GB2580046A - A valve support for hydraulic electronic control unit braking system and braking system using said valve support - Google Patents

A valve support for hydraulic electronic control unit braking system and braking system using said valve support Download PDF

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Publication number
GB2580046A
GB2580046A GB1820777.9A GB201820777A GB2580046A GB 2580046 A GB2580046 A GB 2580046A GB 201820777 A GB201820777 A GB 201820777A GB 2580046 A GB2580046 A GB 2580046A
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GB
United Kingdom
Prior art keywords
valve support
bore
braking system
rib
base
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
GB1820777.9A
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GB2580046B (en
GB201820777D0 (en
Inventor
Catalin Lia Radu
Ratoi Andrei
Andrei Vadeanu Victor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Continental Automotive Romania SRL
Original Assignee
Continental Teves AG and Co OHG
Continental Automotive Romania SRL
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Continental Teves AG and Co OHG, Continental Automotive Romania SRL filed Critical Continental Teves AG and Co OHG
Priority to GB1820777.9A priority Critical patent/GB2580046B/en
Publication of GB201820777D0 publication Critical patent/GB201820777D0/en
Publication of GB2580046A publication Critical patent/GB2580046A/en
Application granted granted Critical
Publication of GB2580046B publication Critical patent/GB2580046B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/343—Systems characterised by their lay-out
    • B60T8/344—Hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • B60T8/3685—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders characterised by the mounting of the modulator unit onto the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F15B13/0814—Monoblock manifolds

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulating Braking Force (AREA)

Abstract

A valve support (hydraulic valve block) comprising a through bore 7 to accommodate a linear actuator (a piston) in its entirety, a bore 13 for a pedal feel simulator (PFS) and four bores 12 for output ports. The block is for a hydraulic electronic control unit (HECU) braking system and through bore 7 is included longitudinally to allow the motor shaft (3.1, fig 3b) to be parallel to the ECU (4, fig. 3b). The PFS bore 13 is parallel to the LAC bore 7 but below it in use. The output ports 12 are equally spaced apart and perpendicular to the LAC bore 7 but below it to allow more space for output port connection relative to a firewall in both right hand and left hand drive vehicles (see figure 6). The support is also suitable for holding a tandem master cylinder TMC (14, fig. 3). The block may comprise two cuboid sections: a base 6.1, and a rib 6.2, with the same length in the longitudinal direction, but the rib having a smaller cross sectional area than the base, e.g. together forming a t-shaped cross section. The rib may include a triangular flange 8 at one end.

Description

Description
A valve support for Hydraulic Electronic Control Unit braking system and braking system using said valve support
Field of the invention
[0001] The invention relates to a hydraulic electronic control unit (hereafter HECU) for electronic braking control systems and, 10 in particular, to anew configuration of a valve support for said hydraulic control unit braking system.
Prior art
[0002] Within the automotive braking industry, HECU is provided in order to ensure the control of the hydraulic pressure of the fluid from the braking system to the wheel, the first one including main component parts such as: a reservoir, valves and valve support, an electric motor with hollow shaft, ball screw drive (BED) and with hydraulic piston.
[0003] The mechanical architecture of the braking system according to prior art is presented in Fig. 1, comprising the following components: a brake fluid reservoir, a valve support, an electric motor and a BED, an electronic control unit (ECU), a piston and its corresponding piston housing. Other components are not presented here, as not being concerned by the invention (other valves, brake pipes).
[0004] The electric motor is used to generate hydraulic pressure inside the system, which TS necessary for controlling the brake process, so that to ensure the proper function of the braking system. The transforming of the rotation movement of the motor shaft into linear movement of the piston is made by means of BED. The valves (not represented graphically) are used to regulate the pressure of the brake fluid, so as to ensure the control of the braking process.
[0005] The system consisting of the BED assembly, the piston and piston housing is called a linear actuator assembly (LAC). The piston is not visible because it is placed inside the piston 5 housing.
[0006] The valve support is the mechanical component that fulfils main roles such as: Accommodates the valves of the braking system; Provides the hydraulic connections in between all assembly 10 components; Mechanically fixes the components.
[0007] In the state of the art (Fig. 1 (a), (b), Fig. 2), the electric motor is placed on one side, the LAC is placed through the valve support and through the ECU, out of which the piston housing protrudes at the opposite end of the assembly, as seen in Fig. 1 (b). As the electric motor is placed on one side of the valve support and the ECU is placed on the opposite side, other subassemblies must also be placed through the valve support in order to ensure the communication between the motor and the ECU.
[0008] In Fig. 1 (b) it can be seen that the electric motor 3 has a hollow shaft 3.1., which transfers the movement/torque to a BSD 3.2 as an individual part transversely passing through the valve support. The motor shaft is continued with the piston housing transversely passing through the ECU, placed on the opposite side of the motor. The motor shaft 3.1 is perpendicular to the valve support 2.
[0009] As shown in Fig. 1(a), in the current mechanical architecture, a PEE (pedal feel simulator) is used to reproduce the natural felling of actuating the breaking pedal, is situated outside of the valve support, on the same side of the valve support with the electrical motor and under it.
[0010] In Fig. 2 are shown four output ports situated on the same side of the valve support with the electrical motor, precisely on lateral side of it, that is the plane of the output ports is perpendicular and adjacent to the plane of a firewall, said firewall plane being the one that separates the engine compartment from the passenger compartment. The ports have the role to connect HECU with various other components (not represented) associated with the wheels through pipe lines inserted into said ports.
[0011] A tandem master cylinder (TMC) is located on the same side with the firewall.
Disadvantages of the prior art
[0012] The main problem of the prior art is the placement of the output ports on a lateral face of the assembly when seen from outside the vehicle looking to the front of the vehicle. As seen in Fig. 6 (a), for the left-hand side drive vehicle, such placement may be adequate because the output ports are towards the middle axis of the vehicle, where there is space for easy access other components, such as the pipelines.
[0013] The problem is when the architecture is changed from left hand side driving to right hand side driving. In this situation, as seen in Fig. 6 (a) the outpu.T ports are positioned very close to the inside of the fender making it very difficult to connect the pipe lines into the output ports.
[0014] Yet another important disadvantage of the prior art is related to package size issues, considering that is not a compact product, because the piston housing projects out of the ECU and because its size can restrict the placement of the control unit within the vehicle.
Problems to be solved by the invention [0015] The problem resolved by present invention is to provide a valve support for HECU braking system of simplified configuration, having the output ports repositioned, in order to facilitate easy access to the output ports in both types of driving position, left hand side drive vehicle and right hand side drive vehicle.
SUMMARY F THE INVENTION
----------- --------..... ------------------- [0016]The first objective of the invention is to provide a valve support for hydraulic electronic control unit (HECU) braking system for holding various components of the braking system placed in the motor compartment separated by the passenger department by a firewall and enabling connections between them, said components including a motor having a hollow motor shaft used to generate hydraulic pressure inside the HECU braking system, a linear actuator comprising an assembly consisting of a piston and its corresponding piston housing, a ball screw drive (BED), an electronic control unit ECU, a Tandem Master Cylinder (TMC), the valve support comprising a through bore, four bores for output ports, a bore for a Pedal Feel Simulator (PFS). According to the invention, in order to provide easier access to the output ports in both driving positions in respect to the 20 position of the firewall of the vehicle and the position of the TMC, the valve support has the following characteristics: - said through bore is positioned longitudinally within the valve support, so as to allow a parallel arrangement of the motor shaft in respect to the electronic control unit ECU; said through bore is configured in such away to accommodate the linear actuator assembly LAC in its entirety; - the bores for the output ports are positioned inside the valve support, opposite to the firewall and the TMC side, being equally spaced and placed in a horizontal plane situated below the said through bore, having their axis perpendicular on the axis of the said through bore; the bore for PEE, in order to accommodate inside it the PFS in its entirety, is positioned longitudinally within the valve support, having its axis parallel with the axis of the longitudinal through bore and situated in a parallel horizontal plane below the plane of the longitudinal through bore.
[0017] The invention further provides a braking system using said 5 valve support.
The advantages of the invention [0018] The main advantages of this invention are the following: Provides much easier access to the output ports in both types 10 of driving position, especially when it comes to right-hand driving position vehicles; Has shorter hydraulic connection from the piston housing to the valve support and reservoir; Increases system reliability due to the reduced number of 15 components.
Reduces the product final weight by integrating the piston housing bore within the valve support and provides an optimized package of the entire product; [0019] Further features and advantages of the invention stems from 20 the following description and the claims with reference to the accompanying drawings where like reference characters designate the same component throughout the figures.
Brief description of the drawings
[0020] The invention will be hereafter described with reference to the drawings where: Fig. 1 illustrates a RECU braking system from the state of the art, where Fig. 1 (a) is the representation in perspective; Fig. 1 (b) is the schematic view; and Fig. 1 (c) is a perspective 30 view showing the output ports.
Fig. 2 illustrates a perspective view showing the output ports of a HECU braking system from the state of the art; Fig. 3 shows a schematic view with placement of the valve support and piston housing in the HECU braking system from the prior art -Fig. 3 (a), compared. to HECU braking system according to the invention -Fig. 3 (b); Fig. 4 illustrates in perspective view the raw piece of material to be machined in order to obtain the valve support according to the invention; Fig. 5 illustrates in perspective view, the valve support according to the invention, with a view from firewall side (Fig. 5 a) and a view from the output ports side (Fig. 5 b).
Fig. 6 (a) shows the HECU positioning for right-hand drive vehicle and left-hand drive vehicle from the prior art, whereas Fig. 6 (b) shows the valve support according to invention for the right hand driving vehicle and for the left hand driving vehicle.
[0021] List of references in the drawings: 1 -Fluid reservoir 2 -Valve support 3 -Electric motor 3.1-hollow motor shaft -(dotted line) 3.2-BSD -Ball Screw Drive placed inside the electric motor (continuous line) 4 -ECU -Electronic Control Unit -Piston housing (containing the piston inside) 25 6.1-base of the valve support 2 6.2-rib of the valve support 2 7 -Through longitudinal bore 8 -Flange 9 -Bulk cuboid portion of the rib 6.2 10 -Vertical bore for braking fluid admission 11 -Firewall side of the valve support 2 12 -Output ports 13-2F3 -Pedal Feel Simulator 14-TMC -Tandem Master Cylinder [0022] The drawings show the valve support and braking system according to the invention in working position (except for Fig. 3. a), therefore all references to vertical / horizontal and up / down in the description, claims and drawings do correspond to the common understanding of these terms, as seen in the drawings.
Detailed description
[0023] The present invention provides a new arrangement of some 10 of the components of the hydraulic electronic control unit, the valve support 2, the linear actuator assembly LAC, the four output ports 12, the bore for pedal feel simulator (FE'S) 13 by means of a new valve support which configuration is specifically designed to provide an easier access to the four output ports 12 and a 15 simplified configuration.
[0024] The inventors conceived the integration within the valve support 2 of the entire LAC inside the through bore 7. The LAC includes the piston (not visible) and its corresponding piston housing 5 to be connected to the motor 3, and the ball screw drive BSD 3.2.
[0025] The through bore 7 of the valve support 2 is designed to accommodate the entire LAC, in contrast with prior art where not all the components of LAC are accommodated by the valve support 2, and where said components pass through the ECU 4 and the piston housing 5 protrudes out of the LAC.
[0026] In order to accommodate the entire LAC, according to the invention, the bore 7 is positioned longitudinally within the valve support 2, instead of being transversal as in prior art, thus it allowing a parallel arrangement of the motor shaft 3.1 in respect to the ECU 4.
[0027] The motor shaft 3.1 is no longer perpendicular, but it is parallel to the valve support 2, as seen in Fig. 3 (b) [0028] Further on, the invention provides a repositioning of the output ports 12 situated on the valve support 2.
[0029] According to the invention, as shown in the Fig. 3, the four bores for the output ports 12 are positioned inside the valve support 2, opposite to the firewall 11 and the TMC 14 and not on a lateral face of the assembly and perpendicular on the firewall 11 as in the state of art. The bores for the output ports 12 are equally spaced on the valve support side and opposite to the fire wall llside and placed in a horizontal plan situated below the bore 7 and having their axis perpendicular on the axis of the bore 7.
[0030] As shown in fig. 6 (b), the said positioning of the output ports 12 provides for the same space and same easy access to the output ports 12 both for left hand side drive vehicle and for right hand side drive vehicle.
[0031] The invention also provides, as shown in Fig. 3b, the integration inside the valve support 2 of the bore for the PTS 13, comparative with the prior art where the PFS is situated above the valve support 2 and eccentric of it. To this end, the bore for the PE'S 13 is positioned longitudinally within The valve support 2 and has its axis parallel with the axis of the longitudinal bore 7. The bore for the PFS 13 is situated below the bore 7, in a parallel plane.
[0032] The valve support 2 has an adapted shape, having an increased width compared to the valve support from the prior art, so as to accommodate the longitudinal through bore 7 for the LAC. [0033] In one preferred embodiment in order to accommodate the entire LAC, said valve support 2 has the geometry consisting of two substantially cuboid pieces forming a single body, namely a base 6.1 and a rib 6.2 placed on top of the base 6.1, where the transversal area of the rib 6.2 is smaller than the transversal area of the base 6.1, and the base 6.1 and the rib 6.2 have the same length along a longitudinal horizontal symmetry axis y-y. [0034] The rib 6.2 has a middle portion, recessed and narrowed to match the longitudinal bore 7 as seen in Fig 5.
[0035] The position of the rib 6.2 on top of the base 6.1 can move along the transversal line r-r as shown in Fig. 4, provided that the relative position of the four bores for the output ports 12 in respect to the firewall 11 and the TMC 14 is respected and provided that all the other components of the braking system and connections thereof can be easily placed and respectively connected.
[0036] In another preferred embodiment, as shown in Fig. 4 and Fig. 5, said valve support 2 has the geometry of a reversed T-shape in transversal section, consisting of two substantially rectangular parallelepiped pieces forming a single body, a base 6.1 and a rib 6.2 of smaller size than the base 6.1.
[0037] The geometry of the valve support 2 according to this preferred embodiment, consists of an elevated portion -the rib 6.2 with rectangular profile in cross-section, positioned along the median line in a longitudinal direction above the base 6.1 of the valve support 2. The rib 6.2 accommodates along its longitudinal direction the upper part of the through longitudinal bore 7. The lower part of the longitudinal bore 7 is accommodated by the upper part of the base 6.1.
[0038] According to another preferred embodiment, the shape of the rib 6.2 comprises a triangular flange 8 at one end of the valve support 2, a cuboid bulk portion 9 at the opposite end, and a middle portion recessed and narrowed to match the longitudinal bore 7, enabling a better mechanical resistance. The bulk cuboid portion 9 also has a vertical bore 10 for brake fluid admission, near and perpendicular to the through longitudinal bore 7. The triangular flange 8 has the purpose to mechanically fix the motor 3.
[0039] In another preferred embodiment, in order to obtain a valve support with best mechanical characteristics, the raw piece of material shown in the Fig. 4 is extruded. The extrusion is done from the direction indicated by the arrow in order to obtain the shape of the valve support 2 according to the invention, necessary to ensure the integration of the piston housing 5 within the bore 7 of the valve support 2.
[0040] Using this particular concept of extrusion, the packaging machining necessary to obtain the final valve support 2 shown in Fig. 5 is well optimized in order to reduce the material waste, and also to reduce the machining process cycle time. For example, the process maybe done using standard big diameter milling tools, preferably of 080mm.
[0041] In order to reduce the weight of the assembly, in another preferred embodiment, the raw material used to manufacture the valve support (2) is aluminium.
[0042] The valve support 2 according to the invention may be included in any HECU braking system, by this conferring it enhanced characteristics in terms of size, weight, complexity and easy access to the output ports 12 irrespective of the driving position.
[0043] The new architecture of the braking system according to the present invention results from the new arrangement of the valve support 2 according to the invention and the new placement of the output ports 12. The teaching of present invention provides a different positioning of the ECU 4, rotated counter-clockwise with 90' compared to the arrangement from the prior art, the valve support 2 according to the invention being completely reconfigured and placed horizontally as seen in Fig. 3 (b), Fig. 5 (a), (b). In the new architecture the ECU 4 is placed below the valve support 2. The fact that the valve support 2 totally includes the piston and provides the housing for it simplifies the assembly, as it is no longer necessary to provide a separate piece for the piston housing. The fact that the electric motor 3 and ECU 4 are no longer placed on one and the other part of the valve support 2 generates no additional subassemblies placed
II
through the valve support 2 in order to ensure the communication between the motor and the ECU.
[0044] Further on, the fact that the bores for the output ports are positioned inside the valve support and opposite from the 5 firewall 11 and the TMC 14 side provides easier access to the output ports 12 and ensures that the same valve support 2 can be used for braking systems used for left side driving vehicles and for right side driving vehicles without any difficulties when accessing said output ports 12 for the situation of the right side 10 driving vehicles.
[0045] Further on, as in the braking system according to the invention, the bore for the PFS 13 has the axis common with the axis of the valve support 12 instead of being perpendicular on it and since said PE'S is integrated in the valve support 2 instead of being placed above and eccentric of it, this leads to a more compact braking system. This is always an advantage when it comes to motor and vehicle components placed inside all kind of compartments, as usually space constraints apply.
[0046] The first valve support manufactured according to the invention showed a minimum 5 % weight reduction of the assembly valve support/piston housing compared with the state of the art. When the valve support is made of aluminium, the reduction can be significantly higher.
[0047] Therefore the new architecture of the valve support and correspondingly of the braking system is not a mere change of the direction of the LAC, but involves complex relationship between new configurations such as the fact that the piston housing is eliminated as the valve support 2 provides inside it housing for the piston, new arrangement of known components, such as the change of position of the LAC and the change of position of the output ports and new adapted shape of the valve support 2.
[0048] The preferred embodiments have been showed and described for the purposes of illustrating the structural and functional principles of the present invention, as well as illustrating the methods of employing the preferred embodiments and are subject to change without departing from such principles. Therefore, this invention includes all modifications encompassed within the spirit of the following claims.

Claims (7)

  1. Patent claims 1. A valve support (2) for hydraulic electronic control unit (HECU) braking system for holding various components of the 5 braking system placed in the motor compartment separated by the passenger department by a firewall (11) and enabling connections between them, said components including a motor (3) having a hollow motor shaft (3.1.) used to generate hydraulic pressure inside the HECU braking system, a linear actuator (LAC) 10 comprising an assembly consisting of a piston and its corresponding piston housing (5), a ball screw drive (BED) (3.2), an electronic control unit ECU (4), a TandemMaster Cylinder (TMC) (14), the valve support (2) comprising a through bore (7), four bores for output ports (12), a bore for a Pedal Feel Simulator (PE'S) (13) characterized in that, in order to provide easier access to the output ports (12) in both driving positions in respect to the position of the firewall (11) and the position of the TMC (14): said through bore (7) is positioned longitudinally within 20 the valve support (2), so as to allow a parallel arrangement of the motor shaft (3.1) in respect to the electronic control unit ECU (4); said through bore (7) is configured in such a way to accommodate the linear actuator assembly LAC in its entirety; the bores for the output ports (12) are positioned inside the valve support (2), opposite to the firewall (11) and the TMC (14) side, being equally spaced and placed in a horizontal plan situated below the bore (7), having their axis perpendicular on the axis of the bore (7); - the bore for the PFS (13), in order to accommodate inside it the PEE in its entirely, is positioned longitudinally within the valve support (2) having its axis parallel with the axis of the longitudinal bore (7) and situated in a parallel horizontal plane below the plane of the bore (7).
  2. 2. The valve support according to claim. 1 characterized in that said valve support (2) has the geometry consisting of two substantially cuboid pieces forming a single body, namely a base (6.1) and a rib (6.2) placed on top of the base (6.1), where the transversal area of the rib (6.2) is smaller than the transversal area of the base (6.1), the base (6.1) and the rib (6.2) have the same length along a longitudinal horizontal symmetry axis (y-y), and the position of the rib (6.2) on top of the base (6.1) can move along a transversal line (r-r).
  3. 3. The valve support according to claim. 2 characterized in that said valve support (2) has the geometry of a reversed T-shape in transversal section, consisting of two substantially rectangular parallelepiped pieces forming a single body, a base (6.1) and a rib (6.2) of smaller size than the base (6.1).
  4. 4. The valve support according to claim 2 or 3 characterized 20 in that the shape of the rib (6.2) comprises a triangular flange (8) at one end of the valve support (2), a cuboid bulk portion (9) at the opposite end, and a middle portion recessed and narrowed to match the longitudinal bore (7).
  5. 5. The valve support according to any of the preceding claims, characterized in that is produced by extrusion method using standard big diameter milling tools, preferably of 080mm.
  6. 6. The valve support according to any of the preceding claims, characterized in that it is made of aluminium.
  7. 7. A braking system using the valve support according to any of the preceding claims.
GB1820777.9A 2018-12-20 2018-12-20 A valve support for hydraulic electronic control unit braking system and braking system using said valve support Active GB2580046B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067894A1 (en) * 2003-09-26 2005-03-31 Shigemitsu Nohira Actuator for controlling brake hydraulic pressure and device and method for inspecting the same
DE102016222562A1 (en) * 2016-11-16 2018-05-17 Robert Bosch Gmbh Pedal path simulator and hydraulic block with a pedal travel simulator
KR20180111963A (en) * 2016-02-12 2018-10-11 로베르트 보쉬 게엠베하 Hydraulic blocks for automotive brake systems, and brake systems for automobiles
DE102017218301A1 (en) * 2017-10-13 2019-04-18 Continental Teves Ag & Co. Ohg Mountable on the bulkhead of a vehicle brake pressure transducer and method for its preparation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067894A1 (en) * 2003-09-26 2005-03-31 Shigemitsu Nohira Actuator for controlling brake hydraulic pressure and device and method for inspecting the same
KR20180111963A (en) * 2016-02-12 2018-10-11 로베르트 보쉬 게엠베하 Hydraulic blocks for automotive brake systems, and brake systems for automobiles
DE102016222562A1 (en) * 2016-11-16 2018-05-17 Robert Bosch Gmbh Pedal path simulator and hydraulic block with a pedal travel simulator
DE102017218301A1 (en) * 2017-10-13 2019-04-18 Continental Teves Ag & Co. Ohg Mountable on the bulkhead of a vehicle brake pressure transducer and method for its preparation

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GB201820777D0 (en) 2019-02-06

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