Stabilizing device for motor vehicles comprising compressed-air braking systems

• US 7,284,802 B2
• Filed: 07/30/2001
• Issued: 10/23/2007
• Est. Priority Date: 08/02/2000
• Status: Expired due to Term

• Current Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Original Assignee: Knorr-Bremse Systeme Fur Nutzfahrzeuge GMBH (Estate of Heinz Hermann Thiele)
• Inventors: Herges, Michael, Hecker, Falk, Hummel, Stefan, Ziegler, Andreas, Woerner, Dieter, Schwab, Frank
• Primary Examiner(s): KING, BRADLEY T
• Application Number:
  US10/343,203
• Publication Number:
  US 20040032162A1
• Time in Patent Office: 2,276 Days
• Field of Search: 303/7, 303/15, 303/123, 303/127, 303/140, 303/146, 303/118.1, 303/113.2
• US Class Current: 303/7
• CPC Class Codes: B60T 13/683 in pneumatic systems or parts thereof in vacuum systems B60T13/72
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 2270/313 with less than three sensors (yaw rate, steering angle, lateral acceleration)
• CPC Class Codes: B60T 8/17554 specially adapted for enhancing stability around the vehicles longitudinal axle, i.e. roll-over prevention road vehicle drive control systems for roll-over prevention otherwise than by controlling a particular sub-unit B60W30/04
• CPC Class Codes: B60T 8/243 for roll-over protection
• CPC Class Codes: B60T 8/248 Trailer sway, e.g. for preventing jackknifing
• CPC Class Codes: B60T 8/4818 in pneumatic brake systems

Abstract

The invention relates to a motor vehicle comprising a compressed-air braking system. Said vehicle has two braking cylinders, which can be impinged by compressed-air from a compressed-air reserve by means of a manually actuated brake valve. The braking cylinders have ABS pressure-control valves, which can be selectively impinged by compressed air from the compressed-air reserve, using a slip control valve. A stability sensor detects a motor vehicle position and a control device selectively supplies the slip control valve and the ABS pressure-control valves with compressed air, in accordance with the signals of the stability sensor.

Claims

1. Motor vehicle having a pneumatically operated braking system, comprising:

at least one pair of brake cylinders, each pair of brake cylinders having a single shuttle valve, each of the brake cylinders having an ABS pressure control valve, each of the two ABS pressure control valves of each pair of brake cylinders being connected to the single shuttle valve of their respective pair of brake cylinders, wherein, on the one hand, each shuttle valve is connectable by way of a brake valve and, on the other hand, is connectable by way of an ASR valve selectively with compressed air;

a first pressure sensor for detecting a brake pressure demanded by a driver;

a stability sensor by which a vehicle position can be detected;

a control device by which the ASR valve, as a function of signals from the stability sensor, can be acted upon to supply an ESP pressure intended for stabilization, wherein a brake pressure results from an addition of the brake pressure demanded by the driver and the ESP pressure;

a TP valve, the TP valve being connected to a second shuttle valve which, on the one hand, is connectable by way of the brake valve and, on the other hand, by way of a pressure control valve with compressed air; and

a second pressure sensor in a compressed-air line from the second shuttle valve to the TP valve for detecting a brake pressure built up to the trailer;

wherein the control device selectively acts upon the TP valve as a function of the signals from the stability sensor via the ESP pressure intended for stabilization, such that the brake pressure to the TP valve results from an addition of the brake pressure demanded by the driver and the ESP pressure.

2. Pneumatically operated braking system for a motor vehicle, comprising:

at least one pair of brake cylinders, each pair of brake cylinders having a single shuttle valve, each of the brake cylinders having an ABS pressure control valve, wherein each of the two ABS pressure control valves of each pair of brake cylinders are connected to the single shuttle valve of their respective pair of brake cylinders, and on the one hand, each shuttle valve is connectable by way of a brake valve and, on the other hand, is connectable by way of an ASR valve selectively with compressed air;

a first pressure sensor for detecting a brake pressure demanded by the driver;

a stability sensor by which a vehicle position can be detected;

a control device being provided by which the ASR valve, as a function of signals of the stability sensor, can be acted upon to supply an ESP pressure intended for the stabilization, wherein a brake pressure results from an addition of the brake pressure measured by the pressure sensor and the ESP pressure;

a TP valve, the TP valve being connected to a second shuttle valve which, on the one hand, is connectable by way of the brake valve and, on the other hand, by way of a pressure control valve with compressed air; and

a second pressure sensor in a compressed-air line from the second shuttle valve to the TP valve for detecting a brake pressure built up to the trailer;

wherein the control device selectively acts upon the TP valve as a function of the signals from the stability sensor via the ESP pressure such that the brake pressure to the TP valve results from an addition of the brake pressure demanded by the driver and the ESP pressure.