US20030205127A1 - Sensor system for a vacuum brake booster - Google Patents
Sensor system for a vacuum brake booster Download PDFInfo
- Publication number
- US20030205127A1 US20030205127A1 US10/452,372 US45237203A US2003205127A1 US 20030205127 A1 US20030205127 A1 US 20030205127A1 US 45237203 A US45237203 A US 45237203A US 2003205127 A1 US2003205127 A1 US 2003205127A1
- Authority
- US
- United States
- Prior art keywords
- brake booster
- housing
- sensor arrangement
- partition
- chamber
- 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.)
- Abandoned
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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
- B60T13/24—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 the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
-
- 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
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a sensor arrangement (10) for a vacuum brake booster with a brake booster housing comprising at least one vacuum chamber (54) and one working chamber (26), which is separated from the latter by a moveable wall (20) and is connectable either to vacuum or at least atmospheric pressure, as well as a bore (18) disposed in the brake booster housing. The sensor arrangement (10) comprises a first partition (38), which seals the brake booster housing off from the ambient atmosphere when the sensor arrangement (10) is assembled. The sensor arrangement (10) also comprises a housing (12) with a first housing portion (13) which projects into the brake booster housing. The first housing portion (13) is divided by a second partition (40) into a first chamber (44) and a second chamber (46). When the sensor arrangement (10) is assembled the first housing portion (13) extends into the brake booster housing to an extent such that the first chamber (44) is directly connected to the vacuum chamber (54) of the brake booster via a first pressure inlet opening (52) and the second chamber (46) is directly connected to the working chamber (26) of the brake booster via a second pressure inlet opening (56). At least one pressure sensor (48, 50, 70) is disposed in the first housing portion (13).
Description
- The invention relates to a sensor arrangement for a vacuum brake booster for determining the pressure conditions prevailing in a brake booster and a vacuum brake booster provided with a sensor arrangement of this kind.
- Information on the pressure conditions in a vacuum brake booster can be used in various ways. For example, the maximum output operating state of the brake booster, i.e. the state as from which the brake booster is no longer able to assist a further pressure increase, can be detected by sensing the pressure states in the brake booster. Furthermore, sensing of the level of the vacuum in a vacuum chamber of the brake booster may serve, for example, to control a vacuum pump creating the vacuum.
- It is of particular advantage to sense the pressure states in a brake booster which is provided with an electromagnetic actuating unit. An electromagnetic actuating unit of this kind enables the vehicle brake system to be actuated by activating the brake booster in addition or as an alternative to pedal force-proportional actuation by the driver. For example, the above-mentioned electromagnetic actuating unit affords the possibility of operating the brake booster at maximum output independently of the pedal actuating force applied by the driver in a critical driving situation, e.g. when emergency braking, and thus providing the maximum possible braking force assistance (so-called brake assistant function). The pressure build-up speed in the working chamber of a brake booster can be used to recognize when a braking action is an emergency braking action. Knowledge of the pressure conditions in the brake booster is also of advantage when braking takes place completely automatically, for example in co-operation with a distance control system.
- It is usual, for the purpose of measuring the pressure in a vacuum brake booster, to use pressure sensors whose signals are processed by a controller, as a rule electronic, in order to control the electromagnetic actuating unit as desired.
- DE 44 36 297 A1 discloses a vacuum brake booster in which a pressure sensor for sensing the pressure in a working chamber is rigidly connected to a moveable wall disposed between a vacuum chamber and a working chamber. The pressure in the vacuum chamber is measured by a second pressure sensor, which is disposed either outside of a brake booster housing or inside the vacuum chamber.
- U.S. Pat. No. 4,633,757 discloses a vacuum brake booster with a pressure sensor disposed in a working chamber and a pressure sensor disposed in a vacuum chamber, wherein the pressure sensors are each secured to an inner wall of the brake booster housing. The disadvantage of these known arrangements lies in the fact that assembly and inspection and any necessary replacement of the pressure sensor give rise to significant difficulties and entail considerable expenditure.
- DE 197 29 158 C1 describes a vacuum brake booster with a pressure sensor which is disposed in a housing that is externally flange-mounted on a brake booster housing. The pressure sensor is connected to at least one working chamber and at least one is vacuum chamber via air guide ducts, which extend from the housing of the sensor arrangement into the brake booster housing. However the space requirements are increased as a result of disposing the pressure sensor outside of the brake booster housing.
- The object of the invention is to provide a sensor arrangement for sensing the pressure conditions in a vacuum brake booster which is structured in the simplest and most space-saving manner possible, although is at the same time easy to assembly and maintain.
- This object is achieved according to the invention by a sensor arrangement having the features indicated in claim 1. The sensor arrangement according to the invention is distinguished by the fact that at least one pressure sensor is disposed in a space-saving manner in a first housing portion which projects through a bore formed in a brake booster housing into the interior of the brake booster housing when the sensor arrangement is assembled. A first partition seals the brake booster housing off from the ambient atmosphere when the sensor arrangement is assembled. The first housing portion is divided by means of a second partition into a first chamber and a second chamber and extends into the brake booster housing to an extent such that the first chamber is connected to the vacuum chamber of the of the brake booster via a first pressure inlet opening and the second chamber is connected to the working chamber of the brake booster via a second pressure inlet opening. It is not necessary to attach special holders for the, at least one, pressure sensor, nor to configure the brake booster housing in a special way, which means that rational series production of different brake boosters with the same type of housing is possible. It is also unnecessary to modify the booster geometry. The solution according to the invention also has the advantage of the, at least one, pressure sensor being disposed in the interior of the brake booster housing and connected directly to the working chamber and the vacuum chamber of the brake booster via the pressure inlet openings, which increases accuracy of measurement and reduces susceptibility to errors.
- In a preferred embodiment of the sensor arrangement according to the invention a pressure sensor is disposed in each of the two chambers of the first housing portion, one of which pressure sensors senses the pressure in the vacuum chamber and the other the pressure in the working chamber.
- The pressure sensors are preferably absolute pressure sensors which sense the absolute pressure in the vacuum chamber and the working chamber. According to one embodiment of the sensor arrangement according to the invention, the first partition and the second partition constitute part of a one-piece housing insert which is disposed in the first housing portion. A configuration of this kind enables the sensor arrangement to be manufactured economically, as the housing insert can be manufactured at a low cost, e.g. as a plastics injection-molded part.
- The first housing portion is preferably of a hollow cylindrical form. The first partition and the second partition are advantageously of a diameter which is smaller than the inside diameter of the first housing portion, and a sealing element, in particular an O-ring, is disposed between each partition and an inner wall of the first housing portion. Thus the first housing portion is sealed off from the ambient atmosphere and the two chambers are separated in a sealing fashion at low cost, as commercially available O-rings can be used.
- According to a further embodiment of the sensor arrangement according to the invention, a pressure sensor formed as a differential pressure sensor is disposed just in one of the two chambers of the first housing portion. This differential pressure sensor, which is the sole pressure sensor of this embodiment, is connected to the first chamber via a third pressure inlet opening and to the second chamber of the first housing portion via a fourth pressure inlet opening. A sensor arrangement configured in this way, connected to a controller, is capable, by means of the differential pressure sensor, to detect the pressure difference in each case operating at the moveable wall of the brake booster and determine from this the power-assisted braking which is actually operative.
- According to a preferred configuration of the sensor arrangement according to the invention, the second partition is formed by an outer portion of the differential pressure sensor which is sealingly connected to an inner wall of the first housing portion. A configuration of this kind is particularly simple and inexpensive, as the second partition does not have to be constructed as a separate component.
- The first partition is preferably sealingly connected to an inner wall of a second housing portion disposed outside of the brake booster housing. This arrangement enables the sensor arrangement to be preassembled in the housing and then fitted in the bore formed in the brake booster housing in one operation.
- According to an advantageous configuration of the sensor arrangement according to the invention, the, at least one, pressure sensor is electrically connected via at least one connecting line which is passed through the first partition or the partitions in a sealed fashion. This, at least one, connecting line may be led outside of the brake booster housing to any desired connection point, for example to an electronic controller.
- According to a further embodiment of the sensor arrangement according to the invention, at least one carrier element for the, at least one, pressure sensor consists of electrically conductive material and is passed in sealed fashion through the first partition or the partitions. There is no need to provide the above-mentioned electrical connecting line in this arrangement.
- The, at least one, connecting line is preferably led to a connector disposed outside of the brake booster housing. The connector disposed outside of the brake booster housing may also be directly connected to the carrier element consisting of electrically conductive material. A configuration of this kind enables the pressure sensor to be preassembled in the brake booster housing, while its electrical connection, for example to an electronic controller, can be established when installing the brake booster by simply connecting the connector.
- According to a further embodiment of the sensor arrangement according to the invention, the first partition is part of a housing of an electronic controller, in which an electronic printed circuit board is disposed, this being connected in an electrically conductive manner to the, at least one, pressure sensor. The electronic printed circuit board can be connected to the, at least one, pressure sensor either via the, at least one, connecting line or the, at least one, carrier element consisting of electrically conductive material. This embodiment of the invention is distinguished by the fact that the, at least one, pressure sensor can be preassembled with the electronic controller to form a subassembly. The direct flange-mounting of the controller on the brake booster housing facilitates assembly and saves space. It also enables the connection paths of the electrical lines to be short and thus less susceptible to interference.
- A brake booster provided with the sensor arrangement according to the invention can be manufactured at low cost, as the sensor arrangement can be positioned in the interior of the brake booster housing in a simple assembly process without having to modify the brake booster housing or the brake booster geometry in a particular way. Not only is the arrangement of the, at least one, pressure sensor in the interior of the brake booster housing a particularly space-saving measure, but it also enables the pressure conditions in the brake booster to be sensed particularly reliably.
- Several embodiments of a sensor arrangement according to the invention are illustrated in detail in the following on the basis of the accompanying schematic figures, in which:
- FIG. 1 is a sectional side view of a first embodiment of the sensor arrangement according to the invention in the assembled state,
- FIG. 2 is a sectional side view of another embodiment of the sensor arrangement according to the invention in the assembled state.
- The
sensor arrangement 10 represented in FIG. 1 comprises a one-piece housing 12 with a hollow cylindricalfirst housing portion 13 and asecond housing portion 14 adjoining the latter. When thesensor arrangement 10 is assembled, thesecond housing portion 14 is disposed outside of a brake booster housing, which is not represented in its entirety here, while thefirst housing portion 13 projects through afirst bore 18 formed in ahousing wall 16 of a vacuum brake booster, asecond bore 22 formed in amoveable wall 20, and athird bore 28 formed in aboundary wall 24 of a workingchamber 26 into the interior of the brake booster housing. Pressure-tight sealing is effected byrespective sealing elements bores first housing portion 13 is passed. - A
housing insert 36, which is constructed as a one-piece component with afirst partition 38 and asecond partition 40, for example as a plastics injection-molded part, is disposed in the interior of thefirst housing portion 13. Thefirst partition 38 is sealingly connected to aninner wall 42 of thefirst housing portion 13 to provide a seal against the ambient atmosphere. Theother partition 40 is likewise sealingly connected to theinner wall 42 of thefirst housing portion 13 and divides thefirst housing portion 13 into afirst chamber 44 and asecond chamber 46. Thefirst partition 38 and thesecond partition 40 are of a diameter which is smaller than the inside diameter of the hollow cylindricalfirst housing portion 13, so thatsealing elements 47 a, 47 b are disposed between eachpartition inner wall 42 of thefirst housing portion 13 to provide the sealing connection. The dimensions of thepartitions first housing portion 13 are selected such that commercially available O-rings can be used assealing elements 47 a, 47 b. - A
pressure sensor chambers first chamber 44 is connected to avacuum chamber 54 of the vacuum brake booster via a first pressure inlet opening, so that thepressure sensor 48 positioned in thefirst chamber 44 senses the pressure in thevacuum chamber 54. Thesecond chamber 46 is connected to the workingchamber 26 of the vacuum brake booster via a second pressure inlet opening 56, so that thepressure sensor 50 positioned in thesecond chamber 46 senses the pressure in the workingchamber 26. - The
pressure sensor 48 positioned in thefirst chamber 44 is disposed on a carrier element 58 which consists of an electrically conductive material and is led in sealed fashion through thefirst partition 38 into thesecond portion 14 of thehousing 12. Thepressure sensor 50 positioned in thesecond chamber 46 is disposed on acarrier element 60 which likewise consists of an electrically conductive material. Thecarrier element 60 is passed in sealed fashion through thesecond partition 40 and thefirst partition 38 into thesecond portion 14 of thehousing 12. Thecarrier elements 58, 60 are connected to anelectrical connector 62 in thesecond portion 14 of thehousing 12. - The
pressure sensors electrical connections 64 on two opposite sides. Theelectrical connections 64 of thepressure sensors respective carrier element 58, 60, so that thepressure sensors respective carrier element 58, 60. - Another embodiment of the
sensor arrangement 10 in the assembled state is reproduced in FIG. 2. Thefirst partition 38 is sealingly connected to aninner wall 66 of thesecond housing portion 14 to provide a seal against the ambient atmosphere. Thefirst partition 38 is of a diameter which is smaller than the inside diameter of the hollow cylindricalsecond housing portion 14, so that the sealingelement 47 a is disposed between thepartition 38 and theinner wall 66 of thesecond housing portion 14 to provide a seal. - A
pressure sensor 70 which is formed as a differential pressure sensor is disposed in thefirst chamber 44. Thepressure sensor 70 comprises acylindrical centre portion 72 which is adjoined at its two end sides by respective outer portions 74 a, 74 b. The diameter of the outer portions 74 a, 74 b is greater in a region adjacent to thecentre portion 72 than the diameter of thecenter portion 72. Cooperating with the sealing element 47 b, the outer portion 74 b of thepressure sensor 70, which is directed into the interior of the brake booster housing, forms thesecond partition 40. The sealing element 47 b is disposed in a region of thecenter portion 72 of thepressure sensor 70 which is adjacent to the outer portion 74 b between theportion 72 and theinner wall 42 of thefirst housing portion 13, so that the widened diameter of the outer portion 74 b, in cooperation with the sealing element 47 b, limits the axial displaceability of thepressure sensor 70 along a longitudinal axis L. - A third pressure inlet opening76 formed in the
pressure sensor 70 connects thepressure sensor 70 to thefirst chamber 44, the pressure in which corresponds to the pressure in thevacuum chamber 54. A fourth pressure inlet opening, which is formed at the opposite side of thepressure sensor 70 and is not represented in the figure, connects thepressure sensor 70 to thesecond chamber 46, the pressure in which corresponds to the pressure in the workingchamber 26. Thedifferential pressure sensor 70 can thus sense the pressure difference between thevacuum chamber 54 and the workingchamber 26. - The
pressure sensor 70 is electrically connected by connectinglines 78, which are passed in sealed fashion through thefirst partition 38 and connected to theelectrical connector 62. - According to a further embodiment, which is not represented here, an electronic controller is flange-mounted directly on the
housing wall 16 of the brake booster in sealing fashion by means of a sealing element. Thefirst partition 38, which separates the interior space of the brake booster housing from the ambient atmosphere, is formed by a region of a controller housing. The controller comprises an electronic printed circuit board, which is connected in an electrically conductive manner via the connectinglines 78 or the electricallyconductive carrier elements 58, 60 directly to theelectrical connections 64 of theabsolute pressure sensors differential pressure sensor 70.
Claims (15)
1. Sensor arrangement (10) for a vacuum brake booster comprising a brake booster housing with at least one vacuum chamber (54) and one working chamber (26), which is separated from the latter by a moveable wall (20) and is connectable either to vacuum or at least atmospheric pressure, as well as a bore (18) disposed in the brake booster housing, wherein the sensor arrangement (10) comprises:
a first partition (38), which seals the brake booster housing off from the ambient atmosphere when the sensor arrangement (10) is assembled,
a housing (12) with a first housing portion (13) which projects into the brake booster housing and is divided by a second partition (40) into a first chamber (44) and a second chamber (46), wherein, when the sensor arrangement (10) is assembled, the first housing portion (13) extends into the brake booster housing to an extent such that the first chamber (44) is directly connected to the vacuum chamber (54) of the brake booster via a first pressure inlet opening (52) and the second chamber (46) is directly connected to the working chamber (26) of the brake booster via a second pressure inlet opening (56), and
at least one pressure sensor (48, 50, 70) disposed in the first housing portion (13).
2. Sensor arrangement according to claim 1 ,
characterized in that a pressure sensor (48, 50) is disposed in each of the two chambers (44, 46) of the first housing portion (13).
3. Sensor arrangement according to claim 2 ,
characterized in that the pressure sensors (48, 50) are absolute pressure sensors.
4. Sensor arrangement according to one of the preceding Claims,
characterized in that the first partition (38) and the second partition (40) constitute part of a one-piece housing insert (36) which is disposed in the first housing portion (13).
5. Sensor arrangement according to one of the preceding Claims,
characterized in that the first housing portion (13) is of a hollow cylindrical form.
6. Sensor arrangement according to claim 5 ,
characterized in that the first partition (38) and the second partition (40) are of a diameter which is smaller than the inside diameter of the first housing portion (13), and a sealing element (47 a, 47 b), in particular an O-ring, is disposed between each partition (38, 40) and an inner wall (42) of the first housing portion (13).
7. Sensor arrangement according to claim 1 ,
characterized in that a pressure sensor (70) formed as a differential pressure sensor is disposed just in one of the two chambers (44, 46) of the first housing portion (13) and is connected to the first chamber (44) of the first housing portion (13) via a third pressure inlet opening (76) and to the second chamber (46) of the first housing portion (13) via a fourth pressure inlet opening (78).
8. Sensor arrangement according to claim 7 ,
characterized in that the second partition (40) is formed by an outer portion (74 b) of the differential pressure sensor (70) which is sealingly connected to an inner wall (42) of the first housing portion (13).
9. Sensor arrangement according to one of claims 1 to 3 or 5 to 8,
characterized in that the first partition (38) is sealingly connected to an inner wall (66) of a second housing portion (14) disposed outside of the brake booster housing.
10. Sensor arrangement according to one of the preceding Claims,
characterized in that the, at least one, pressure sensor (48, 50, 70) is electrically connected via at least one connecting line (78) which is passed through the first partition (38) or the partitions (38, 40) in a sealed fashion.
11. Sensor arrangement according to one of claims 1 to 9 ,
characterized in that at least one carrier element (58, 60) for the, at least one, pressure sensor (48, 50, 70) consists of electrically conductive material and is passed through the first partition (38) or the partitions (38, 40) in sealed fashion.
12. Sensor arrangement according to claim 10 ,
characterized in that the, at least one, connecting line (78) is led to a connector (62) disposed outside of the brake booster housing.
13. Sensor arrangement according to claim 11 ,
characterized in that the, at least one, carrier element (58, 60) is led to a connector (62) disposed outside of the brake booster housing.
14. Sensor arrangement according to one of claims 1 to 3 , 5, 7 or 9 to 13,
characterized in that the first partition (38) is part of a housing of an electronic controller, in which an electronic printed circuit board is disposed, this being connected in electrically conductive manner to the, at least one, pressure sensor (48, 50, 70).
15. Vacuum brake booster with a brake booster housing containing at least one vacuum chamber (54) and one working chamber (26), which is separated from the latter by a moveable wall (20) and is connectable either to vacuum or at least atmospheric pressure,
characterized by a sensor arrangement (10) according to one of claims 1 to 14 .
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10061153.2 | 2000-12-08 | ||
DE10061153A DE10061153A1 (en) | 2000-12-08 | 2000-12-08 | Sensor arrangement for a vacuum brake booster and a vacuum brake booster equipped with it |
PCT/EP2001/013914 WO2002046011A1 (en) | 2000-12-08 | 2001-11-28 | Sensor system for a vacuum brake booster |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/013914 Continuation WO2002046011A1 (en) | 2000-12-08 | 2001-11-28 | Sensor system for a vacuum brake booster |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030205127A1 true US20030205127A1 (en) | 2003-11-06 |
Family
ID=7666338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/452,372 Abandoned US20030205127A1 (en) | 2000-12-08 | 2003-06-02 | Sensor system for a vacuum brake booster |
Country Status (8)
Country | Link |
---|---|
US (1) | US20030205127A1 (en) |
EP (1) | EP1339583B1 (en) |
JP (1) | JP2004527409A (en) |
KR (1) | KR20030055309A (en) |
AU (1) | AU2002234530A1 (en) |
DE (2) | DE10061153A1 (en) |
ES (1) | ES2262694T3 (en) |
WO (1) | WO2002046011A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120259506A1 (en) * | 2011-04-05 | 2012-10-11 | Willy Klier | Fast detection of error conditions in vehicle vacuum sensors for a hydraulic boost compensation system |
CN103398819A (en) * | 2013-08-26 | 2013-11-20 | 昆山市兴利车辆科技配套有限公司 | Novel vehicle vacuum pressure sensor |
US20160052499A1 (en) * | 2014-08-19 | 2016-02-25 | Toyota Jidosha Kabushiki Kaisha | Control device for electrically-driven vacuum pump |
KR20180112712A (en) * | 2017-04-04 | 2018-10-12 | 센사타 테크놀로지스, 인크 | Multi-chamber pressure sensing apparatus |
CN114112183A (en) * | 2021-10-28 | 2022-03-01 | 凯晟动力技术(嘉兴)有限公司 | Vacuum degree pressure sensor for automobile brake power-assisted braking |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040003571A (en) * | 2002-07-03 | 2004-01-13 | 현대자동차주식회사 | Vacuum switch for prevention water-inflow of automobile |
CN105216775A (en) * | 2015-10-21 | 2016-01-06 | 扬州金铭电子科技有限公司 | A kind of environment protection type vacuum pump controller |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633757A (en) * | 1983-10-05 | 1987-01-06 | Nissan Motor Company, Limited | Brake booster |
US4683757A (en) * | 1986-03-24 | 1987-08-04 | Motorola, Inc. | Axial pressure sensor |
US5711204A (en) * | 1994-10-11 | 1998-01-27 | Lucas Industries Public Limited Company | Electronically controlled brake booster and method of operation thereof |
US6434456B1 (en) * | 2000-09-07 | 2002-08-13 | Kelsey-Hayes Company | High reliability pressure sensor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5937716Y2 (en) * | 1979-01-31 | 1984-10-19 | 日産自動車株式会社 | semiconductor differential pressure sensor |
JPH05256718A (en) * | 1992-03-13 | 1993-10-05 | Yokogawa Electric Corp | Differential pressure sensor |
JP3318804B2 (en) * | 1994-05-19 | 2002-08-26 | 日立建機株式会社 | Differential pressure sensor |
DE19647967B4 (en) * | 1996-11-20 | 2005-10-27 | Wilo Ag | Pump with pressure difference sensor |
DE19729158C1 (en) * | 1997-07-08 | 1998-10-01 | Lucas Ind Plc | Brake power intensifier control unit for motor vehicle solenoid-operated vacuum brake intensifier |
-
2000
- 2000-12-08 DE DE10061153A patent/DE10061153A1/en not_active Ceased
-
2001
- 2001-11-28 JP JP2002547769A patent/JP2004527409A/en active Pending
- 2001-11-28 AU AU2002234530A patent/AU2002234530A1/en not_active Abandoned
- 2001-11-28 EP EP01985343A patent/EP1339583B1/en not_active Expired - Lifetime
- 2001-11-28 WO PCT/EP2001/013914 patent/WO2002046011A1/en active IP Right Grant
- 2001-11-28 KR KR10-2003-7006706A patent/KR20030055309A/en not_active Application Discontinuation
- 2001-11-28 DE DE50109719T patent/DE50109719D1/en not_active Expired - Fee Related
- 2001-11-28 ES ES01985343T patent/ES2262694T3/en not_active Expired - Lifetime
-
2003
- 2003-06-02 US US10/452,372 patent/US20030205127A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633757A (en) * | 1983-10-05 | 1987-01-06 | Nissan Motor Company, Limited | Brake booster |
US4683757A (en) * | 1986-03-24 | 1987-08-04 | Motorola, Inc. | Axial pressure sensor |
US5711204A (en) * | 1994-10-11 | 1998-01-27 | Lucas Industries Public Limited Company | Electronically controlled brake booster and method of operation thereof |
US6434456B1 (en) * | 2000-09-07 | 2002-08-13 | Kelsey-Hayes Company | High reliability pressure sensor |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120259506A1 (en) * | 2011-04-05 | 2012-10-11 | Willy Klier | Fast detection of error conditions in vehicle vacuum sensors for a hydraulic boost compensation system |
US8874306B2 (en) * | 2011-04-05 | 2014-10-28 | Robert Bosch Gmbh | Fast detection of error conditions in vehicle vacuum sensors for a hydraulic boost compensation system |
CN103398819A (en) * | 2013-08-26 | 2013-11-20 | 昆山市兴利车辆科技配套有限公司 | Novel vehicle vacuum pressure sensor |
US20160052499A1 (en) * | 2014-08-19 | 2016-02-25 | Toyota Jidosha Kabushiki Kaisha | Control device for electrically-driven vacuum pump |
US9527490B2 (en) * | 2014-08-19 | 2016-12-27 | Toyota Jidosha Kabushiki Kaisha | Control device for electrically-driven vacuum pump |
KR20180112712A (en) * | 2017-04-04 | 2018-10-12 | 센사타 테크놀로지스, 인크 | Multi-chamber pressure sensing apparatus |
US10295427B2 (en) * | 2017-04-04 | 2019-05-21 | Sensata Technologies, Inc. | Multi-chamber pressure sensing apparatus |
KR102466069B1 (en) | 2017-04-04 | 2022-11-10 | 센사타 테크놀로지스, 인크 | Multi-chamber pressure sensing apparatus |
CN114112183A (en) * | 2021-10-28 | 2022-03-01 | 凯晟动力技术(嘉兴)有限公司 | Vacuum degree pressure sensor for automobile brake power-assisted braking |
Also Published As
Publication number | Publication date |
---|---|
WO2002046011A1 (en) | 2002-06-13 |
DE10061153A1 (en) | 2002-06-27 |
AU2002234530A1 (en) | 2002-06-18 |
EP1339583A1 (en) | 2003-09-03 |
KR20030055309A (en) | 2003-07-02 |
ES2262694T3 (en) | 2006-12-01 |
EP1339583B1 (en) | 2006-05-03 |
JP2004527409A (en) | 2004-09-09 |
DE50109719D1 (en) | 2006-06-08 |
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Owner name: LUCAS AUTOMOTIVE GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BORSCH, STEFAN;REEL/FRAME:014144/0062 Effective date: 20030407 |
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STCB | Information on status: application discontinuation |
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