| 摘要 |
The invention relates to a brake actuation unit for actuating a 'brake-by-wire' type brake system for a motor vehicle comprising a brake booster operable both by means of a brake pedal mounted on a shaft and by means of an electronic control unit depending on the driver's request, with means being provided to decouple a force-transmitting connection between the brake pedal and the brake booster in the 'brake-by-wire' operating mode, means to detect a deceleration request of the driver, as well as a pedal travel simulator which interacts with the brake pedal and is formed of a simulator spring, which is arranged in terms of effect between a force-transmitting part connected to the brake pedal and a simulator housing, which is mounted on the shaft by means of two bearings. It is arranged according to the invention that the simulator housing ( 22 ) includes a cylindrical area ( 26 ) for the accommodation of the two bearings ( 27, 28 ). This measure renders it possible to reduce the deformations that occur during actuation of the pedal travel simulator to a great extent.
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