Discharge device and silencer system

Abstract

To provide an exhaust device, a silencer device, and a silencer system that overcome the shortcomings of known systems. [Solution] An exhaust device comprising a main body 10 having an exhaust inlet port 150 and an exhaust line 120 communicating with the exhaust inlet port 150, a silencer system 20 including a silencer device 210 for attenuating the exhaust flow FE, and a sealing washer 220, wherein the silencer device 210 has a base portion and a rim portion, the rim portion being adapted to divide the flow chamber 211 into first and second chamber ranges, the first chamber range having a first plurality of flow ports and defining a first flow path from the tip inlet portion 217 of the rim portion to the first plurality of flow ports, and the second chamber range having a second plurality of flow ports and defining a second flow path from the tip inlet portion 217 of the rim portion to the second plurality of flow ports.

Description

Technical Field

[0001] The present invention relates to an exhaust device for a pressure supply system in a vehicle, particularly a solenoid modulator ABS valve. Such an exhaust device includes a main body having an exhaust inlet port for receiving an exhaust flow and an exhaust line that communicates with the exhaust inlet port and is interrupted by an exhaust port for discharging the exhaust flow in the exhaust direction. The exhaust device further includes a silencer system arranged in the exhaust line for attenuating the exhaust flow, the silencer system including a silencer device that defines an exhaust chamber extending upstream in the exhaust direction and a sealing washer arranged adjacent to the silencer device. Furthermore, the present invention relates to a silencer system for an exhaust device of the above type and a silencer of such a silencer system.

Background Art

[0002] In the field of automotive engineering, particularly in systems including vehicle pressure supply and exhaust mechanisms, problems related to noise reduction and efficient air flow management are often faced. Known systems generally include, for example, an exhaust device such as a solenoid modulator ABS valve or similar components that play a role in discharging the exhaust flow while minimizing the noise generated during the process.

[0003] Existing exhaust devices often incorporate basic silencer systems that rely on simple configurations such as straight-through designs or basic chamber arrangements and may not be able to adequately address the complexities of air flow dynamics and noise suppression. The conventional approach may result in insufficient noise reduction or overly restricted air flow, affecting the overall efficiency of the vehicle's pressure supply system and leading to sub-optimal performance.

[0004] Other silencer systems employing sealing washers and silencer devices are known from Patent Document 1. The silencer device is positioned such that the space between the sealing washer and the exhaust cap forms an intermediate exhaust chamber before compressed air is discharged through the exhaust gap forming the exhaust port, and is defined by a fitted exhaust cap. While this silencer system can reduce the noise generated by the rapid discharge of air, there is still room for improvement in achieving the optimal balance between effective noise reduction and maintaining the necessary airflow efficiency. This is particularly important in the field of electric drive where internal combustion engines do not eliminate the noise generated from the exhaust process. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] International Publication No. 2024 / 110030 [Overview of the project] [Problems that the invention aims to solve]

[0006] Despite considerable progress in the field of exhaust devices for vehicle pressure supply systems, there remains a need for further improvements in noise reduction and airflow management. Therefore, the underlying technical problem of the present invention is to provide an exhaust device that overcomes, at least partially, the shortcomings of known systems.

[0007] The present invention has been made in view of this point, and the object of the present invention is to provide an exhaust device, a silencer system and a silencer device that overcome one or more drawbacks of known systems. [Means for solving the problem]

[0008] The present invention solves the above problem with a discharge device according to claim 1. In particular, with respect to the above-described type of discharge device, the present invention proposes that the silencer device has a slice-shaped base portion having a plurality of flow ports and a rim portion projecting from the base portion into a discharge chamber, wherein the rim portion is adapted to divide the flow chamber into at least a first chamber range and a second chamber range, the first chamber range having a first plurality of flow ports and defining a first flow path from the tip inlet of the rim portion to the first plurality of flow ports, and the second chamber range having a second plurality of flow ports and defining a second flow path from the tip inlet of the rim portion to the second plurality of flow ports. In particular, the first flow path and the second flow path are configured to direct the exhaust flow so that they are at least partially perpendicular to the discharge direction. An advantage of the present invention is that noise reduction is improved by a silencer device having a rim portion that can efficiently divide the discharge chamber into at least two chamber ranges. Since at least two chamber ranges each have a corresponding number of flow ports, the exhaust flow is divided into separate passages, in which the exhaust flow is not only guided in the direction of discharge but is also deflected from there, reducing the discharge velocity as it passes through the multiple first and second flow ports. In other words, the rim divides the discharge chamber to provide two distinct ranges, each having a first or second passage to which the exhaust flow is deflected from its linear discharge direction. This configuration effectively attenuates the exhaust flow, reduces noise, and improves the overall performance of the vehicle's pressure supply system.

[0009] In other words, the present invention relates to a discharge device for a vehicle pressure supply system, and more particularly to a solenoid modulator ABS valve. The discharge device includes a main body having a discharge inlet port for receiving an exhaust flow and a discharge line communicating with the discharge inlet port and interrupted by a discharge port for discharging the exhaust flow in a specific discharge direction. A silencer system is integrated into the discharge line to attenuate the exhaust flow. The system includes a silencer device defining a discharge chamber extending upstream with respect to the discharge direction, a sealing washer positioned adjacent to the silencer device, and a locking member configured to fix at least the sealing washer in the discharge line. The silencer device features a slice-shaped base having a plurality of flow ports and a rim protruding from the base into the discharge chamber. The rim is configured to divide the flow chamber into at least two ranges: a first chamber range and a second chamber range. The first chamber range includes a first set of flow ports and defines a first flow path from the tip inlet of the rim to the first set of flow ports. Similarly, the first chamber range includes a first set of flow ports and defines a first flow path from the tip inlet of the rim to the first set of flow ports. Preferably, the silencer system further includes a locking member configured to secure a sealing washer to the discharge line.

[0010] The term used herein includes “discharge device,” which refers to the entire device for managing exhaust flow. “Pressure supply(s)” refers to a system that provides compressed air, and “solenoid modulator ABS valve” refers to a type of discharge device used in an anti-lock braking system. “Main body” refers to the main structure of the device, while “discharge inlet port” and “discharge port” are openings for receiving and discharging air, respectively. Such discharge inlet ports may be provided by the supply ports of the ABS modulator solenoid valve. However, discharge devices having only discharge inlet ports and discharge ports are also possible. “Silencer system” and “silencer device” relate to components configured to reduce noise from the exhaust flow. “Sealing washer” is a sealing component, and “locking member” is the part that secures the washer. “Flow port” is an opening through which air can pass, and “rim” is a projection that helps divide the discharge chamber.

[0011] Further advantageous forms of the present invention are found in the dependent claims and detail the advantageous possibilities for realizing the above concept within the scope of the objectives and with respect to further advantages.

[0012] Preferably, the silencer device extends coaxially with respect to the sealing washer along the longitudinal axis, with multiple flow ports extending parallel to the longitudinal axis in the discharge direction. This coaxial arrangement suggests that the silencer device and the sealing washer share a common central axis, thereby promoting a streamlined airflow and potentially improving the efficiency of the discharge process. The coaxial alignment ensures that the silencer device and the sealing washer are positioned in a manner that facilitates direct and efficient interaction with the exhaust flow. The alignment (positioning) of the flow ports with respect to the discharge direction and the longitudinal axis proposes a configuration that minimizes turbulence and resistance, enabling a more efficient flow of exhaust air through the device.

[0013] More preferably, the first and second chamber ranges are formed symmetrically with respect to the axial direction. This symmetry contributes to the even distribution of airflow within the exhaust chamber, particularly within the first and second chamber ranges, ensuring that exhaust gases are evenly distributed across the flow ports, thereby reducing noise and vibration. The symmetrical configuration may also improve the structural integrity of the silencer device by evenly distributing the mechanical load.

[0014] It is even more preferable that the first and second plurality of flow ports have a total surface area of ​​at least 50%, preferably at least 60%, of the cross-sectional area of ​​the exhaust line at the position where the base portion of the silencer device is received. The flow ports are essential to the function of the silencer device because they facilitate the passage of exhaust through the silencer system. By specifying that the total surface area of ​​these flow ports constitutes a significant proportion of the cross-sectional area of ​​the exhaust line, it is ensured that there is sufficient capacity for the exhaust to pass through the silencer device without causing excessive back pressure. This is important for maintaining the efficiency of the exhaust system and for the silencer device to effectively attenuate exhaust noise. In other words, by ensuring that the flow ports occupy a significant portion of the cross-sectional area of ​​the exhaust line, the configuration minimizes the risk of airflow limitations that could otherwise lead to performance problems. In addition, this feature contributes to the overall durability and reliability of the exhaust device by reducing the possibility of pressure-related loads on the components.

[0015] In one preferred embodiment, the base portion and the rim portion are formed integrally.

[0016] This integrated molding improves the structural integrity and durability of the silencer device, potentially reducing the risk of component failure due to separation or displacement. In addition, the integrated molding simplifies the manufacturing process by eliminating the need for additional assembly steps to connect the base and rim sections. This can lead to cost reductions and improved consistency in the production of exhaust devices. This new feature also ensures a seamless transition between the base and rim sections, which improves flow dynamics within the exhaust chamber. The continuous structure allows for more precise control of the flow path defined by the first and second chamber ranges, potentially resulting in more effective exhaust flow damping. This leads to quieter exhaust device operation, which is particularly beneficial in applications where noise reduction is critical, such as solenoid modulator ABS valves. Furthermore, the integrated molding of the base and rim sections contributes to a more compact configuration of the silencer device, as it eliminates the need for additional space to accommodate connections between separate components.

[0017] In a preferred embodiment, the main body includes a pin extending into the flow chamber and engaging with the silencer device. Preferably, the silencer device also has an inner skirt formed by a rim that circumferentially surrounds the pin. In addition, the silencer device may include a projection extending radially inward from the base and abutting against a stopper shoulder provided by the pin. The pin extending into the flow chamber and engaging with the silencer device ensures a secure and stable connection, which is important for maintaining the alignment and positioning of the silencer device within the discharge line. The inner skirt formed by the rim that circumferentially surrounds the pin provides an additional layer of stability and ensures that the silencer device remains properly seated and aligned during operation. Furthermore, the projection extending radially inward from the base and abutting against the stopper shoulder provided by the pin fixes the silencer device in place.

[0018] In a more preferred embodiment, the inner skirt has a plurality of ribs projecting radially inward and abutting against the pins. The ribs in the inner skirt are configured to extend inward and contact the pins, thereby providing a structural contact area between these two components. This interaction ensures that the inner skirt is properly aligned and stabilized within the discharge unit. The ribs provide a means of distributing force and maintaining the structural integrity of the inner skirt, which is important for the effective functioning of the silencer system within the discharge line. By incorporating the ribs, the configuration addresses potential problems related to vibration and motion within the discharge unit, thereby improving its reliability and operational life.

[0019] In a preferred embodiment, the rim is configured to radially divide the exhaust chamber into a first chamber range and a second chamber range. In the sense of the independent claim, the silencer device includes a rim that protrudes into the exhaust chamber and is adapted to divide the flow chamber into at least a first chamber range and a second chamber range. The radial division suggests that the rim extends outward from the central axis and effectively segments the chamber into separate radial sections defining at least the first and second chamber ranges. Alternatively, the rim is configured to tangentially divide the exhaust chamber into a first chamber range and at least one second chamber range. The tangential division suggests that the rim is oriented to segment the chamber along a tangential, creating separate ranges that coincide with the tangential to the geometry of the chamber. By radially dividing the exhaust chamber, the exhaust device can control the distribution of exhaust flow across the radial sections of the chamber, optimizing the damping effect and noise reduction capability of the silencer system. On the other hand, tangential division allows for different flow patterns, and these patterns are also advantageous in directing the exhaust flow in a manner that improves noise reduction performance by deflecting the exhaust flow in a controlled manner from the exhaust direction.

[0020] In a preferred embodiment, the rim portion has an outer skirt extending circumferentially coaxially with respect to the longitudinal axis, the outer skirt configured to divide the discharge chamber such that a second chamber range defines an outer annular second chamber range surrounding a first chamber range. This configuration of the outer skirt divides the discharge chamber so that an outer annular second chamber range is formed. The second chamber range surrounds the first chamber range, which is a separate spatial arrangement. The introduction of the outer skirt and its coaxial extension provides a mechanism for dividing the discharge chamber into concentric ranges, where the second chamber range surrounds the first chamber region. This structural arrangement can have a significant impact on the flow dynamics and acoustic characteristics of the discharge device by providing a first and second flow path defined by each concentric range. By defining an outer annular second chamber range, the claim suggests a potential enhancement in exhaust flow distribution and control. The concentric division of the chamber range makes the exhaust flow more controllable and more efficiently attenuated. Furthermore, the coaxial and circumferential characteristics of the outer skirt extension suggest a configuration that is likely to distribute the flow symmetrically and evenly around the longitudinal axis, which contributes to a uniform and consistent flow distribution.

[0021] In a preferred embodiment, the outer skirt is coaxially positioned and radially offset from the inner skirt. This configuration suggests that the outer and inner skirts share a common central axis and ensure alignment along the same longitudinal axis. However, the radial offset indicates an intentional gap between the two skirts in the radial direction, meaning that the outer skirt is positioned at a certain distance from the inner skirt rather than in direct contact with or overlapping it. This arrangement of the skirts can affect the flow dynamics within the exhaust chamber. The coaxial alignment of these skirts allows the exhaust flow to be distributed more uniformly around the central axis, potentially reducing turbulence and enhancing the damping effect of the silencer system. The radial offset further ensures the existence of a predetermined gap between the skirts, which forms a first chamber range.

[0022] Preferably, the silencer device is formed from a polymer material, at least partially. The use of polymer materials in the structure of the silencer device provides superior resistance to various chemicals and environmental factors compared to conventional materials such as metals. In addition, the incorporation of polymer materials can contribute to reducing the overall weight of the exhaust device, which can be advantageous for vehicle performance and fuel efficiency. Furthermore, the use of polymer materials provides additional flexibility in configuration, enabling more complex shapes and structures that can improve noise reduction performance or facilitate easier integration into the exhaust line.

[0023] In a preferred embodiment, the base portion is sealed and in contact with a sealing washer. This interaction ensures a secure and airtight connection between the silencer device and the sealing washer, which is important for maintaining the integrity of the exhaust system's silencing function. The sealing interaction prevents potential exhaust leakage. In addition, the secure contact of the base portion with the sealing washer contributes to the stability and durability of the exhaust system by minimizing the risk of misalignment or displacement of the silencer components during operation.

[0024] Preferably, the base portion has a front face facing a sealing washer having an axially projecting sealing line that is sealed and abuts against the sealing washer. Due to the interaction between the sealing line and the sealing washer, a tight seal essential for the proper functioning of the discharge device is ensured. Thus, by providing a more reliable and effective seal between the base portion and the sealing washer, the sealing line improves the sealing ability of the discharge device.

[0025] More preferably, the silencer device is arranged upstream of the sealing washer in the discharge direction. The silencer device positioned upstream means that it faces the exhaust before the sealing washer. With this positioning, the silencer device can perform its main function of attenuating the exhaust before the exhaust reaches the sealing washer. Similarly, the sealing washer is positioned to further manage the flow characteristics after the first attenuation has occurred. In this order, the exhaust flow first undergoes noise reduction and flow rate adjustment provided by the silencer device, which includes a slice-shaped base portion having a plurality of flow ports and a rim portion protruding into the discharge chamber. The rim portion divides the flow chamber into at least a first chamber range and a second chamber range, and each chamber range has a plurality of flow ports and flow paths respectively. By arranging the silencer device upstream, the exhaust flow is effectively managed step by step. In the first step, the flow is divided and adjusted through the chamber ranges and flow ports of the silencer device. In the second step, the sealing washer, which can provide an additional attenuation effect or sealing effect, comes into play. This continuous arrangement improves the overall noise reduction and flow management capabilities of the discharge device, leading to improved performance in terms of reducing discharge noise and more accurate control of the exhaust flow. Preferably, the locking member provided at least for fixing the sealing washer in the discharge line ensures that the components stay in their designated positions and maintains the integrity of the structure and function of the discharge device.

[0026] The present invention solves the above problem in a second aspect with a silencer device according to claim 14. In particular, according to a second aspect of the present invention, it is proposed that the silencer device is configured to be placed in the discharge line to attenuate the exhaust flow discharged in the discharge direction. When placed in the discharge line, the silencer device defines a discharge chamber extending upstream with respect to the discharge direction. The silencer device is characterized by a slice-shaped base portion having a plurality of flow ports and a rim portion projecting from the base portion into the discharge chamber. The rim portion is adapted to divide the flow chamber into at least a first chamber range and a second chamber range. The first chamber range includes a first plurality of flow ports and defines a first flow path from the tip inlet of the rim portion to the first plurality of flow ports. The second chamber range includes a second plurality of flow ports and defines a second flow path from the tip inlet of the rim portion to the second plurality of flow ports. By providing a silencer device having a rim portion for dividing the discharge chamber into at least two separate chamber ranges having corresponding first and second flow ports, the silencer device has the same advantages as described with respect to the first aspect of the present invention. Thus, the advantages and preferred embodiments of the first aspect are simultaneously the advantages and preferred embodiments of the second aspect of the present invention.

[0027] The present invention solves the above problems in a third aspect by means of the silencer system according to claim 15. In particular, according to a third aspect, the present invention proposes that the silencer device be specifically configured for a vehicle exhaust device configured to be arranged in an exhaust line for the purpose of attenuating an exhaust flow discharged in a specific discharge direction. The silencer system includes a silencer device, a sealing washer, and preferably a locking member. The silencer device is configured according to a second aspect of the present invention. By having such a silencer device, the silencer system has the same advantages as those described with respect to the first and second aspects of the present invention. Therefore, the advantages and preferred embodiments of the first and second aspects are simultaneously the advantages and preferred embodiments of the third aspect of the present invention.

[0028] In a fourth aspect, the present invention solves the above problems by means of a pressure supply unit and an exhaust device according to the first aspect of the present invention, in particular a vehicle having a solenoid modulator ABS valve, in particular a commercial vehicle. By providing an exhaust device according to the first aspect of the present invention, the vehicle has the same advantages as those described with respect to the first aspect of the present invention. Therefore, the advantages and preferred embodiments of the first aspect are simultaneously the advantages and preferred embodiments of the fourth aspect of the present invention.

[0029] These and other aspects of the present invention will be clarified and described with reference to the embodiments described below.

[0030] Examples of the present invention will be described below with reference to the drawings, with comparison to the prior art partially illustrated. The drawings are not necessarily intended to represent the examples to scale. The drawings are shown in schematic and / or slightly distorted shapes if useful for explanation. For any additional information to the teachings immediately recognizable from the drawings, the relevant prior art will be referenced. It should be noted that numerous modifications and changes can be made to the forms and details of the examples without departing from the general concept of the present invention. Features of the present invention disclosed in the specification, drawings and claims may be essential to further development of the invention, individually or in any combination. In addition, at least two combinations of features disclosed in the specification, drawings and / or claims are all included within the scope of the present invention.

[0031] The general concept of the present invention is not limited to the subject matter described in the exact form or detail of the preferred embodiments shown and described below, or the subject matter described in the claims.

[0032] For specified configuration ranges, values ​​within the specified limits of the range are also disclosed as limit values ​​and are therefore arbitrarily applicable and claimable. [Brief explanation of the drawing]

[0033] [Figure 1] This is a diagram showing one embodiment of the vehicle. [Figure 2] This is a cross-sectional view of one embodiment of a vehicle discharge device, showing the arrangement of the main body, discharge inlet port, discharge line, silencer system, sealing washer, locking member, and other components. [Figure 3] Figure 2 is a detailed view of the discharge device. [Figure 4a] This is a front view showing one embodiment of a silencer device having a slice-shaped base and multiple flow ports. [Figure 4b] Figure 4a is a rear view of the silencer device. [Figure 4c]Figure 4a is a perspective view of the silencer device from the front. [Figure 4d] Figure 4a is a perspective view showing the tip of the silencer device. [Modes for carrying out the invention]

[0034] Figure 1 shows a vehicle V, particularly a commercial vehicle CV, equipped with a pressure supply unit 3 having a discharge device (not shown), as will be described later with respect to Figures 2 and 3.

[0035] Figure 2 illustrates a discharge device 1 for a pressure supply unit of a vehicle (see Figure 1). The discharge device 1 can be configured as a solenoid modulator ABS valve 2. The discharge device 1 includes a main body 10 having an exhaust inlet port 150 for receiving an exhaust flow FE and a discharge line 120 communicating with the exhaust inlet port 150. The discharge line 120 is interrupted (ends) at a discharge port 130 for discharging the exhaust flow FE in the discharge direction E.

[0036] Preferably, the discharge device 1 further has an inlet port 110 configured to communicate with a supply line (not shown), and the discharge inlet port 150 is configured as a supply port 150' for supplying compressed air to a pneumatic system (not shown). For discharge of the pneumatic system (not shown), the supply port 150' receives an exhaust flow FE toward the discharge line 120.

[0037] The solenoid modulator ABS valve 2 is configured to operate in three operating states: In the pressure-filled state, the pneumatic system (not shown) is filled with compressed air received through the inlet port 110 and directed toward the supply port 150. In the pressure-maintaining state, the flow from the inlet port 110 to the supply port 150 is blocked. In the pressure-release state, the flow from the inlet port 110 to the supply port 150 is blocked, and the flow from the discharge inlet port 150', which is configured as the supply port 150, is directed toward the discharge port 130.

[0038] The exhaust system 1 further includes a silencer system 20. The silencer system 20 is located within the exhaust line 120 to attenuate the exhaust flow FE. The silencer system 20 includes a silencer device 210 that defines an exhaust chamber 211 extending upstream with respect to the exhaust direction E. A sealing washer 220 of the silencer system 20 is located adjacent to the silencer device 210, and a locking member 230 is configured to fix at least the sealing washer 230 within the exhaust line 120.

[0039] The silencer device 210 extends coaxially with respect to the sealing washer 220 along the longitudinal axis L, with a plurality of flow ports extending parallel to the longitudinal axis L in the discharge direction E.

[0040] In particular, as shown in the detailed view of Figure 3, the silencer device 210 has a slice-shaped base portion 212 having a plurality of flow ports and a rim portion 213 that protrudes from the base portion 212 toward the discharge chamber 211. The rim portion 213 divides the flow chamber into at least a first chamber range 215.1 and a second chamber range 215.2. The first chamber range 215.1 includes a first plurality of flow ports 214.1 and defines a first flow path 216.1 from the tip inlet portion 217 of the rim portion 213 toward the first plurality of flow ports 214.1. The second chamber range 215.2 includes a second plurality of flow ports 214.2 and defines a second flow path 216.2 from the tip inlet portion 217 of the rim portion 213 toward the second plurality of flow ports 214.2.

[0041] The first chamber range 215.1 and the second chamber range 215.2 are formed symmetrically with respect to the axial direction. The total surface area A of the first plurality of flow ports 214.1 and the second plurality of flow ports 214.2 is at least 50%, preferably at least 60%, of the cross-sectional area C of the discharge line 120 at the position where the base portion 212 is housed.

[0042] Preferably, the silencer device 210 is made at least partially of a polymer material PM and is positioned coaxially along the longitudinal axis L. The flow port extends in the discharge direction E and is parallel to the longitudinal axis L. The base portion 212 and the rim portion 213 are integrally formed, improving the structural integrity of the silencer device 210.

[0043] The main body 10 includes a pin 140 that extends into the flow chamber and engages with the silencer device 210. The silencer device 210 features an inner skirt 218.1 formed by a rim portion 213 that circumferentially surrounds the pin 140, and projections 219 that extend radially inward from the base portion 212 and abut against a stopper shoulder 141 provided by the pin 140. The inner skirt 218.1 has a plurality of ribs 218.1a that project radially inward and abut against the pin 140.

[0044] The rim portion 213 is configured to radially divide the discharge chamber 211 into a first chamber range 215.1 and a second chamber range 215.2. Alternatively, the rim portion 213 can tangentially divide the discharge chamber 211 into a first chamber range 215.1 and at least one second chamber range 215.2. The rim portion 213 includes an outer skirt 218.2 that extends circumferentially coaxially with respect to the longitudinal axis L and divides the discharge chamber 211 such that the second chamber range 215.2 forms an outer annular range enclosing the first chamber range 215.1. The outer skirt 218.2 is coaxially positioned and radially offset from the inner skirt 218.1.

[0045] The base portion 212 is sealed and in contact with the sealing washer 220. The base portion 212 has a front surface 212a facing the sealing washer 220, which has an axially projecting sealing line 212b that is sealed and in contact with the sealing washer 220. The silencer device 210 is positioned upstream of the sealing washer 220 in the discharge direction E.

[0046] Overall, the exhaust device 1 is configured to efficiently manage and attenuate the exhaust flow FE in the vehicle's pressure supply system, providing improved performance and reduced noise.

[0047] Figure 4a shows a plan view of a silencer device 210, preferably formed of a polymer material PM. The silencer device 210 includes a base portion 212 having a front surface 212a and an annularly formed, axially projecting sealing line 212b. The base portion 212 includes a first plurality of flow ports 214.1 provided in a first chamber range 215.1 and a second plurality of flow ports 214.2 provided in a second chamber range 215.2. The first and second plurality of flow ports 214.1, 214.2 are uniformly distributed within their respective chamber ranges 215.1, 215.2. The first plurality of flow ports 214.1 are centrally located, while the second plurality of flow ports 214.2 are arranged around the central flow port of the first plurality of flow ports 214.1. This arrangement of flow ports facilitates the passage of exhaust flow through the silencer device 210.

[0048] Figure 4b shows the silencer device 210 as seen from the tip inlet 217, illustrating the internal structure in more detail. The silencer device 210 is characterized by a rim portion 213 that protrudes from the base portion 212 into the discharge chamber (not shown). This rim portion 213 divides the discharge chamber into a first chamber range 215.1 and a second chamber range 215.2. The first chamber range 215.1 is defined by an inner skirt 218.1 that is coaxially positioned and radially offset from the outer skirt 218.2. The second chamber range 215.2 surrounds the first chamber range 215.1 and is defined by the outer skirt 218.2.

[0049] The inner skirt 218.1 has a plurality of ribs 218.1a that project radially inward and abut against a pin (not shown). The base portion 212 also includes a projection 219 extending radially inward from the base portion 212 that abuts against a stopper shoulder 141 provided by the pin 140 (not shown in the figure). This configuration ensures that the silencer device 210 is securely engaged with the pin 140 and maintains its position in the discharge line.

[0050] The flow ports 214.1 and 214.2 are arranged symmetrically with respect to the axial direction, enabling efficient distribution of the exhaust flow through the silencer device 210. A first flow path 216.1 is defined from the tip inlet 217 of the rim portion 213 to a plurality of first flow ports 214.1, while a second flow path 216.2 is defined from the tip inlet 217 of the rim portion 213 to a plurality of second flow ports 214.2. This arrangement facilitates the division of the exhaust flow into separate passages, improving the damping effect of the silencer device 210.

[0051] Figure 4c shows a perspective view of a silencer device 210 having an upward-facing, slice-shaped base portion 212. The base portion 212 has a front surface 212a with an axially projecting sealing line 212b, which is configured to be sealed and in contact with a sealing washer. The rim portion 213 projects from the base portion 212 and is integrally formed with it.

[0052] Figure 4d shows another perspective view of the silencer device 210, providing additional details. The rim portion 213 is shown to include an inner skirt 218.1 and an outer skirt 218.2. The inner skirt 218.1 is formed by the rim portion 213 and surrounds the pin 140 (not shown in the figure) in a circumferential direction. The inner skirt 218.1 has a number of ribs 218.1a that project radially inward and abut against the pin 140. The outer skirt 218.2 extends circumferentially coaxially with respect to the longitudinal axis L and is configured to divide the discharge chamber such that a second chamber range 215.2 defines an outer annular second chamber range that surrounds the first chamber range 215.1.

[0053] In summary, the present invention relates to a discharge device for a vehicle pressure supply unit, particularly a solenoid modulator ABS valve, comprising a main body having a discharge line that terminates at a discharge port for discharging an exhaust flow, and a silencer system positioned in the discharge line for attenuating the exhaust flow. The silencer system includes a silencer device defining a discharge chamber extending upstream with respect to the discharge direction, and a sealing washer positioned adjacent to the silencer device. The present invention proposes that the silencer device has a slice-shaped base and a rim protruding from the base into the discharge chamber, the rim being adapted to divide the flow chamber into at least a first chamber range having a first plurality of flow ports and a second chamber range having a second plurality of flow ports, each flow port defining a flow path from the tip inlet of the rim to one of the first or second plurality of flow ports.

[0054] Other variations of the disclosed embodiments can be understood and implemented by those skilled in the art when carrying out the invention by examining the drawings, disclosures and appended claims.

[0055] In the claims, the word “including” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude the plural.

[0056] A single unit or device can perform the functions of multiple items described in a claim. The mere fact that certain means are described in different dependent claims does not mean that combinations of these means cannot be used advantageously.

[0057] No reference numeral in a claim should be construed as limiting the scope of the claim. [Explanation of symbols]

[0058] 1 Ejection device 2 ABS valves 3. Pressure supply unit 10 Main body 20 Silencer System 110 Entrance Port 120 discharge line 130 discharge ports 140 pins 141 Stopper Shoulder 150 Inlet / Outlet Ports 150' supply port 210 Silencer device 211 Discharge Chamber 212 Base section 212a front 212b Ceiling Line 213 Rim section 241.1 First Multiple Flow Ports 241.2 Second Multiple Flow Ports 215.1 First Chamber Range 215.2 Second Chamber Range 216.1 First channel 216.2 Second channel 217 Tip entrance 218.1 Inner Skirt 218.2 Outer skirt 218.1a Rib 219 Protrusion 220 Sealing Washer 230 Locking member FE exhaust flow V Vehicle CV Commercial Vehicles E Ejection direction L Longitudinal axis A Total surface area C cross-sectional area PM Polymer Materials M Mounting position

Claims

1. A discharge device (1) for a pressure supply unit (3) for a vehicle (V), particularly a solenoid modulator ABS valve (2), - A main body (10) having an exhaust inlet port (150) for receiving exhaust flow (FE), and an exhaust line (120) that communicates with the inlet port (150) and is interrupted by an exhaust port (130) for discharging exhaust flow (FE) in the discharge direction (E), - A silencer system (20) including a silencer device (210) positioned in the exhaust line (120) to attenuate the exhaust flow (FE) and defining an exhaust chamber (211) extending upstream with respect to the exhaust direction (E), and a sealing washer (220) positioned adjacent to the silencer device (210) In the discharge device including, The silencer device (210) has a slice-shaped base portion (212) having a plurality of flow ports (214.1, 214.2) and a rim portion (213) that protrudes from the base portion (212) toward the discharge chamber (211), wherein the rim portion (213) is adapted to divide the flow chamber (211) into at least a first chamber range (215.1) and a second chamber range (215.2), and the first chamber range (215.1) has a first plurality of flow ports Discharge device (1) characterized in that it has a rim (214.1) and defines a first flow path (216.1) from the tip inlet (217) of the rim (213) to the first plurality of flow ports (214.1), and the second chamber range (215.2) has a second plurality of flow ports (214.2) and defines a second flow path (216.2) from the tip inlet (217) of the rim (213) to the second plurality of flow ports (214.2).

2. The discharge device (1) according to claim 1, characterized in that the silencer device (210) extends coaxially with respect to the sealing washer (220) along the longitudinal axis (L), with a plurality of flow ports (214.1, 214.2) extending parallel to the longitudinal axis (L) in the discharge direction (E).

3. The discharge device (1) according to claim 1 or 2, characterized in that the first plurality of flow ports (214.1) and the second plurality of flow ports (214.2) have a total surface area (A) that is at least 50%, particularly at least 60%, of the cross-sectional area (C) of the discharge line (120) at the mounting position (M) in which the base portion (212) is housed.

4. The discharge device (1) according to any one of claims 1 to 3, characterized in that the base portion (212) and the rim portion (213) are integrally formed.

5. The main body (10) includes a pin (140) that extends to the flow chamber and engages with the silencer device (210), and the silencer device (210) is preferably, - The inner skirt (218.1) formed by the rim portion (213) that surrounds the pin (140) in the circumferential direction, - A projection (219) extending radially inward from the base portion (212) that contacts the stopper shoulder (141) provided by the pin (140). The discharge device (1) according to any one of claims 1 to 4, characterized in that it has at least one of the above.

6. The discharge device (1) according to claim 5, characterized in that the inner skirt (218.1) has a plurality of ribs (218.1a) that protrude radially inward and abut against the pin (140).

7. The discharge device (1) according to any one of claims 1 to 6, characterized in that the rim portion (213) is configured to radially divide the discharge chamber (211) into a first chamber range (215.1) and a second chamber range (215.2), or the rim portion (213) is configured to tangentially divide the discharge chamber (211) into a first chamber range (215.1) and at least one second chamber range (215.2).

8. The discharge device (1) according to any one of claims 1 to 6, wherein the rim portion (213) has an outer skirt (218.2) extending circumferentially coaxially with respect to the longitudinal axis (L), and the outer skirt (218.2) is configured to divide the discharge chamber (211) such that the second chamber range (215.2) defines an outer annular second chamber range that surrounds the first chamber range (215.1).

9. The discharge device (1) according to claim 8, characterized in that the outer skirt (218.2) is arranged coaxially and is radially offset from the inner skirt (218.1).

10. The discharge device (1) according to any one of claims 1 to 9, characterized in that the silencer device (210) is at least partially formed of polymer material (PM).

11. The discharge device (1) according to any one of claims 1 to 10, characterized in that the base portion (212) is sealed and in contact with the sealing washer (220).

12. The discharge device (1) according to claim 11, characterized in that the base portion (212) has a front surface (212a) facing the sealing washer (220) which has an axially projecting sealing line (212b) that is sealed and in contact with the sealing washer (220).

13. The discharge device (1) according to any one of claims 1 to 12, characterized in that the silencer device (210) is located upstream of the sealing washer (220) in the discharge direction (E).

14. A silencer device (210) for a discharge device (1) of a pressure supply unit (3) for a vehicle (V), particularly a solenoid modulator ABS valve (2), and more particularly for a discharge device (1) according to any one of claims 1 to 13, - In the silencer device (210), which is positioned in the exhaust line (120) to attenuate the exhaust flow (FE) discharged in the discharge direction (E), and which defines an exhaust chamber (211) extending upstream with respect to the discharge direction (E) when positioned in the exhaust line (120), - The silencer device (210) has a slice-shaped base portion (212) having a plurality of flow ports and a rim portion (213) projecting from the base portion (212) toward the discharge chamber (211), wherein the rim portion (213) is adapted to divide the flow chamber into at least a first chamber range (215.1) and a second chamber range (215.2), and the first chamber range (215.1) has a first plurality of flow ports ( A silencer device (210) characterized in that it has 214.1) and defines a first flow path (216.1) from the tip inlet (217) of the rim portion (213) to the first plurality of flow ports, and the second chamber range (215.2) has a second plurality of flow ports (214.2) and defines a second flow path (216.2) from the tip inlet (217) of the rim portion (213) to the second plurality of flow ports.

15. A silencer system (20) for a vehicle (V) exhaust device (1) configured to be positioned in the exhaust line (120) of the exhaust device (1) for attenuating an exhaust flow (FE) discharged in the discharge direction (E), wherein the silencer system (20) comprises a silencer device (210) as described in claim 14 and a sealing washer (220) positioned adjacent to the silencer device (210).

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