# US 8,540,323 B2 · Electronically controlled braking device of a towing vehicle-trailer combination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,323 B2 - Document ID: US8540323B2 - Status: Granted - Kind: B2 - Application number: 12/448,832 - Filed: 2008-01-11 - Published: 2010-01-28 - Granted: 2013-09-24 - Earliest claimed: 2007-01-12 - Assignees: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH - Applicants: Walter Broch; Frank Werner - Inventors: Walter Broch; Frank Werner - Web page: https://patentgrep.com/patent/US8540323B2 ## CPC - B60T 8/1708: {for lorries or tractor-trailer combinations} - B60T 8/321: {deceleration (B60T8/34, B60T8/52, B60T8/54, B60T8/56, B60T8/58, B60T8/72, B60T8/86, B60T8/88 take precedence)} - B60T 8/323: {Systems specially adapted for tractor-trailer combinations} - B60T 8/327: {Pneumatic systems} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES ## Abstract An electronically controlled braking device of a towing vehicle-trailer combination, which includes at least a generating arrangement (FBM) for generating at least one brake request signal, an electronic towing vehicle brake control unit associated with the towing vehicle for generating brake pressure setpoint value signals for at least one electro-pneumatic pressure control module of the towing vehicle as a function of the brake request signal, a data link between the towing vehicle and the trailer, at least one electro-pneumatic pressure control module associated with the trailer for controlling a trailer brake pressure, in which the data link is for direct communication between the towing vehicle brake control unit and the at least one electro-pneumatic pressure control module of the trailer, and in which the towing vehicle brake control unit and the data link are for directly inputting control signals into the at least one pressure control module of the trailer for generating the trailer brake pressure at least as a function of the brake request signal. ## Claims ### Claim 1 An electronically controlled braking device of a towing vehicle-trailer combination, comprising: a generating arrangement to generate at least one brake request signal; an electronic towing vehicle brake control unit associated with the towing vehicle for generating brake pressure setpoint value signals for at least one electro-pneumatic pressure control module of the towing vehicle as a function of the brake request signal; a data link between the towing vehicle and the trailer; at least one electro-pneumatic pressure control module associated with the trailer for controlling a trailer brake pressure; and a braking value sensor to generate the at least one brake request signal as a function of a driver command; wherein the data link is for direct communication between the towing vehicle brake control unit and the at least one electro-pneumatic pressure control module of the trailer, and wherein the towing vehicle brake control unit and the data link are for directly inputting control signals into the at least one electro-pneumatic pressure control module of the trailer for generating the trailer brake pressure at least as a function of the brake request signal, so that no electronic trailer vehicle brake control unit is needed since the control signals are directly input from the electronic towing vehicle brake control unit into the at least one pressure control module of the trailer. ### Claim 2 (depends on 1) The electronically controlled braking device of claim 1, wherein the braking value sensor (FBM) generates at least one pneumatic and at least one electrical brake request signal. ### Claim 3 (depends on 2) The electronically controlled braking device of claim 2, wherein the at least one pneumatic brake request signal is directly input into the at least one pressure control module of the trailer via at least one coupleable pneumatic control pressure line between the towing vehicle and the trailer. ### Claim 4 (depends on 3) The electronically controlled braking device of claim 3, further comprising: a device for monitoring the pressure in at least one of the coupleable pneumatic lines. ### Claim 5 (depends on 4) The electronically controlled braking device of claim 4, wherein the towing vehicle brake control unit detects a coupling of the data link and, following the coupling of the data link, directly inputs control signals into the at least one pressure control module of the trailer. ### Claim 6 (depends on 4) The electronically controlled braking device of claim 4, wherein a data link between the towing vehicle and the trailer is coupleable. ### Claim 7 (depends on 2) The electronically controlled braking device of claim 2, wherein a brake pressure from a compressed air reservoir of the towing vehicle is directly input into the at least one pressure control module of the trailer via at least one coupleable brake pressure line between the towing vehicle and the trailer. ### Claim 8 (depends on 7) The electronically controlled braking device of claim 7, wherein the towing vehicle brake control unit detects a coupling of the data link and, following the coupling of the data link, directly inputs control signals into the at least one pressure control module of the trailer. ### Claim 9 (depends on 7) The electronically controlled braking device of claim 7, wherein a data link between the towing vehicle and the trailer is coupleable. ### Claim 10 (depends on 1) The electronically controlled braking device of claim 1, wherein the towing vehicle brake control unit and the data link for directly inputting control signals into the at least one pressure control module of the trailer are used to generate the trailer brake pressure in dependence on regulating or control functions, which include at least one of a differential slip control, an antilock braking control (ABS), an electronic stability control (ESP), a wear control, and a load-dependent braking force distribution (ALB). ### Claim 11 (depends on 1) The electronically controlled braking device of claim 1, wherein the towing vehicle brake control unit detects a coupling of the data link and, following the coupling of the data link, directly inputs control signals into the at least one pressure control module of the trailer. ### Claim 12 (depends on 1) The electronically controlled braking device of claim 1, wherein a data link between the towing vehicle and the trailer is coupleable.