JP2013147046A - Powertrain system element arrangement structure for hybrid vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact power unit room by arranging an inverter and an electronic control unit in the power unit room with high space efficiency.SOLUTION: A powertrain system element including a transverse engine 4 and a motor/generator 6 is arranged in a front room 1. In a powertrain system element arrangement structure of an FF plug-in hybrid vehicle, an inverter 12 connected to the motor/generator 6 is arranged in the front room 1. In a space above the inverter 12, an engine controller 11 for controlling a powertrain system and a transmission controller 14 are stacked in a layered manner.

Description

  The present invention relates to a power train system element arrangement structure of a hybrid vehicle in which a power train system element including a horizontally mounted engine and a motor is arranged in a power unit room.

  2. Description of the Related Art Conventionally, a vehicle in which a horizontally mounted engine and an electronic control unit are arranged in an engine room of a vehicle is known (see, for example, Patent Document 1).

JP 2002-325335 A

  However, in the conventional electronic control unit arrangement structure, the electronic control unit for controlling the horizontally placed engine is arranged alone in the engine room. For this reason, when applied to a hybrid vehicle that includes a motor in addition to the engine and the inverter needs to be arranged in the power unit room, it is necessary to secure a planar space in the power unit room for installing the inverter and the electronic control unit. Therefore, there is a problem that the space efficiency of the power unit room is low and the power unit room is enlarged.

  The present invention has been made paying attention to the above problems, and by arranging an inverter and an electronic control unit in the power unit room with high space efficiency, the power train system element of the hybrid vehicle can be made compact in the power unit room. An object is to provide an arrangement structure.

In order to achieve the above object, in the present invention, power train elements including a horizontally mounted engine and a motor are arranged in a power unit room.
In the power train system element arrangement structure of this hybrid vehicle,
An inverter connected to the motor is disposed in the power unit room.
Electronic control units for controlling the power train system are arranged in a hierarchical manner in the vehicle upper space of the inverter.

Therefore, the vehicle upward space of the inverter arranged in the power unit room is utilized as an installation space for the electronic control unit.
That is, when the inverter and the electronic control unit are arranged in the power unit room, the space efficiency is improved as compared with the case where the electronic control unit is arranged at a position independent from the inverter.
As a result, the power unit room can be made compact by arranging the inverter and the electronic control unit in the power unit room with high space efficiency.

1 is an overall system diagram illustrating an FF plug-in hybrid vehicle to which a power train element arrangement structure according to a first embodiment is applied. 1 is a front view showing a power train system element arrangement structure in a front room in an FF plug-in hybrid vehicle of Example 1. FIG. 1 is a plan view showing a power train system element arrangement structure in a front room in an FF plug-in hybrid vehicle of Example 1. FIG. 1 is a side view showing a power train system element arrangement structure in a front room in an FF plug-in hybrid vehicle of Example 1. FIG.

  Hereinafter, the best mode for realizing the power train system element arrangement structure of the hybrid vehicle of the present invention will be described based on Example 1 shown in the drawings.

First, the configuration will be described.
The configuration of the power train system element arrangement structure of the FF plug-in hybrid vehicle (an example of a hybrid vehicle) according to the first embodiment will be described separately as “overall system configuration” and “power train system element arrangement configuration”.

[Overall system configuration]
FIG. 1 is an overall system diagram showing an FF plug-in hybrid vehicle to which the power train element arrangement structure of the first embodiment is applied. The overall system configuration of the plug-in hybrid vehicle will be described below with reference to FIG.

As shown in FIG. 1, the FF plug-in hybrid vehicle includes a front room 1 on the front side of the vehicle on which the power train system elements are mounted, a center room 2 on which a driver and a passenger are seated, and a vehicle rear side on which the battery system elements are mounted. The rear room 3 is divided into three spaces.
Here, the “power train system element” refers to each component element that includes the electronic control system and constitutes the power train system. The “battery system element” refers to each component element that includes the electronic control system and constitutes the battery system.

  As shown in FIG. 1, the front room 1 includes a horizontal engine 4, a first clutch 5, a motor / generator 6, a second clutch 7, and a belt type continuously variable transmission 8. It is arranged as a system element. The horizontal engine 4 includes an air cleaner 9 and a starter motor 10. The output shaft of the belt type continuously variable transmission 8 is drivingly connected to the left and right front wheels via a final reduction gear, a differential gear, and left and right drive shafts (not shown).

  The horizontal engine 4 is an engine disposed in the front room 1 with the crankshaft direction as the vehicle width direction. In the front room 1 in which the horizontal engine 4 is arranged, an engine controller 11 that performs various controls related to the horizontal engine 4 is arranged as a component of the engine control system.

  The first clutch 5 is a hydraulic single-plate friction clutch or a multi-plate friction clutch interposed between the horizontal engine 4 and the motor / generator 6, and is engaged / slip-engaged / released by the first clutch oil pressure. Is controlled.

  The motor / generator 6 is a three-phase AC permanent magnet synchronous motor connected to the transverse engine 4 via a first clutch 5. The motor / generator 6 is connected to an inverter 12 through a three-phase AC harness 26 that converts direct current to three-phase alternating current during power running and converts three-phase alternating current to direct current during regeneration. In the front room 1 in which the motor / generator 6 is disposed, a motor controller 13 that outputs a control command to the inverter 12 is disposed as a component of the motor control system.

  The second clutch 7 is a hydraulic single-plate friction clutch or a multi-plate friction clutch interposed between the motor / generator 6 and the left and right front wheels as drive wheels. The second clutch 7 is engaged / slip by the second clutch hydraulic pressure. The fastening / release is controlled.

  The belt-type continuously variable transmission 8 is controlled to change to a continuously variable transmission ratio by changing the belt winding diameter by the transmission hydraulic pressure to the primary oil chamber and the secondary oil chamber. The belt-type continuously variable transmission 8 has a control valve unit that regulates the line pressure from the pump discharge pressure and generates the first and second clutch hydraulic pressures and the transmission hydraulic pressure using the line pressure as an original pressure. In the front room 1 in which the first and second clutches 5 and 7 and the belt type continuously variable transmission 8 are arranged, a transmission controller 14 that outputs a hydraulic control command to each hydraulic actuator of the control valve unit includes a hydraulic pressure It is arranged as a component of the control system.

  Typical driving modes having different driving modes by the power train system include “EV mode”, “HEV mode”, and “WSC mode”. The “EV mode” is a mode in which the first clutch 5 is disengaged and the second clutch 7 is engaged to drive the motor. The “HEV mode” is a mode in which both the clutches 5 and 7 are engaged to travel. The “WSC mode” is a mode in which the first clutch 5 is engaged or released and the second clutch 7 is slip-engaged to travel.

  In the center room 2, as shown in FIG. 1, a brake controller 21 that performs cooperative control of the regenerative braking force and the hydraulic braking force is disposed on the front side of the vehicle and at a position where the brake hydraulic pressure actuator is provided. . A fuel tank 22 that stores fuel for the horizontally mounted engine 4 is disposed at a position on the rear side of the vehicle and below the floor panel that defines the center room 2. Are connected by a fuel pipe 23.

  As shown in FIG. 1, the rear room 3 includes a travel battery 31, a first auxiliary battery 32, a second auxiliary battery 33, a joint box 34, a first DC / DC converter 35, The second DC / DC converter 36 is arranged as a battery system element. In the rear room 3, a charger 37 and a charging port 38 are additionally arranged as battery system elements in association with the plug-in hybrid vehicle.

  The traveling battery 31 is a secondary battery as a traveling power source, and for example, a laminate type lithium ion battery is used. The traveling battery 31 has a structure in which a large number of cells connected to each other are stacked to form a battery module, and a plurality of battery modules are arranged in the pack case via gap passages. The traveling battery 31 is discharged via the joint box 34 → the power line harness 39 → the inverter 12 when the motor / generator 6 performs power running control. On the other hand, when the motor / generator 6 performs regenerative control, charging is performed via the inverter 12 → the power line harness 39 → the joint box 34.

  The first auxiliary battery 32 is a low-voltage battery mounted as a dedicated power source for the starter motor 10 among in-vehicle auxiliary machines. The second auxiliary battery 33 is a low voltage battery mounted as a power source for other auxiliary machines 40 excluding the starter motor 10. Here, the reason why the two auxiliary batteries 32 and 33 are installed is to ensure engine start when the starter motor 10 requests engine start. For example, when only one auxiliary battery is mounted, a voltage drop may occur due to simultaneous use of the starter motor 10 and other auxiliary machines 40.

  The joint box 34 is a distribution board in which relay circuits for supplying / cutting off / distributing strong power to the traveling battery 31 are integrated. For example, when the connector plug 41 is connected to the charging port 38 (plug-in) when the vehicle stops at a charging stand or the like (plug-in), the traveling battery 31 is externally charged via the charging port 38 → the charger 37 → the joint box 34. If the charge amount of the first auxiliary battery 32 is insufficient, the first auxiliary battery 32 is charged with a part of the charge amount of the traveling battery 31 via the joint box 34 → the first DC / DC converter 35. The amount is secured. Similarly, if the charging amount of the second auxiliary battery 33 is insufficient, the second auxiliary battery 33 is partially charged by the traveling battery 31 through the joint box 34 → the second DC / DC converter 36. Charge amount is secured.

  The traveling battery 31, the first DC / DC converter 35, the second DC / DC converter 36, and the charger 37 are all in a pack structure housed in a case that covers the whole, and the air cooling fan units 51, 55, 56 and 57 are provided in each of the storage cases. The rear room 3 in which the joint box 34 and the air cooling fan units 51, 55, 56, 57 are arranged performs capacity management, temperature management, etc. of the traveling battery 31 and operation control of the air cooling fan units 51, 55, 56, 57. A battery controller 42 for performing the above is disposed as a component of the battery control system.

  In the rear room 3, an integrated controller 43 that manages the energy consumption of the entire vehicle and has a function for running the vehicle with the highest efficiency is disposed as a component of the integrated control system. Information is exchanged between the integrated controller 43 and the controllers 11, 13, 14, 21, 42 via the CAN communication line 44.

[Configuration of powertrain elements]
2 to 4 are a front view, a plan view, and a side view showing a power train system element arrangement structure in the front room. Hereinafter, the arrangement of power train elements will be described with reference to FIGS.

  As shown in FIGS. 2 to 4, the front room 1 (power unit room) includes a horizontally mounted engine 4, a motor / generator 6 (motor), a belt type continuously variable transmission 8, an air cleaner 9, and an engine. A controller 11 (electronic control unit), an inverter 12, a motor controller 13, and a transmission controller 14 (electronic control unit) are arranged.

  As shown in FIGS. 2 and 3, the horizontal engine 4 is disposed in the right side space of the front room 1 in the vehicle width direction. As shown in FIG. 2, the crankshaft of the horizontal engine 4, the motor shaft of the motor / generator 6, and the input shaft of the belt type continuously variable transmission 8 are arranged in the vehicle width direction at the crankshaft position of the horizontal engine 4. Coaxial arrangement (common axis A). In the lower position of the horizontally mounted engine 4, the cases of the motor / generator 6 and the belt type continuously variable transmission 8 are integrally fixed in the vehicle width direction to constitute a power unit mounted in the front room 1 of the FF hybrid vehicle. doing. Thus, by arranging the power unit in an L-shape, the upper space S is formed in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8 in the front room 1 which are lower than the horizontally mounted engine 4. Forming.

  In an upper space S formed in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8, an air cleaner 9, an engine controller 11, an inverter 12, a motor controller 13 and a transmission controller 14 are arranged.

  As shown in FIG. 4, the inverter 12 is positioned below the height of the horizontal engine 4, and is an upper space that is offset from the upper position of the motor / generator 6 and the belt type continuously variable transmission 8 toward the vehicle front side. Arranged in the front region of S. On the other hand, the air cleaner 9 is a position below the height of the horizontal engine 4 and is an upper position of the motor / generator 6 and the belt-type continuously variable transmission 8, and is adjacent to the horizontal engine 4 in the vehicle width direction. Arranged in the rear region of the upper space S. That is, the inverter 12 and the air cleaner 9 are arranged in the upper space S in the vehicle front-rear direction.

  As shown in FIG. 2, the power unit (horizontal engine 4, motor / generator 6, and belt type continuously variable transmission 8) is connected to the suspension member 15 (first vehicle body member) via a mount member (not shown). Elastically supported. On the other hand, the inverter 12 and the air cleaner 9 are fixed to the side member 16 (second vehicle body member) via a bracket 17 in parallel with the power unit.

  The air cleaner 9 is disposed at a position adjacent to the transverse engine 4 in the vehicle width direction, and has an air inlet 9a that is opened slightly obliquely toward the front of the vehicle, as shown in FIGS. Then, traveling wind or the like is introduced from a space formed between the horizontally placed engine 4 and the inverter 12. Further, it is connected to the intake pipe 24 of the horizontally mounted engine 4 via a bellows pipe 25 that absorbs relative displacement.

  As shown in FIG. 2, the inverter 12 integrally includes a motor controller 13, and an engine controller 11, which is an electronic control unit, and a transmission controller 14 are layered in a vehicle upper space of the inverter 12. Arranged. As shown in FIG. 4, a power line harness 39 extending from the traveling battery 31 mounted in the rear room 3 to the vehicle front side is connected to the vehicle rear side position of the inverter 12. The inverter 12 is connected to the motor / generator 6 by a three-phase AC harness 26.

  The controllers 11, 14 arranged at the upper position of the inverter 12 arrange the engine controllers 11 in a hierarchy at an upper position in an occupied area in plan view of the inverter 12. Furthermore, the layout is such that the transmission controllers 14 are arranged in a hierarchy at the upper position in the occupied area in plan view of the inverter 12 and at the upper position of the engine controller 11.

  As shown in FIG. 4, the signal line harness 18 connected to the engine controller 11 and the transmission controller 14 is a vehicle formed between the rear surfaces of the controllers 11 and 14 on the vehicle rear side and the protective plate portion 19a. Wiring is performed along the width direction space. As shown in FIG. 4, the protective plate portion 19a is integrally bent from the first mounting plate 19, and functions as a vertical wall that partitions the controllers 11 and 14 and the air cleaner 9 in the vehicle width direction. To do. As shown in FIG. 2, the first attachment plate 19 is a plate that is fixed to the upper surface of the inverter 12 and sets the engine controller 11. A second mounting plate 20 for setting the transmission controller 14 is fixed to the first mounting plate 19.

Next, the operation will be described.
The operation of the power train system element arrangement structure of the hybrid vehicle according to the first embodiment will be described by dividing it into “an arrangement action of the air cleaner and the inverter” and “a controller arrangement action on the upper part of the inverter”.

[Air cleaner and inverter arrangement]
If the overall design, vehicle width, and vehicle height are determined as the vehicle design specifications, the powertrain system elements must be used to increase the forward view from the center room 2, increase the room volume, and ensure design flexibility. It is necessary to make the front room 1 in which the space is arranged as compact as possible. Hereinafter, the arrangement | positioning effect | action of the air cleaner 9 and the inverter 12 which reflects this is demonstrated.

  As described above, in the first embodiment, the air cleaner 9 disposed above the horizontal engine 4 is disposed in the upper space S formed in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8. With this configuration, the front room 1 only needs to secure a room height dimension H (see FIG. 2) that allows the height dimension of the horizontally placed engine 4.

  In the first embodiment, the air cleaner 9 and the inverter 12 are arranged in the vehicle front-rear direction in the upper space S formed in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8. With this configuration, the width of each of the air cleaner 9 and the inverter 12 is set to a width that can be accommodated in the upper space S, and the combined width of the horizontal engine 4, the motor / generator 6, and the belt type continuously variable transmission 8 can be obtained. It is only necessary to secure an allowable room width dimension W (see FIG. 2).

  Therefore, the height dimension H and the width dimension W of the front room 1 where the power train elements are arranged are not defined by the layout of the air cleaner 9 and the inverter 12, and the height dimension H and the width dimension of the front room 1 are set. W can be reduced, and the front room 1 can be made compact.

In the first embodiment, the horizontal engine 4, the motor / generator 6 and the belt type continuously variable transmission 8 are elastically supported with respect to the suspension member 15, and the inverter 12 is fixedly supported with respect to the side member 16. did.
For example, when the inverter is supported with respect to the power unit, vibrations from the engine and the motor / generator are transmitted to the inverter as they are, and the inverter is liable to malfunction, and the inverter durability is reduced.
On the other hand, the vibration from the horizontally placed engine 4 and the motor / generator 6 is transmitted to the inverter 12 through the elastic support portion → the suspension member 15 → the side member 16, and the inverter 12 is connected to the engine. Protected against vibration and motor vibration.

In the first embodiment, the inverter 12 is disposed in the front region of the upper space S that is offset from the upper position of the motor / generator 6 and the belt type continuously variable transmission 8 to the vehicle front side. And the structure which has arrange | positioned the air cleaner 9 in the rear side area | region of the upper space S which is the upper position of the motor / generator 6 and the belt-type continuously variable transmission 8, and adjoins the horizontal engine 4 in the vehicle width direction was employ | adopted.
For example, when the power unit vibrates, the relative distance between the inverter 12 and the motor / generator 6 is displaced, so that the length of the three-phase AC harness 26 that connects the inverter 12 and the motor / generator 6 can be absorbed by the relative displacement. It is necessary to ensure this. On the other hand, the air cleaner 9 is connected to the intake pipe 24 of the horizontal engine 4 so that the length of the bellows pipe 25 connected to the horizontal engine 4 should be as close to the horizontal engine 4 as possible. good.
On the other hand, the distance between the inverter 12 and the motor / generator 6 is increased due to the offset arrangement on the vehicle front side, so that the length of the three-phase AC harness 26 is sufficient to absorb the relative displacement and prevent the harness from being disconnected. Is secured. On the other hand, the arrangement of the air cleaner 9 adjacent to the engine shortens the length of the bellows pipe 25 connected to the horizontally mounted engine 4, so that not only the space efficiency is improved but also the resistance to introducing clean air into the engine is kept low.

[Controller placement on top of inverter]
When arranging an electronic control unit as a power train system element in the front room 1, it is necessary to arrange the electronic control unit with improved space efficiency. Hereinafter, the controller placement action on the upper part of the inverter reflecting this will be described.

As described above, the first embodiment employs a configuration in which the electronic control units (the engine controller 11 and the transmission controller 14) that control the power train system are arranged in a hierarchical manner in the vehicle upper space of the inverter 12. .
By adopting this configuration, the vehicle upward space of the inverter 12 arranged in the front room 1 is utilized as an installation space for the electronic control unit (the engine controller 11 and the transmission controller 14). Therefore, space efficiency can be improved as compared with the case where the electronic control unit is arranged at a position independent of the inverter.

In the first embodiment, the horizontal engine 4 and the motor / generator 6 are arranged in the vehicle width direction in the front room 1 to form an upper space S in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8. To do. And the structure which arrange | positions the inverter 12 in the vehicle front side area | region among the upper spaces S was employ | adopted.
When electronic control units are arranged on the inverter 12 in a layered manner, the space in which the inverter 12 is to be arranged requires a wide space in the vehicle vertical direction. On the other hand, when the upper space S is formed in the upper region of the motor / generator 6 and the belt type continuously variable transmission 8, as shown in FIG. 4, the motor / generator 6 and the belt type continuously variable transmission 8 are directly above. It is possible to secure a wider space in the vehicle front side region that deviates from the region directly above the vehicle front side than in the region.
Therefore, by arranging the inverter 12 in the vehicle front side region in the upper space S, there is enough space to arrange the electronic control units (the engine controller 11 and the transmission controller 14) on the inverter 12 in a layered manner. Secured.

In the first embodiment, the engine controller 11 is arranged at the upper position of the inverter 12, and the transmission controller 14 is arranged at the upper position of the engine controller 11.
When the number of harnesses connected to the engine controller 11 and the number of harnesses connected to the transmission controller 14 are compared, the number of harnesses connected to the engine controller 11 that performs various controls related to the horizontally placed engine 4 is determined as the transmission controller. More than the number of harnesses connected to 14. For this reason, if the connection work to the engine controller 11 having a large number of harnesses is to be performed after the connection work to the transmission controller 14, the trouble of performing the work while avoiding the harnesses of the transmission controller 14 already routed. Cost.
Therefore, when the engine controller 11 and the transmission controller 14 are assembled, the connection work to the engine controller 11 having a large number of harnesses is performed first, and then the connection work to the transmission controller 14 having a small number of harnesses is performed. Efficiency is improved.

In the first embodiment, the signal line harness 18 connected to the engine controller 11 and the transmission controller 14 is disposed in the vehicle width direction space formed between the rear surface of the both controllers 11 and 14 on the vehicle rear side and the protective plate portion 19a. Adopted a configuration of wiring along.
For example, in the case of a frontal collision without a protective plate, the inverter 12 and the controllers 11 and 14 move to the rear side of the vehicle, and both the controllers 11 and 14 have a finger in the pie. At this time, the signal line harness 18 sandwiched between the controllers 11 and 14 and the air cleaner 9 is easily damaged.
On the other hand, even if both controllers 11 and 14 move to the vehicle rear side at the time of a front collision, the protective plate portion 19a interferes with the air cleaner 9. For this reason, the signal line harness 18 wired along the vehicle width direction space formed between the rear surfaces of the controllers 11 and 14 on the vehicle rear side and the protective plate portion 19a is protected from damage.

In the first embodiment, the traveling battery 31 is mounted in the rear room 3 on the vehicle rear side. And the structure which connects the power line harness 39 extended in the vehicle front side from the battery 31 for driving | running | working to the vehicle rear side position of the inverter 12 was employ | adopted.
With this configuration, the inverter 12, the engine controller 11, and the transmission controller 14 serve as a protection block against impact force that is input to the power line harness 39 from the front of the vehicle at the time of a front collision, and the power line harness 39 is protected from damage.

Next, the effect will be described.
In the power train element arrangement structure of the FF plug-in hybrid vehicle of the first embodiment, the effects listed below can be obtained.

(1) In the power train system element arrangement structure of the hybrid vehicle (FF plug-in hybrid vehicle) in which the power train system elements including the horizontal engine 4 and the motor (motor / generator 6) are arranged in the power unit room (front room 1),
An inverter 12 connected to the motor (motor / generator 6) is arranged in the power unit room (front room 1),
Electronic control units (the engine controller 11 and the transmission controller 14) for controlling the power train system are arranged in a hierarchical manner in the space above the inverter 12 in the vehicle.
Therefore, the power unit room (front room 1) can be made compact by arranging the inverter 12 and the electronic control unit (engine controller 11 and transmission controller 14) in the power unit room (front room 1) with high space efficiency. Can do.

(2) The horizontal engine 4 and the motor (motor / generator 6) are arranged in the vehicle unit width direction in the power unit room (front room 1), so that the upper side of the motor (motor / generator 6) Forming a space S,
In the upper space S, the inverter 12 is disposed in the vehicle front side region.
For this reason, in addition to the effect of (1), a sufficient space for arranging the electronic control units (the engine controller 11 and the transmission controller 14) on the inverter 12 in a layered manner can be secured.

(3) The electronic control unit is an engine controller 11 and a transmission controller 14,
An engine controller 11 is disposed at an upper position of the inverter 12, and a transmission controller 14 is disposed at an upper position of the engine controller 11.
For this reason, in addition to the effect of (1) or (2), the assembly of the engine controller 11 to the upper position of the inverter 12 is preceded, and then the transmission controller 14 is assembled to improve the harness connection work efficiency. Can do.

(4) A vehicle in which a signal line harness 18 connected to the engine controller 11 and the transmission controller 14 is formed between the rear surfaces of the controllers 11 and 14 on the vehicle rear side and a protective plate (protective plate portion 19a). Wiring was performed along the space in the width direction.
For this reason, in addition to the effect of (3), at the time of a front collision, the protection plate portion 19a becomes an interference wall with a member (air cleaner 9) adjacent to the rear side of the vehicle, and the signal line harness 18 can be protected from damage.

(5) The power unit room is the front room 1 on the front side of the vehicle, and the traveling battery 31 is mounted on the rear room 3 on the rear side of the vehicle.
A power line harness 39 extending from the traveling battery 31 to the vehicle front side is connected to the vehicle rear side position of the inverter 12.
For this reason, in addition to the effects (1) to (4), at the time of the front collision, the inverter 12 and the electronic control unit (the engine controller 11 and the transmission controller 14) protect the impact force input to the power line harness 39 from the front of the vehicle. It becomes a block and can protect the power line harness 39 from damage.

  As mentioned above, although the power train system element arrangement structure of the hybrid vehicle of the present invention has been described based on the first embodiment, the specific configuration is not limited to the first embodiment, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention according to the paragraph.

  In the first embodiment, an example in which the engine controller 11 and the transmission controller 14 that control the power train system are arranged in a hierarchical manner in the vehicle upper space of the inverter 12 is shown. However, an example in which only the engine controller is arranged in the vehicle upper space of the inverter 12 or an example in which only the transmission controller is arranged may be used. Further, an example in which one, two, or three or more of the engine controller, the transmission controller, and the other electronic control units are arranged in the vehicle upward space of the inverter 12 may be used.

  In the first embodiment, the inverter 12 is disposed in the front area of the upper space S that is offset from the upper position of the motor / generator 6 to the front side of the vehicle, and the air cleaner 9 is located at the upper position of the motor / generator 6, 4 is shown in the rear region of the upper space S adjacent to the vehicle width direction. However, the air cleaner may be an example of being arranged on the top of the horizontal engine.

  In Example 1, the example which applies the power train system element arrangement structure of this invention to FF plug-in hybrid vehicle was shown. However, the power train system element arrangement structure of the hybrid vehicle of the present invention is also applied to an FF hybrid vehicle having no plug-in structure, an RR hybrid vehicle in which a power train system element is arranged in the rear room, and an RR plug-in hybrid vehicle. be able to.

  In the first embodiment, an example of application to a parallel type hybrid vehicle with one motor and two clutches is shown. However, the hybrid vehicle type can also be applied to a parallel hybrid vehicle having a differential mechanism, an assist hybrid vehicle in which an engine and a motor are directly connected, and a series hybrid vehicle in which an engine and a motor are separated. In short, the power train system element arrangement structure of the present invention can be applied to a hybrid vehicle in which power train system elements including a horizontally placed engine and a motor are arranged in a power unit room.

1 Front room (Power unit room)
2 Center room 3 Rear room 4 Horizontal engine 5 First clutch 6 Motor / generator (motor)
7 Second clutch 8 Belt type continuously variable transmission 9 Air cleaner 10 Starter motor 11 Engine controller (electronic control unit)
12 Inverter 13 Motor controller 14 Transmission controller (electronic control unit)
18 Signal line harness 19 First mounting plate 19a Protection plate (protection plate)
31 Traveling battery 39 Power line harness S Upper space

Claims (5)

In the power train system element arrangement structure of the hybrid vehicle in which the power train system elements including the horizontally placed engine and the motor are arranged in the power unit room,
In the power unit room, an inverter connected to the motor is arranged,
A power train system element arrangement structure for a hybrid vehicle, wherein electronic control units for controlling a power train system are arranged in a hierarchical manner in the vehicle upper space of the inverter. In the power train system element arrangement structure of the hybrid vehicle according to claim 1,
In the power unit room, by arranging the horizontally mounted engine and the motor in the vehicle width direction, an upper space is formed in the upper region of the motor,
The power train system element arrangement structure of a hybrid vehicle, wherein the inverter is arranged in a vehicle front side region of the upper space. In the power train system element arrangement structure of the hybrid vehicle according to claim 1 or 2,
The electronic control unit is an engine controller and a transmission controller,
An engine controller is disposed at an upper position of the inverter, and a transmission controller is disposed at an upper position of the engine controller. In the power train system element arrangement structure of the hybrid vehicle according to claim 3,
A hybrid vehicle characterized in that a signal line harness connected to the engine controller and the transmission controller is wired along a vehicle width direction space formed between a rear surface of a rear side of the both controllers and a protective plate. Powertrain element arrangement structure. In the power train system element arrangement structure of the hybrid vehicle according to any one of claims 1 to 4,
The power unit room is a front room on the vehicle front side, and a battery for traveling is mounted on a rear room on the vehicle rear side,
A power train system element arrangement structure for a hybrid vehicle, wherein a power line harness extending from the traveling battery to the vehicle front side is connected to a vehicle rear side position of the inverter.