Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-12-18
1999-12-28
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031192, 303DIG3, 303DIG4, 303DIG10, 137884, B60T 836
Patent
active
060071621
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a hydraulic automotive vehicle brake system with brake slip control and automatic brake management for active brake operations such as traction control and driving dynamics control.
German patent No. 42 32 311 discloses a hydraulic automotive vehicle brake system with anti-lock control which, in addition, includes automatic brake management for driving dynamics control to improve the vehicle tracking behavior. Special provisions must be made for driving dynamics control or traction slip control in order to have a prompt pressure fluid supply for brake management provided by a pump. Among others, the provisions include the arrangement of a pressure sensor at the pressure fluid conduit extending from the braking pressure generator, with a view to sensing the pilot pressure that is generated by the driver in the braking pressure generator.
A design variation relating to the arrangement of the pressure sensor on a special precharging device is shown in the journal ATZ, 96th edition, No. 11, on page 687. Generally, a complicated cable connection to the electronic control unit is required due to the positioning of the pressure sensor on the housing of the so-called charging piston unit.
Therefore, an object of the present invention is to provide a hydraulic automotive vehicle brake system with brake slip control and automatic brake management for traction control and/or driving dynamics control so that the pressure sensor can be mounted, by relatively reduced structural efforts, in a way being protected against external influences and electrically connectable to the electronic control unit in a virtually reliable fashion.
SUMMARY OF THE INVENTION
According to the present invention, this object is achieved for a hydraulic automotive vehicle brake system of the mentioned type by the characterizing features of patent claim 1. To reach the objective, the present invention is based on the idea of arranging the pressure sensor in a housing which accommodates the pressure modulation valves.
Further features and preferred design variations of the present invention can be seen in the subclaims which will be explained in the following, reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings,
FIG. 1 is a cross-sectional view of a pressure sensor.
FIG. 2 is a top view of the housing for the pressure modulation valves.
FIG. 3 is the inside view of a cover for the housing shown in FIG. 2.
DATAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 shows in a view (which is not drawn to scale) a preferred embodiment of a pressure sensor 1 of the claimed invention. The pressure sensor 1, with its stepped housing, is attached by a self-caulking engagement 11 in a stepped bore 12 of a housing 2 accommodating pressure modulation valves 3. The section of the housing 2 illustrates a branch line of pressure fluid conduit 13 which provides a connection between a braking pressure generator (not shown) and the pressure modulation valves 3. Pressure sensor 1 includes a measuring elements chamber which houses a preferably capacitive transducer 9. An annular seal 14 is interposed between the housing of the pressure sensor 1 and the capacitive transducer 9. Seal 14 prevents the escape of pressure fluid from the pressure fluid conduit 13. Remote from the hydraulically applied end face of the transducer 9 is a supporting plate 15 which takes up the pressure force applied by the fluid to the transducer 9. Contact pins 16 at the transducer 9 extend through the supporting plate 15 until another hollow chamber of the pressure sensor 1 which houses electric or electronic components 10 of the pressure sensor 1. The electronic components 10 of the pressure sensor 1 can also be mounted on a printed circuit board 8. The hollow chamber for the electronic components 10 in the hollow chamber and to a contact 19 which is stationarily arranged in the cover 4. Cover 4 has a carrier plate 7 on which electric or electronic components 10 are mounted. In the present embodim
REFERENCES:
patent: 5318072 (1994-06-01), Goedecke
patent: 5449227 (1995-09-01), Steinberg et al.
patent: 5482362 (1996-01-01), Robinson
patent: 5501514 (1996-03-01), Resch et al.
Czarnetzki Edwin
Hinz Axel
ITT Manufacturing Enterprises Inc.
Oberleitner Robert J.
Sy Mariano
LandOfFree
Hydraulic motor-vehicle brake system with anti-locking control a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic motor-vehicle brake system with anti-locking control a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic motor-vehicle brake system with anti-locking control a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2377481