MOTOR VEHICLE OR TURBOCHARGER INSTALLATION FEATURING A SIMPLIFIED TURBOCHARGER COOLING CIRCUIT

Abstract

The invention relates to a motorized assembly (100) for a vehicle or static installation, comprising a turbocharged internal combustion engine (50) (40), including a water outlet housing (30) arranged to collect coolant from the engine outlet (50), and a cooling circuit (20) comprising a single-piece component (60) incorporating a three-way connector (10) having a first coolant inlet (1) and directing it either through a second bypass outlet (2) to the water outlet housing (30), or through a third turbocharger outlet (3) to the turbocharger (40) for cooling, said single-piece component (60) having a bypass circuit between the second outlet (2) and an inlet arranged to cooperate in a complementary manner with the water outlet housing (30), and being arranged to be fixed directly to the water outlet housing (30). Figure 1

Description

Title of the invention: MOTOR VEHICLE OR TURBOCHARGER INSTALLATION COMPRISING A SIMPLIFIED TURBOCHARGER COOLING CIRCUIT

[0001] The invention relates to a motorized assembly comprising at least one supercharged internal combustion engine with at least one turbocharger, cooled by a coolant and comprising a water outlet housing arranged to collect said coolant at the outlet of said at least one internal combustion engine, and at least one cooling circuit arranged for the cooling of said at least one internal combustion engine and / or said at least one turbocharger.

[0002] The invention relates more particularly to a motor vehicle comprising such a motorized assembly.

[0003] The invention relates more particularly to a static installation comprising such a motorized assembly.

[0004] The invention relates to the field of thermal engines, and more specifically to the cooling circuit of a turbocharger.

[0005] The current solution includes a three-way connector, which redirects the flow of water or coolant either to the water outlet housing, known as the BSE (bypass circuit), or to the turbocharger for cooling. The term "water" is used here for simplicity; it is understood that this can refer to any suitable coolant.

[0006] More specifically, a water outlet housing collects the water exiting the engine. A fitting on the water outlet housing, comprising two pipes, is mounted on the water outlet housing. A lower pipe interfaces with a bypass circuit hose, which connects to a three-way connector. This connector is attached to the engine cylinder block via a three-way connector bracket secured with screws. An upper pipe returns the water from the turbocharger to the water outlet housing.

[0007] The three-way connector includes, in addition to the channel reserved for this bypass circuit called the bypass output, an output channel carrying a conduit to the turbocharger, and a water inlet channel carrying a water inlet pipe.

[0008] Document CN11490921 IB shows an arrangement of the turbocharger cooling portion of a supercharged engine, which includes a water-to-air cooling system and a supercharger cooling system. The water-to-air cooling system connects directly to a water reservoir. The vehicle's auxiliary system consists of a connection between the turbocharger and the cylinder block, where the turbocharger's air inlet is fixed to an air outlet on the side of the cylinder block. However, a mounting bracket on the cylinder block is required.

[0009] The turbocharger cooling system according to the prior art comprises several components: water inlet pipe to the three-way connector, three-way connector mounting bracket on the cylinder block, three-way connector fixed to its bracket with several screws, bypass outlet pipe, outlet pipe to the turbocharger, water return pipe from the turbocharger to the water outlet housing, water outlet housing tip.

[0010] The objective of the present invention is to remedy these drawbacks by proposing to optimize the components of the turbocharger cooling system by removing the bypass circuit pipe, the three-way connector mounting bracket, and the three-way connector and its fixing screws on the cylinder block, replacing them with a single component capable of fulfilling all their functions.

[0011] To achieve this objective, the invention proposes a motorized assembly comprising at least one supercharged internal combustion engine with at least one turbocharger, cooled by a coolant and comprising a water outlet housing arranged to collect said coolant at the outlet of said at least one internal combustion engine, and at least one cooling circuit arranged for the cooling of said at least one internal combustion engine and / or said at least one turbocharger.

[0012] According to the invention, said at least one cooling circuit comprises a single-piece component integrating a three-way connector having a first coolant inlet channel arranged to direct a flow of said coolant either through a second bypass outlet channel to said water outlet housing, or through a third turbocharger outlet channel to said at least one turbocharger for cooling it, said single-piece component comprising a bypass circuit between said second bypass outlet channel and an inlet arranged to cooperate in a complementary manner with said water outlet housing, said single-piece component being arranged to be fixed directly to said water outlet housing.

[0013] Thus the cooling circuit is very compact and does not require any mounting support for its assembly on the engine, in particular on the cylinder block.

[0014] More particularly, said cooling circuit includes an upper pipe arranged to ensure the return of said coolant from said at least one turbocharger to said water outlet housing, a water inlet pipe connecting a coolant reservoir to said first coolant inlet way, and a conduit between said third turbocharger outlet way and said at least one turbocharger.

[0015] The number of these tubes is thus reduced to a minimum, and facilitates factory assembly as well as maintenance.

[0016] More particularly, said upper tubing and / or said water inlet pipe and / or said conduit are one piece with said one-piece component.

[0017] Thus the number of components to be assembled on the engine is further reduced.

[0018] More particularly, said one-piece component has a unique interface surface for its watertight attachment to said water outlet housing.

[0019] Thus the fixing is precise and simple, as well as quick.

[0020] The invention further relates to a motor vehicle comprising such a motorized assembly.

[0021] The invention further relates to a static installation comprising such a motorized assembly.

[0022] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: - [Fig.l] schematically illustrates a motorized assembly according to the invention, comprising a supercharged internal combustion engine with a turbocharger, and a cooling circuit comprising a monobloc component which constitutes an end of the water outlet housing mounted at the engine outlet, and which integrates a three-way connector; - [Fig.2] illustrates schematically, and in perspective, in its position of mounting on the motor, the one-piece component in the insertion position on the end of the water outlet housing; - [Fig.3] schematically illustrates this one-piece component in front view; - [Fig.4] schematically illustrates this one-piece component with a view to LEFT ; - [Fig.5] schematically illustrates this one-piece component in right-hand view; - [Fig.6] schematically illustrates this one-piece component in top view; - [Fig.7] schematically illustrates this one-piece component with a view to below; - [Fig.8] schematically illustrates a motor vehicle comprising such a motorized assembly; - [Fig.9] schematically illustrates a static installation comprising such a motorized unit.

[0023] The invention relates to a motorized assembly 100 comprising at least one turbocharger 50, and at least one cooling circuit 10 which is arranged for the cooling of said at least one compressor 50.

[0024] The invention proposes a direct connection system by eliminating the mounting bracket on the cylinder housing. More particularly, the invention proposes a three-way connector 10 integrated into the end of the water outlet housing.

[0025] Thus, this motorized assembly 100 comprises at least one supercharged internal combustion engine 50, with at least one turbocharger 40, cooled by a coolant and comprising a water outlet housing 30 arranged to collect this coolant at the outlet of this at least one internal combustion engine 50, and at least one cooling circuit 20 arranged for the cooling of the at least one internal combustion engine 50 and / or the at least one turbocharger 40.

[0026] According to the invention, this at least one cooling circuit 20 comprises a monobloc component 60 incorporating a three-way connector 10 having a first coolant inlet port 1 arranged to direct a flow of coolant either through a second bypass outlet port 2 to the water outlet housing 30, or through a third turbocharger outlet port 3 to the at least one turbocharger 40 for cooling. The monobloc component 60 includes a bypass circuit between the second bypass outlet port 2 and an inlet arranged to cooperate in a complementary manner with the water outlet housing 30. This monobloc component 60 is arranged to be fixed directly to the water outlet housing 30.

[0027] More particularly, the cooling circuit 20 includes an upper pipe 4 arranged to ensure the return of the coolant from the at least one turbocharger 40 to the water outlet housing 30, a water inlet pipe 5 connecting a coolant reservoir 6 to the first coolant inlet 1, and a conduit 7 between the third turbocharger outlet 3 and the at least one turbocharger 40.

[0028] More particularly, the upper tube 4 and / or the water inlet pipe 5 and / or the conduit 7 are one piece with the one piece component 60, for example by overmolding.

[0029] More particularly, the one-piece component 60 has a unique interface surface 6030 for its watertight attachment to the water outlet housing 30.

[0030] The invention also relates to a motor vehicle 200 comprising such a motorized assembly 100.

[0031] The invention also relates to a static installation 300 comprising such a motorized assembly 100.

[0032] The invention thus proposes a monobloc component 60 which constitutes an end piece of the water outlet housing 30, and which integrates a three-way connector 10.

[0033] This one-piece component 60 comprises both the three-way connector 10 and the water outlet housing nozzle in a single piece, which also eliminates the three-way connector mounting bracket on cylinder housing, eliminating the three-way connector mounting screws on its mounting bracket, and eliminating the bypass circuit hose, consequently the management of references and the number of factory assembly operations are optimized.

[0034] Only the upper pipe carrying the water return from the turbocharger to the water outlet housing, the conduit connected to the outlet of the three-way connector to the turbocharger, and the water inlet pipe connected to the water inlet of the three-way connector remain connected to this new monobloc component 60, which is mounted directly on the water outlet housing 30. The bypass is now integrated into the new monobloc component. In a particular embodiment, the upper pipe, the conduit, and the water inlet pipe are also part of the monobloc component 60.

[0035] The invention simplifies the turbocharger cooling circuit, simplifies its assembly by reducing the number of assembly operations, reduces the number of components and associated costs, and reduces the engine manufacturing cost. In particular, it eliminates the mounting bracket for the three-way connector on the cylinder block, the screws securing the three-way connector to its bracket, and the bypass circuit hose.

[0036] The assembly operations eliminated are the mounting of the mounting bracket on the cylinder housing and the mounting of the three-way connector by its fixing screws on this bracket, which represents the main time saving, and also the mounting of the bypass pipe between the end of the water outlet housing and the three-way connector.

Claims

Demands

1. A motorized assembly (100) comprising at least one internal combustion engine (50) supercharged by at least one turbocharger (40), cooled by a coolant and comprising a water outlet housing (30) arranged to collect said coolant at the outlet of said at least one internal combustion engine (50), and at least one cooling circuit (20) arranged for the cooling of said at least one internal combustion engine (50) and / or said at least one turbocharger (40), characterized in that said at least one cooling circuit (20) comprises a single-piece component (60) incorporating a three-way connector (10) comprising a first coolant inlet channel (1) and arranged to direct a flow of said coolant, either through a second bypass outlet channel (2) to said water outlet housing (30), or through a third turbocharger outlet channel (3) to said at least one turbocharger (40) for cooling it,said monobloc component (60) comprising a bypass circuit between said second bypass output channel (2) and an input arranged to cooperate in a complementary manner with said water outlet housing (30), said monobloc component (60) being arranged to be fixed directly to said water outlet housing (30).

2. Motorized assembly (100) according to claim 1, characterized in that said cooling circuit (20) comprises an upper pipe (4) arranged to ensure the return of said coolant from said at least one turbocharger (40) to said water outlet housing (30), a water inlet pipe (5) connecting a coolant reservoir (6) to said first coolant inlet (1), and a conduit (7) between said third turbocharger outlet (3) and said at least one turbocharger (40).

3. Motorized assembly (100) according to claim 2, characterized in that said upper tube (4) and / or said water inlet pipe (5) and / or said conduit (7) are one piece with said one-piece component (60).

4. Motorized assembly (100) according to any one of claims 1 to 3, characterized in that said one-piece component (60) comprises a

5.

6. unique interface surface (6030) for its watertight sealing water outlet housing (30). Motor vehicle (200) comprising a motorized assembly (100) according to any one of claims 1 to 4. Static installation (300) comprising a motorized assembly (100) according to any one of claims 1 to 4.

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