阅读说明：本技术 用于电动马达的包括集成导管的安装件以及包括这种安装件的动力传动系 (Mounting for an electric motor comprising an integrated conduit and powertrain comprising such a mounting ) 是由 J-P·米永 L·泰西耶 于 2018-11-20 设计创作，主要内容包括：本发明涉及一种用于电动马达的安装件(10),该安装件包括至少三个不同的部分：·-用于安装在热力发动机上的部分(11),·-用于固定电动马达的部分(12),·-形成用于流体循环的集成导管(13)的部分。本发明还涉及一种包括这种安装件的混合式动力传动系和一种包括这种动力传动系的驱动系统。(The invention relates to a mounting (10) for an electric motor, comprising at least three distinct parts: -a portion (11) for mounting on a heat engine, -a portion (12) for fixing an electric motor, -a portion forming an integrated conduit (13) for the circulation of a fluid. The invention also relates to a hybrid powertrain comprising such a mount and to a drive system comprising such a powertrain.)

1. An electric motor mount (10) comprising at least three distinct portions:

-a mounting portion (11) for mounting on a heat engine,

-a fixing portion (12) for fixing the electric motor,

-forming part of a fluid circulation integrated conduit (13).

2. The mount of claim 1, wherein the mount (10) is a plate.

3. The mount of claim 2, wherein the mounting portion (11) comprises an aperture (15) for passing a drive shaft of the heat engine and/or the fixing portion comprises an aperture (16) for passing a drive shaft of the electric motor (4).

4. The mount of claim 2 or claim 3, wherein the integrated conduit (13) extends along an axis (A) contained in a plane in which a web formed by the mount (10) extends.

5. The mount of any one of the preceding claims, wherein the integrated conduit (13) and the mount (10) assembly form a single piece part.

6. A hybrid powertrain comprising:

-a heat engine for generating heat in a heat-generating chamber,

-a mounting (10) according to any of the preceding claims, the mounting portion (11) of which is fixed to the heat engine,

-an electric motor (4) fixed to the fixed part (12) so as to be supported by the mount,

-a first fluid link (21) between the first end of the integration conduit (13) and the heat engine.

7. A hybrid drive system, comprising:

-the powertrain (1) of claim 6,

-a heat exchanger (9),

-a second fluid link (22) between the second end of the integration conduit (13) and the heat exchanger.

8. The drive system of claim 7, wherein the first fluid link (21), the integrated conduit (13) and the second fluid link (22) together form a cooling circuit conduit at least partially surrounding the electric motor (4).

9. The powertrain as claimed in claim 6 or the drive system as claimed in claim 7 or 8, wherein the one or more fluid links (21, 22) each comprise at least one pipe, the one or more pipes being fitted to an end fitting (30) fitted to a respective end of the integrated conduit (13).

10. The powertrain and/or drive system of claim 9, comprising a clamping collar (24) that clamps the one or more conduits around the corresponding one or more end fittings (30).

11. A vehicle comprising a powertrain (1) and/or a drive system as claimed in any one of the foregoing claims.

Technical Field

The present invention relates to the field of engines, in particular hybrid powertrains.

More particularly, the present invention relates to an electric motor mount, a portion of which forms a portion of a fluid circulation conduit.

Background

In a hybrid powertrain, the transmission may suitably be driven by a heat engine or an electric motor. Typically, the electric motor is placed laterally with respect to the heat engine, which causes problems in arranging the power train in the engine compartment of the vehicle. In particular, the arrangement of the heat engine cooling circuit is difficult; this must be taken into account when placing the electric motor. Typically, this arrangement is achieved at the expense of compactness.

Disclosure of Invention

Therefore, the technical problem that the present invention aims to solve is how to improve the arrangement of a hybrid powertrain.

To this end, a first subject of the invention is a mount for an electric motor, comprising at least three distinct portions:

-a mounting portion for mounting on a heat engine,

-a fixing portion for fixing the electric motor,

-forming part of a fluid circulation integrated conduit.

Thus, when the mount is arranged in the hybrid powertrain, the integrated conduit may be fluidly connected on one side to a cooling circuit formed in a cylinder block of the heat engine and on the other side to the rest of the powertrain cooling circuit, e.g. to a heat exchanger.

This makes it possible to form a larger loop with the cooling circuit conduit of the heat engine (hereinafter referred to as cooling conduit). The electric motor can therefore be placed inside the loop, in particular as close as possible to the heat engine.

The integrated conduit is thus an intermediate portion of the cooling conduit forming the loop. Since the integrated conduit is part of the mounting, it is rigid and thus ensures a more secure fixation of the formed loop with less displacement.

The mount according to the invention may optionally have one or more of the following features:

-the mounting is a plate; this is a form that is easy to produce and is optimal for engine mounts;

the mounting portion comprises an aperture for passing through a drive shaft of the heat engine and/or the stationary portion comprises an aperture for passing through a drive shaft of the electric motor; thus, these motors can be placed both on one side of the support and can be each firmly fixed thereto;

the integrated conduit extends along an axis contained in a plane on which the plate formed by the mount extends; this improves in particular the volume of the cooling duct and also its fixing firmness;

-the integrated conduit (13) and the mounting member (10) assembly form a one-piece part; the conduit thus ensures a firm fixation of the cooling conduit, reducing displacements;

the integrated conduit may be produced in one piece with the mounting member in the casting of the mounting member or on a member forming the rest of the mounting member in the overmoulding of the integrated conduit;

the interior of the integrated conduit may be obtained in the casting of the mounting or its overmoulding, or subsequently by machining in a corresponding cast or overmoulded part.

Another subject of the invention is a hybrid powertrain comprising:

-a heat engine for generating heat in a heat-generating chamber,

-a mounting according to the invention, the mounting part of which is fixed to the heat engine;

-an electric motor fixed to the fixed part so as to be supported by the mount.

Such a powertrain is compact and allows a quick connection of a cooling circuit, a part of which is formed by an integrated conduit.

For example, the hybrid powertrain may include a first fluid link between the first end of the integrated conduit and the heat engine. Therefore, prior to placing the powertrain in the engine compartment of the vehicle, a partial cooling connection has been made.

Another subject of the invention is a hybrid drive system comprising:

-a power train according to the invention,

-a heat exchanger,

-a second fluid link between the second end of the integrated conduit and the heat exchanger.

Thus, the first fluid link, the integrated conduit and the second fluid link together form a cooling circuit conduit.

The drive system according to the invention may optionally have one or more of the following features:

-the cooling circuit conduit at least partially surrounds the electric motor; thus, the electric motor can be housed as close as possible to the heat engine without having to provide a passage for the cooling circuit between the two motors;

the exchanger is an oil/water exchanger, the cooling circuit being connected to the cylinder block of the heat engine at the output of the integrated cooling circuit, and the heat exchanger being also connected to a lubrication circuit arranged to exchange heat with the cooling circuit; this makes it possible to reheat the oil circulating in the lubrication circuit by the coolant circulating in the cooling circuit; in particular, the lubrication circuit may be a heat engine lubrication circuit.

The powertrain and/or the drive system according to the invention may optionally have one or more of the following features:

-the one or more fluid links each comprise at least one pipe, the one or more pipes being fitted to an end fitting fitted to a respective end of the integrated conduit;

-comprising a clamping collar that clamps one or more pipes around the corresponding one or more end fittings.

In the present application, unless otherwise specified, the terms "transverse", "longitudinal", "vertical", "right", "left", "top", "bottom", "above" and "front" are applied according to the longitudinal axis of the vehicle intended to receive the subject matter of the present invention and from the rear to the front.

Drawings

Other features and advantages of the invention will become apparent from a reading of the following detailed description of non-limiting examples, which for an understanding thereof will be made with reference to the accompanying drawings, in which:

fig. 1 is a partial plan view of a thermal power train according to the prior art;

fig. 2 is a partial plan view of a powertrain according to the invention;

figure 3 is a perspective view from the front and left of figure 2;

fig. 4 corresponds to a perspective view from the front and right of fig. 2 without the electric motor;

fig. 5 is a partial perspective view from the right and above of the electric motor mount of fig. 4;

figure 6 is a perspective view of an end fitting secured in the mount of figure 5;

figure 7 is a section of figure 5 from the left side, but with the fluid link connected to the mount.

Detailed Description

Fig. 1 illustrates a conventional thermal powertrain M. Only a portion of the powertrain M is shown. This is the portion which is contained on the one hand in a vertical and transverse plane P 'relative to the axis of the heat engine'_TAnd on the other hand in the relative motionVertical and longitudinal plane P 'of the axis of the heat engine of the drive train M'_LBefore (c) is performed. With regard to the heat engine, only the cylinder block 2 thereof is shown.

A starter D and an alternator are mounted on the cylinder block 2. A cooling circuit conduit C connected to the cylinder block 2 forms part of a loop around the starter D and the alternator. Due to the small size of the starter and alternator, the passage of the duct can be formed by one or more pipes around the starter D without the width of the powertrain M being too large and without large displacements occurring for these pipes.

Fig. 2 illustrates an example of a hybrid powertrain 1 according to the present invention comprising a heat engine having a cylinder block 2 similar in size to the cylinder block illustrated in fig. 1.

In this example, the axis of the engine, or the longitudinal axis of the engine, is oriented transversely. Which is parallel to the alignment direction of the cylinder bodies 3 (also referred to as cylinders) of the cylinder block 2.

According to the invention, the drive train 1 also comprises an electric motor 4, which as here can be arranged alongside the cylinder block 2.

As can be seen in fig. 1 and 2, the electric motor 4 has a width greater than that of the starter D in a conventional heat engine, thus increasing the volume of the power train 1, here in front of the cylinder block 2, accordingly.

Adapting the cooling circuit duct formed by a duct that completely surrounds the electric motor 4 as in the prior art would result in the use of a length of duct that, in addition to the cost, would cause large displacements of the duct when the vehicle in which the powertrain is installed is running and interference with surrounding parts.

As explained below, one solution of the invention is to form part of the conduit of the cooling circuit by means of a part of the mounting 10 of the electric motor 4.

The mount 10 is fixed to the cylinder block 2, and the electric motor 4 is fixed to the mount 10.

According to the invention, as here, the cylinder block 2 is intended to be fixed to the chassis of the vehicle, so that the cylinder block 2 supports the mounting 10 and therefore indirectly the electric motor 4.

According to the invention, as here and as shown in fig. 2 and 3, the mounting 10 is mounted on the coupling face of the heat engine, in other words between the cylinder block and the gearbox, more specifically between the cylinder block 2 and the hybrid module 8 linked to the gearbox. As here, the electric motor 4 may be fixed on the same side (referred to as a first side) of the mount 10 as the cylinder block 2.

Here, on a second side of the mount, opposite to the first side, a mixing module 8 is mounted.

The mixing module includes:

a clutch 8a mounted on the axis of the end of the crankshaft (not shown) of the heat engine, which is able to drive the clutch 8a,

a pulley 6 driven by the electric motor 4 and obviously linked to the clutch via a belt 7.

According to various circumstances, the hybrid module makes it possible to drive the clutch via one or the other of the motors in order to propel the vehicle thermally or electrically.

The mount 10 is shown in isolation in figure 5. Here, the mounting is formed by a plate substantially comprising a planar portion 14, which plate itself comprises a mounting portion 11 and a fixing portion 12.

The mounting portion 11 includes a first through-going opening 15 and a first through-going fixing hole 17. The fixed part 12 comprises a second through aperture 16.

In fig. 5, only the mount 10 is shown in a longitudinal plane P with respect to the axis of the motor_LThe front part.

The panels forming the mount 10, and hence the planar portion 14, extend substantially in a plane (referred to as the panel plane). According to the invention, as here, the plane of the plate may be substantially at right angles to the axis of the heat engine.

The mounting member 10 also includes a portion that forms an integrated conduit 13. The integrated conduit 13 and the planar portion 14 form a one-piece part.

As here, the integrated conduit may be a cylindrical conduit having a circular internal cross-section. Thus, the integrated conduit 13 extends along its length along the conduit axis a. The conduit axis a may be parallel to the plate plane and, obviously, as can be seen in fig. 2 and 7, the conduit axis may be included in the plate plane. Here, the catheter axis a is vertical.

As can be seen in fig. 2 to 4, during assembly of the powertrain 1, the mounting portion 11 is mounted on the cylinder block 2 so that the coupling end of the crankshaft (not shown) of the heat engine passes through the first aperture 15 to connect to the clutch 8 a. The fixing hole 17 makes it possible to fix the flat portion 14 to the cylinder block 2, for example, by bolts.

The electric motor 4 is fixed to the fixed portion 12 such that the end of the drive shaft (not shown) of the electric motor passes through the second aperture 16 to be connected to the pulley 6. Such a fixation may for example be formed by a nut.

As can be seen in fig. 2 to 4, in particular in fig. 4, a cooling circuit conduit (hereinafter referred to as cooling conduit) is arranged in a loop between the coolant outlet 25 of the cylinder block 2 and the inlet 26 of such liquid into the exchanger 9, which loop is not closed itself.

The cooling duct is formed by:

a first duct 21 fluidly linking the coolant outlet 25 to the top end of the integrated conduit 13,

an integrated conduit 13, and

a second conduit 22 linking the bottom end of the integrated conduit 13 to an inlet 26 of such liquid into the exchanger 9.

Thus, once the coolant has absorbed heat by passing through the cooling circuit integrated in the cylinder block 2, it enters the exchanger 9 and reheats the oil circuit for lubricating the engine, for example the crankshaft bearings. In fig. 4, it can be seen that the exchanger is here oriented towards the oil outlet 40 of the cylinder block 2.

Here, the pipes 21, 22 are connected to an integrated conduit via an end fitting 30, as illustrated in fig. 6.

For example, as shown in fig. 7, the end fitting 30 is press-fitted in the integrated conduit 13 on one side and in the corresponding pipe 21, 22 on the other side. Here, projections 31, 32 are arranged on each side of the end fitting 30 and have a diameter which is substantially larger than the inner diameter of the pipes 21, 22, thereby allowing such a press fit to be achieved.

A seal 33 is arranged between these two projections 31, 32. The end fitting 30 is pressed into the corresponding pipe 21, 22 and the integrated conduit 13 until the seal 33.

The clamping collar 24 serves here to ensure the clamping of the pipes 21, 22 to the corresponding end fitting 30.

Therefore, the loop formed by the cooling duct makes it possible to allow a space for mounting the electric motor 4 side by side with the cylinder block 2. Therefore, the width direction of the power train 1 is saved.

According to the invention, as here, the integrated conduit 13 can be formed facing the face of the electric motor 4 fixed to the mounting 10. Therefore, the path (run) of the cooling duct passes through the outside of the space, between the electric motor 4 and the vehicle. Thus, the compactness of the powertrain 1 in the width direction, i.e., here in the longitudinal direction with respect to the vehicle, is saved.

Furthermore, the components used (such as the conduits 21, 22, the collar 24 and the end fitting 30) may be standard, which simplifies the design and validation of the powertrain 1.

According to an exemplary embodiment of the invention, the powertrain 1, the exchanger 9 and the cooling duct form a drive system.