CN1703334A - Drive apparatus for hybrid vehicle - Google Patents

Drive apparatus for hybrid vehicle Download PDF

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Publication number
CN1703334A
CN1703334A CNA028264169A CN02826416A CN1703334A CN 1703334 A CN1703334 A CN 1703334A CN A028264169 A CNA028264169 A CN A028264169A CN 02826416 A CN02826416 A CN 02826416A CN 1703334 A CN1703334 A CN 1703334A
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CN
China
Prior art keywords
dynamotor
drive
driving engine
main
casing
Prior art date
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CNA028264169A
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Chinese (zh)
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CN100469612C (en
Inventor
本池一利
多贺豊
小岛昌洋
足立昌俊
金子二郎
Original Assignee
丰田自动车株式会社
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Publication date
Priority to JP2001394459A priority Critical patent/JP3536837B2/en
Priority to JP394459/2001 priority
Priority to JP394460/2001 priority
Application filed by 丰田自动车株式会社 filed Critical 丰田自动车株式会社
Publication of CN1703334A publication Critical patent/CN1703334A/en
Application granted granted Critical
Publication of CN100469612C publication Critical patent/CN100469612C/en

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    • Y02T10/6239
    • Y02T10/641
    • Y02T10/7077

Abstract

A drive apparatus for a hybrid vehicle is provided with a first motor generator, a power splitting mechanism portion, and a second motor generator. The first motor generator functions mainly as a generator. The power splitting mechanism portion divides the power generated by the engine into power for the first motor generator and power for driven wheels. The second motor generator has an outside diameter that is smaller than the outside diameter of the first motor generator and is arranged on the side of the first motor generator opposite the engine. The second motor generator functions mainly as a motor and generates power to assist in driving the driven mechanism portion which has an outside diameter smaller than the outside diameter of the second motor generator and which reduces the rotation speed of the second motor generator is provided on the side of the second motor generator opposite the engine.

Description

Drive apparatus for hybrid vehicle

Technical field

The present invention relates to a kind of actuating device of hybrid vehicle, preferably be applicable on the hybrid vehicle that has driving engine and motor, this hybrid vehicle has two kinds to have propulsion source of different nature, optimally makes up the propulsive effort that these two kinds of propulsions source produce in all cases and travels by using.

Background technology

In recent years, a kind of hybrid vehicle with driving engine and motor---two kinds have propulsion source of different nature---has obtained exploitation and has put in the practical application.In this hybrid vehicle, optimally make up this two kinds of propulsive efforts that propulsion source produces in all cases by using, the energy of each propulsion source can remedy the shortcoming of another propulsion source.Therefore, the tractive performance of vehicle is guaranteed that fully fuel consumption rate and emission behavior also are improved greatly.

For the actuating device that is applied on this hybrid vehicle, multiple scheme has been proposed.Wherein a kind of scheme comprises uses a dynamotor, a power splitting mechanism, and another dynamotor.First dynamotor is mainly as generating.Power splitting mechanism comprises a cover compound planet gear, and the power distribution that driving engine is produced is the power of supplying with first dynamotor and the power of supplying with drive wheels.Second dynamotor mainly is as an electrical motor, produces power and comes auxiliary drive wheels.The power of this power and driving engine output is different.

In this actuating device, the part power that is distributed by power splitting mechanism is mechanically transmitted on the wheel, and with the drive wheels rotation, remaining power then is passed in first dynamotor.First dynamotor transmits the power of coming by using, and produces electric energy and offers second dynamotor.Use second dynamotor of this electric energy to act as an electrical motor.The power that second dynamotor produces is added on the power that is distributed by power splitting mechanism, and is passed on the drive wheels, thereby the output of auxiliary engine drives drive wheels.

In addition, as the placement technique of each parts in the drive apparatus for hybrid vehicle, first dynamotor, second dynamotor and compound planet gear are disposed on the line, and this technology once had open at Japanese patent application 6-144020.The advantage of this arrangement is, its structure, particularly its external diameter are more and more littler on the direction away from driving engine, thereby can make whole device very compact.

For this drive apparatus for hybrid vehicle, can add a speed reduction gearing, to reduce the torque that rotating speed improves second dynamotor that is used as electrical motor with imagining.But in above-mentioned disclosed this actuating device, speed reduction gearing is added on the compound planet gear and as the arrangement of power splitting mechanism, does not at length provide.Therefore, require to have a kind of actuating device that comprises that speed reduction gearing whole device partly can both be very compact.

Summary of the invention

Consider above-mentioned deficiency, an object of the present invention is to provide a kind of drive apparatus for hybrid vehicle, a speed reduction gearing wherein can be installed, and can make whole device very compact simultaneously.

Hereinafter, explanation is realized the method and the effect of above-mentioned purpose.

Realize according to an aspect of the present invention, a kind of drive apparatus for hybrid vehicle of above-mentioned purpose, has first dynamotor that act as electrical motor or electrical generator, a power splitting mechanism, this mechanism becomes to be input to the power of first dynamotor and the power of drive wheels with the power distribution of driving engine; Second dynamotor that is arranged in first dynamotor one side relative with driving engine, this dynamotor is used as electrical motor or electrical generator, and producing power (power of this power and driving engine is different) with drive wheels, its external diameter is littler than the external diameter of first dynamotor; Also have a speed reduction gearing that is arranged in second dynamotor one side relative with driving engine, its external diameter is littler than the external diameter of second dynamotor, and effect is to reduce rotating speed to improve the torque of second dynamotor.

According to a kind of drive apparatus for hybrid vehicle of said structure, the power that driving engine produced is by power distributor gears separated into two parts.Part power is mechanically transmitted on the drive wheels with rotating-wheel, and all the other power then are delivered to first dynamotor.First dynamotor uses the power that transmits and come, and act as an electrical generator, produces electric energy and provides it to second dynamotor.Second dynamotor uses this electric energy, act as an electrical motor.The power that second dynamotor produces is added on the power that is distributed by power splitting mechanism, and is passed on the drive wheels, thereby the output of auxiliary engine drives drive wheels.

According to this drive apparatus for hybrid vehicle, in all parts, dynamoelectric and power generation unit and speed reduction gearing are by such being disposed in order at least: to away from driving engine one side, is first dynamotor in proper order from close driving engine one side, second dynamotor, speed reduction gearing.Except the external diameter of second dynamotor than the external diameter of first dynamotor little, the external diameter of the speed reduction gearing also external diameter than second dynamotor is little.Therefore, littler than the external diameter of first dynamotor by the external diameter that makes power splitting mechanism, whole device is rendered as cone-shaped, and its external diameter is more and more littler in the process away from driving engine.In this way, this invention according to the above description can be brought speed reduction gearing in the actuating device into, and makes whole device keep compact.

In addition, by the actuating device that this compact way produces, the installability on hybrid vehicle is particularly splendid.Especially, the actuating device of whole hybrid vehicle is identical with an automatic transmission with hydraulic torque converter that has torque converter and gearshift in shape.Therefore, be designed to identically by actuating device, this actuating device can be installed in that former preparation is used to install in the pipeline of automatic transmission with hydraulic torque converter on the vehicle with the automatic transmission with hydraulic torque converter size with hybrid vehicle.Like this, the automatic transmission with hydraulic torque converter that can replace just, and this actuating device is installed in this floor tunnel.

Drive apparatus for hybrid vehicle according to a further aspect of the invention, its outer shape is along with more and more narrow away from driving engine, also has a core case that is used to install dynamotor and power splitting mechanism in addition, a casing that separates and be used to install speed reduction gearing with core case, and an attaching parts that connects this casing and core case.

According to this structure, when this actuating device being expanded to when being applied on a series of hybrid vehicle, if the engineering factor such as speed ratio such as speed reduction gearing all are consistent, can use these dynamotors, power splitting mechanism and other similar parts so---because they all are common.At this, the casing that speed reduction gearing is installed is separate with the core case that dynamotor and power splitting mechanism are installed, and these two casings can interconnect or separate.Therefore, by prepare a unit that speed reduction gearing is installed for each hybrid vehicle,, just can only need with a kind of core cell that dynamotor and power splitting mechanism are installed to all types of hybrid vehicles.Then, when assembling multiple actuating device, just can be attached to simply on the public core cell speed reduction gearing unit of coupling separately with this actuating device in composing room.

In addition, a kind of drive apparatus for hybrid vehicle according to a further aspect of the invention, be further provided with first attaching parts that first cable and first dynamotor are electrically connected, and second attaching parts that second cable and second dynamotor are electrically connected.In addition, power splitting mechanism is arranged between first dynamotor and second dynamotor, and comprises that a compound planet gear, this compound planet gear have an external diameter than first dynamotor and the little gear ring of the second dynamotor external diameter.First attaching parts and second attaching parts are arranged in the radially outer space between first dynamotor and second dynamotor, outside the gear ring.

According to this structure, power splitting mechanism has one and is arranged in two compound planet gears between the dynamotor.In addition, it is all littler than the external diameter of two dynamotors that the external diameter of gear ring---determines the outside dimension of whole compound planet gear---.Therefore, the radially outer place between two dynamotors, outside the gear ring has a space.This invention according to the above description, first attaching parts that first cable and first dynamotor are electrically connected is arranged in this space.In addition, second attaching parts that second cable and second dynamotor are electrically connected also is arranged in this space.In this way, two attaching partss are arranged in the space between the dynamotor, can have effectively utilized the space.Therefore, in the compactedness that does not influence actuating device, can two attaching partss are all disposed therein.

A kind of drive apparatus for hybrid vehicle according to a further aspect of the invention is further provided with a drive case that first dynamotor and second dynamotor are installed, and its external diameter is more and more littler in the direction away from driving engine; An outlet is arranged on this drive case and from driving engine and wriggles away, and first cable that connects first dynamotor extends out from drive case by this outlet; Also have another outlet, be arranged on first outlet, one side relative on the drive case with driving engine, and parallel with first outlet, and second cable that connects second dynamotor extends out from drive case by this outlet.

According to this structure, first cable that connects first dynamotor extends out from drive case by first outlet.Equally, second cable that connects second dynamotor extends out from drive case by second outlet.At this, first outlet and second exports and all to be arranged on the drive case, and this drive case its profile on away from the direction of driving engine is more and more narrow.And second outlet is positioned on relative with driving engine first outlet, one side,, is positioned on the drive case diameter than on the littler position of the first exit diameter that is.In addition, first outlet and second outlet are all wriggled away from driving engine and are parallel to each other.Therefore, when the communication port of two cables all was positioned on the side of the actuating device relative with driving engine, two cables can both stretch out and noninterference from drive case together, and stretch on the communication port always.

In addition, a kind of drive apparatus for hybrid vehicle according to a further aspect of the invention further has a drive case, and the profile of this casing is more and more narrow on the direction away from driving engine, and first dynamotor and second dynamotor is installed interior; First casing consists of a drive case part, and has first main portion that is fixed on the driving engine and be formed on the interior the first installation part of first main portion, and this mounting portion is used to install first dynamotor; Second casing consists of drive case another part, and interconnects with first casing; First case lid is arranged on close driving engine one side of first electrical generator in first main portion, is used for cover cap first dynamotor; First retaining element is used for and will be formed on first flange connection on the first case lid outer edge portion to the first installation part.

According to this structure, in this actuating device, the drive case of dynamotor is installed, its profile is more and more narrow on the direction away from driving engine.First casing that forms a drive case part is fixed on the driving engine at the first main portion place, and this main portion is the outside (shell) of first casing.Dynamotor is installed in the first installation part that is formed in first main portion.Equally, form second casing of a drive case part, also as first casing, be connected on first main portion.

The case lid of cover cap dynamotor is arranged in first main portion.This case lid is fixed on the first installation part by first retaining element that is formed at a flange on this case lid outer edge part.At this, when not using case lid, the radial dimension of first casing (external diameter) is used as reference value.In this case, the external diameter of first casing is actually by the thickness of first main portion and determines.Contrast therewith, when using case lid, the external diameter of first casing is to determine by the gap between the width of the thickness of above-mentioned first main portion, case lid upper flange plate and this flange and the first main portion inside face.

Consider this point, according to above-mentioned the present invention, this case lid is arranged in the interior dynamotor of first main portion near on the side of driving engine.First main portion is bigger than the most of locational external diameters of first main portion at the external diameter at this place.Especially, first main portion is bigger than its diameter at the place, end of relative driving engine one side of the first installation part near the diameter at the place, end of driving engine one side at corresponding the first installation part.The size relationship of the distance between the inside face of the inside face of the first installation part and first main portion and above-mentioned the same.Like this, because this distance is always greater than the width of first flange on first case lid and the summation in the gap between first flange and first main portion, therefore, even first main portion is not stretching out in the radial direction, first case lid also can be arranged in first main portion, and is secured on the first installation part by first tightening member.

In this way, just can prevent that the external diameter of first casing from becoming bigger behind additional first case lid, thereby keep the original profile of drive case, promptly on direction, become more and more narrow away from driving engine.The profile that this profile and the automatic transmission with hydraulic torque converter with a turbine transformer and a speed-changing mechanism---are installed on a kind of vehicle of the FR of having type drive system---is the same.Like this, just automatic transmission with hydraulic torque converter can be substituted by this actuating device and be arranged in and be generally used for installing in the floor tunnel of automatic transmission with hydraulic torque converter, thereby improve the installability of this actuating device on vehicle.

In addition, this drive apparatus for hybrid vehicle further has second main portion, and this second main portion has second casing that is connected on first main portion; Second mounting portion is formed in second main portion, and is used to install second dynamotor that act as electrical motor or electrical generator; Second case lid is arranged on close driving engine one side of second electrical generator in second main portion, is used for cover cap second dynamotor; Second retaining element is used for and will be formed on second flange connection on the second case lid outer edge portion to second mounting portion.

According to this structure, in this actuating device, form second casing of a drive case part, also as first casing, be connected on first main portion at the second main portion place as the outside (shell) of second casing.Second dynamotor is installed in second mounting portion that is formed in second main portion.

The case lid of cover cap second dynamotor is arranged in second main portion.This case lid is connected on second mounting portion by second retaining element that is formed at a flange on this case lid outer edge part.At this, when not using case lid, the radial dimension of second casing (external diameter) is used as reference value.In this case, the external diameter of second casing only is actually and determines by the thickness of second main portion.Contrast therewith, when using case lid, the external diameter of second casing is to determine by the gap between the width of the thickness of above-mentioned second main portion, case lid upper flange plate and this flange and the second main portion inside face.

In the actuating device of this hybrid vehicle, second case lid is arranged in interior second dynamotor of second main portion near on the side of driving engine.Second main portion is bigger than the most of locational external diameters of second main portion at the external diameter at this place.Especially, the diameter at the place, end of second main portion close driving engine one side in corresponding second mounting portion is bigger than its diameter at the place, end of relative driving engine one side in corresponding second mounting portion.The size relationship of the distance between the inside face of the inside face of second mounting portion and second main portion and above-mentioned the same.Like this, because this distance is always greater than the width of second flange on second case lid and the summation in the gap between second flange and the second main portion inside face, therefore, even second main portion is not stretching out in the radial direction, second case lid also can be arranged in second main portion, and is secured on second mounting portion by second tightening member.In this way, just can prevent that the external diameter of second casing from becoming bigger behind additional second case lid, thereby further improve the installability of this actuating device on vehicle.

In this drive apparatus for hybrid vehicle, speed reduction gearing comprises a compound planet gear, and be arranged in the coaxial axis of first dynamotor, second dynamotor and power splitting mechanism on.

According to this structure,, therefore can obtain a bigger reduction ratio because this speed reduction gearing comprises a compound planet gear.In addition, be arranged on the same axis, the radial dimension of this actuating device is minimized by first dynamotor, second dynamotor, power splitting mechanism and the speed reduction gearing that will consist of this actuating device together.

Description of drawings

Fig. 1 is the schematic diagram of looking up of a hybrid vehicle, and this hybrid vehicle is equipped with an actuating device of first embodiment of the invention;

Fig. 2 is the cross-sectional figure according to first embodiment actuating device;

Fig. 3 is that the core case of actuating device is seen lateral plan in the past from output shaft one side;

Fig. 4 is the enlarged drawing of actuating device part as shown in Figure 2;

Fig. 5 is the enlarged drawing of actuating device part as shown in Figure 2; And

Fig. 6 is the enlarged drawing of actuating device part as shown in Figure 2.

The specific embodiment

Hereinafter, first exemplary embodiments of the present invention, a kind of hybrid vehicle with drive system of engine behind front wheel, rear drive will describe in conjunction with drawing.Fig. 1 be a kind of hybrid vehicle look up from the bottom functional block diagram.This hybrid vehicle 11 as shown in the figure has two kinds of propulsions source, and a driving engine 12 and a motor have different characteristics respectively.This hybrid vehicle 11 is by the optimum assembly with the corresponding current working of propulsive effort of two kinds of propulsions source, is delivered to drive wheel 13 and travels.In the figure, left is the front portion of this hybrid vehicle 11, and right-hand is the rear portion.

15, one difies 16 of 14, one transmission shafts of an actuating device are arranged between driving engine 12 and drive wheel 13, and parts such as a pair of axle drive shaft 17.This actuating device 14 will be described in detail later.This transmission shaft 15 is delivered to the output of actuating device 14 on the diff 16.This diff 16 is that the power with transmission shaft 15 carries out difference and is delivered to two differential gears on the axle drive shaft 17.Each axle drive shaft 17 is the axles that the transmission of power through diff 16 difference arrived drive wheels 13.

In these parts, actuating device 14 and transmission shaft 15 are disposed in the floor tunnel 19 on hybrid vehicle 11 floors 18.Floor tunnel 19 is furnished with this part of actuating device 14, and is the wideest near the place of driving engine 12, and more and more narrow on the direction away from driving engine 12.On a vehicle with FE/RD type drive system, the space of floor tunnel 19 is used for installing actuating device 14 and transmission shaft 15.It is narrower that this space ratio has the installing space of vehicle of other type drive system (as the engine behind front wheel before driving, i.e. the system of FF type).

As shown in Figure 2, the drive case 21 of this actuating device 14 comprises a core case 22 of forming first casing 23 and second casing 24, and the 3rd casing 25.The axis direction L that these casings of from 23 to 25 are along bent axle 47---output shaft of driving engine 12---, towards away from sequentially arranging near the opposite side (right side of Fig. 2) of driving engine 12 1 sides (left side of Fig. 2).

Comprise first main portion 23a with reference to figure 4, the first casings 23, this part is the Outboard Sections (shell) of first casing 23, and a mounting portion 23b, and this part is integrally formed in the inboard of first main portion 23a.First main portion 23a has the profile of a column, and its side end near driving engine 12 is fixed on the driving engine 12 by a tightening member (not drawing a similar bolt among the figure).The diameter of first main portion 23a (external diameter and internal diameter) is maximum in the end near driving engine 12 1 sides, and reduces gradually on the direction away from driving engine 12, up to the centre portion on axis direction.First main portion 23a is on the end of drive wheel one side, and its diameter is bigger slightly than the centre portion on axis direction, is the space (being described further below) in order to guarantee to install first cable 63.

First mounting portion 23b is one side closed column, and its internal diameter equates everywhere.The-individual mounting portion 23b in the end of driving engine one side and unlike first main portion 23a extend in the end of driving engine one side (to drive wheels 13 1 sides) so long.In addition, first mounting portion 23b also gets so long unlike first main portion 23a in the end extension (to driving engine 12 1 sides) of drive wheel one side in drive wheel one side.The end of first mounting portion 23b is supported by first supporting walls 31, this supporting walls and axis L-orthogonal, and be positioned at first mounting portion 23b on the end of drive wheel one side.

As illustrated in Figures 5 and 6, second casing 24 comprises second main portion 24a, and this part is the Outboard Sections (shell) of second casing 24, and second mounting portion 24b, and this part is integrally formed in the inboard of second main portion 24a.Second main portion 24a has the profile of a column, and its end near driving engine 12 1 sides is fixed on first main portion 23a by a tightening member (not drawing a similar bolt among the figure).The diameter of second main portion 24a (external diameter and internal diameter) is maximum in the end near driving engine 12 1 sides, and reduces gradually on the direction away from driving engine 12, up to the centre portion on axis direction.

Second mounting portion 24b is one side closed column, and its diameter is slightly littler than the diameter of above-mentioned first mounting portion 23b.The internal diameter of second mounting portion 24b equates everywhere.Second mounting portion 24b in the end of driving engine one side and unlike second main portion 24a extend in the end of driving engine one side (to drive wheels 13 1 sides) so long.In addition, second mounting portion 24b is identical in the end of drive wheel one side about axis L and second main portion 24a in the end of drive wheel one side.The end of second mounting portion 24b is supported by second supporting walls 38, this supporting walls and axis L-orthogonal, and be positioned at second mounting portion 24b on the end of drive wheel one side.

Be taper with reference to figure 6, the three casings 25, its diameter (external diameter and internal diameter) is more and more littler on the direction away from driving engine 12.The 3rd casing 25 is fixed on second casing 24 by a tightening member 26 (as bolt) in the end of driving engine one side.

The drive case of being made up of to the 3rd casing 25 first casing 23 21 in this way, its profile is more and more narrow on the direction away from driving engine 12.This profile and an appearance similar of being furnished with the typical automatic transmission with hydraulic torque converter of turbine transformer and speed-changing mechanism, this representative type automatic transmission with hydraulic torque converter is installed on a kind of vehicle of the FR of having type drive system.

With reference to figure 2, on the axis L of drive case 21, from near a side of driving engine 12 to (promptly away from a side of driving engine 12, side to drive wheel 13), first dynamotor (hereinafter will be cited as " MG1 "), 27, the second dynamotors of a power splitting mechanism (hereinafter will be cited as " MG2 ") and a speed reduction gearing 28 on a line, have been disposed in order.MG1 and MG2 are the structures of motor, and as ac synchronous motor, can work according to actual conditions is electrical generator or electrical motor.But in the cruising process of vehicle, the MG1 groundwork is an electrical generator, utilizes the power of driving engine 12 to produce electric energy.In addition, the MG2 groundwork is an electrical motor, produces power and comes driving engine 12 is assisted.In other words,, will provide power where necessary and the power of driving engine 12 is assisted, thereby act as the auxiliary power source of driving engine 12, increase the propulsive effort of vehicle when MG2 work during for electrical motor.Certainly, MG1 and MG2 can not work simultaneously and be electrical generator or electrical motor, but each can only be worked and is a kind of function wherein.

To describe MG1 and MG2 below.With reference to figure 4, in first casing 23, first mounting portion 23b on a side of driving engine 12, first case lid 29 with axis L-orthogonal is arranged.First case lid 29 is big must to be enough to seal the opening portion of first mounting portion 23b in driving engine one side.External margin at first case lid 29 is formed with first flange 29a, and first flange 29a of first case lid 29 and first mounting portion 23b are overlapping in the end of driving engine one side.Then, first bolt 30---first tightening member as in a plurality of bolts of connecting device (Fig. 4 only drawn one of them) inserts from a side of driving engine 12, and is screwed among the 23b of first mounting portion by first flange 29a.In this way, first case lid 29 is fastened on first casing 23, thereby makes first mounting portion 23b and first case lid 29 form an enclosure space, in order to parts such as installation MG1.

At this, to guarantee predetermined strength in order to form one simultaneously for the through hole that first bolt 30 is installed, first flange 29a must have certain width (that is, having certain thickness in the radial direction) w1.In addition, in order to tighten or to unscrew first bolt 30, between the inside face of the inside face of first flange 29a and first main portion 23a, must have certain space.For the facility that illustrates, this space or gap will be referred to as " gap g1 " hereinafter.Relevant for this, according to this exemplary embodiments, the distance D 1 of first mounting portion 23b between the respective inner surfaces of the end inside face of drive wheel one side and first main portion 23a be less than width w1 and gap g1 and.But, the distance D 1 of first mounting portion 23b between the respective inner surfaces of the end inside face of driving engine one side and first main portion 23a be greater than width w1 and gap g1 and.This is because the internal diameter of first mounting portion 23b equates that everywhere the diameter of first main portion 23a is then more and more littler on the direction away from driving engine 12.Then, after first case lid 29 is fixed on first casing 23, between the inside face of the inside face of first flange 29a and first main portion 23a, form a gap.

MG1 has first stator 32 and first rotor 33.First stator 32 is positioned at the place near first mounting portion 23b inside face, and is fixed on first supporting walls 31 by a tightening member 34 (as bolt).In addition, 33 of first rotors are supported on rotationally by a bearing 35 on the core of the core of first case lid 29 and first supporting walls 31.Then, by the aforesaid stator coil 36 that is installed in first stator 32 of the MG1 in first casing 23 is encouraged, make first rotor 33 rotations.

As illustrated in Figures 5 and 6, in second casing 24, second mounting portion 24b on a side of driving engine 12, second case lid 37 with axis L-orthogonal arranged.Second case lid 37 be big must to be enough to seal the opening portion of second mounting portion 24b in driving engine one side.External margin at second case lid 37 is formed with second flange 37a, and second flange 37a and second mounting portion 24b of second case lid 37 are overlapping in the end of driving engine one side.Then, second bolt 40---second tightening member as in a plurality of bolts of connecting device (Fig. 4 only drawn one of them) inserts from a side of driving engine 12, and is screwed among second mounting portion 24b by second flange 37a.In this way, second case lid 37 is fastened on second casing 24, thereby makes second mounting portion 24b and second case lid 37 form an enclosure space, in order to parts such as installation MG2.

At this, to guarantee predetermined strength in order to form one simultaneously for the through hole that second bolt 40 is installed, second flange 37a must have certain width (that is, having certain thickness in the radial direction) w2.In addition, in order to tighten or to unscrew second bolt 40, between the inside face of the inside face of second flange 37a and second main portion 24a, must have certain space.For the facility that illustrates, this space or gap will be referred to as " gap g2 " hereinafter.Relevant for this, according to this exemplary embodiments, second mounting portion 24b distance D 2 between the respective inner surfaces of the end inside face of drive wheel one side and second main portion 24a be less than width w2 and gap g2 and.But, second mounting portion 24b distance D 2 between the respective inner surfaces of the end inside face of driving engine one side and second main portion 24a be greater than width w2 and gap g2 and.This is because the internal diameter of second mounting portion 24b equates that everywhere the diameter of second main portion 24a is then more and more littler on the direction away from driving engine 12.Then, after second case lid 37 is fixed on second casing 24, between the inside face of the inside face of second flange 37a and second main portion 24a, form a gap.

MG2 has second stator 39 and second rotor 41.Second stator 39 is slightly littler than first stator 32 external diameters of MG1, and length is big slightly.Second stator 39 is positioned at the place of close second mounting portion 24b inside face, and is fixed on second supporting walls 38 by a tightening member 42 (as bolt).In addition, second rotor 41 is slightly littler than first rotor 33 external diameters of MG1, and length is big slightly.Second rotor 41 is supported on rotationally by a bearing 43 on the core of the core of second case lid 37 and second supporting walls 38.Then, by the aforesaid stator coil 44 that is installed in second stator 39 of the MG2 in second casing 24 is encouraged, make 41 rotations of second rotor.

As shown in Figure 2, an input shaft 45 passes from the centre of first case lid 29, and first rotor 33 and first supporting walls 31 can relatively be rotated.This input shaft 45 links to each other with bent axle 47 by a transmission damper 46, and this bent axle is the output shaft of driving engine 12.Similarly, a tween drive shaft 48 passes from the centre of second case lid 37, makes second rotor 41 and second supporting walls 38 relatively to rotate.Simultaneously, diameter is inserted in the 3rd casing 25 than input shaft 45 and all big output shaft 49 of tween drive shaft 48.This output shaft 49 is supported in the 3rd casing 25 rotationally by a bearing 25.This output shaft 49 is connected with drive wheel 13 by parts such as transmission shaft 15, diff 16 and axle drive shaft 17.Tween drive shaft 48 directly links to each other with output shaft 49, and this is described later.

The power distribution that power splitting mechanism 27 is used for suitably driving engine 12 is the propulsive effort of direct drive wheel 13 and the generating propulsive effort that produces electric energy for the MG1 running.This power splitting mechanism 27 is arranged in the core case 22, in the space between MG1 and MG2.As shown in Figure 5, this power splitting mechanism 27 comprises a compound planet gear, and 52, one gear rings 53 of a sun wheel and a planetary wheel retainer 54 of wherein having same center are interlocked rotationally.First rotor 33 interlockings of MG1 on sun wheel 52 and the input shaft 45, thus can integrally rotate with it.The diameter of gear ring 53 is littler than the external diameter of second stator 39 of first stator 32 of MG1 and MG2, and is installed on the end that tween drive shaft 48 is positioned at driving engine 12 1 sides.Planetary wheel retainer 54 is connected on the input shaft 45, thereby can integrally rotate with it.A pinion 55 is supported on this planetary wheel retainer 54 rotationally.This pinion 55 is between sun wheel 52 and gear ring 53, and simultaneously and sun wheel 52 and gear ring 53 engagements rotationally.

Then, by the power splitting mechanism 27 of said structure, the power of driving engine 12 is passed in the input shaft 45, is passed on first rotor 33 of MG1 by planetary wheel retainer 54, pinion 55 and sun wheel 52 then.In addition, the power that is passed to input shaft 45 is passed to (that is, tween drive shaft 48) on the gear ring 53 by planetary wheel retainer 54 and pinion 55 again.

In above-mentioned power splitting mechanism 27, the external diameter of gear ring 53 is all littler than the external diameter of MG1 and MG1.Thereby in core case 22, on gear ring 53 and power splitting mechanism 27 radially outer directions, space S 1 and S2 between MG1 and MG2, have been produced with preliminary dimension.

As shown in Figure 6, speed reduction gearing 28 comprises a compound planet gear, 56, one gear rings 57 of a sun wheel and a planetary wheel retainer 58 of wherein having same center are interlocked rotationally, as the compound planet gear in the power splitting mechanism 27.Total is arranged in the 3rd casing 25.Second rotor 41 interlocking of sun wheel 56 and MG2, thus can integrally rotate with it.Gear ring 57 and tween drive shaft 48 and output shaft 49 interlockings, thus can integrally rotate.Planetary wheel retainer 58 is fixed on second supporting walls 38 of second casing 24.In this planetary wheel retainer 58, supporting a rotating pinion 59.This pinion 59 and is meshing with each other with them between sun wheel 56 and gear ring 57, thereby can freely rotate together.Then, by the speed reduction gearing 28 of this structure, the rotation of second rotor 41 of MG2 is passed on the output shaft 49 by sun wheel 56, pinion 59 and gear ring 57.Realized the effect of slowing down by this transmittance process.Owing to the torque that increases of slowing down is used on the output shaft 49, be used for the propulsive effort of auxiliary engine 12.

As shown in Figure 2, MG1 and MG2 are connected on the high-tension battery 62 by a changer 61.This changer 61 and high-tension battery 62 are arranged in the rear of the front-rear direction of vehicle, on the position after leaning on more than actuating device 14.This changer 61 is devices of a control current, is used for converting the high voltage direct current of high-tension battery 62 to supply MG1 and MG2 work alternating current.

First cable 63 is used for MG1 and changer 61 generations are electrically connected.In addition, second cable is used for MG2 and changer 61 generations are electrically connected.For first cable 63 and second cable 64, use be high voltage bearing cable.In addition, the space S 1 in the core case 22 are used to connect first cable 63 with MG1 and be connected second cable 64 and MG2.

More particularly, as shown in Figure 5, on first supporting walls 31, has first connecting bridge 65.At this, first connecting bridge 65 has an outstanding position, side-prominent from the last direction MG2 of first supporting walls 31.Then, first of the stator coil 36 of MG1 and first cable 63 is connected terminal 68 and electrically is connected on first connecting bridge 65.Similarly, on second case lid 37, have second connecting bridge 66.At this, second connecting bridge 66 has an outstanding position, side-prominent from the last direction MG1 of second case lid 37.Then, second of the stator coil 44 of MG2 and second cable 64 is connected terminal 71 and electrically is connected on second connecting bridge 66.

Shown in Fig. 3 and 5, primary outlet 67 is installed on the core case that MG1 is positioned at drive wheel 13 1 sides.Then, first connection terminal 68 puts in by primary outlet 67 and stretches out from core case 22.Equally, second outlet 69, similar to primary outlet 67, be installed on the core case that primary outlet 67 is positioned at drive wheel 13 1 sides.Then, second connects terminal 71 and puts in by second outlet 69 and stretch out from core case 22.Primary outlet 67 and second outlet 69 is wriggled out from driving engine 12 and is parallel to each other.

In addition, as shown in Figure 2, in drive case 21, have an oil pump 72, be used for engine oil supplying to slide unit, that is, and place such as between input shaft 45 and first rotor 33, between tween drive shaft 48 and second rotor 41.Among the MG1 and the space between the MG2 in core case 22, this oil pump 72 is positioned at the below of space S 2, power splitting mechanism 27, and is connected on the bottom of second case lid 37.Equally, have an oil pan 73 in the bottom of second casing 24, the machine oil that is used for that lubricating oil pump 72 is sent carries out filtered oil fil 74 and is arranged in this oil pan 73.

The working process of the actuating device 14 of said structure is as described below, for example, describes according to the driving cycle of hybrid vehicle 11.

<in starting and low speed driving process 〉

, engine operation low at drive wheel 13 rotating speeds is the area division of low efficiency at high load capacity, and for example under the low situation of starting process or moving velocity, driving engine 12 will shut down, and power is supplied among the MG2 by high-tension battery 62.Second rotor, 41 rotations of MG2, this rotation is passed on the output shaft 49 by sun wheel 56, pinion 59 and the gear ring 57 of speed reduction gearing 28.Then, the rotation of output shaft 49 is passed on the drive wheel 13 by transmission shaft 15 parts such as grade again.In this way, drive wheel 13 is only driven by the power of MG2.At this moment, first rotor 33 of MG1 is in idle condition.

<cruising process 〉

In the cruising process, driving engine 12 work, its power is distributed the back by power distributor gears 27 and is passed on the drive wheel 13.One of them path will be input to the transmission of power of input shaft 45 to pinion 55 and gear ring 53.The power that is transmitted by this path is passed on the output shaft 49 by tween drive shaft 48.Another paths is given electrical generator with transmission of power, produces electric energy to drive it.More particularly, this path power that will be input to input shaft 45 is passed on first rotor 33 of MG1 by pinion 55 and sun wheel 52.The electric energy that produces is supplied to MG2, is used as the auxiliary power source of driving engine 12 then.That is, second rotor, 41 rotations of MG2, this rotation is decelerated the back by speed reduction gearing 28 and is being delivered on the output shaft 49.Then, drive wheel 13 is driven by the power that transmits via this two paths and the peak output of output shaft 49.

Under the operating mode of<high load capacity 〉

The service condition of travelling under the high load capacity operating mode is similar with the service condition of travelling under nominal situation, but electric energy yet is supplied to MG2 by high-tension battery 62.As a result, the auxiliary power that MG2 provided has further improved.

<slow down and braking procedure

When slowing down and glancing impact, MG2 is driven by the rotation of drive wheel 13.In this case, MG2 act as an electrical generator, produces electric energy.Kinetic energy from car retardation is converted into electric energy, and is stored in the high-tension battery 62.

More than this exemplary embodiments of Xiang Shuing has following effect.

(1) in actuating device 14, MG1, power splitting mechanism 27, MG2 and speed reduction gearing 28 are disposed on the line, and are disposed in order with above-mentioned to the side away from driving engine 12 from the side near driving engine 12.In addition, the external diameter of MG2 is littler than the external diameter of MG1, and the external diameter of power splitting mechanism 27 is littler than the external diameter of MG1 and MG2, and the external diameter of speed reduction gearing 28 is littler than the external diameter of MG2.As a result, the external diameter of actuating device 14 is more and more littler on the direction away from driving engine 12, makes this actuating device 14 have the profile of taper, and very compact.In this way, according to this exemplary embodiments, speed reduction gearing 28 can be incorporated in this actuating device 14, and keeps the single-piece compactedness.

In addition, the installability of this actuating device 14 on hybrid vehicle of constructing compactly according to this mode is very good.Especially, above-mentioned profile is just the same with the profile that the automatic transmission with hydraulic torque converter that has a turbine transformer and a gearshift---is installed on a kind of conventional truck of the FR of having type drive system---.Therefore, by this actuating device 14 is designed to have the size identical with automatic transmission with hydraulic torque converter, just this actuating device 14 can be installed on the vehicle originally to have existed and be used to place in the floor tunnel 19 of automatic transmission with hydraulic torque converter.So just automatic transmission with hydraulic torque converter can be substituted by this actuating device 14 and be arranged in this floor tunnel 19.In other words, this automatic transmission with hydraulic torque converter so just can use same floor 18 with in this actuating device 14 can be installed in an identical floor 18 that comprises this floor tunnel 19.Therefore, except that already present being used to installs the floor tunnel of automatic transmission with hydraulic torque converter, there is no need in floor tunnel that is used to install this actuating device 14 of new design.

(2) when this actuating device 14 being expanded to when being applied on a series of hybrid vehicle 11, if the engineering factor such as speed ratio such as speed reduction gearing 28 all are consistent, can use MG1, MG2 and power splitting mechanism 27 and other similar parts so---because they all are common.At this, the 3rd casing 25 that speed reduction gearing 28 is installed is separate with the core case 22 that MG1, MG2 and power splitting mechanism are installed, and these two casings 22 can interconnect or separate with 25.Therefore, by preparing a unit that is installed in the 3rd speed reduction gearing 28 in the casing for each hybrid vehicle 11, to all types of hybrid vehicles 11, just can only need with a kind of MG1, the MG2 of core casing 22 and core cell of power splitting mechanism 27 of being installed in.Then, when assembling multiple actuating device 14, just can be attached to simply on the public core cell unit of the speed reduction gearing 28 of coupling separately with this actuating device in composing room.Therefore, it is just simpler to change a kind of work of the speed-changing mechanism 28 with different speed ratios.

(3) because power splitting mechanism 27 comprises a compound planet gear, the external diameter of gear ring 53 of determining this compound planet gear overall dimension in addition is littler than the external diameter of MG1 and MG2, therefore between MG1 and MG2, the outside place of gear ring 53 radial direction formed space S 1 and S2.In these spaces, space S 1 is used to install first connecting bridge 65, and this connecting bridge 65 links to each other first cable 63 on electric with the stator coil 36 of MG1.In addition, space S 1 also is used to install second connecting bridge 66, and this connecting bridge 66 links to each other second cable 64 on electric with the stator coil 44 of MG2.By the first pontes 65 and second connecting bridge 66 being placed in the space S 1 between MG1 and the MG2, can effectively utilize the space.In addition, space S 2 is used for installing machine oil pump 72, has therefore also effectively utilized the space.Like this, by space S 1 and S2, connecting bridge 65 and 66, lubricating oil pump 72 can be installed in the actuating device 14, and do not influence the compactedness of this device.

(4) being connected to first on the stator coil 36 of MG1 connects terminal 68 and stretches out from drive case 21 by first outlet 67.Being connected to the connection of second on MG2 terminal 71 also stretches out from drive case 21 by second outlet 69.At this, all on drive case 21, this drive case is more and more narrow on the direction away from driving engine 12 in first outlet, 67 and second outlet 69.In addition, second outlet 69 is positioned on the side of first outlet 67 relative with driving engine 12, that is, on the drive case 21, external diameter than the littler position of primary outlet 67 present position external diameters on.In addition, first outlet, 67 and second outlet 69 is all wriggled out from driving engine 12 and is parallel to each other.Like this, in this exemplary embodiments, connecting cable 63 and 64 changer 61 are disposed in the back of actuating device 14 on the front-rear direction of vehicle, and cable 63 can stretch out and not mutual interference mutually from drive case 21 together with 64, and stretches in this changer 61 always.

(5) can imagine a transmission device is placed on the outside of MG2, this transmission device is used for the rotation of the gear ring 53 of power splitting mechanism 27 is delivered to output shaft 49.In this case, for example, except that input shaft 45 and output shaft 49, other has an axle axially parallel with these input and output, and has a rotation transmission part on every axle, for example a gear.This root axle in this case is corresponding to the tween drive shaft in the hand-operated transmission.Like this, the rotation of input shaft 45 just can be passed through this axle (that is tween drive shaft), gear etc. and be passed on the output shaft 49.On the other hand, owing to used gear, therefore have the shortcoming that produces noise and vibration in the process of gear mesh.

Under the contrast, according to this exemplary embodiments, being used for the tween drive shaft 48 that the rotation with gear ring 53 is delivered on the output shaft 49 is holistic with gear ring 53.This tween drive shaft 48 passes second rotor 41 of MG2 and is connected on the gear ring 57 of output shaft 49.This has just been avoided using above-mentioned the sort of tween drive shaft.Because therefore noise and vibration in the time of can not producing gear mesh have improved noise and vibration characteristic.

(6) big through the torque before the torque ratio deceleration after speed reduction gearing 28 decelerations.Therefore, transmit the parts that increase torque and must have very high intensity.According to this exemplary embodiments, in order to satisfy this requirement, the diameter of output shaft 49 must be bigger than the diameter of input shaft 45 and tween drive shaft 48.

At this, if speed reduction gearing 28 is arranged on the side of close driving engine 12 of MG2, the output shaft 49 that diameter is bigger will pass from MG2, thereby require the diameter of MG2 also bigger, can increase the overall dimension of actuating device 14 like this.Contrast therewith, according to this exemplary embodiments, as mentioned above, speed reduction gearing 28 is arranged in MG2 near on the side of drive wheel 13.Therefore, the axle (that is, tween drive shaft 48) that passes MG2 does not need bigger diameter, so just can avoid increasing the size of MG2 and actuating device 14.

(7) because the external diameter of MG2 is littler than the external diameter of MG1, therefore a space appears below MG2.Oil pan 73 is placed in this space.Like this, owing to causing the increase of actuating device 14 sizes, fitting machine food tray 73 just can reduce to minimum.In other words, provide oil pan 73 not need to sacrifice the installability of actuating device 14.

First supporting walls 31 and first case lid 29 of (8) first casings 23 support the first rotor 33 rotationally, and form an enclosure space that is used to install MG1.In addition, second supporting walls 38 and second case lid 37 of second casing 24 support second rotor 41 rotationally, and form an enclosure space that is used to install MG2.Therefore can prevent exterior materials from entering into the first installation part 23b and the second mounting portion 24b and influence the normal operation of the first rotor 33 and second rotor 41.Like this, MG1 and MG2 can keep them as electrical motor or electrical generator and normal operation, thereby have high reliability.

(9) first case lids 29 are arranged on the side (that is, in the end of the first installation part 23b near driving engine one side) of the close driving engine 12 of MG1 in the first main portion 23a.The first main portion 23a is bigger slightly than the external diameter of the other parts of the first main portion 23a at this locational diameter.Especially, the first main portion 23a is bigger near the diameter on the end of drive wheel one side at the first installation part 23b than it at this locational diameter.The size relationship of the distance D 1 between the inside face of the inside face of the first installation part 23b and the first main portion 23a and above-mentioned the same.Like this, because distance D 1 is greater than the summation of width w1 and the gap g1 between the first flange 29a and the first main portion 23a of the first flange 29a, therefore, even the first main portion 23a is not stretching out in the radial direction, first case lid 29 also can be arranged in the first main portion 23a, and is secured on the first installation part 23b by first bolt 30.

In this way, the external diameter that just can prevent first casing 23 becomes bigger behind additional first case lid 29, thereby has kept the original profile of drive case 21, promptly becomes more and more narrow on the direction away from driving engine.The profile that this profile and the automatic transmission with hydraulic torque converter with a turbine transformer and a speed-changing mechanism---are installed on a kind of vehicle of the FR of having type drive system---is the same.Like this, just automatic transmission with hydraulic torque converter can be substituted by this actuating device 14 and be arranged in the floor tunnel 19, and improve the installability of this actuating device 14 on vehicle.

The diameter of (10) first main portion 23a is just big more the closer to driving engine 12.Therefore, even in the first main portion 23a, around first case lid 29, particularly around the first flange 29a---be arranged near on the position of driving engine 12, formed an enough wide space.This space facility dismounting and the operation that loosens, tighten first bolt 30 that first case lid 29 is carried out is installed.

(11) second case lids 37 are arranged on the side (that is, in the end of the second mounting portion 24b near driving engine one side) of the close driving engine 12 of MG2 in the second main portion 24a.The second main portion 24a is bigger slightly than the external diameter of the other parts of the second main portion 24a at this locational diameter.Especially, the second main portion 24a is bigger near the diameter on the end of drive wheel one side at the second mounting portion 24b than it at this locational diameter.The size relationship of the distance D 2 between the inside face of the inside face of the second mounting portion 24b and the second main portion 24a and above-mentioned the same.Like this, because distance D 2 is greater than the summation of width w2 and the gap g2 between the second flange 37a and the second main portion 24a of the second flange 37a, therefore, even the second main portion 24a is not stretching out in the radial direction, second case lid 37 also can be arranged in the second main portion 24a, and is secured on the second mounting portion 24b by second bolt 40.In this way, the external diameter that just can prevent second casing 24 becomes bigger behind additional second case lid 37, thereby has kept the original profile of drive case 21, promptly becomes more and more narrow on the direction away from driving engine.Accordingly, with above-mentioned effect (2), the installability of this actuating device 14 on vehicle further improved.

The diameter of (12) second main portion 24a is just big more the closer to driving engine 12.Therefore, even in the second main portion 24a, around second case lid 37, particularly around the second flange 37a---be arranged near on the position of driving engine 12, formed an enough wide space.This space facility dismounting and the operation that loosens, tighten second bolt 40 that second case lid 37 is carried out is installed.

The present invention can realize in following other embodiments.

The work that among-MG1 and the MG2 each can be generated electricity and the work of power is provided, or this two kinds wherein a kind of.Accordingly, can use the motor of types such as a kind of VR type (variable reluctance type) synchronous dynamo, fine setting motor, DC machine, induction motor, superconduction electric machine or stepping motor to replace the ac synchronous motor that in above-mentioned exemplary embodiments, uses.

-actuating device according to the present invention is not limited to a kind of FR type drive system, also can be applied in to have another kind of drive system---on the hybrid vehicle as engine behind front wheel, before driving (FF) drive system.

-in above-mentioned exemplary embodiments, the planetary wheel retainer 58 of speed reduction gearing 28 is fixed.But, gear ring 57 is fixed on the 3rd casing 25.

-the second flange 37a also can be a part wherein on can being formed at around the whole outward flange of second case lid 37.

By these exemplary embodiments understand technical essential, and their effect will be described as follows:

(A) in according to one of them drive apparatus for hybrid vehicle of claim 1 to 4, power splitting mechanism comprises a compound planet gear, this compound planet gear has a gear ring, and the external diameter of this gear ring is littler than the external diameter of dynamotor, and is arranged in the genemotor group.Be used for being supplied to the lubricating oil pump of slide unit to be positioned at the radially outer space of centre, gear ring of dynamotor in machine oil.

According to above-mentioned structure, by effectively utilizing two spaces between the dynamotor, lubricating oil pump can be incorporated in this actuating device, and not influence the compactedness of actuating device.

(B) in a kind of drive apparatus for hybrid vehicle according to claim 1 to 4 one of them or above-mentioned (A), oil pan is positioned at the below of second dynamotor.

According to this structure,, the fitting machine food tray just can reduce to minimum owing to causing the increase of actuating device size.

(C) in a kind of drive apparatus for hybrid vehicle according to claim 5 or 6, first retaining element comprises and passes first flange and tighten to first bolt on the first installation part.

(D) in a kind of drive apparatus for hybrid vehicle according to claim 7 or 8, first retaining element comprises and passes first flange and tighten to first bolt on first erecting device.

According to (C) and (D), first case lid can be fastened to reliably by first bolt on the end of close driving engine one side of the first installation part.

(E) in a kind of drive apparatus for hybrid vehicle according to claim 6, second retaining element comprises and passes second flange and tighten to second bolt on second mounting portion.

(F) in a kind of drive apparatus for hybrid vehicle according to claim 6, second retaining element comprises and passes second flange and tighten to second bolt on second erecting device.

According to (E) and (F), second case lid can be fastened to reliably by second bolt on the end of close driving engine one side of second mounting portion.

(G) according to claim 58 or above-mentioned (C) to a kind of drive apparatus for hybrid vehicle of (F), the first installation part is a column shape, and has a supporting walls on a side end relative with driving engine.This supporting walls is positioned on the dynamotor relative with driving engine one side, and seals the end of this side.

According to this structure, this supporting walls and first case lid be the two ends complete closed of the first installation part, thereby prevent exterior materials from entering into the first installation part and influence the normal operation of first dynamotor.

(H) in according to claim 6,8, above-mentioned (D) or a kind of drive apparatus for hybrid vehicle (F), second mounting portion is a column shape, and has second supporting walls on a side end relative with driving engine.This supporting walls is positioned on the dynamotor relative with driving engine one side, and seals the end of this side.

According to this structure, second supporting walls and second case lid be the two ends complete closed of second mounting portion, thereby prevent exterior materials from entering into second mounting portion and influence the normal operation of second dynamotor.

Claims (9)

1. a drive apparatus for hybrid vehicle is characterized in that, comprising:
Act as first dynamotor of one of electrical motor and electrical generator;
A power splitting mechanism part, the power distribution that driving engine is produced becomes to supply with the power of first dynamotor and the power of supply drive wheels;
Be arranged in second dynamotor of first dynamotor one side relative with driving engine, act as one of an electrical motor and an electrical generator, this dynamotor produces power and offers drive wheels, the power of this power and driving engine output is different, and the external diameter of this dynamotor is littler than the external diameter of first dynamotor; And
A speed reduction gearing is arranged in second dynamotor one side relative with driving engine, and the external diameter of this speed reduction gearing is littler than the external diameter of second dynamotor, and is used to reduce the rotating speed of second dynamotor.
2. according to the drive apparatus for hybrid vehicle of claim 1, it is characterized in that, further comprise:
A core case, its profile is more and more narrow on the direction away from driving engine, and first dynamotor, second dynamotor and power splitting mechanism part are installed in this core case;
A casing that separates with core case is equipped with the speed reduction gearing part in this casing; And
A connecting bridge is used for this casing is connected with core case.
3. according to the drive apparatus for hybrid vehicle of claim 1 or 2, it is characterized in that, further comprise:
The first pontes is used for first cable and the generation of first dynamotor are electrically connected; And
Second connecting bridge is used for second cable and the generation of second dynamotor are electrically connected,
Wherein said power splitting mechanism is arranged between first dynamotor and second dynamotor, and comprises that a compound planet gear, this compound planet gear have an external diameter than first dynamotor and the little gear ring of the second dynamotor external diameter; And
The described the first pontes and second connecting bridge are between first dynamotor and second dynamotor, in the space that extends radially outwardly of gear ring.
4. according to the drive apparatus for hybrid vehicle of claim 1 or 2, it is characterized in that, further comprise:
The first pontes is used for first cable and the generation of first dynamotor are electrically connected; And
Second connecting bridge is used for second cable and the generation of second dynamotor are electrically connected,
A drive case wherein is equipped with first dynamotor and second dynamotor, and its profile is more and more narrow on the direction away from driving engine;
First outlet is formed in this drive case, and wriggles away from driving engine, and first cable that is connected to first dynamotor stretches out from drive case by this outlet; And
Second outlet, in this drive case relative with driving engine first outlet, one side, be parallel to first outlet and form, second cable that is connected to second dynamotor stretches out from drive case by this outlet.
5. according to the drive apparatus for hybrid vehicle of claim 1, it is characterized in that, further comprise:
A drive case wherein is equipped with first dynamotor and second dynamotor, and its profile is more and more narrow on the direction away from driving engine;
First casing, this casing comprises the part of drive case, and has and be fixed to first main portion on the driving engine and be formed at the first installation part in first main portion, this first installation part is used to install first dynamotor;
Second casing, this casing comprises the part of drive case, and is connected on first main portion;
First case lid, this case lid are arranged in driving engine one side of first dynamotor in first main portion, are used for cover cap first dynamotor, and
First retaining element, this retaining element will be formed at first flange connection of the first case lid outer edge part to the first installation part.
6. according to the drive apparatus for hybrid vehicle of claim 5, it is characterized in that, further comprise:
Second main portion is positioned at second casing, and is connected with first main portion;
Second mounting portion is formed in second main portion, and is used to install second dynamotor;
Second case lid, this case lid are arranged in driving engine one side of second dynamotor in second main portion, are used for cover cap second dynamotor, and
Second retaining element, this retaining element will be formed at second flange connection of the second case lid outer edge part to second mounting portion.
7. according to the drive apparatus for hybrid vehicle of claim 1, it is characterized in that, further comprise:
A drive case first dynamotor and second dynamotor wherein are installed, and its profile is more and more narrow on the direction away from driving engine;
First casing, this casing comprises the part of drive case, and has and be fixed to first main portion on the driving engine and be formed at the first installation part in first main portion, this first installation part is used to install first dynamotor;
Second casing, this casing comprises the part of drive case, and is connected on first main portion;
First case lid, this case lid are arranged in driving engine one side of first dynamotor in first main portion, are used for cover cap first dynamotor, and
First anchor fitting, this anchor fitting will be formed at first flange connection of the first case lid outer edge part to the first installation part.
8. according to the drive apparatus for hybrid vehicle of claim 7, it is characterized in that, further comprise:
Second main portion is positioned at second casing, and is connected with first main portion;
Second mounting portion is formed in second main portion, and is used to install second dynamotor;
Second case lid, this case lid are arranged in driving engine one side of second dynamotor in second main portion, are used for cover cap second dynamotor, and
Second anchor fitting, this anchor fitting will be formed at second flange connection of the second case lid outer edge part to second mounting portion.
9. according to any one drive apparatus for hybrid vehicle of claim 1 to 8, wherein:
This speed reduction gearing partly comprises a compound planet gear, and be arranged in the coaxial axis of first dynamotor, second dynamotor and power splitting mechanism part on.
CNB028264169A 2001-12-26 2002-12-23 Drive apparatus for hybrid vehicle CN100469612C (en)

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CN102086932B (en) * 2009-12-04 2015-01-28 现代自动车株式会社 Hydraulic control system of power train for hybrid vehicle
CN107206884A (en) * 2015-01-28 2017-09-26 本田技研工业株式会社 Drive device for hybrid vehicle
US10675962B2 (en) 2015-01-28 2020-06-09 Honda Motor Co., Ltd. Hybrid vehicle driving system

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