US 12,168,430 B2
Trailer brake control system
Philipp Kirmaier, Marktoberdorf (DE); Richard Heindl, Marktoberdorf (DE); and Tobias Albrecht, Marktoberdorf (DE)
Assigned to AGCO International GmbH, Neuhausen (CH)
Appl. No. 17/757,399
Filed by AGCO International GmbH, Neuhausen (CH)
PCT Filed Dec. 1, 2020, PCT No. PCT/IB2020/061317
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/123984, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 1918835 (GB), filed on Dec. 19, 2019.
Prior Publication US 2023/0009316 A1, Jan. 12, 2023
Int. Cl. B60T 7/20 (2006.01); B60T 8/17 (2006.01)
CPC B60T 7/20 (2013.01) [B60T 8/1701 (2013.01); B60T 2250/00 (2013.01); B60T 2260/04 (2013.01); B60T 2270/413 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A trailer braking system, comprising:
a vehicle having a continuously variable hydrostatic transmission, wherein the transmission includes a first pressure sensor arranged to measure a fluid pressure (PH, PSYS) at a predetermined point within the transmission, and a rotation sensor arranged to determine a rotation direction of a predetermined component in a driveline of the vehicle;
a trailer coupled for towing by the vehicle, the trailer having at least two wheels with trailer brakes operable from the vehicle; and
an electronic control unit (ECU) coupled to the first pressure sensor and to the rotation sensor, the ECU being configured to determine whether a PUSH condition exists based on a combination of a first output signal from the first pressure sensor indicative of fluid pressure at the predetermined point within the transmission and a second output signal from the rotation sensor indicative of the rotational direction of the predetermined component within the driveline of the vehicle, and further configured to operate the trailer brakes in response to a determination that a PUSH condition exists.