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Roll stability control system

A stable, lateral technology applied to brakes, electrical or fluid lines, vehicle components, etc.

Inactive Publication Date: 2007-01-17
BENDIX COMML VEHICLE SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although the hard braking procedure is generally full braking applied to the curved outer wheel, the test pulse to the curved inner wheel is a more sensitive operation

Method used

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Embodiment Construction

[0022] This invention relates to enhanced antilock braking systems (ABS), and more particularly to roll stability control (RSC) systems for use in pneumatically operated vehicle braking systems. The present invention can be applied to various lateral dynamic stability control systems of different configurations. As a representative of the present invention, figure 1 A system 10 constructed in accordance with a first embodiment of the present invention is schematically shown.

[0023] The system 10 is part of a two-channel vehicle braking system with ABS and RSC capabilities. The RSC capability is built out of the basic ABS capability, which will be described first below. One channel 12 of the system 10 controls a first brake chamber 14, for example associated with the right wheel on the axle. Another channel 16 controls a second brake chamber 18, for example associated with the left wheel on the axle.

[0024] The system 10 has a supply of air from an air supply, which in ...

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Abstract

A roll stability control system for a pneumatically operated vehicle brake system is implemented using simpler ABS hardware rather than more complex EBS hardware. For each brake chamber (14, 18) or channel (12, 16), two 3 / 2 solenoid controlled valves (62, 64) are used. An ECU (100) is operative to control the solenoids. The ECU (100) is preferably operative to provide a selected delivery pressure to the brake chamber without measurement of delivery pressure to the brake chamber.(14, 16). Supply air (20) is provided at a known pressure to a first solenoid controlled valve (62) that is associated with the brake chamber (14); the amount of time of energization and de-energization of the first valve (62) that is needed to provide an output therefrom of a given pressure, is calculated; and the first valve is energized and de-energized for the calculated times, thereby to cause a low-pressure test pulse to be provided to the brake chamber.

Description

technical field [0001] This invention relates to enhanced antilock braking systems and, more particularly, to roll stability control systems for use in pneumatically operated vehicle braking systems. The roll stability control system is implemented using simpler hardware rather than the more complex electronic braking system hardware. Background technique [0002] Roll Stability Control (RSC) is usually only implemented with electronically controlled braking systems (EBS). EBS involves electronically controlling the air brake system using electronic signals to allow air into the brake air chambers to operate the brake system. EBS provides a platform for a variety of vehicle control features. RSC is used to prevent rollover accidents. The RSC prevents the vehicle from tipping over about the longitudinal axis, the most common rollover scenario. The RSC can be part of the EBS as well as part of the trailer EBS. [0003] In a normal braking system or in an anti-lock braking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/36B60T8/24B60R16/02B60R16/023B60T8/1755B60T8/32
CPCB60T8/17554B60T8/241B60T8/327B60T2230/03B60R16/0233B60T8/3675B60T8/243B60T8/36
Inventor H·J·戈贝尔斯R·E·拜尔C·M·克纳克W·P·阿马托
Owner BENDIX COMML VEHICLE SYST LLC