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IPGATE AG · IP Portfolio B · B2
| Inventors | Heinz Leiber, Dr. Thomas Leiber |
| Priority | March 2015 |
| Portfolio | IP Portfolio B · B2 |
| Innovations | 5 independent inventions |
| Jurisdictions | US granted, EP (DE) granted, CN granted, DE utility model registered |
Patent family E145 claims a complete brake system integrating the second-generation HDS (MUX 2.0) pressure control into a floating piston master cylinder architecture — extending the scope beyond pure control methods to cover the combined brake system and self-diagnosis.
The E145 builds on two predecessor patent families: E102 defines the basic principle of highly dynamic pressure control (HDS generation 1) — volume control with a plunger as a bidirectional control element and PWM valve modulation for wheel-selective pressure regulation. E141 (used as priority for E145) expands the control system in multiple dimensions: pressure reduction via outlet valves as an additional degree of freedom, three pump types, and a solution to the volume problem with single-stroke pistons.
While E141 protects the control method (HDS 2) in isolation, E145 goes a decisive step further: it claims a complete brake system with a floating piston master cylinder unit in which HDS 2 (referred to as MUX 2.0) is systemically integrated. The scope of protection is therefore broader — encompassing the combination of brake system architecture and control strategy. E145 further introduces two novel THZ diagnostic methods that, for the first time, functionally monitor the mechanical return element (floating piston) during both driving and parking modes.
E145 goes a decisive step further than E141: it claims a complete brake system with a floating piston master cylinder unit in which HDS 2 (referred to as MUX 2.0) is systemically integrated. The scope of protection is therefore broader — encompassing the combination of brake system architecture and control strategy. E145 further introduces two novel THZ diagnostic methods that functionally monitor the mechanical return element (floating piston) during both driving and parking modes.
While E141 protects the HDS 2 control method in isolation, E145 claims the full integrated system. This makes E145 the commercially most comprehensive protection for HDS 2.1 implementations — covering device architecture and both diagnostic methods in four jurisdictions.
The Highly Dynamic pressure control System (HDS) is a proprietary IPGATE control strategy for electrohydraulic brake actuators. E145 implements HDS generation 2 in three pump-type variants, collectively referred to as MUX 2.0 in the context of this patent family.
The five independent inventions of E145 fall into three thematic groups: HDS 2 pressure control, THZ driving diagnosis, and THZ parking diagnosis.
Invention Overview
| Invention | Cat. | Description | Keyword |
|---|---|---|---|
| E145WOUS C1US10,688,979 B2 | Device | Floating piston brake system with HDS 2 — simultaneous volume control of the pressure supply and pressure reduction via outlet valves for wheel-specific pressure build-up/reduction in highly dynamic braking situations (ABS/ESP). | HDS 2 · Volume control · Simultaneous |
| E145WOUS C34US10,688,979 B2 | Method | Method for testing tightness and mobility of the floating piston during driving. Radial channel in the master brake cylinder, pressure difference moves the floating piston; test path profile compared with target value profile. | THZ diagnosis · Channel · Test path profile |
| E145WOUS C39US10,688,979 B2 | Method | Method for testing the floating piston in parking mode. Pressure stored in second brake circuit, reduced in first circuit, valves opened — floating piston moves due to pressure difference until pressure equalization. | THZ parking · Pressure storage · Equalization |
| E145WOCN C1CN107428325B | Device | CN equivalent of HDS 2 pressure control: brake device with floating piston master cylinder, combined volume and valve control for simultaneous highly dynamic pressure changes in the wheel brakes. | HDS 2 · Volume control · Simultaneous |
| E145WOCN C34CN107428325B | Method | CN equivalent of THZ driving diagnosis: method for testing the mobility and tightness of the floating piston via radial channel, pressure-volume curve, and comparison with a theoretical curve. | THZ diagnosis · Pressure-volume curve |
| E145WOCN C36CN107428325B | Method | High-pressure relief procedure at pressures ≥100 bar: multi-stage release via pressure relief valve, forward stroke and return stroke of the double-acting piston with pressure-volume control, followed by repositioning. | Pressure relief · ≥100 bar · Multi-stage |
| E145WOEP C1EP3271227B1 | Device | EP equivalent of HDS 2: floating piston brake system with simultaneous volume and valve control for highly dynamic pressure changes in ABS/ESP scenarios. | HDS 2 · Volume control · ABS/ESP |
Family Overview
| File No. | Country | Status | Type | Application No. | Filed | Grant No. | Granted |
|---|---|---|---|---|---|---|---|
| E145WOUS | US | Granted | Patent | 15/558,376 | Dec. 30, 2015 | US10,688,979 B2 | Jun. 23, 2020 |
| E145WOEP | EP | Granted | Patent | 15817422.7 | Dec. 30, 2015 | EP3271227B1 | Oct. 20, 2021 |
| E145WOEPDE | DE | Granted | Patent (via EP) | 15817422.7 | Dec. 30, 2015 | 502015015331.8 | Oct. 20, 2021 |
| E145WOCN | CN | Granted | Patent | 201580077961.5 | Dec. 30, 2015 | CN107428325B | May 14, 2021 |
| E145GDE | DE | Registered | Utility Model | 202015008975.5 | Dec. 30, 2015 | — | — |
Explore
Three generations of pressure control.
IBS Pressure Control History →