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US 12,691,861 B2Granted
Diagnostic method and braking system including a unit for performing the diagnostic method
AssigneeZF CV Systems Global GmbH
InventorJulian van Thiel
Life of this patent
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Abstract
A diagnostic method performs a self-diagnosis of an electronically controllable pneumatic braking system for a commercial vehicle. The method includes: receiving a learning signal about the braking system; in response to the reception, putting the braking system into a learning mode and performing the steps: performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving; detecting via a sensor arrangement a first learning system reaction of the braking system in response to the execution of the first activity; and storing the detected first learning system reaction as the first target system reaction in a memory. A braking system and a computer program are also disclosed.
Claims19
A diagnostic method for performing a self-diagnosis of an electronically controllable pneumatic braking system for a commercial vehicle, the diagnostic method comprising:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a first sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- and,
- storing the detected first learning system reaction as a first target system reaction in a first memory;
- performing a first system check with the steps:
- carrying out the predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- detecting, via the first sensor arrangement, a first diagnostic system reaction of the braking system in response to the execution of the predetermined first activity;
- comparing the first diagnostic system reaction in a first comparator with the previously stored first target system reaction;
- and,
- in the event of a deviation between the first target system reaction and the first diagnostic system reaction, outputting a first fault signal.
9 more elements
A diagnostic method for performing a self-diagnosis of an electronically controllable pneumatic braking system for a commercial vehicle, the diagnostic method comprising:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a first sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- storing the detected first learning system reaction as the first target system reaction in a first memory;
- and,
- wherein the predetermined first activity relates only to a first subsystem of the braking system.
4 more elements
A diagnostic method for performing a self-diagnosis of an electronically controllable pneumatic braking system for a commercial vehicle, the diagnostic method comprising:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a first sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- storing the detected first learning system reaction as the first target system reaction in a first memory;
- performing, in the learning mode, a predetermined second activity of the braking system with the commercial vehicle stationary or moving;
- detecting, in the learning mode, via a second sensor arrangement or the first sensor arrangement a second learning system reaction of the braking system in response to said performing the second activity;
- and,
- storing, in the learning mode, the detected second learning system reaction as a second target system reaction in a second memory or the first memory.
6 more elements
A diagnostic method for performing a self-diagnosis of an electronically controllable pneumatic braking system for a commercial vehicle, the diagnostic method comprising:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a first sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- storing the detected first learning system reaction as the first target system reaction in a first memory;
- and,
- wherein the first sensor arrangement contains at least one pressure sensor.
4 more elements
An electronically controllable pneumatic braking system for a commercial vehicle;
- the electronically controllable pneumatic braking system comprising:
- first and second compressed air supplies;
- a first brake circuit supplied by said first compressed air supply;
- a second brake circuit supplied by said second compressed air supply;
- at least one front axle brake pressure valve for controlling a front axle brake pressure on a front axle of the commercial vehicle;
- at least one rear axle brake pressure valve for controlling a rear axle brake pressure on at least one rear axle of the commercial vehicle;
- a central control unit for controlling the braking system;
- and,
- a diagnostic control unit suitable for carrying out a diagnostic method including the steps:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- storing the detected first learning system reaction as the first target system reaction in a first memory;
- performing a first system check with the steps:
- carrying out the predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- detecting, via the first sensor arrangement, a first diagnostic system reaction of the braking system in response to the execution of the predetermined first activity;
- comparing the first diagnostic system reaction in a first comparator with the previously stored first target system reaction;
- and,
- in the event of a deviation between the first target system reaction and the first diagnostic system reaction, outputting a first fault signal.
17 more elements
A computer program product comprising:
- program code for a braking system stored on a non-transitory computer readable medium;
- the braking system including first and second compressed air supplies;
- a first brake circuit supplied by said first compressed air supply;
- a second brake circuit supplied by said second compressed air supply;
- at least one front axle brake pressure valve for controlling a front axle brake pressure on a front axle of the commercial vehicle;
- at least one rear axle brake pressure valve for controlling a rear axle brake pressure on at least one rear axle of a commercial vehicle;
- a central control unit for controlling the braking system;
- and, a diagnostic control unit suitable for carrying out a diagnostic method;
- said program code being configured, when executed by a processor, to cause the braking system to carry out the diagnostic method of the braking system including:
- receiving a learning signal about the braking system;
- in response to receiving the learning signal, putting the braking system into a learning mode and performing the steps:
- performing a predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- via a sensor arrangement, detecting a first learning system reaction of the braking system in response to executing the first activity;
- storing the detected first learning system reaction as the first target system reaction in a first memory;
- performing a first system check with the steps:
- carrying out the predetermined first activity of the braking system with the commercial vehicle stationary or moving;
- detecting, via the first sensor arrangement, a first diagnostic system reaction of the braking system in response to the execution of the predetermined first activity;
- comparing the first diagnostic system reaction in a first comparator with the previously stored first target system reaction;
- and,
- in the event of a deviation between the first target system reaction and the first diagnostic system reaction, outputting a first fault signal.
17 more elements
Dependencies are inferred from the claim text.