Electro-pneumatic pressure control module implemented as a component and having an integrated inertial sensor

Patent metadata

Field	Value
Publication number	US-11866015-B2
Application number	US-201917280770-A
Country	US
Kind code	B2
Filing date	Sep 16, 2019
Priority date	Sep 28, 2018
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

An electro-pneumatic central pressure control module having at least a single channel, and which is implemented as a component for an electro-pneumatic service brake of a vehicle, having at least one pressure control channel which is electrically controllable with regard to a brake pressure. Also described is an electronic control device of the pressure control module having a board carrying electrical and electronic components, at least one inertial sensor being arranged on or at the at least one board and being electrically conductively connected to at least several of the electrical and electronic components on the board, in which an arrangement/apparatus ensures a lower vibration load of the inertial sensor on the board.

First claim

The invention claimed is:

1. An electro-pneumatic pressure control module having at least 1-channel, comprising:
a functional unit, for an electro-pneumatic service brake installation of a vehicle, having at least one first pressure control channel which is electrically controllable in terms of a first service brake pressure;
wherein:
a) for the first pressure control channel, the first service brake pressure for at least one service brake cylinder of the service brake installation is generated based on an operating air emanating from at least one compressed-air reservoir as a function of an electric brake request signal of an electric channel of a foot brake valve; and wherein
b) the first pressure control channel generates the first service brake pressure in the at least one service brake cylinder on at least one first axle; and wherein
c) the pressure control module has at least the following: at least one reservoir connector for connecting the at least one compressed-air reservoir; at least one first operating connector of the first pressure control channel for connecting the at least one first service brake cylinder on the at least one first axle; at least one first electric communications port for feeding at least one signal which represents a first service brake nominal pressure for the first pressure control channel and which is formed based on an electric brake request signal of an electric channel of a foot brake valve of the electro-pneumatic service brake installation; and at least one first ventilation of the first pressure control channel; as well as at least one first voltage supply connector for supplying the pressure control module with an electric voltage; and wherein
d) in the pressure control module
d1) an electronic control apparatus is integrated, the electronic control apparatus being configured such that the electronic control apparatus, as a function of the signal which is present at the first electric communications port and represents the first service brake nominal pressure for the first pressure control channel, generates a first electric control signal, corresponding to the first nominal service brake pressure, for a first electro-magnetic valve installation of the first pressure control channel; and
d2) the first electro-magnetic valve installation is integrated, the first electro-magnetic valve installation, as a function of the first electric control signal from the reservoir pressure of the at least one compressed-air reservoir, modulating a first actual service brake pressure at the first operating connector of the first pressure control channel; and
d3) at least one first pressure sensor is integrated, the first pressure sensor for a comparison with the first nominal service brake pressure feeding into the electronic control apparatus a first pressure measurement signal which represents the measured first actual service brake pressure into the electronic control apparatus, wherein the electronic control apparatus is furthermore configured such that the electronic control apparatus for the first pressure control channel performs a reconciliation between the first actual service brake pressure and the first nominal service brake pressure and, as a function of this reconciliation, actuates the first electro-magnetic valve installation so that the first nominal service brake pressure is present at the first operating connector; wherein

e) the electronic control apparatus has a circuit board which supports electric and electronic components, wherein routines at least for the service brake pressure control at least for the first pressure control channel are implemented in the electric and electronic components; wherein
f) at least one inertial sensor is disposed on or at the at least one circuit board and is connected in an electrically conducting manner to at least some of the electric and electronic components on the circuit board such that the output signals of the at least one inertial sensor are able to be fed into the at least some electric and electronic components; wherein
g) the pressure control module includes oscillation-decoupling means for at least partially decoupling the at least one inertial sensor from oscillations or impact sound to which the circuit board or components of the pressure control module is/are exposed during operation, and the oscillation-decoupling means includes a decoupling portion of a circuit board body of the circuit board on which the at least one initial sensor is held or disposed, wherein the decoupling portion by means of at least one clearance that partially or completely penetrates the circuit board body of the circuit board is separated from a remainder of the circuit board body of the circuit board with the exception of at least one circuit board bridge portion which connects, in particular in the manner of a bridge, the decoupling portion to the remainder of the circuit board body, wherein at least one electric connection between the at least one inertial sensor and the electric and electronic components on the remainder of the circuit board body is routed along the circuit board bridge portion, the electric connection directing the output signals of the at least one inertial sensor to the electric and electronic components.

2. The pressure control module of claim 1 , wherein the clearance includes at least one slot in the circuit board body, the slot at least partially surrounding the decoupling portion with the exception of the at least one circuit board bridge portion.

3. The pressure control module of claim 1 , wherein the at least one clearance is at least partially filled with a damping mass.

4. The pressure control module of claim 1 , wherein the circuit board bridge portion at least in portions has a smaller thickness than the remainder of the circuit board body and/or the decoupling portion.

5. An electro-pneumatic pressure control module having at least 1-channel, comprising:
a functional unit, for an electro-pneumatic service brake installation of a vehicle, having at least one first pressure control channel which is electrically controllable in terms of a first service brake pressure;
wherein:
a) for the first pressure control channel, the first controlled service brake pressure for at least one service brake cylinder of the service brake installation is generated based on an operating air emanating from at least one compressed-air reservoir as a function of an electric brake request signal of an electric channel of a foot brake valve; and wherein
b) the first pressure control channel generates the first service brake pressure in the at least one service brake cylinder on at least one first axle; and wherein
c) the pressure control module has at least the following: at least one reservoir connector for connecting the at least one compressed-air reservoir; at least one first operating connector of the first pressure control channel for connecting the at least one first service brake cylinder on the at least one first axle; at least one first electric communications port for feeding at least one signal which represents a first service brake nominal pressure for the first pressure control channel and which is formed based on an electric brake request signal of an electric channel of a foot brake valve of the electro-pneumatic service brake installation; and at least one first ventilation of the first pressure control channel; as well as at least one first voltage supply connector for supplying the pressure control module with an electric voltage; and wherein
d) in the pressure control module
d1) an electronic control apparatus is integrated, the electronic control apparatus being configured such that the electronic control apparatus, as a function of the signal which is present at the first electric communications port and represen

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Eisenberger Andreas
• Herges Michael
• Huber Christoph
• Steinberger Juergen

Classifications

• B60T13/683 Primary

  in pneumatic systems or parts thereof (in vacuum systems B60T13/72) · CPC title

• B60T7/12

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T8/1701

  Braking or traction control means specially adapted for particular types of vehicles (for vehicles having more than one drive axle B60T8/1769) · CPC title

• B60T8/171

  Detecting parameters used in the regulation; Measuring values used in the regulation · CPC title

• B60T8/176

  Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS (B60T8/1755 takes precedence) · CPC title