E149 – Integrated 1-Box Architecture
with Plunger/DAP Pressure Supply
Compact integrated brake module with parallel-axis arrangement of pressure supply unit (plunger or double-acting piston) and master cylinder — incorporating electronics, valve control, connector geometry, and advanced drive integration into a single modular housing. 9 invention concepts · 4 CN utility models · 29 family members · DE · EP · US · JP · KR · CN · IN
| Applicant | IPGATE AG, Churerstrasse 160a, 8808 Pfäffikon (CH) |
| Inventors | Heinz Leiber, Dr. Thomas Leiber, C. Hecker |
| Priority / Filing Date | March 21, 2016 (DE 10 2016 105 232.9) · PCT: March 20, 2017 |
| PCT Application | PCT/EP2017/056567 (WO 2017/162480 A1) |
| Technology | Integrated module — parallel arrangement of pressure supply device (plunger or DAP) and piston-cylinder unit (master cylinder) in a compact, modular 1-box housing with integrated ECU, HCU, connector geometry, and ball-screw drive variants |
| Innovations | 9 independent device inventions (patent) + 4 device inventions (CN utility model) · 29 family members across 8 jurisdictions |
Compact 1-Box Integration of
Pressure Supply & Master Cylinder
Patent family E149 describes an integrated 1-box architecture for hydraulic actuation systems — combining a pressure supply unit (plunger or double-acting piston) and a piston-cylinder unit (master cylinder) in a compact, modular housing with integrated electronics and hydraulic valve control.
The core idea is the parallel arrangement of the pressure supply device (PSU) and master cylinder (HZ/KZE) along parallel — but vertically spaced — axes within a single housing. This approach deliberately differs from vertical integration architectures (e.g., MKC1) and serves as the foundation for an integrated 2-pressure supply unit suited to redundant brake-by-wire systems for autonomous driving.
The family is one of the most extensive in the IPGATE portfolio: 29 family members in 8 jurisdictions (DE, EP, US, JP, KR, CN, IN), covering 9 independent patent inventions and 4 Chinese utility model inventions. The scope spans from the fundamental parallel-axis architecture through specific connector geometries, bevel-gear sensor integration, axially compact ball-screw units, and rotor-integrated drive designs — all protecting key aspects of the modular integrated brake module.
From Functional Units to Physical Integration
While the predecessor families E147 and E148 optimized brake pressure control and pressure supply as functional units — E147 addressing valve-side architecture for wheel-selective pressure regulation, E148 addressing the supply side with a double-acting piston — E149 takes the next step: physical integration of all components into a single housing.
Existing integrated designs — such as the MKC1 — typically arrange the pressure supply coaxially or vertically relative to the master cylinder. This constrains the geometric freedom for valve placement, connector orientation, and ECU integration, and limits the path toward dual-pressure-supply redundancy required by automated driving regulations.
This 1-box concept also applies beyond braking: E149 includes an invention covering an integrated clutch and transmission actuator using the same parallel-axis architecture — making E149 relevant for electrified powertrain actuation systems as well.
Nine Patent + Four Utility Model Inventions
The 13 inventions of E149 are grouped into four clusters: core parallel-axis architecture, connector and compact-housing design, advanced rotor-integrated drive, and Chinese utility model variants covering independent architectural concepts.
KSI: Bevel gear sensor — rotor movement transmitted via bevel gear to sensor target on system board.
IKGA: Integrated clutch/transmission actuator using the same parallel-axis configuration for electrified systems.
AKE: Axially compact ball-screw unit — planetary spindle drive, motor below HZ longitudinal axis, continuous casting housing for KZE and PSU.
Pull-out direction: HSI extension — plug additionally extractable horizontally toward the KZE axis.
SIAH (stator): Four-point bearing adjacent to motor stator; PSU and master cylinder in continuous casting housing.
SIAH (motor): Four-point bearing pressed into motor housing; continuous casting integration.
SIA (CN2): Sandwich architecture — PSU/KZE on one side of HCU, ECU on the opposite side.
SIAE (CN3): Motor adjacent to ECU at front/side.
KAEA (CN4): Motor coaxial to PSU piston, housing directly adjacent to ECU.
All 13 Inventions — Descriptions & Keywords
9 independent patent inventions (all Device) plus 4 Chinese utility model inventions (all Device). All claims relate to physical integration architecture of the 1-box brake module.
| Ref. · Patent No. | Type | Description | Keyword |
|---|---|---|---|
| E149WOUS-A1 US 10,933,853 B2 |
Device | Actuator with double-stroke piston pump and piston-cylinder unit, axes arranged parallel and vertically spaced apart. Solenoid valves perpendicular to the PSU axis, horizontal plug connection to the ECU. Integrated valve arrangement and electronics housing. | PIB · Parallel axes · Horizontal plug |
| E149WOUS-A24 US 10,933,853 B2 |
Device | Actuating device with parallel axes; rotor movement of the electric motor transmitted to a sensor target via a bevel gear drive. Evaluation element integrated on the system board in the ECU. | KSI · Bevel gear · Sensor target · ECU board |
| E149WOUS-A25 US 10,933,853 B2 |
Device | Actuating device with parallel axes, configured as an electrified clutch actuator with transmission actuator, or as a clutch actuator for at least one clutch. Expands scope of the parallel architecture to electrified powertrain actuation. | IKGA · Clutch actuator · Transmission · Electrified |
| E149WOUS1-A1 US 11,554,765 B2 |
Device | Actuating device with connecting element (plug) in horizontal plug-in direction above the piston-cylinder unit and above the first housing, pluggable into the control unit. Enables straightforward assembly and serviceability. | HSI · Horizontal plug · Above KZE |
| E149WOUS2-A1 US 11,897,439 B2 |
Device | Actuating device with double-stroke piston pump and planetary gear spindle drive. Electric motor positioned below the HZ longitudinal axis. Common continuous casting housing for KZE and PSU — axially compact configuration. | AKE · Planetary spindle · Continuous casting · Motor below HZ |
| E149WOUS2-A13 US 11,897,439 B2 |
Device | HSI extension: connecting element horizontally above KZE, additionally extractable in horizontal direction toward the KZE axis and away from the control unit. Enables withdrawal toward the center of the vehicle. | HSI extension · Pull-out direction · Vehicle center |
| E149WOUS3-A1 US 12,325,389 B2 |
Device | Pressure supply with ball screw drive (screw + nut) inside the rotor. Four-point bearing absorbs axial and radial forces. Screw or nut connected to rotor with torque lock. | RIKSA · Ball screw in rotor · Four-point bearing |
| E149WOUS3-A9 US 12,325,389 B2 |
Device | Ball screw drive with four-point bearing positioned adjacent to the stator of the electric motor. PSU and master cylinder integrated into a continuous casting housing. | SIAH stator · Four-point bearing · Continuous casting |
| E149WOUS3-A16 US 12,325,389 B2 |
Device | Ball screw drive with four-point bearing pressed into the motor housing. PSU and master cylinder integrated into a continuous casting housing. | SIAH motor · Bearing in motor housing · Continuous casting |
| E149CN1 CN 207617706 U |
Device (UM) | Broadest scope: actuating device with parallel axes of piston-cylinder unit (10) and pressure supply device (11). No further limiting features — widest possible protection for the parallel-axis concept. | PDH · Parallel axes · Broadest scope |
| E149CN2 CN 208233037 U |
Device (UM) | Sandwich architecture: PSU and KZE on one side of the valve assembly (HCU), ECU on the opposite side. All main components arranged in series in a sandwich configuration. | SIA · Sandwich · HCU central |
| E149CN3 CN 207860167 U |
Device (UM) | Motor (M) positioned adjacent to the electronic control unit (ECU) at the front and/or side. Direct motor-ECU coupling without external cabling between modules. | SIAE · Motor beside ECU · Direct coupling |
| E149CN4 CN 207864604 U |
Device (UM) | Motor (M) arranged coaxially with the PSU piston; motor housing directly adjacent to ECU. Parallel axes of KZE and PSU. Highly integrated mechatronic unit. | KAEA · Coaxial motor · Adjacent ECU |
Jurisdictions & Status
All known members of the E149 patent family as of February 2026. 29 total family members across 8 jurisdictions (DE, EP, US, JP, KR, CN, IN).
| File No. | Country | Status | Type | Registration No. | Filed | Grant No. | Granted |
|---|---|---|---|---|---|---|---|
| E149DE | DE | Pending | Patent | 102016105232.9 | Mar. 21, 2016 | — | — |
| E149WOEP | EP | Granted | Patent | 17712743.8 | Mar. 20, 2017 | EP 3433147 B1 | Nov. 9, 2022 |
| E149WOEPDE | DE | Granted | Patent (via EP) | 502017014066.1 | Mar. 20, 2017 | EP 3433147 B1 | Nov. 9, 2022 |
| E149WOEPFR | FR | Granted | Patent (via EP) | 17712743.8 | Mar. 20, 2017 | EP 3433147 B1 | Nov. 9, 2022 |
| E149WOEPGB | GB | Granted | Patent (via EP) | 17712743.8 | Mar. 20, 2017 | EP 3433147 B1 | Nov. 9, 2022 |
| E149WOEPNL | NL | Granted | Patent (via EP) | 17712743.8 | Mar. 20, 2017 | EP 3433147 B1 | Nov. 9, 2022 |
| E149WOUS | US | Granted | Patent | 16/086,896 | Mar. 20, 2017 | US 10,933,853 B2 | Mar. 2, 2021 |
| E149WOJP | JP | Granted | Patent | 2018-549513 | Mar. 20, 2017 | JP 7051698 B2 | Apr. 1, 2022 |
| E149WOKR | KR | Granted | Patent | 10-2018-7030350 | Mar. 20, 2017 | KR 102346057 B1 | Dec. 28, 2021 |
| E149WOCN | CN | Granted | Patent | 201780019150.9 | Mar. 20, 2017 | CN 108778869 B | Aug. 12, 2022 |
| E149CN1 | CN | Registered | Utility Model | 201720273834.9 | Mar. 20, 2017 | CN 207617706 U | — |
| E149CN2 | CN | Registered | Utility Model | 201720274215.1 | Mar. 20, 2017 | CN 208233037 U | — |
| E149CN3 | CN | Registered | Utility Model | 201720275052.9 | Mar. 20, 2017 | CN 207860167 U | — |
| E149CN4 | CN | Registered | Utility Model | 201720275054.8 | Mar. 20, 2017 | CN 207864604 U | — |
| E149WOUS1 | US | Granted | Divisional | 17/153,186 | Mar. 20, 2017 | US 11,554,765 B2 | Jan. 17, 2023 |
| E149WOJP1 | JP | Granted | Divisional | 2022-055982 | Mar. 20, 2017 | JP 7586849 B2 | Nov. 11, 2024 |
| E149WOKR1 | KR | Granted | Divisional | 10-2021-7042737 | Mar. 20, 2017 | KR 102457126 B1 | Oct. 17, 2022 |
| E149WOEP1 | EP | Filed | Divisional | 22205854.7 | Mar. 20, 2017 | — | — |
| E149WOUS2 | US | Granted | Divisional | 18/411,517 | Mar. 20, 2017 | US 12,325,389 B2 | Jun. 10, 2025 |
| E149WOEP2 | EP | Pending | Divisional | 24162123.4 | Mar. 20, 2017 | — | — |
| E149WOJP2 | JP | Granted | Divisional | 2024-068356 | Mar. 20, 2017 | JP 7781208 B2 | Nov. 27, 2025 |
| E149WOUS3 | US | Granted | Divisional | 18/074,192 | Mar. 20, 2017 | US 11,897,439 B2 | Feb. 13, 2024 |
| E149WOJP3 | JP | Filed | Divisional | 2025-203215 | Mar. 20, 2017 | — | — |
