US 12,365,324 B2
Brake system with noise-optimized valve control
Anne Seidel, Bad Homburg v. d. Höhe (DE); Holger Kollmann, Rodgau (DE); and Christian Courth, Frankfurt (DE)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Appl. No. 18/254,854
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
PCT Filed Oct. 21, 2021, PCT No. PCT/DE2021/200159
§ 371(c)(1), (2) Date May 27, 2023,
PCT Pub. No. WO2022/111768, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 10 2020 214 971.2 (DE), filed on Nov. 27, 2020.
Prior Publication US 2023/0415723 A1, Dec. 28, 2023
Int. Cl. B60T 13/68 (2006.01); B60T 8/36 (2006.01)
CPC B60T 13/686 (2013.01) [B60T 8/366 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A brake system for a motor vehicle comprising:
a hydraulic line system with at least one hydraulic valve which is normally closed;
an electric coil which is supplied with current by a final stage having analog control is provided for electrically actuating the at least one hydraulic valve; and
a computing unit is-provided-which is configured to:
determine a counterforce at least from a spring force of the hydraulic valve and the pressure difference across the hydraulic valve;
determine from the counterforce an opening force which is greater than the counterforce by a predetermined amount:
determine an associated valve opening current from the opening force; and
actuate the final stage when the hydraulic valve is switched on to provide the associated valve opening current.