating speed by controlling the 1st driving engine ENG1 and/or the converter speed ratio of the 1st change-speed box TM1, the rotating speed that will be input to thus the input block 122 of the 1st free-wheel clutch OWC1 changes to the value over the rotating speed of output block 121, thereby travels and be transitioned into driving engine and travel from series connection.

While in the EV driving process, starting the 1st driving engine ENG1, so that the input speed of the 1st free-wheel clutch OWC1 is no more than the mode of output speed has set under the state of the converter speed ratio of the 1st change-speed box TM1 (minimum and mainly converter speed ratio is set as to infinitely-great state in order to make rotary load), adopt the propulsive effort of secondary dynamotor MG2 to start the 1st driving engine ENG1.And, driving mode is travelled from series connection switching to driving engine and travel, stop the generating based on secondary dynamotor MG2.But, driving mode is travelled from series connection switching to driving engine and travel, for example, in the situation that the dump energy of battery 8 (SOC) is below the 1st predetermined value (a reference value: benchmark SOCt=35%), proceed the charging (the charging action by generating to battery 8) based on secondary dynamotor MG2.

Next, when the 2nd driving engine ENG2 is started, for example, as a method, the converter speed ratio of the 2nd change-speed box TM2 is controlled as such finite value (approaching the value of expected value) as far as possible: can be by transmission of power to the 2 free-wheel clutch OWC2(i ≠ ∞ from the 2nd driving engine ENG2) and the rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 lower than the rotating speed of output block 121.Perhaps, as another method, when the 2nd driving engine ENG2 is started, the converter speed ratio of the 2nd change-speed box TM2 is set as to infinity (∞), the rotating speed of the input block 122 that control is the 2nd free-wheel clutch OWC2 is lower than the rotating speed of output block 121.And, after the 2nd driving engine ENG2 starting, the converter speed ratio of the 2nd change-speed box TM2 is changed to finite value (expected value), thus the rotating speed of control inputs to the 2 free-wheel clutch OWC2.

At this, while adopting the power that is driven in rotation parts 11 to start the 2nd driving engine ENG2 under the state that the propulsive effort that is utilizing the 1st driving engine ENG1 or main dynamotor MG1 is travelled, by the output shaft S2 that makes at the 2nd driving engine ENG2 and be driven in rotation the synchronizer gear 20 arranged between parts 11 become can transferring power coupled condition, thereby adopt the power that is driven in rotation parts 11 to carry out the rotation (starting rotation) of the 2nd driving engine ENG2, start the 2nd driving engine ENG2.

In the situation that make the 2nd driving engine ENG2 starting so that drive source is switched to the 2nd driving engine ENG2 from the 1st driving engine ENG1, the power produced at the 1st driving engine ENG1 is input under the state that is driven in rotation parts 11 via the 1st free-wheel clutch OWC1, change the rotating speed of the 2nd driving engine ENG2 and/or the converter speed ratio of the 2nd change-speed box TM2, so that be input to the rotating speed that the rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 surpasses output block 121.Thus, the driving engine as drive source can be switched to the 2nd driving engine ENG2 swimmingly from the 1st driving engine ENG1.

In addition, in the situation that the 1st driving engine ENG1 and the 2nd driving engine ENG2 both sides' propulsive effort is synthesized and transmits to being driven in rotation parts 11, the rotating speed and/or the 1st of the 1st, the 2nd driving engine ENG1, ENG2, the converter speed ratio of the 2nd change-speed box TM1, TM2 are carried out to synchro control, so that be input to together with the rotating speed of two input blocks 122 of the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2, synchronously surpass the rotating speed of output block 121.

In this case, when accelerating, be not unconditionally to make two driving engine ENG1, ENG2 actions, but the output that improves another driving engine (the 2nd driving engine ENG2) under the state that a side (the 1st driving engine ENG1) is fixed in to high-efficiency operation point, response output requirement thus.

Specifically, when controlling the 1st, the 2nd driving engine ENG1, the rotating speed of ENG2 and/or the 1st, the 2nd change-speed box TM1, the converter speed ratio of TM2 is so that when being input to the rotating speed of the input block 122 of the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2 and surpassing the rotating speed of output block 121, control the 1st driving engine ENG1 and/or the 1st change-speed box TM1 under the state that operating condition is fixed on to certain limit, so that the rotating speed of the 1st driving engine ENG1 and/or moment of torsion enter into the high-efficiency operation zone, and, output requirement for the output that surpasses the operating condition acquisition fixing by this, by controlling the 2nd driving engine ENG2 and the 2nd change-speed box TM2 is tackled.

Perhaps, as the control method outside said method, also can export as requested and the 2nd large driving engine ENG2 is set as the fixation side of operating condition by free air capacity, can be also for example: in the situation that more than requiring to be output as predetermined value, the 1st driving engine ENG1 is set in to the fixation side of operating condition, in the situation that require to be output as below predetermined value, the 2nd driving engine ENG2 is set as to the fixation side of operating condition.

In addition, when vehicle rollback, make engaging and disengaging gear CL1, CL2 become off-state, thus remove the locking based on the 1st, the 2nd change-speed box TM1, TM2 and form can not fallback state.On the other hand, when going up a slope starting, make at least one engaging and disengaging gear CL1, CL2 become coupled condition.

(about the action operating mode)

Next, the action operating mode of carrying out in the drive system of present embodiment is described.

Fig. 9～Figure 23 is the amplification instruction diagram that action operating mode A～O is derived to illustrate, the instruction diagram of control action when Figure 24～Figure 33 is the control action carried out according to each operative condition or driving mode switching.And it is corresponding with the label of action operating mode A～O shown in deriving in Fig. 9～Figure 23 that the label of the top-right A～O in the frame of operating mode is respectively moved in the expression of Figure 24～Figure 33.In addition, in the figure that means the action operating mode, with the shading difference, the drive source in action is shown, with the arrow of solid line or dotted line etc., the bang path of power or flowing of electric power is shown.

In the action operating mode A shown in Fig. 9, carry out EV with the propulsive effort of main dynamotor MG1 and travel.; by from 8 couples of main dynamotor MG1 of battery, switching on to drive main dynamotor MG1; the propulsive effort of main dynamotor MG1 is passed to and is driven in rotation parts 11 via driven wheel 15, driven gear 12; and be passed to and drive wheel 2 via differential gear 10 and left and

right semiaxis

13L, 13R, travelled thus.Now, make in advance engaging and disengaging gear CL1, CL2 become dissengaged positions (OFF state).

In the action operating mode B shown in Figure 10, by secondary dynamotor MG2, utilize the propulsive effort of the 1st driving engine ENG1 to be generated electricity, the electric power that will carry out this generating generation is supplied to main dynamotor MG1 and battery 8, thereby connect, travels.Carry out the starting of the 1st driving engine ENG1 by secondary dynamotor MG2.Now, in advance the converter speed ratio of the 1st change-speed box TM1 is set as to infinity.

In the action operating mode C shown in Figure 11, utilize main dynamotor MG1 and the 1st driving engine ENG1 both sides' propulsive effort to carry out parallel connection and travel.Be driven in rotation parts 11 for the propulsive effort that makes the 1st driving engine ENG1 is passed to, control the converter speed ratio of the rotating speed of the 1st driving engine ENG1 and/or the 1st change-speed box TM1 so that the input speed of the 1st free-wheel clutch OWC1 surpasses output speed.Thus, can make the composite force of the propulsive effort of the propulsive effort of main dynamotor MG1 and the 1st driving engine ENG1 be passed to and be driven in rotation parts 11.At low speed driving or in driving at moderate speed, in the situation that the propulsive effort that requires while accelerating etc. becomes this action operating mode of large execution C.Now, make engaging and disengaging gear CL1 maintain coupled condition, make engaging and disengaging gear CL2 maintain dissengaged positions.Thus, the propulsive effort of the 1st driving engine ENG1 is passed to and is driven in rotation parts 11, prevented the towing of the 2nd free-wheel clutch OWC2 simultaneously.

In the action operating mode D shown in Figure 12, under the state travelled at the driving engine of the propulsive effort that is utilized the 1st driving engine ENG1, be the starting mode in the situation that SOC is lower.

In the action operating mode E shown in Figure 13, when slowing down, employing by main dynamotor MG1 is moved via the regeneration that is driven in rotation the next power of parts 11 transmission from driving wheel 2, the dynamotor MG1 of winner is worked as electrical generator, will be converted into electric energy via being driven in rotation the mechanical energy that parts 11 input from driving wheel 2.And then regenerative brake power is passed to and drives wheel 2, simultaneously, regenerated electric power is to battery 8 chargings.Now, disconnect in advance engaging and disengaging gear CL1, CL2.

In the action operating mode F shown in Figure 14, only utilize the propulsive effort of the 1st driving engine ENG1 to carry out driving engine and travel, simultaneously, the propulsive effort generating that utilizes the 1st driving engine ENG1 by secondary dynamotor MG2, be filled with battery 8 by the electric power of generation.In addition, according to SOC, also can stop the generating of secondary dynamotor MG2.

In the action operating mode G shown in Figure 15, utilize the propulsive effort of the 1st driving engine ENG1 to travel on one side, on one side via synchronizer gear (starting clutch unit) 20, utilize to be directed to and be driven in rotation parts 11(differential gear box) power the 2nd driving engine ENG2 is started, the amount of the output deficiency to driving wheel 2 that the load increase while making up by this starting with the propulsive effort of main dynamotor MG1 causes.In addition, secondary dynamotor MG2 utilizes the propulsive effort generating of the 1st driving engine ENG1, and battery 8 is supplied with or be filled with to the electric power of generation to main dynamotor MG1.

In the action operating mode H shown in Figure 16, utilizing the propulsive effort of the 1st driving engine ENG1 to carry out driving engine travels, and be breaking at the synchronizer gear 20(connected in action operating mode G and remove engagement), make thus to be driven in rotation parts 11(differential gear box) become with the output shaft S2 of the 2nd driving engine ENG2 the state separated, under this state, the power of the 2nd driving engine ENG2 after starting is input to the 2nd change-speed box TM2.But, in this stage, because the input speed of the 2nd free-wheel clutch OWC2 not yet surpasses output speed, therefore the output of the 2nd change-speed box TM2 is not imported into and is driven in rotation parts 11.In addition, secondary dynamotor MG2 utilizes the propulsive effort of the 1st driving engine ENG1 to be generated electricity, and the electric power of generation is filled with to battery 8.

In the action operating mode I shown in Figure 17, the driving engine that carries out the propulsive effort based on the 2nd driving engine ENG2 travels.In this action operating mode I, driven Status Change to the OD(hypervelocity of making operating mode H of the converter speed ratio of the 2nd change-speed box TM2 is driven) side, the rotating speed of the input block 122 that control is the 2nd free-wheel clutch OWC2 surpasses the rotating speed of output block 121, thus, make the power of the 2nd driving engine ENG2 be passed to and be driven in rotation parts 11(differential gear box via the 2nd change-speed box TM2), thus realize that the driving engine of the propulsive effort based on the 2nd driving engine ENG2 travels.In this action operating mode I, set up the stage of (setting up to the transmission of power that is driven in rotation parts 11) at the joint of the 2nd driving engine ENG2, the 1st driving engine ENG1 is stopped.Now, make engaging and disengaging gear CL2 maintain coupled condition, make engaging and disengaging gear CL1 maintain dissengaged positions.Thus, the propulsive effort of the 2nd driving engine ENG2 is passed to and is driven in rotation parts 11, prevented the towing of free-wheel clutch OWC1 simultaneously.

Action operating mode J shown in Figure 18 is in the situation that utilize the propulsive effort of the 2nd driving engine ENG2 to carry out the action operating mode that requires output further to rise under state that driving engine travels.In this action operating mode J, in the motoring condition based on the 2nd driving engine ENG2, further start the 1st driving engine ENG1, by the 2nd driving engine ENG2 and the 1st driving engine ENG1 both sides' propulsive effort synthetic and be passed to be driven in rotation parts 11(differential gear box).; control the rotating speed and/or the 1st of the 1st, the 2nd driving engine ENG1, ENG2, the converter speed ratio of the 2nd change-speed box TM1, TM2, so that the rotating speed of the input block 122 of the 1st, the 2nd free-wheel clutch OWC1, OWC2 synchronously surpasses the rotating speed (being driven in rotation the rotating speed of parts 11) of output block 121 together.

Action operating mode K shown in Figure 19 is in the situation that produce the action operating mode of slowing down and requiring when for example high speed is travelled.In this action operating mode K, the 1st driving engine ENG1 and the 2nd driving engine ENG2 are stopped, by main dynamotor MG1, utilized along with deceleration from driving wheel 2 to be passed the power come and to be generated electricity via being driven in rotation parts 11, the regenerated electric power generated thus is filled with to battery 8, makes the regenerative brake masterpiece for driving wheel 2 simultaneously.In addition, make synchronizer gear 20 become coupled condition, using the Jake brake of the 2nd driving engine ENG2 as Braking in driving wheel 2 simultaneously.

Action operating mode L shown in Figure 20 is in the situation that the action operating mode while requiring switching that output further rises under the state that utilizes the propulsive effort of the 2nd driving engine ENG2 to travel.In this action operating mode L, in order to make the 1st driving engine ENG1 starting, drive secondary dynamotor MG2.Now, the converter speed ratio of the 1st change-speed box TM1 is set as to infinity.And, by this action operating mode, after the 1st driving engine ENG1 starting, become the 1st, the 2 two driving engine ENG1, ENG2 both sides' propulsive effort to the action operating mode J that is driven in rotation parts 11 transmission.

In the action operating mode M shown in Figure 21, thereby synchronizer gear 20 is arranged to the state that coupled condition becomes the Jake brake that can utilize the 2nd driving engine ENG2, and, by secondary dynamotor MG2, utilize the propulsive effort of the 1st driving engine ENG1 to be generated electricity, the electric power of generation is filled with to battery 8.

In the action operating mode N shown in Figure 22, thereby synchronizer gear 20 is arranged to the state that coupled condition becomes the Jake brake that can utilize the 2nd driving engine ENG2, and, generate regenerated electric power and battery 8 is charged by main dynamotor MG1, simultaneously, by secondary dynamotor MG2, utilize the propulsive effort of the 1st driving engine ENG1 to be generated electricity, and the electric power of generation is filled with to battery 8.In addition, by synchronizer gear 20 is remained to coupled condition, make thus the 2nd driving engine ENG2 in rotating the state of standby.

Action operating mode O shown in Figure 23 is the action operating mode in docking process, in this action operating mode O, by secondary dynamotor MG2, utilizes the propulsive effort of the 1st driving engine ENG1 to be generated electricity, and the electric power of generation is filled with to battery 8.Now, by the converter speed ratio that makes the 1st, the 2nd change-speed box TM1, TM2, become infinity (∞) or cut off power-transfer clutch CL1, CL2, having suppressed the towing loss of machine of torque.

(about the control action corresponding with operating condition)

Next, utilize Figure 24～Figure 33 to describe the control action in various operating conditions.Each operating condition illustrates with the form of table, for convenience of explanation, and the serial number that the lower left mark of each frame in table is corresponding with the numeral in following parantheses.In addition, the top-right label A～O of each frame is corresponding with the enlarged drawing of Fig. 9～Figure 23, please reference as required.

(during starting)

At first, with reference to Figure 24, the control action in when starting is described.

(1) when starting acceleration is cruised slowly the time, the EV basically carried out based on action operating mode A travels.In EV travels, utilize the driven by power master's dynamotor MG1 supplied with from battery 8, only the propulsive effort by means of main dynamotor MG1 travels.

(2) in addition,, when accelerating, the series connection of carrying out based on action operating mode B is travelled.In series connection is travelled, at first, by means of secondary dynamotor MG2 starting the 1st driving engine ENG1.After the 2nd driving engine ENG1 starting, make secondary dynamotor MG2 as electrical generator performance function to be generated electricity, the electric power generated is supplied with to battery 8 and main dynamotor MG1, thus, proceed EV on one side and travel, on one side effective electric power produced by the power of the 1st driving engine ENG1 by secondary dynamotor MG2 that utilizes.Now, control the rotating speed of the 1st driving engine ENG1 and/or the converter speed ratio of the 1st change-speed box TM1, so that the input speed of the 1st free-wheel clutch OWC1 is lower than output speed.

(3) in addition, after with acceleration request is corresponding, controlling the rotating speed raising that makes the 1st driving engine ENG1, change the converter speed ratio of the 1st change-speed box TM1 so that the input speed of the 1st free-wheel clutch OWC1 surpasses output speed, thereby carry out main dynamotor MG1 and the 1st driving engine ENG1 both sides' the synthetic parallel connection of propulsive effort is travelled.In addition, in the situation that SOC is lower, also secondary dynamotor MG2 can be used as to electrical generator so that battery 8 is charged.

(4) in addition,, in the situation that SOC is lower, by the driving engine based on the 1st driving engine ENG1 shown in action operating mode D, travels and started to walk.In this case, also secondary dynamotor MG2 can be used as to electrical generator so that battery 8 is charged.

Like this, when vehicle start, according to operating condition, select and carry out: the EV driving mode that utilizes the propulsive effort of main dynamotor MG1; Utilize the series connection driving mode of the 1st driving engine ENG1, secondary dynamotor MG2 and main dynamotor MG1; Utilize the driving mode in parallel of main dynamotor MG1 and the 1st driving engine ENG1 both sides' propulsive effort; And the driving engine driving mode based on the 1st driving engine ENG1.

(for example, during low speed driving (, 0～30km/h))

Next, with reference to Figure 25, the control action during to low speed driving describes.

(5), (6) when accelerating slowly to cruise or for example unclamp Das Gaspedal deceleration is cruised slowly the time, the EV carried out based on action operating mode A travels.

(7) in addition,, when stepping on the deceleration of drg etc., moved the regeneration operating of operating mode E.

(8), (9) even when accelerating slowly to cruise and when deceleration is cruised slowly, in the situation that the dump energy of battery 8 (SOC) is below 35%, also moved the series running of operating mode B.

(10) in addition,, even in the situation that accelerate, also moved the series running of operating mode B.

(11), in the situation that acceleration request is higher, by switching to action operating mode C, utilized the parallel connection of the propulsive effort of main dynamotor MG1 and the 1st driving engine ENG1 to travel.

(switching from main dynamotor MG1 to the drive source of the 1st driving engine ENG1), when drive source is switched from main dynamotor MG1 to the 1st driving engine ENG1, carries out action control as shown in figure 26 like that.

(12), (13) at first, the situation of travelling from the EV carried out based on action operating mode A, utilize secondary dynamotor MG2 starting the 1st driving engine ENG1.Now, make the converter speed ratio infinity of the 1st change-speed box TM1, thereby the output that forms the 1st driving engine ENG1 can not be input to the state that is driven in rotation parts 11.After starting, switch to action operating mode B, carry out the series connection of the generating based on secondary dynamotor MG2 and travel.

(14) next, be transitioned into action operating mode F, control the converter speed ratio of the rotating speed of the 1st driving engine ENG1 and/or the 1st change-speed box TM1 so that the input speed of the 1st free-wheel clutch OWC1 surpasses output speed, thus by the transmission of power of the 1st driving engine ENG1 to being driven in rotation parts 11.For example, making, converter speed ratio is infinitely great and, after temporarily entering into charge mode, converter speed ratio is driven to the OD(hypervelocity) side shifting, travel and travel via the series connection driving engine be transitioned into swimmingly based on the 1st driving engine ENG1 that travels from the EV based on main dynamotor MG1.Now, in suitable timing, engaging and disengaging gear CL1 is connected to control, to avoid delay.

Based on after the setting up to the transmission of power that is driven in rotation parts 11 (switching of drive source) of the 1st driving engine ENG1, main dynamotor MG1 is stopped.But, in the situation that battery dump energy (SOC) is less, proceed generating and charging based on secondary dynamotor MG2, in the situation that battery dump energy (SOC) is sufficient, secondary dynamotor MG2 is stopped.

(for example, while driving at moderate speed (20～70km/h))

Next, with reference to Figure 27, the control action when driving at moderate speed describes.

(15), when accelerating to cruise slowly, according to action operating mode F, only utilize the monomotor of the propulsive effort of the 1st driving engine ENG1 to travel.Now, utilize the electric power produced by secondary dynamotor MG2 to charge to battery 8.The 1st driving engine ENG1, in the running of high-efficiency operation point, controls the converter speed ratio of the 1st change-speed box TM1, deals with thus operating condition.

(16), (17) slowing down slowly while cruising and while deceleration, according to action operating mode E, the 1st driving engine ENG1 stopped, and disconnects engaging and disengaging gear CL1, CL2, carries out the regeneration operating based on main dynamotor MG1.

(18) on the other hand, when accelerating, switch to action operating mode C, utilized the parallel operation of the 1st driving engine ENG1 and main dynamotor MG1 both sides' propulsive effort.Now, the driving engine that basically is based on the 1st driving engine ENG1 travels, for acceleration request, auxiliary by main dynamotor MG1.In the time can't dealing with the acceleration request while driving at moderate speed by the converter speed ratio that changes the 1st change-speed box TM1, select this control action.

(switching from the 1st driving engine ENG1 to the drive source of the 2nd driving engine ENG2)

Travel while to the driving engine that utilizes the 2nd driving engine ENG2, travelling switching at the driving engine of the propulsive effort from utilizing the 1st driving engine ENG1, carry out like that as shown in figure 28 action control.

(19), (20) at first, utilize the 1st driving engine ENG1 to carry out, under state that driving engine travels, switching to action operating mode G according to action operating mode F, make the 2nd driving engine ENG2 starting.In this case, make synchronizer gear 20 become coupled condition, under the power that is driven in rotation parts 11, make the output shaft S2 of the 2nd driving engine ENG2 rotate, start thus the 2nd driving engine ENG2.Now, making up by main dynamotor MG1 the rotating speed that is driven in rotation parts 11 caused because of starting-impact descends.That is, although only be used to be driven in rotation from being directed to of the 1st driving engine ENG1 the power of parts 11, just can start the 2nd driving engine ENG2, also can utilize propulsive effort starting the 2nd driving engine ENG2 of main dynamotor MG1.And now, as long as the converter speed ratio of the 2nd change-speed box TM2, so that the input speed of free-wheel clutch is set lower than the mode of output speed, can be set as infinity, also can be set as being compared to the slightly little value of converter speed ratio of target.In addition, in the situation that the propulsive effort of the 1st driving engine ENG1 has is more than needed, also can utilize secondary dynamotor MG2 generating so that battery 8 is charged.

(21) then, after the 2nd driving engine ENG2 starting, switch to action operating mode H, make synchronizer gear 20 for connecting dissengaged positions, main dynamotor MG1 is stopped.In this stage, the power in the 2nd driving engine ENG2 not yet enters into the state that is driven in rotation parts 11.Thus, continue the converter speed ratio of the 2nd change-speed box TM2 is changed to the OD side gradually.Now, utilize the 1st driving engine ENG1 generating by secondary dynamotor MG2, and battery 8 is charged.

(22) converter speed ratio of the 2nd change-speed box TM2 is continued to change to the OD side, make the input speed of the 2nd free-wheel clutch OWC2 surpass output speed, switch to thus action operating mode I, the propulsive effort of the 2nd driving engine ENG2 is passed to and is driven in rotation parts 11 via the 2nd free-wheel clutch OWC2.

(when high speed is travelled (50～110km/h))

Control action while next, running at high speed with reference to Figure 29 centering describes.

(23), when accelerating to cruise slowly, by action operating mode I, enforcement utilizes the monomotor of the propulsive effort of the 2nd driving engine ENG2 to travel.

(24) when accelerating, by switching to action operating mode J described later, utilize the 2nd driving engine ENG2 and the 1st driving engine ENG1 both sides' propulsive effort to travel.In addition, in the situation that SOC is lower, also secondary dynamotor MG2 can be used as to electrical generator so that battery 8 is charged.

(25) when deceleration is cruised slowly, according to action operating mode E, carry out the regeneration operating based on main dynamotor MG1, two driving engine ENG1, ENG2 are stopped.In addition, when recovering from (25) to (23), make synchronizer gear 20 become coupled condition, so that the 2nd driving engine ENG2 rotates.

(26) when slowing down, according to action operating mode K, make main dynamotor MG1 carry out regeneration operating, simultaneously, make synchronizer gear 20 become coupled condition, make thus the Jake brake based on the 2nd driving engine ENG2 effective.

(switching of from the driving engine based on the 2nd driving engine ENG2, travelling and travelling to the driving engine based on the 2nd driving engine ENG2 and the 1st driving engine ENG1)

Travel while to the driving engine of the propulsive effort that utilizes the 2nd driving engine ENG2 and the 1st driving engine ENG1 both sides, travelling switching at the driving engine of the propulsive effort from utilizing the 2nd driving engine ENG2, carry out like that as shown in figure 30 action control.

(27), (28) at first, according to action operating mode I, utilizing the 2nd driving engine ENG2 to carry out, under state that monomotor travels, utilizing secondary dynamotor MG2 starting the 1st driving engine ENG1 as shown in action operating mode L.

(29) then, as move as shown in operating mode J, control the rotating speed and/or the 1st of the 1st, the 2nd driving engine ENG1, ENG2, the converter speed ratio of the 2nd change-speed box TM1, TM2, so that the rotating speed of the input block 122 of the 1st, the 2nd free-wheel clutch OWC1, OWC2 synchronously surpasses the rotating speed (being driven in rotation the rotating speed of parts 11) of output block 121 together, thereby the driving engine that is transitioned into synthetic the 2nd driving engine ENG2 and the 1st driving engine ENG1 both sides' propulsive effort travels.

(while running at high speed (100～Vmax km/h))

Next, with reference to Figure 31, the control action when running at high speed describes.

(30), (31) when accelerating slowly to cruise and while accelerating, and according to action operating mode J, implements to utilize the driving engine of composite force of the propulsive effort of the propulsive effort of the 2nd driving engine ENG2 and the 1st driving engine ENG1 to travel.Now, the 1st driving engine ENG1 of little free air capacity is so that rotating speed or moment of torsion enter into the mode in high-efficiency operation zone controls under the fixing operating condition of the 1st driving engine ENG1 and/or the 1st change-speed box TM1 and turn round, for the output of the requirement on this, control the 2nd driving engine ENG2 and/or the 2nd change-speed box TM2 of large free air capacity.And, in the situation that SOC is lower, also secondary dynamotor MG2 can be used as to electrical generator so that battery 8 is charged.

(32) in addition,, when deceleration is cruised slowly, according to action operating mode M, make synchronizer gear 20 become coupled condition, thereby make the Jake brake of the 2nd driving engine ENG2 effective.Now, the 1st driving engine ENG1 that is helpless to slow down is used in the generating running of secondary dynamotor MG2, so that battery 8 is charged.

(33) in addition, when stepping on the deceleration of drg etc., switch to action operating mode N, make synchronizer gear 20 become coupled condition, make thus the Jake brake of the 2nd driving engine ENG2 effective.Simultaneously, by the regeneration operating of main dynamotor MG1, effect has stronger braking force.And the regenerated electric power that will be generated by main dynamotor MG1 is filled with battery 8.In addition, the 1st driving engine ENG1 that is helpless to slow down is used in the generating running of secondary dynamotor MG2, so that battery 8 is charged.

(while retreating)

Next, with reference to Figure 32, the control action when retreating (reversing) describes.

(34) when retreating, accelerate slowly to cruise, carry out EV according to action operating mode A and travel.In the time will retreating, in the 1st, the 2nd free-wheel clutch OWC1, OWC2, with be driven in rotation output block 121 that parts 11 are connected around with (the arrow RD2 direction in Fig. 3) rotation just in the opposite direction, so input block 122 and output block 121 intermesh via roller 123.When input block 122 and output block 121 engagement, the contrarotation masterpiece of output block 121 is for input block 122, but, on the extended line that arrives input central axis O1 and be positioned at the connecting member 130 shown in Figure 34 (a), input central axis O1 and the 2nd fulcrum O4 from position farthest (or, in the situation that the hand of rotation contrary with forward is the arrow RD1 direction in Fig. 3, that the connecting member 130 shown in Figure 34 (b) is by input central axis O1 and input central axis O1 and the 2nd immediate position of fulcrum O4) time, because input block 122 is linked to connecting member 130, make the hunting motion of input block 122 be limited, therefore, further heterodromous transmission is locked.Therefore, even output block 121 is wanted contrarotation, but the 1st, the 2nd change-speed box TM1, the TM2 that are formed by unlimited stepless speed changing mechanism BD1, BD2 locking, can produce thus the state that can't retreat (can not fallback state).Therefore, make in advance engaging and disengaging gear CL1, CL2 become release position to avoid locking, make main dynamotor MG1 contrarotation under this state, thereby make vehicle rollback.

(35), even in the situation that travel and retreated with EV, when the remaining capacity SOC of

battery

8,35% when following, the series connection that also switches to action operating mode B is travelled, and on one side to battery 8 chargings, makes main dynamotor MG1 contrarotation on one side.

(while stopping)

Next, with reference to Figure 33, the control action when stopping describes.

(36) during the idling when vehicle stop, switch to action operating mode O, only drive the 1st driving engine ENG1, and the converter speed ratio that for example makes the 1st change-speed box TM1 is that infinity is driven in rotation parts 11 in order to avoid propulsive effort is passed to, thereby, by secondary dynamotor MG2 generating, the electric power of generation is filled with to battery 8.

(37) in addition, in the situation that idle stop stops all propulsions source.

Above control action when usually travelling is narrated, but also can adopt following such usage according to this drive system 1.

As previously mentioned, when vehicle rollback, by making output block 121, with respect to input block 122 contrarotations, make the 1st, the 2nd change-speed box TM1, TM2 become lock-out state.The anti-back skating function (forbid glide) of the function that therefore, will become this lock-out state when going up a slope starting.That is,, when utilizing some member of sensor to detect the situation that will be started to walk at upward slope, make at least one party in engaging and disengaging gear CL1, CL2 keep coupled condition.Thus, because certain change-speed box TM1, TM2 become lock-out state, therefore, can prevent vehicle slip-down (realizing anti-back skating (hill-hold) function).Therefore, without the anti-down slip control system of carrying out other.

The relation of the rotating speed of the speed of a motor vehicle while next, utilizing Figure 35～Figure 37 to actual travel or driving engine or dynamotor, the converter speed ratio of change-speed box, battery dump energy (SOC) describes.And in the drawings, the rotating speed of the speed of a motor vehicle and main dynamotor MG1 is proportional.In addition, the rotating speed of the 1st driving engine ENG1 is consistent with the rotating speed of secondary dynamotor MG2.

(driving cycle of low-speed region (0～V2km/h))

Utilize Figure 35 to describing in the operating condition of low-speed region (0～V2km/h) while travelling.The value of V2 is for example 50km/h.

At first, when starting, the EV carried out based on main dynamotor MG1 travels., carry out the only EV based on main dynamotor MG1 and travel from zero to during predetermined speed (<V2) in the speed of a motor vehicle.Now, the 1st driving engine ENG1 and secondary dynamotor MG2 stop.In addition, the ratio that forms the 1st unlimited stepless speed changing mechanism BD1 of the 1st change-speed box TM1 is set to infinity.

Next, in EV travels, while when battery dump energy (SOC) minimizing, dropping to a reference value (SOCt=is 35% left and right for example), from EV, travelling, being transitioned into connects travels.In this stage, at first, utilize secondary dynamotor MG2 starting the 1st driving engine ENG1, the 1st driving engine ENG1 is turned round with the rotating speed that enters into the high-efficiency operation zone.Now, maintain the ratio of the 1st unlimited stepless speed changing mechanism BD1 for infinitely great.

Next, when in series running, producing acceleration request, start to improve the rotating speed of main dynamotor MG1, further reduce in this case the ratio of the 1st unlimited stepless speed changing mechanism BD1, then, by improving gradually engine speed and changing ratio, the propulsive effort of the 1st driving engine ENG1 is passed to and is driven in rotation parts 11, thereby the driving engine switched to based on the 1st driving engine ENG1 travels.In this stage, main dynamotor MG1 stops.

When the speed of a motor vehicle reaches the peak of V2(low-speed region) after, make the 1st driving engine ENG1 high-efficiency operation, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is set as to value correspondingly, carries out run at a constant speed (stable the travelling that load is less) based on the 1st driving engine ENG1.

Next, stepping on drg etc., producing slows down require after, the 1st driving engine ENG1 is stopped, the ratio of the 1st unlimited stepless speed changing mechanism BD1 being changed to infinity simultaneously, make main dynamotor MG1 carry out regeneration operating until vehicle stop.

(driving cycle of intermediate speed region (V1～V3km/h))

Utilize Figure 36 to describing in the operating condition of intermediate speed region (V1～V3km/h) while travelling.V1<V2<V3, the value of V1 is for example 20km/h, the value of V3 is for example 110km/h.

At first, in the situation that require to accelerate from vehicle velocity V 1, improve the rotating speed of main dynamotor MG1 in the starting stage, next, improve the engine speed of the 1st driving engine ENG1 and change the ratio of the 1st unlimited stepless speed changing mechanism BD1.And then, the propulsive effort of the 1st driving engine ENG1, to being driven in rotation parts 11 transmission, is travelled from the driving engine switched to based on the 1st driving engine ENG1 that travels of the series connection based on the 1st driving engine ENG1 and main dynamotor MG1.In this stage, make in advance main dynamotor MG1 stop.

After the speed of a motor vehicle is stable, make the 1st driving engine ENG1 high-efficiency operation, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is maintained to value correspondingly, carry out running at a constant speed based on the 1st driving engine ENG1.

Next, if in the situation that carry out producing further acceleration request based on running at a constant speed of the 1st driving engine ENG1, improve the rotating speed of the 1st driving engine ENG1 and increase the ratio of the 1st unlimited stepless speed changing mechanism BD1, continuation is transmitted the propulsive effort of the 1st driving engine ENG1 to being driven in rotation parts 11, simultaneously, at the ratio that makes the 2nd unlimited stepless speed changing mechanism BD2, be starting the 2nd driving engine ENG2 under infinitely-great state, at the rotating speed that improves the 2nd driving engine ENG2 and reduce to be engaged under the state of ratio of the 2nd unlimited stepless speed changing mechanism BD2, continue to increase gradually ratio, the propulsive effort of the 2nd driving engine ENG2 is transmitted to being driven in rotation parts 11.Thus, thus travel and switch to that the propulsive effort that makes the 1st driving engine ENG1 and the 2nd driving engine ENG2 both sides is synchronous and synthetic to travel to being driven in rotation the driving engine that parts 11 transmit from the driving engine of the propulsive effort based on the 1st driving engine ENG1 only.

When the speed of a motor vehicle reaches the peak of V3(intermediate speed region) after, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is set as to infinity, be driven in rotation parts 11 in order to avoid the propulsive effort of the 1st driving engine ENG1 is passed to, travel thereby switch to the only driving engine of the propulsive effort based on the 2nd driving engine ENG2.And then, make the 2nd driving engine ENG2 high-efficiency operation, the ratio of the 2nd unlimited stepless speed changing mechanism BD2 is set as to value correspondingly, carry out running at a constant speed based on the 2nd driving engine ENG2.And, at this baseline that only driving engine based on the 2nd driving engine ENG2 travels, by the 1st driving engine ENG1, drive secondary dynamotor MG2, the electric power of generation is filled with to battery 8.Now, the 1st driving engine ENG1 is in high-efficiency operation zone running (series connection), then, when battery 8 be charged to the 2nd predetermined value (for example, SOCu=80%) after, the 1st driving engine ENG1 is stopped.

Next, stepping on drg etc., sending slows down require after, the ratio of the 2nd unlimited stepless speed changing mechanism BD2 is set as to infinity, make main dynamotor MG1 carry out regeneration operating, and make the Jake brake of the 2nd driving engine ENG2 effective.After the speed of a motor vehicle descends, start the 1st driving engine ENG1, the ratio that continues to improve its rotating speed and change the 1st unlimited stepless speed changing mechanism BD1, transmit the propulsive effort of the 1st driving engine ENG1 to being driven in rotation parts 11.And then the driving engine that switches to the propulsive effort that utilizes the 1st driving engine ENG1 travels.

(driving cycle of high-speed region (V2～V4km/h))

Utilize Figure 37 to describing in the operating condition of high-speed region (V2～V4km/h) while travelling.V2<V3<V4, the value of V4 is for example 150km/h.

At first, when in the situation that only utilize the propulsive effort of the 1st driving engine ENG1 to carry out driving engine to travel while having acceleration request, improve the engine speed of the 1st driving engine ENG1 and change the ratio of the 1st unlimited stepless speed changing mechanism BD1, continuation is transmitted the propulsive effort of the 1st driving engine ENG1 to being driven in rotation parts 11, simultaneously, starting the 2nd driving engine ENG2 under the infinitely-great state of ratio that makes the 2nd unlimited stepless speed changing mechanism BD2, improve the rotating speed of the 2nd driving engine ENG2, and the ratio of the 2nd unlimited stepless speed changing mechanism BD2 is increased gradually from the state reduced, the propulsive effort of the 2nd driving engine ENG2 is transmitted to being driven in rotation parts 11.Thus, thus travel to switch to from the driving engine of the propulsive effort based on the 1st driving engine ENG1 only and travel to being driven in rotation the driving engine that parts 11 transmit the 1st driving engine ENG1 and the 2nd driving engine ENG2 both sides' propulsive effort is synchronous and synthetic.

After the speed of a motor vehicle is stable, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is set as to infinity, in order to avoid being passed to, the propulsive effort of the 1st driving engine ENG1 is driven in rotation parts 11, thereby switch to the only driving engine of the propulsive effort based on the 2nd driving engine ENG2, travel.And, make the 2nd driving engine ENG2 high-efficiency operation, the ratio of the 2nd unlimited stepless speed changing mechanism BD2 is set as to value correspondingly, carry out running at a constant speed based on the 2nd driving engine ENG2.In addition, at this baseline that only driving engine based on the 2nd driving engine ENG2 travels, by the 1st driving engine ENG1, drive secondary dynamotor MG2, the electric power of generation is filled with to battery 8.Now, the 1st driving engine ENG1 is in high-efficiency operation zone running (series connection), and then, the 1st driving engine ENG1 stops.

Next, if in the situation that carry out producing further acceleration request based on running at a constant speed of the 2nd driving engine ENG2, improve the rotating speed of the 2nd driving engine ENG2 and change the ratio of the 2nd unlimited stepless speed changing mechanism BD2, simultaneously, start the 1st driving engine ENG1, improve its rotating speed, and change the ratio of the 1st unlimited stepless speed changing mechanism BD1, together with the propulsive effort of the propulsive effort of the 1st driving engine ENG1 and the 2nd driving engine ENG2, to being driven in rotation parts 11, transmit, thereby travel and switch to the 2nd driving engine ENG2 and the 1st driving engine ENG1 both sides' propulsive effort is synchronous and synthetic and travel to being driven in rotation the driving engine that parts 11 transmit from the driving engine of the propulsive effort based on the 2nd driving engine ENG2 only.

The speed of a motor vehicle reaches the peak of V4(high-speed region) after, preferentially make the 1st driving engine ENG1 high-efficiency operation, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is set as to value correspondingly, and, the 2nd driving engine ENG2 and the 1st unlimited stepless speed changing mechanism BD1 are set as to the value that is applicable to running at a constant speed, carry out based on the 1st, the running at a constant speed of the 2nd these two driving engine ENG1, ENG2 (stable the travelling that load is less).

Next, stepping on drg etc., sending slows down require after, the ratio of the 1st unlimited stepless speed changing mechanism BD1 is set as to infinity, the 1st driving engine ENG1 is stopped, and, make main dynamotor MG1 carry out regeneration operating.And, make the Jake brake of the 2nd driving engine ENG2 effective simultaneously.After the speed of a motor vehicle descends, change the rotating speed of the 2nd driving engine ENG2 and the ratio of the 2nd unlimited stepless speed changing mechanism BD2, by the propulsive effort of the 2nd driving engine ENG2 to being driven in rotation parts 11 transmission, thereby the driving engine that switches to the propulsive effort that only utilizes the 2nd driving engine ENG2 travels.

Figure 38 is the instruction diagram of the joint setting range of the 1st, the 2nd driving engine ENG1, ENG2.Transverse axis means engine speed, and the longitudinal axis means the ratio of speed-changing mechanism.

For example, while under the state that at ratio is infinitely great (∞), starting the 1st driving engine ENG1, engine speed rises to predetermined value, under this state, make ratio when infinitely great (∞) reduces or increase engine speed, arrive speed of a motor vehicle line, driving engine output is passed to and is driven in rotation the establishment of parts 11(joint).In addition, made for the 2nd driving engine ENG2 when running, also by ratio from infinitely great (∞) or reduce gradually than the slightly large finite value of ratio of the target that will engage.Perhaps, increase engine speed.Like this, by arriving speed of a motor vehicle line, driving engine output is passed to and is driven in rotation the establishment of parts 11(joint).Therefore, the rotating speed of each driving engine ENG1, ENG2 and the ratio of speed-changing mechanism can be in the engagement range corresponding to the speed of a motor vehicle, suitably set, thereby the high-efficiency operation of driving engine can be realized.Therefore, make the 1st driving engine ENG1 in the situation that the running of high-efficiency operation point and the higher propulsive effort of requirement in advance, can be while selecting engine speed, ratio the 2nd driving engine ENG2 that turns round, thus also can separately use two driving engine ENG1, ENG2 in operation point efficiently.

Next, the mass action effect of the drive system 1 that illustrates in above content is narrated.According to the drive system 1 of present embodiment, can obtain following such action effect.

Due to the 1st, the 2nd each driving engine ENG1, ENG2 are equipped with respectively to change-speed box TM1, TM2 as speed-changing mechanism, therefore, the combination of the setting of the rotating speed by driving engine ENG1, ENG2 and the converter speed ratio of change-speed box TM1, TM2, can control the output speed (input speed of the input block 122 of the 1st, the 2nd free-wheel clutch OWC1, OWC2) from change-speed box TM1, TM2.Therefore, according to the setting of the converter speed ratio of change-speed box TM1, TM2, can control independently the rotating speed of each driving engine ENG1, ENG2, can make each driving engine ENG1, ENG2 respectively in operating point running efficiently, thereby can go far towards the improvement of consumption of fuel.

In the situation that the group of the group of " the 1st driving engine ENG1 and the 1st change-speed box TM1 " and " the 2nd driving engine ENG2 and the 2nd change-speed box TM2 " is called to " actuating unit ", 2 groups of actuating units link with the same parts 11 that are driven in rotation via free-wheel clutch OWC1, OWC2 respectively, therefore, only by controlling the input speed (from the rotating speed of actuating unit output) to each free-wheel clutch OWC1, OWC2, just can carry out as the selection switching of the actuating unit of drive source or synthesizing from the propulsive effort of two actuating units.

As the 1st and the 2nd change-speed box TM1, TM2, used respectively can stepless change unlimited stepless speed changing mechanism BD1, BD2, therefore, rotating speed without change the 1st, the 2nd driving engine ENG1, ENG2, only, by changing continuously the converter speed ratio of unlimited stepless speed changing mechanism BD1, BD2 under the state operative condition being maintained to high-efficiency operation point, just can control swimmingly the ON/OFF from each actuating unit to the transmission of power that is driven in rotation parts 11.

About this point, in the situation that step change transmission, for the output speed by the change actuating unit, control swimmingly the ON/OFF of free-wheel clutch OWC1, OWC2, must adjust accordingly with gear the rotating speed of driving engine ENG1, ENG2.On the other hand, in the situation that unlimited stepless speed changing mechanism BD1, BD2, rotating speed without change driving engine ENG1, ENG2, only by the converter speed ratio of regulating continuously unlimited stepless speed changing mechanism BD1, BD2, just can make the output speed of actuating unit change swimmingly, therefore, can carry out swimmingly the switching of drive source (driving engine ENG1, ENG2), the switching of described drive source (driving engine ENG1, ENG2) realizes based on actuating unit and the ON/OFF that is driven in rotation the transmission of power of the effect of passing through free-wheel clutch OWC1, OWC2 between parts 11.Therefore, the running of driving engine ENG1, ENG2 can be maintained to the effective specific consumption of fuel of BSFC(: Brake Specific Fuel Consumption) good operative condition.

Particularly, due to the unlimited stepless speed changing mechanism BD1, the BD2 that adopt present embodiment, therefore only by the offset r1 that changes eccentric disk 104, just can make the converter speed ratio infinity.Therefore, by making the converter speed ratio infinity, when fire an engine ENG1, ENG2 etc., can make the inertial mass section in downstream separate substantially from driving engine ENG1, ENG2.Therefore, the inertial mass section of downstream (outgoing side) can not become the resistance of driving engine ENG1, ENG2 starting, thus fire an engine ENG1, ENG2 swimmingly.In addition, in the situation that unlimited stepless speed changing mechanism BD1, the BD2 of this form, can reduce the quantity of used gear, therefore can reduce the degradation of energy that the engaging friction because of gear causes.

Due to the propulsion source of main dynamotor MG1 outside driving engine ENG1, ENG2 is connected in and is driven in rotation parts 11, therefore can only utilize the EV of the propulsive effort of main dynamotor MG1 to travel.When this EV travels, in the 1st and the 2nd free-wheel clutch OWC1, OWC2, because the rotating speed of the forward of output block 121 surpasses the rotating speed of the forward of input block 122, therefore become the state (unlock state) of power-transfer clutch OFF, can make actuating unit separate from being driven in rotation parts 11, reduce rotary load.

In addition, in the situation that travel to the transition of travelling of the driving engine of the propulsive effort that utilizes the 1st driving engine ENG1 from this EV, controlled so that be attached to the input speed of the 1st free-wheel clutch OWC1 of the 1st driving engine ENG1 that will utilize propulsive effort and surpassed the rotating speed that is driven in rotation parts 11 driven by main dynamotor MG1.Thus, can be easily driving mode be travelled and switches to driving engine and travel from EV.

In addition, by making rotating speed from from the 1st driving engine ENG1 to the 1st free-wheel clutch OWC1 input and from main dynamotor MG1 to the synchronization that is driven in rotation parts 11 and applies, can also realize utilizing the two the parallel connection of propulsive effort of the propulsive effort of the 1st driving engine ENG1 and main dynamotor MG1 to travel.In addition, owing to can also making by the propulsive effort that utilizes main dynamotor MG1 the 2nd driving engine ENG2 starting, therefore, also have advantages of and can omit the starting device that the 2nd driving engine ENG2 separately uses.In addition, when car retardation, make main dynamotor MG1 bring into play function as electrical generator, thereby can make the regenerative brake masterpiece for driving wheel 2, and regenerated electric power can be filled with to battery 8, therefore also realized the raising of efficiency.

Therefore because the output shaft S1 at the 1st driving engine ENG1 is connected with secondary dynamotor MG2, therefore, can be utilized by the starter using secondary dynamotor MG2 as the 1st driving engine ENG1, without the starting device that the 1st driving engine ENG1 is set separately uses.In addition, using this pair dynamotor MG2 as the propulsive effort by the 1st driving engine ENG1, the electrical generator of generating is utilized, and the electric power produced is supplied with to main dynamotor MG1, can also connect and travel thus.

Like this, as the propulsion source outside driving engine ENG1, ENG2, main dynamotor MG1 and secondary dynamotor MG2 be equipped with, thus, except the driving engine of the propulsive effort that only utilizes driving engine ENG1, ENG2 travels, can also select and carry out the various driving modes such as following: only utilizing the EV of the propulsive effort of main dynamotor MG1 to travel; Utilize the parallel connection of driving engine ENG1, ENG2 and main dynamotor MG1 both sides' propulsive effort to travel; And series connection is travelled, in this series connection is travelled, to utilize the propulsive effort of the 1st driving engine ENG1 and the electric power that produces is supplied to main dynamotor MG1 by secondary dynamotor MG2, with the propulsive effort by main dynamotor MG1, travel, by selecting the optimum driving mode corresponding with condition, can contribute to improve consumption of fuel.

In addition, use unlimited stepless speed changing mechanism BD1, BD2 in change-speed box TM1, TM2, thus, in switching during these driving modes, can not impact ground and swimmingly driving mode for example be travelled from the EV of the propulsive effort that utilizes main dynamotor MG1 travel or the connect driving engine that switches to the propulsive effort that utilizes the 1st driving engine ENG1 that travels.

At this, at EV, travel with during connecting of carrying out between driving engine travels travelled, so that the converter speed ratio that the input speed of the 1st free-wheel clutch OWC1 is adjusted the rotating speed of the 1st driving engine ENG1 and/or the 1st change-speed box TM1 lower than the mode of output speed (, the power of the 1st driving engine ENG1 is not directly utilized as the propulsive effort that travels) thus realize connecting and travel, then, to driving engine, travel stage of transition travelling from series connection, control the converter speed ratio of the rotating speed of the 1st driving engine ENG1 and/or the 1st change-speed box TM1 so that the input speed of the 1st free-wheel clutch OWC1 surpasses output speed, thereby the propulsive effort of the 1st driving engine ENG1 is input to and is driven in rotation parts 11, therefore, can effectively utilize from starting the 1st driving engine ENG1 to transitting to the engine power of driving engine travelling.; by connecting, travel; the engine power that is driven in rotation between parts 11 be will from the engine starting to the propulsive effort, be passed to and main dynamotor MG1 or battery 8 will be supplied to effectively to utilize as electric power; therefore; the energy of generation can be finished lavishly, thereby consumption of fuel can be contributed to improve.

Particularly, in the situation that travel to the series connection transition of travelling from the EV of the propulsive effort that only utilizes main dynamotor MG1, starting the 1st driving engine ENG1 under the state that need to travel at EV, but by adopting the 1st free-wheel clutch OWC1, and the converter speed ratio of the 1st change-speed box TM1 is set as to infinity, thereby can reduce the resistance in the 1st driving engine ENG1 when starting, therefore, can be swimmingly and impact ground and travel to the series connection transition of travelling from EV.In addition, be set as infinity by the converter speed ratio by the 1st change-speed box TM1, can make the 1st driving engine ENG1 separate substantially with the inertial mass section in its downstream, thus, can reduce to carry out the rotational resistance of connecting while travelling, therefore can reduce as far as possible the degradation of energy of connecting while travelling, thereby contribute to improve consumption of fuel.

In addition, if in advance converter speed ratio is set as to infinity, no matter how the rotating speed of the 1st driving engine ENG1 improves, and the power of driving engine ENG1 yet can not be passed to and be driven in rotation parts 11 via free-wheel clutch OWC1, therefore, can stably maintain series connection travels.

In addition, in series connection is travelled, by only regulating the input speed of the 1st free-wheel clutch OWC1, even power-transfer clutch is not set or controls especially, also the power of the 1st driving engine ENG1 can be separated from being driven in rotation parts 11, thereby make the 1st driving engine ENG1 propulsion source performance function special-purpose as generating, therefore, without according to travelling load control engine rotating speed etc., just can make driving engine ENG1 at the high-efficiency point runs steadily, thereby can greatly contribute to the improvement of consumption of fuel.

In addition, in the situation that, from series connection is travelled and is transitioned into driving engine and travels, stop the generating of secondary dynamotor MG2, therefore, can alleviate the burden of the 1st driving engine ENG1.In addition, even in the situation that from series connection is travelled and is transitioned into driving engine and travels, when battery dump energy is less, by continuing to make secondary dynamotor MG2 generate electricity to be charged, can suitably keep the charge condition of battery 8 on one side, Yi Bian alleviate the burden of the 1st driving engine ENG1.

Due to the output block 121 at the 1st, the 2nd free-wheel clutch OWC1, OWC2 and be driven in rotation between parts 11 and be provided with engaging and disengaging gear CL1, CL2, therefore, by making these engaging and disengaging gear CL1, CL2 become off-state, can utilize engaging and disengaging gear CL1, CL2 that the power transfer path (from driving engine ENG1, ENG2 to free-wheel clutch OWC1, OWC2) of upstream side is separated from the power transfer path (from being driven in rotation parts 11 to driving wheel 2) in downstream.Therefore, a driving engine in utilizing the 1st and the 2nd driving engine ENG1, ENG2 drives while being driven in rotation parts 11 via a free-wheel clutch in the 1st and the 2nd free-wheel clutch OWC1, OWC2, be breaking at another free-wheel clutch OWC1, OWC2 and be driven in rotation engaging and disengaging gear CL1, a CL2 who arranges between parts 11, therefore, can prevent the free-wheel clutch OWC1 do not driven for wheel, the towing of OWC2, thus the degradation of energy that can cut the waste.

In addition, in the situation that the input block 122 of free-wheel clutch OWC1, OWC2 and output block 121 want with respect to forward (hand of rotation when common vehicle advances) to oppositely (hand of rotation while retreating) rotation, the 1st, the 2nd change-speed box TM1, the TM2 formed by above-mentioned unlimited stepless speed changing mechanism BD1, BD2 locking and play the effect that is driven in rotation parts 11 contrarotations that stops.Therefore, by this engaging and disengaging gear CL1, CL2 are remained to release position, can make the upstream side of engaging and disengaging gear CL1, CL2 separate from being driven in rotation parts 11, thus, can avoid the locking action (also referred to as retreating interception) of change-speed box TM1, TM2.Therefore, can make to be driven in rotation parts 11 by the operation of the contrarotation to main dynamotor MG1 and retreat rotation, thereby can make vehicle rollback.

In addition, while starting to walk on uphill road, by engaging and disengaging gear CL1, CL2 are remained to coupled condition, the interception that retreats that just can utilize change-speed box TM1, TM2 locking to be risen obtains anti-back skating function (function do not glided on the Zai Po road), does not therefore need other anti-down slip control systems.

Varying in size of free air capacity by making the 1st, the 2nd driving engine ENG1, ENG2, make the high-efficiency operation point of two driving engine ENG1, ENG2 different, therefore, driving engine ENG1, ENG2 by a side higher according to the motoring condition efficiency of selection, as drive source, can realize the raising of comprehensive energy efficiency.

The establishing method of the input speed by two free-wheel clutch OWC1, OWC2, can be smooth and easy and easily from based on travelling of a driving engine, switching to travelling based on another driving engine.For example, when the control action shown in Figure 28 (while from driving at moderate speed, to high speed, travelling switching), via the 1st free-wheel clutch OWC1, the propulsive effort of the 1st driving engine ENG1 is input to be driven in rotation parts 11 to carry out under state that driving engine travels, change the rotating speed of the 2nd driving engine ENG2 and/or the converter speed ratio of the 2nd change-speed box TM2 so that be input to the mode that the rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 surpasses the rotating speed of output block 121, can easily the drive source to being driven in rotation parts 11 derivation power be switched to the 2nd driving engine ENG2 from the 1st driving engine ENG1 thus.And, only by controlling the rotating speed of inputting to the 1st, the 2nd free-wheel clutch OWC1, OWC2 via unlimited stepless speed changing mechanism BD1, BD2, just can carry out swimmingly this blocked operation with not impacting.

Control action as shown in figure 28 is such, by when starting the 2nd driving engine ENG2, the converter speed ratio of the 2nd change-speed box TM2 being set as to infinity, can make the inertial mass section in the downstream of the 2nd change-speed box TM2 separate from the 2nd driving engine ENG2.Therefore, can reduce for the 2nd driving engine ENG2 when starting by the caused resistance of inertial mass, thereby can reduce start-up energy.In addition, by drive source from the 1st driving engine ENG1 to the 2nd driving engine ENG2 switching when during starting the 2nd driving engine ENG2, can avoid power to be passed to downstream from the 2nd change-speed box TM2, therefore, in starting midway, no matter for example,, because any reason (, suddenly stepping on drg etc.) causes being driven in rotation in the situation that the rotating speed of parts 11 reduces, also can reduce starting-impact.In addition, after the 2nd driving engine ENG2 starting, change to finite value by the converter speed ratio by the 2nd change-speed box TM2, control the rotating speed that is imported into the 2nd free-wheel clutch OWC2, therefore, by making this input speed rise to the rotating speed of output block 121, can be reliably by the transmission of power of the 2nd driving engine ENG2 to being driven in rotation parts 11.

In addition, the control method during as the 2nd driving engine ENG2 starting, also can adopt other control actions.; when the 2nd driving engine ENG2 starting; starting the 2nd driving engine ENG2 under the state that the 2nd change-speed box TM2 is redefined for to suitable converter speed ratio (be the slightly large converter speed ratio of converter speed ratio that is compared to target, and be the rotating speed finite value such lower than the rotating speed of output block 121 that makes the input block 122 of the 2nd free-wheel clutch OWC2).Under these circumstances, the time till the converter speed ratio (rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 surpasses the converter speed ratio of the rotating speed of output block 121) as target can be shortened from start to be set as, therefore the responsibility to requiring can be improved.

Control action as shown in figure 30 is such, by so that input together with the rotating speed of two input blocks 122 of the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2 the mode that surpasses the rotating speed of output block 121, controlling the 1st, the 2nd driving engine ENG1, the rotating speed of ENG2 and/or the 1st, the 2nd change-speed box TM1, the converter speed ratio of TM2, can easily two driving engine ENG1 will be synthesized, the resulting larger propulsive effort of the output of ENG2 is input to and is driven in rotation parts 11, thereby can be utilized the driving engine of the 1st driving engine ENG1 and the 2nd driving engine ENG2 both sides' propulsive effort to travel.Owing to having used unlimited stepless speed changing mechanism BD1, BD2 in change-speed box TM1, TM2, therefore, now, can not impact ground travelling to the switching of travelling of the synthetic propulsive effort that utilizes two driving engine ENG1, ENG2 from the propulsive effort that utilizes a driving engine ENG2 swimmingly.

When travelling middle starting the 1st driving engine ENG1 at EV, so that the input speed of the 1st free-wheel clutch OWC1 is no more than the mode of output speed has set under the state of converter speed ratio of the 1st change-speed box TM1,, so that the propulsive effort of the 1st driving engine ENG1 is not passed to the mode that is driven in rotation parts 11 in the downstream of the 1st change-speed box TM1, start the 1st driving engine ENG1, the impact that therefore, can prevent engine starting is passed to and drives wheel 2.In addition, the load in the time of can also reducing engine starting, thus can start swimmingly.

Owing to utilizing secondary dynamotor MG2 to make the 1st driving engine ENG1 starting, therefore, without the starting device that the 1st driving engine ENG1 special use is set separately.

Owing to via synchronizer gear 20, connecting the output shaft S2 that is driven in rotation parts 11 and the 2nd driving engine ENG2, therefore, by under the state to being driven in rotation parts 11 importing power, making synchronizer gear 20 become coupled condition, can utilize the power that is driven in rotation parts 11 to make the output shaft S2 starting rotation of the 2nd driving engine ENG2.Therefore, without the starting device that the 2nd driving engine ENG2 special use is set.In addition, when this starts, as long as the 2nd driving engine ENG2 is started to needed power, import to and be driven in rotation parts 11.Mainly, due to the power of the 1st driving engine ENG1 from as drive source, to be imported into the situation that is driven in rotation parts 11 more, therefore, can utilize the power of the 1st driving engine ENG1.In addition, as be known as the operation of so-called " push starting (give as security hang け) ", can also utilize from driving wheel 2 sides to import to the power of the inertia traveling that is driven in rotation parts 11.

In addition, the starting of the 2nd driving engine ENG2 is being carried out to being driven in rotation when parts 11 are supplied with power by the 1st driving engine ENG1 basically, even but by main dynamotor MG1 when being driven in rotation parts 11 and supplying with power, by making synchronizer gear 20 become coupled condition, also can utilize to be passed to from main dynamotor MG1 the power that is driven in rotation parts 11 and to make the 2nd driving engine ENG2 rotate (what also be known as " dragging (motoring) " applies the situation of starting rotation to driving engine).In addition, in the situation that supplied with starting the 2nd driving engine ENG2 under the state of power to being driven in rotation parts 11 by the 1st driving engine ENG1, the rotation that exists for the 2nd driving engine ENG2 is cut apart power and is caused being driven in rotation the possibility of the under power (rotating speed reduction) of parts 11, but can utilize the propulsive effort of main dynamotor MG1 to make up the amount of this deficiency.Thus, can suppress to be driven in rotation the change of the power of parts 11, thus in the time of can reducing by the 2nd driving engine ENG2 starting to the impact that drives wheel to transmit.That is, can not impact and start swimmingly the 2nd driving engine ENG2.

If make immediately the propulsive effort of the 2nd driving engine ENG2 transmit to being driven in rotation parts 11 via the 2nd change-speed box TM2 and the 2nd free-wheel clutch OWC2 after the 2nd driving engine ENG2 starting, may impact driving wheel 2 to produce, but, when the 2nd driving engine ENG2 rotates, so that the rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 is set converter speed ratio lower than the mode of the rotating speed of output block 121, thus, can be by the transmission of power from the 2nd driving engine ENG2 to being driven in rotation parts 11 after just starting, therefore, can suppress the impact to driving wheel 2 to produce.Particularly, by utilizing the 2nd unlimited stepless speed changing mechanism BD2 that converter speed ratio is set as to infinity, can make the inside of speed-changing mechanism BD2 or the inertial mass in its downstream separate from the output shaft S2 of the 2nd driving engine ENG2 as far as possible, therefore, can reduce the starting resistance of the 2nd driving engine ENG2, thereby make starting become easy.

The propulsive effort of two driving engine ENG1, ENG2 is synthesized to drive when running at high speed etc. while being driven in rotation parts 11, due at least one party's the 1st driving engine ENG1, in the running of high-efficiency operation zone, therefore can contribute to improve consumption of fuel.; control the 1st driving engine ENG1 and/or the 1st change-speed box TM1 under the state that operating condition is fixed on to certain limit; so that the rotating speed of the 1st driving engine ENG1 and/or moment of torsion enter into the high-efficiency operation zone; and; output requirement for the output that surpasses the operating condition acquisition fixing by this; by controlling the 2nd driving engine ENG2 and the 2nd change-speed box TM2 is tackled, therefore can contribute to improve consumption of fuel.

Particularly, the free air capacity of the 1st driving engine ENG1 that operating condition is fixed is less than the free air capacity of the 2nd driving engine ENG2, even in the situation that require the change of output larger, also can utilize the driving engine that free air capacity is larger to deal with this requirement change, therefore can reduce the delay that reply requires.In addition, in the situation that the free air capacity of the 1st driving engine ENG1 that operating condition is fixed is larger than the free air capacity of the 2nd driving engine ENG2, the driving engine that free air capacity is larger is turned round in the high-efficiency operation scope, therefore, can more contribute to improve consumption of fuel.

In addition, can also be controlled as follows: in the situation that more than requiring to be output as predetermined value, by free air capacity, little driving engine is set as the operating condition fixation side, in the situation that require to be output as below predetermined value, by free air capacity, large driving engine is set as the operating condition fixation side, under these circumstances, the delay that reply requires can be reduced, and the improvement of consumption of fuel can be realized.

In addition, the present invention is not limited to above-mentioned embodiment, can carry out suitable distortion, improvement etc.In addition, as long as can realize the present invention, the material of each structural element in above-mentioned embodiment, shape, size, quantity, configuration position etc. can be arbitrarily, do not limit.

For example, in the above-described embodiment, show following situation: the left and right sides that respectively the 1st free-wheel clutch OWC1 and the 2nd free-wheel clutch OWC2 is configured in to differential gear 10, by each free-wheel clutch OWC1, the output block 121 of OWC2 is respectively via engaging and disengaging gear CL1, CL2 and be driven in rotation parts 11 and be connected, but another embodiment that also can be as shown in figure 39 is such, free-wheel clutch OWC1 by the 1st and the 2nd both sides, OWC2 is configured in a side of differential gear 10, and not only by these both sides' free-wheel clutch OWC1, the output block of OWC2 links up, also via an engaging and disengaging gear CL be driven in rotation parts 11 and be connected.

In addition, in the above-described embodiment, show the situation that the 1st, the 2nd change-speed box TM1, TM2 consist of the structure of the form of using eccentric disk 104, connecting member 130 and free-wheel clutch 120, but also can use other CVT iso-variable velocity mechanisms.In the situation that use other forms of speed-changing mechanism, also free-wheel clutch OWC1, OWC2 can be provided in to the outside (downstream) of speed-changing mechanism.

In addition, in the above-described embodiment, show and adopt synchronizer gear as the situation that is driven in rotation the clutch unit between parts 11 and main dynamotor MG1, but also can use the other forms of power-transfer clutch such as friction clutch.

In addition, in the above-described embodiment, the situation of the state switching that the state that the propulsive effort from utilizing the 1st driving engine ENG1 is travelled travels to the propulsive effort that utilizes the 2nd driving engine ENG2 is narrated, but also can be in contrast, the state switching that the state travelled from the propulsive effort that utilizes the 2nd driving engine ENG2 travels to the propulsive effort that utilizes the 1st driving engine ENG1.In this case, the power produced at the 1st driving engine ENG1 via the 1st free-wheel clutch OWC1 under the state that is driven in rotation parts 11 inputs, change the rotating speed of the 2nd driving engine ENG2 and/or the converter speed ratio of the 2nd change-speed box TM2, so that be input to the rotating speed that the rotating speed of the input block 122 of the 2nd free-wheel clutch OWC2 surpasses output block 121, can be switched swimmingly thus.

In addition, in the above-described embodiment, formed the structure with two driving engines and two change-speed boxs, but can be also to there is driving engine more than 3 and the structure of the change-speed box more than 3.In addition, about driving engine, use also can combine diesel motor or hydrogen engine and engine petrol.

And the 1st driving engine ENG1 of above-mentioned embodiment and the 2nd driving engine ENG2 can form in split, or, also can one form.For example, as shown in figure 40, can be using the 1st driving engine ENG1 and the 2nd driving engine ENG2 respectively as the 1st combustion engine section of the present invention and the 2nd combustion engine section and be configured in common cylinder body BL.

And the application that the application is the Japanese application for a patent for invention (Japanese Patent Application 2010-136546) based on proposing on June 15th, 2010, be incorporated herein in the content of first to file as a reference.

Label declaration

1: drive system;

2: drive wheel;

5: control unit;

8: battery (electricity accumulating unit);

11: be driven in rotation parts (differential gear box);

12: driven gear;

13L: left half axle;

13R: right axle shaft;

15: driven wheel;

20: synchronizer gear (clutch unit);

101: input shaft;

104: eccentric disk;

112: the converter speed ratio changeable mechanism;

120: free-wheel clutch;

121: output block;

122: input block;

123: roller (engaging part);

130: connecting member;

131: one ends (ring portion);

132: the other end;

133: circular open;

140: bearing;

180: actuator;

BD1: the 1st unlimited stepless speed changing mechanism;

BD2: the 2nd unlimited stepless speed changing mechanism;

CL1: engaging and disengaging gear;

CL2: engaging and disengaging gear;

ENG1: the 1st driving engine;

ENG1: the 2nd driving engine;

MG1: main dynamotor;

MG2: secondary dynamotor;

OWC1: the 1st free-wheel clutch;

OWC2: the 2nd free-wheel clutch;

S1: output shaft;

S2: output shaft;

TM1: the 1st change-speed box (the 1st speed-changing mechanism);

TM2: the 2nd change-speed box (the 2nd speed-changing mechanism);

O1: input central axis;

O2: output center axis;

O3: the 1st fulcrum;

O4: the 2nd fulcrum;

RD1: forward direction;

RD2: reverse directions;

R1: offset;

θ 2: pendulum angle;

ω 1: the spin velocity of input shaft;

ω 2: the cireular frequency of output block.

Claims

1. an automobile-use drive system,

Described automobile-use drive system possesses:

The 1st free-wheel clutch and the 2nd free-wheel clutch, they are located at respectively described the 1st speed-changing mechanism and the 2nd speed-changing mechanism efferent separately, and there is input block, output block, and make these input blocks and output block become mutually the engaging part of lock-out state or unlock state, described the 1st free-wheel clutch and the 2nd free-wheel clutch are configured to, when being subject to rotating speed from the forward of the described input block of described the 1st speed-changing mechanism and the 2nd speed-changing mechanism rotary power separately and surpassing the rotating speed of forward of described output block, described input block and output block become lock-out state, the rotary power that will be input to thus described input block is passed to described output block, and

Be driven in rotation parts, it links with the mode that shared and two output blocks of described the 1st free-wheel clutch and the 2nd free-wheel clutch, with the rotary power of the output block that will be passed to each free-wheel clutch to driving the wheel transmission,

Described automobile-use drive system is configured to, the rotary power of described the 1st combustion engine section and the generation of the 2nd combustion engine section is input to described the 1st free-wheel clutch and the 2nd free-wheel clutch via described the 1st speed-changing mechanism and the 2nd speed-changing mechanism, and via the 1st free-wheel clutch and the 2nd free-wheel clutch, described rotary power is input to the described parts that are driven in rotation

Described automobile-use drive system is characterised in that,

Described automobile-use drive system possesses clutch unit output shaft and described being driven in rotation between parts of described the 2nd combustion engine section, the output shaft that described clutch unit could cut off and connect described the 2nd combustion engine section from be driven in rotation transmission of powers between parts, different with the transmission of power carried out via described the 2nd speed-changing mechanism, and

Described automobile-use drive system possesses control unit, described control unit is configured to, at power, be imported under the described state that is driven in rotation parts, by make described clutch unit become can transferring power coupled condition, utilize the described power that is driven in rotation parts that described the 2nd combustion engine section is rotated, thereby make the starting of the 2nd combustion engine section.

2. automobile-use drive system according to claim 1, is characterized in that,

Main dynamotor is connected in the described parts that are driven in rotation.

3. automobile-use drive system according to claim 1 and 2, is characterized in that,

4. automobile-use drive system according to claim 3, is characterized in that,

Described the 2nd speed-changing mechanism forms by converter speed ratio being set as to infinitely-great stepless speed changing mechanism.

5. automobile-use drive system according to claim 4, is characterized in that,

Described stepless speed changing mechanism possesses:

Input shaft, it rotates around the input central axis by being subject to rotary power;

A plurality of the 1st fulcrums, they made progress uniformly-spaced to arrange in the week of this input shaft, and can change the offset with respect to described input central axis respectively, and, while described a plurality of the 1st fulcrum keeps this offset to rotate together with described input shaft around this input central axis;

A plurality of eccentric disks, they have described each the 1st fulcrum as center separately, and around described input central axis rotation;

Free-wheel clutch, it has: around the output block of the output center axis rotation of leaving from described input central axis; By the power that is subject to hand of rotation from outside around the input block of described output center axis oscillating; And make these input blocks and output block become mutually the engaging part of lock-out state or unlock state, described free-wheel clutch is configured to, when the rotating speed of the forward of described input block surpasses the rotating speed of forward of described output block, the rotary power that is input to described input block is passed to described output block, thus the hunting motion of described input block is converted to rotatablely moving of described output block;

The 2nd fulcrum, it is located at the position of leaving from described output center axis on described input block;

A plurality of connecting members, their ends separately are linked to the periphery of described each eccentric disk in the mode freely of can rotating centered by described the 1st fulcrum, and the other end separately is linked in the mode that can rotate freely described the 2nd fulcrum arranged on the input block of described free-wheel clutch, thus, will be imposed on by described input shaft the hunting motion that to rotatablely move to the input block transmission of described free-wheel clutch be this input block of described eccentric disk; And

The converter speed ratio changeable mechanism, it is by regulating the offset of described the 1st fulcrum with respect to described input central axis, change the pendulum angle of hunting motion that is passed to the input block of described free-wheel clutch from described eccentric disk, change thus converter speed ratio, described converter speed ratio is the converter speed ratio while at the rotary power that will be input to described input shaft, via described eccentric disk and described connecting member and as rotary power, being passed to the output block of described free-wheel clutch

The output shaft of described the 2nd combustion engine section and the input shaft of described stepless speed changing mechanism link,

Free-wheel clutch as the inscape of described stepless speed changing mechanism is also used as at described the 2nd speed-changing mechanism and described described the 2nd free-wheel clutch arranged between parts that is driven in rotation.

6. the control method of an automobile-use drive system, is characterized in that,

Described automobile-use drive system possesses: