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1. (WO2018108450) MODULAR-SYSTEM-OPTIMIZED PNEUMATIC BRAKE BOOSTER

Pub. No.:    WO/2018/108450    International Application No.:    PCT/EP2017/079609
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Sat Nov 18 00:59:59 CET 2017
IPC: B60T 13/567
Applicants: CONTINENTAL TEVES AG & CO. OHG
Inventors: FALLER, Jürgen
Title: MODULAR-SYSTEM-OPTIMIZED PNEUMATIC BRAKE BOOSTER
Abstract:
The invention relates to a pneumatic brake booster (1), having a negative pressure chamber (3) and a working chamber (4) in a booster housing (2), which are separated from each other by an elastic diaphragm (5), wherein in some regions the diaphragm lies against a diaphragm plate (6), which can be slid axially between a zero position (N) and a maximum stroke (M), wherein an axial distance between the zero position and the maximum stroke defines a stroke range (H) of the brake booster, wherein the diaphragm has a rolling fold (7), which rolls on a rolling region (8) on an inner wall of the booster housing during the sliding of the diaphragm plate. The aim of the invention is to provide a solution in which a modular system should be made more efficient for a plurality of stroke ranges and the loss of efficiency should be minimized or avoided. This aim is achieved, according to the invention, in that the booster housing has, in the rolling region, an inclined, conical section (9) having a cone angle (ɑ) greater than or equal to 8° and an axial extent (A) > 1/3 * stroke range (H).