CN107448330A - Multifunction module for the internal combustion engine of motor vehicles - Google Patents

Multifunction module for the internal combustion engine of motor vehicles Download PDF

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Publication number
CN107448330A
CN107448330A CN201710242138.6A CN201710242138A CN107448330A CN 107448330 A CN107448330 A CN 107448330A CN 201710242138 A CN201710242138 A CN 201710242138A CN 107448330 A CN107448330 A CN 107448330A
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CN
China
Prior art keywords
discharge gas
conduit
face
structural element
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710242138.6A
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Chinese (zh)
Other versions
CN107448330B (en
Inventor
D.佩特罗尼奥
G.斯皮内里
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Stellantis Europe SpA
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FCA Italy SpA
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Filing date
Publication date
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Publication of CN107448330A publication Critical patent/CN107448330A/en
Application granted granted Critical
Publication of CN107448330B publication Critical patent/CN107448330B/en
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1638—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

A kind of multifunction module (1) of internal combustion engine (E) for motor vehicles is incorporated with a part for discharge gas recirculation system and a part for engine cooling circuit.Multifunction module includes central structural element, and wherein metal body has the face (P6) of the end face for the cylinder cap (T) for being used to attach to engine (E).Body has the construction along the direction elongation of the longitudinal direction perpendicular to cylinder cap (T).The conduit (7) of circulation for the conduit (6) of the circulation of discharging gas and for engine coolant is formed in the metal body.Module also includes the EGR valve unit (3) in the first end face (P3) of the body, and for cooling down the heat exchanger (4) of discharge gas, the heat exchanger (4) is arranged in the second end face (P2) relative with the first end face (P3).

Description

Multifunction module for the internal combustion engine of motor vehicles
Technical field
The present invention relates to the cooling circuit of a part for the discharge gas recirculation system for being incorporated to engine and engine The multifunction module of the internal combustion engine for motor vehicles of a part, specifically, the module include being used to adjust recycling The EGR valve unit of flow of exhaust, and for being cooled down the heat exchange of the discharge gas of recycling by means of engine coolant Device.
Background technology
The multifunction module of the type indicated above is known so far (for example, seeing document DE 10 2,007 049 336 The B1 of A1, EP 2 037 116 and B1 of EP 1 793 115), wherein multifunction module includes central structural element, wherein metal Body has the face for the end face for being used to attach to engine cylinder cover.Such body has according to the module on the engine In installment state perpendicular to cylinder cap longitudinal direction direction elongated shape.
Conduit for the circulation of discharging gas and the conduit of the circulation for engine coolant are formed in division center In the metal body of element.Such conduit extends since the entrance opening of discharge gas and the entrance opening of cooling agent, The entrance opening is positioned on the attachment face, and is intended to press from both sides with enmgine exhaust and with the cooling agent of cylinder cap respectively Set connection.
Discharge gas conduit is terminated in the discharge gas vent opening for being intended to connect with motor intake manifold, but institute State coolant conduit to flow into thermostatic valve at least one coolant outlet opening associated with it, for control and engine cool The connection of the radiator of system.
In such multifunction module, the EGR valve unit for adjusting recycling flow of exhaust is arranged on described In the first end face of central structural element elongate body, and operatively planted along the discharge gas conduit.In addition, it is used for The heat exchanger for discharging gas is cooled down with cooling agent in the second end face of the elongate body of central structural element, The second end face is relative with the first end face that the EGR valve unit is mounted thereto.Heat exchanger have with each other in heat exchange The inner conduit of relation, it is operatively planted along the discharge gas conduit and the coolant conduit respectively.For discharging The by-pass conduit of gas is formed in the elongate body of central structural element, and discharge gas can be towards the discharge gas vent Open flow passes through the by-pass conduit, and is not passed through the heat exchanger, is planted in the by-pass conduit by means of by described more The by-passing valve of the vacuum actuator operation of functional module carrying.
The multifunction module of the type of the instruction above produced so far has some defects.First, EGR valve unit be subjected to by In Carbon deposition caused by the flow of exhaust through it (so-called " EGR cigarette ashes "), as a result such component is through after a while Efficiency reduces.In addition, all aforementioned known solutions provide the vacuum tank for the central structural element for being integrated to module, this Class vacuum tank results in the need for controlling vacuum actuator, vacuum actuator control aforesaid by-pass valve.Such vacuum tank is arranged on mould At block end, heat exchanger is adjacent to, causes the reduction of the free space of heat exchanger.Therefore, force to use relatively small heat exchanger, with There is relatively low discharge gas cooling efficiency.Another defect occurred in known solution is because gas is exchanging heat The gas density determined while cooling in device reduces, therefore slows down the flow of exhaust through heat exchanger.
The content of the invention
Based on it is an object of the invention to overcome occur in known solution the defects of being previously mentioned.
A further object of the present invention is to provide with the cheap multi-functional mould of limited size, the weight mitigated, manufacture Block.
In addition, a further object of the present invention is to provide the their entire life in module engine associated there Keep all effective multifunction modules of its function.
In view of realizing object above, the present invention relates to a kind of multifunction module for internal combustion engine, and it has instruction above All features, and be characterised by, the EGR valve unit is as follows in the heat exchanger upstream along discharge gas conduit Operatively position so that when the EGR valve unit is in opening, discharge gas is worn before being cooled down in heat exchanger Cross the EGR valve unit.
Due to this feature, therefore discharge gas and worn at a temperature of the temperature occurred in known solution is been considerably higher than EGR valve is crossed, therefore causes the risk of the Carbon deposition in EGR valve to reduce or be completely eliminated, and ensures such needle to engine The whole operation life-span keeps constant efficiency.
Also resided according to the modular character of the present invention, control the vacuum actuator of by-passing valve to arrange and be used for outside by module Vacuum source operation, thus the module does not have any vacuum source or tank.
Due to this feature, therefore the weight of module and size of population been considerably reduce.Specifically, compared in heat exchanger Side provides the known solution of the vacuum tank, is had the advantage that according to the multifunction module of the present invention, centre junction The whole second end face of the body of constitutive element part can be fully taken up by heat exchanger.This allows to obtain discharge gas using larger heat exchanger More effective cooling, without increase module overall dimension.Or it is therefore possible to using have and known solution class Like the heat exchanger of size, but been considerably reduce the overall dimension of module.
According to another preferred feature, the heat exchanger is configured so as to follow through its discharge gas as follows U-shaped path.
Due to this feature, therefore in view of the equivalent cooling effectiveness of discharge gas, along the heat exchanger of the longitudinal direction of module Size of population can been considerably reduce.
According to another preferred feature, the U-shaped path for the discharge gas through heat exchanger is by the first direction Flow of exhaust the first comb or flat passage limit, by for along the second direction opposite with first direction discharge gas The second comb or flat passage of stream limit, and by the pipe that the pipe of first row or flat passage are connected to second row or flat passage Medial compartment limits.
Due to this feature, it is possible to simple and inexpensive structure come discharge gas advance to heat exchanger while carry For the change of the whole cross section of the path for discharging gas.In particular it is possible to provide the pipe or flat logical of the second row Road limits the general path section in general path section for being less than and being limited by the pipe or flat passage of first row, so as to offset by due to Cool down and the reduction of discharge gas velocity caused by density reduction.
Brief description of the drawings
The other feature and advantage of the present invention are by from referring to the drawings following purely provided via non-limiting examples Description becomes apparent, wherein：
Fig. 1 be according to the figure of the preferred embodiment of the multifunction module of the present invention, wherein illustrate only discharge gas return path,
Fig. 2 is the figure similar to Fig. 1, wherein engine coolant loop is illustrate only,
Fig. 3 shows the perspective view of the above preferred embodiment of the multifunction module according to the present invention,
Figure 4 and 5 show two decomposition views of the module shown in Fig. 3, and which show respectively discharge gas return path and hair Motivation coolant circuit,
Fig. 6,7 be magnification ratio under two other perspective view, wherein according to the present invention module some home loops in order to Major part is clear and is shown as entity, and
Fig. 8 shows to form the diagrammatic section view of the heat exchanger of the part of the multifunction module according to the present invention.
Embodiment
Referring to the drawings, reference 1 indicates the multifunction module of the internal combustion engine for motor vehicles according to the present invention Preferred embodiment.
Fig. 1,2 diagrammatically illustrate multicylinder engine E cylinder cap T, and it has the use from intake line 5 to engine cylinder In the inlet manifold CA of air supply, and the exhaust for releasing gas of the discharge from engine cylinder in exhaust manifolds 17 Manifold CS.Fig. 2 also diagrammatically illustrates cylinder cap T cooling jacket J.
Module 1 is incorporated to one of a part for the discharge gas recirculation system of engine and the cooling circuit of engine Point.Specifically, the module include be used for adjust recycling flow of exhaust EGR valve unit 3, and for by means of Engine coolant come cool down recycling discharge gas heat exchanger 4.
EGR valve unit 3 and heat exchanger 4 are arranged at two opposite ends of central structural element 2.Referring in particular to Fig. 1-5, in Core structure element 2 includes metal body (such as aluminium), and it has the end face for the cylinder cap T for being used to attach to engine E (see Fig. 1,2) Face (is indicated) in Fig. 3-5 with P6.For example, such connection can be realized by means of screw, additionally provide with structural detail body 2 and with Sealing between the face of cylinder cap T contacts.Such construct details does not show that, therefore makes accompanying drawing simpler.
Such as Fig. 1, shown in 2, the body of structural detail 2 has basis perpendicular to the elongated of the direction of the longitudinal direction of cylinder cap Shape.The conduit 7 of circulation for the conduit 6 (be specifically shown in Fig. 1,4,7) of the circulation of discharging gas and for engine coolant (be specifically shown in Fig. 2,5,6) is formed in the central structural element metal body 2.
Discharge gas conduit 6 extends since the entrance opening 9 for the discharge gas being positioned on the face P6 of body 2, The face P6 is provided for being attached with cylinder cap (see Fig. 4 and 6,7).Coolant conduit 7 extends since entrance opening 8, and entrance is opened Mouth 8 is also positioned on the attachment face P6 in this case.
As seen in Figure 1, the opening 9 of the entrance in the module 1 for discharging gas is by means of forming leading in cylinder cap T Pipe 24 connects with inlet manifold CS.In addition as seen in Figure 2, for the cooling agent in module 1 entrance opening 8 and cylinder cap T Cooling agent chuck J connection.
Referring again to Fig. 1, discharge gas conduit 6 follows path (it will be discussed in more detail below), through body 2, until Into the end being connected in the exit opening 10 of intake line 5, to realize the discharge gas in motor intake manifold Recycling.
Reference picture 2, coolant conduit 7 connect with associating the exit opening 11 of thermostatic valve 19, cold with engine for controlling But the connection of the radiator of system.
EGR valve unit 3 and heat exchanger 2 are arranged at the opposite end of central structural element 2.
As by below preferably shown in, EGR valve unit 3 be operatively plugged on discharge gas conduit 6 in, for adjusting Section recycling flow of exhaust.Heat exchanger 4 has inner conduit, and it also will preferably show below, with being closed each other in heat exchange System, and operatively planted along the discharge gas conduit 6 and the coolant conduit 7 respectively.
By-pass conduit 65 for discharging gas is formed in the elongate body of central structural element 2 (see Fig. 1), row It can be flowed through towards the discharge gas vent opening 10 by going out gas, and be not passed through the heat exchanger 4.By-passing valve 13 (only exists Diagram is shown in Fig. 1) it is plugged in the by-pass conduit 65, it is vacuum actuated by means of being carried by the multifunction module 1 Device 14 operates.Actuator 14 shows and only schematically shown in Fig. 1 in figs. 3-5.Being using vacuum actuator must Want, to be effectively formed the power for the movable part that must be applied to by-passing valve.In shown example in Fig. 4,5, promote Dynamic device body is rigidly fixed to above body 2 on P4 (referring to the drawings), and control handle, and the handle is controlled by means of bar and bypassed The movable part of valve.
The first key character of the present invention is that EGR valve unit 3 is led in the upstream of heat exchanger 4 along discharge gas as follows Pipe 6 operatively positions so that when the EGR valve unit is in opening, discharge gas is cooling down it in heat exchanger 4 It is preceding to pass through the EGR valve unit 3.
Due to this feature, therefore discharge gas and passed through with being been considerably higher than the temperature of the temperature occurred in known solution EGR valve, so having reduced or completely eliminated the risk of the Carbon deposition in EGR valve 3, and it ensure that the needle to the whole of engine The individual life-span keeps constant efficiency.
According to the present invention module another be characterised by control by-passing valve 13 vacuum actuator 14 arrange for by Vavuum pump 15 (Fig. 1) operation outside module.The connection of actuator 14 and vavuum pump 15 is controlled by the electronic valve 16 of keying type.Electricity Sub- valve 16 is shown in figs. 3-5, and only diagram is shown in Fig. 1.Actuator 14 is controlled by vavuum pump 15, so as in engine Warm-up period during (so when the cooling of gas need not be discharged) open by-pass conduit 65.In the module according to the present invention In, known solution is different from, does not provide any vacuum tank so as to operated actuator 14.Due to this feature, the weight of module Amount and overall dimension been considerably reduce.Specifically, the known solution party being located at compared to the vacuum tank beside heat exchanger Case, have the advantage that the end face of heat exchanger body 2 installed therein can be by exchanging heat according to the multifunction module of the present invention Device fully takes up.The fact has allowed to obtain the more effective cooling of discharge gas using larger heat exchanger, but does not increase mould The overall dimension of block.Or, it is also possible to using with the heat exchange similar to the overall dimension provided in known solution Device, so been considerably reducing the overall dimension of module.
Below, it will be described in the path of the discharge gas in the preferred embodiment according to the module of the present invention.
Referring in particular to Fig. 4 and 7, discharge gas conduit 6 includes blind conduit portion 60, and it is from being centrally located structural detail 2 Attachment face on the entrance opening 9 extend through central structural element body 2.Go out another from the bifurcated of conduit portion 60 to lead Tube portion 61, its direction along the longitudinal direction parallel to body 2 are extended up into the end in the opening 23 on the P3 of end face, EGR valve unit 3 is arranged on the P3 of end face.Conduit portion 62 is disposed adjacent to opening 23, wherein conduit portion 61 and another Conduit portion 63 connects, and another conduit portion 63 extends parallel to conduit portion 61, and straight from the end face P3 extensions of body 2 The opposing end surface P2 mounted thereto to heat exchanger 4, flow into the opening 12 connected with the discharge gas access in heat exchanger 4.
The connection of conduit portion 61 and conduit portion 62 (Fig. 4) is controlled by EGR valve unit, and EGR valve unit is included by screw (not shown) is rigidly connected to the body of the body of element 2, and the electricity including being controlled for lock (shutter) O position Actuator, lock O cooperate with forming the valve seat on the wall of conduit portion 61 (not shown in accompanying drawing).Lock O can be in conduit portion The countershaft for the position being spaced apart with valve seat that the resting position on valve seat that connection between 61,62 is interrupted is opened with above-mentioned connection Moved to ground.
Referring again to Fig. 4 and 8, the end face of central structural element body 2 is fully taken up by heat exchanger 4.Such heat exchanger 4 with Following manner is constructed, and U-shaped path is followed to be passed through its discharge gas.Due to this feature, thus it is gas-cooled etc. discharging With under efficiency, it can been considerably reduce the overall dimension of the heat exchanger on the longitudinal direction of module.
U-shaped path for the discharge gas through heat exchanger 4 (is shown in the accompanying drawings in this case by the first comb 41 Go out) or alternately limited by the flat passage for flow of exhaust in the first direction, by the second comb 41 or alternately By for being limited along the flat passage of flow of exhaust of the second direction opposite with first direction, and by by the pipe of first row or The medial compartment 44 of pipe or flat passage that flat passage is connected to second row limits.
In the preferred embodiment for the heat exchanger 4 being shown here at, the pipe of second row or flat passage (are positioned under first row Trip) the small overall passage section of the total cross section of the path limited than the pipe by first row or flat passage is limited as follows, so as to The reduction of gas velocity is discharged caused by offsetting by reducing due to cooling and density.In the shown example of acquisition, there is provided institute Having all has the pipe 41 of same cross-sectional, but the quantity for providing the pipe of upstream first row is more than the quantity of the pipe of downstream second row.
The pipe 41 of heat exchanger is all to be wrapped by the room 43 of filling cooling agent.
The discharge gas for leaving heat exchanger is again introduced into the body of element 2, in by-pass conduit 65 (Fig. 1 and 7) with And merge in the exit opening 10 for being connected to intake line 5, flowed above the metal body of element 2 on P4.For pipe The co-operating member of the connection of line 21 is arranged at exit opening 10, wherein the pipeline 21 makes recycling discharge gas in suction line Flowed in road 5.
Below, the path of the cooling agent in the preferred embodiment according to the module of the present invention will be described in more detail.
Reference picture 2,5 and 6, coolant conduit 7 include conduit portion 71, and it is described in be positioned on the attachment face P6 Entrance opening 8 extends through opposite face P1 of the body up to central structural element 2 of central structural element 2, wherein the conduit Part 71 is terminated in exit opening 11.Co-operating member 18 is arranged at opening 11, and the co-operating member 18 is incorporated in Fig. 2 Thermostatic valve 19 (not shown in Fig. 5) shown in middle diagram, it controls supply of the cooling agent to the radiator of cooling system.
End face P3 of another conduit portion 72 along the central structural element 2 associated there of EGR valve unit 3 direction from The bifurcated of conduit portion 71, and flowed for being adjacent in the room 73 of the end face P3 for the cooling of EGR valve unit 3.It is another Individual conduit portion 74 is longitudinally extended entering up to the cooling agent in heat exchanger 4 along the central structural element 2 since room 73 Mouth 22.Through entrance 22, cooling agent enters in the room 43 (Fig. 8) of heat exchanger 4, wherein being cooled in the discharge gas circulated in pipe 41 Body.The outlet accessory 42 (Fig. 6) that cooling agent is connected by the cooler with engine oil leaves heat exchanger, and outlet accessory 42 is hair The part of motivation cooling system.Go out another conduit (not shown) from conduit portion 74 (Fig. 5) bifurcated, it terminates at body 2 In the P1 of face, wherein securing the co-operating member 22 being connected with the cabin heater of motor vehicles.
Below, the operation according to module 1 of the invention will be described.
In the figure of accompanying drawing, arrow F1 and F2 indicate respectively flow of exhaust and coolant flow.
During engine E operation, a part for flow of exhaust is recycled to engine charge by means of module 1 Mouthful.Specifically, a part for flow of exhaust is through the inlet manifold in cylinder cap T conduit 24 (Fig. 1), to enter in mould In entrance opening 9 in block 1.If EGR valve is opened, the flow of exhaust entered in opening 9 is dynamic through continuous conduit Part 60-63 (Fig. 4 and 6), until entering in the entrance of heat exchanger 4.Then, gas is along a direction and then along phase negative side To two combs (or flat passage) 41 for flowing through heat exchanger 4, until slave module 1 is flowed out by opening 10, and therefore flow into In intake line 5 (Fig. 1).
The electrical actuator control handle O of EGR valve unit 3, for adjusting the flow of exhaust of recycling.The actuator of EGR valve Controlled by control unit of engine based on one or more engine operation parameters according to known technology.
The handle seat O for being flowed through EGR valve before being cooled down in heat exchanger 4 due to discharge gas (is only existed by room 73 Cooling agent caused by reduction cooling), therefore gas still relative thermal at handle O, so therefore the risk of Carbon deposition reduces or complete It totally disappeared and remove, the risk can damage the efficiency of EGR valve now.
During the warm-up period of engine, when the cooling for not needing the discharge gas in heat exchanger 4, actuator 14 is controlled The unlatching of by-passing valve 13 processed, so that gas slave module 1 flows out, and is not passed through heat exchanger 4.Actuator 14 is by means of electronic valve 16 Open and touch vavuum pump 15 (part of its module 1 not being integrated in engine E) and be changed into operability.Therefore, class Prior art is similar to, module 1 does not include being used for the vacuum tank for supplying actuator 14, as a result may use bigger and more effectively change Hot device, it occupies the whole end face P2 of metal body 2, the overall dimension without increasing module 1.With the discharge in heat exchanger 4 The constitution realization of the U-shaped in the path of gas reduces the size of the heat exchanger 4 on the longitudinal direction of body 2.Connect with medial compartment 44 The different pipe 41 of two logical rows or pre-setting for flat passage also achieve offer along the path reduction for discharging gas for arranging Go out the general path section of gas, reduce and the reduction of caused speed to offset the density caused by by cooling.
Reference picture 1 and 5,6, the cooling agent of the cooling jacket J from cylinder cap are flowed into the entrance opening 8 of module 1.The portion of stream Divide through conduit portion 71, and cause when thermostatic valve 19 (Fig. 1) is opened and module 1 is left by co-operating member 18, so as to court The radiator flowing of motor vehicles.The part of coolant flow subsequently flows through conduit portion 71,72, (it cools down EGR for room 73 Valve) and conduit portion 74, until in the room 43 of inflow heat exchanger, wherein cooling discharge gas.Leave the cooling agent of heat exchanger 44 Slave module 1 is gone out through co-operating member 42 (Fig. 6), and from co-operating member 42, it is guided to the engine of motor vehicles cooling system The cooler of oil.The part of cooling agent is changed to slave module 1 and gone out through co-operating member 22, and it is guided to cabin from co-operating member 22 adds Hot device.
As a result, from the above description it will be evident that being combined with according to the multifunction module of the present invention for finite population size Feature, low weight and constant efficiency in certain time are come the simple structure and economic process that manufacture.
Naturally, although the principle of the present invention keeps identical, the details of construction and embodiment can be on purely via reality Example description and the content shown vary widely, without departing from the scope of the present invention.

Claims (8)

1. the multifunction module (1) of the internal combustion engine (E) for motor vehicles, it is incorporated to the discharge gas recirculation system of engine A part and the engine cooling circuit a part, specifically, the module includes being used for adjusting described to be followed again The EGR valve unit (3) of ring flow of exhaust and for by means of the engine coolant cooling it is described recycling discharge gas Heat exchanger (4), further wherein：
The multifunction module includes central structural element (2), and wherein metal body, which has, is used to attach to the engine (E) The cylinder cap (T) end face face (P6), such body has according to installation shape in the module on the engine In state perpendicular to the cylinder cap longitudinal direction direction elongated shape,
Conduit (7) formation of circulation for the conduit (6) of the circulation of the discharge gas and for the engine coolant In the metal body of the central structural element (2), entrance opening of the conduit (6,7) from the discharge gas (9) and the entrance opening (8) of the cooling agent starts to extend, and the entrance opening (8,9) is positioned on the attachment face (P6), And it is respectively used to connect with the enmgine exhaust and with the cooling agent chuck of the cylinder cap,
The discharge gas conduit (6) is terminated to the discharge gas vent opening for being intended to connect with the motor intake manifold (10) in, but the coolant conduit (7) is terminated at least one coolant outlet opening (11) of association thermostatic valve (19) In, for controlling to the connection of the radiator of the engine-cooling system,
The EGR valve unit (3) of flow of exhaust for adjusting the recycling is arranged on the central structural element (2) The elongate body first end face (P3) on, and along it is described discharge gas conduit (6) operatively plant,
For being arranged on the central structural element (2) by the heat exchanger (4) of the cooling agent cooling discharge gas The elongate body second end face (P2) on, the second end face (P2) and the EGR valve unit (3) are mounted thereto Relatively, the heat exchanger (4) has and the inner conduit (41,43) each other in heat exchanging relation, its point the first end face (P3) Do not planted operatively along the discharge gas conduit (6) and the coolant conduit (7),
By-pass conduit (65) for the discharge gas is formed in the elongate body of central structural element (2), described Discharge gas can flow through the by-pass conduit (65) towards the discharge gas vent opening (10), and be not passed through the heat exchange Device (4),
By-passing valve (13) is plugged in the by-pass conduit (65), and it is by means of the vacuum that is carried by the multifunction module (1) Actuator (14) operates,
The multifunction module (1) is characterised by that the EGR valve unit (3) is as follows on the heat exchanger (4) upstream edge The discharge gas conduit (6) operatively positions so that when the EGR valve unit (3) is in opening, the discharge Gas is in the heat exchanger (4) that cooling passes through the EGR valve unit (3) before, and
The vacuum actuator (14) of the by-passing valve (13) is controlled to arrange for being grasped by the vacuum source of the module (1) outside Make, thus the module removes any vacuum source or tank from.
2. multifunction module (1) according to claim 1, it is characterised in that described of the central structural element (2) The second end face (P2) of body is fully taken up by the heat exchanger (4).
3. multifunction module (1) according to claim 1, it is characterised in that the heat exchanger is configured to as follows So that the discharge gas through the heat exchanger follows U-shaped path.
4. multifunction module (1) according to claim 3, it is characterised in that through the heat exchanger (4) for described The U-shaped path for discharging gas is limited by the first comb for the flow of exhaust in the first direction or flat passage (41) It is fixed, by the second comb for the flow of exhaust along second direction opposite to the first direction or flat passage (41) Limit, and limited by the medial compartment (44) of pipe or flat passage that the pipe of the first row or flat passage are connected to the second row It is fixed.
5. multifunction module (1) according to claim 4, it is characterised in that the pipe of the second row or flat passage (41) The totality limited as follows less than the general path area of section limited by the pipe or flat passage (41) of the first row is led to Road area of section, so that the speed offset as the discharge gas caused by reducing due to cooling and density reduces.
6. multifunction module (1) according to claim 1, it is characterised in that the cooling duct (7) includes：
First conduit portion (71), it extends through described from the entrance opening (8) being positioned at from the attachment face (P6) Central structural element body (2) associates the institute of the thermostatic valve (19) until the opposite face (P1) of the central structural element (2) Exit opening (11) is stated to be positioned in；
Second conduit portion (71), it is associated with it described from first conduit portion (71) along the EGR valve unit (3) The direction bifurcated of the first end face (P3) of central structural element (2), and terminate at for cooling down the EGR valve unit (3) in the room (73) of the first end face (P3) for being adjacent to the central structural element (2), and
3rd conduit portion (74), it is longitudinally extended up to institute along the central structural element (2) since the room (73) The entrance (22) of the cooling agent in heat exchanger (4) is stated,
The heat exchanger (4) has the outer member being intended to the engine cooling circuit, such as the engine oil for as described in The outlet (42) for the cooling agent of cooler connection.
7. multifunction module according to claim 1, it is characterised in that the discharge gas conduit (6) includes：
For the conduit portion (60,61) of the discharge gas, it is operatively positioned at EGR valve unit (3) upstream, and And opened from the entrance for being used for the discharge gas being positioned on the attachment face (P6) of the central structural element (2) Mouth (9) extends through the body of the central structural element (2) until the first end of the central structural element (2) Face (P3),
For the conduit portion (62,63) of the discharge gas, it is operatively positioned at EGR valve unit (3) downstream, and And the body of the central structural element (2) is extended through until the second end face of the central structural element (2) (P2), wherein, it, which is merged into the heat exchanger (4), is used in the entrance of the discharge gas, the discharge gas conduit (6) connection between the upstream portion and the downstream part is controlled by the EGR valve unit (3),
The terminal conduit section for being used for the discharge gas formed in the body of the central structural element (2), its Make the institute of the outlet of the discharge gas from the heat exchanger (4) and the discharge gas of the multifunction module (1) Exit opening (10) connection is stated,
The by-pass conduit (65) limited by the conduit formed in the body of the central structural element (2), it makes institute The conduit portion (62,63) for being used for the discharge gas in EGR valve unit (3) downstream is stated with being used for the discharge gas The terminal conduit section is directly connected.
8. multifunction module (1) according to claim 7, it is characterised in that be operatively positioned at the EGR valve unit (3) conduit portion (60,61) for being used for the discharge gas of upstream is terminated to the described of the central structural element (2) In opening (23) in the first end face (P3) of body, and the EGR valve unit (3) includes valve lock (8), its provide into It can be moved in the opening (23) of the first end face (P3), and with forming the valve in the central structural element Seat cooperation, it is used for for controlling between the upstream portion and the downstream part of the conduit (6) for discharging gas Connection.
CN201710242138.6A 2016-04-14 2017-04-13 Multifunctional module for an internal combustion engine of a motor vehicle Active CN107448330B (en)

Applications Claiming Priority (2)

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EP16165369.6 2016-04-14
EP16165369.6A EP3232043B1 (en) 2016-04-14 2016-04-14 Multi-functional module for an internal combustion engine of a motor-vehicle

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CN107448330B CN107448330B (en) 2020-05-05

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JP2021143655A (en) * 2020-03-13 2021-09-24 ヤンマーパワーテクノロジー株式会社 engine
CN112096543B (en) * 2020-08-13 2021-12-07 东风汽车集团有限公司 EGR system and car

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CN104373250A (en) * 2013-08-12 2015-02-25 现代自动车株式会社 Cooling apparatus and cooling control method for egr gas and engine oil

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FR2894295B1 (en) * 2005-12-01 2010-04-30 Mark Iv Systemes Moteurs Sa MULTIFUNCTIONAL MODULE FOR INTERNAL COMBUSTION ENGINE
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US20040107949A1 (en) * 2002-01-16 2004-06-10 Sotsuo Miyoshi Exhaust gas recirculating device
CN101072976A (en) * 2004-10-07 2007-11-14 贝洱两合公司 Air-cooled exhaust gas heat exchanger, in particular exhaust gas cooler for motor vehicles
DE102007049336A1 (en) * 2007-10-12 2009-04-16 Behr Gmbh & Co. Kg Multifunctional module for attachment to an internal combustion engine and for guiding fluids, in particular in the form of charging fluid and / or coolant, arrangement with the module and internal combustion engine
CN201714509U (en) * 2009-01-06 2011-01-19 福特环球技术公司 Explosive motor integrated cover-exhaust recirculation cooler and explosive motor
CN104373250A (en) * 2013-08-12 2015-02-25 现代自动车株式会社 Cooling apparatus and cooling control method for egr gas and engine oil

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EP3232043A1 (en) 2017-10-18
CN107448330B (en) 2020-05-05
BR102017006089A2 (en) 2017-10-17
EP3232043B1 (en) 2018-06-06
BR102017006089B1 (en) 2022-11-22

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