Method of evaluating a partially assembled brake booster

Details Method of evaluating a partially assembled brake booster Method of evaluating a partially assembled brake booster

1991-04-29

1992-08-11

Eley, Timothy V.

Metal working

Method of mechanical manufacture

During simulated operation or operating conditions

29888, 29407, B23Q 1700

Patent

active

051367696

ABSTRACT:
A method of evaluating the operational characteristics of a brake booster by simulating a brake application of partially assembled brake booster components. An input force to control valve located in a hub of a shell to create an output force which is communicated through a reaction disc to an output member. An initial operational curve corresponding to an output force is compared with a reference curve to either accepted or reject the partially assembled brake booster components. If accepted, additional components are joined to the partially assembled booster to complete the assembly. If rejected, spacers based on the operational characteristics of the reaction disc and initial operational curve are located adajcent the reaction disc to modify the communication of a pressure differential developed force to the reaction disc for the now modified partially assembled brake booster components. An input force is again applied to the control valve to simulate a second brake application. The pressure differential developed force is communicated through the spacers to produce a second operational force. A curve corresponding to the second operational force is compared with the reference curve to inform an operator to either accept or reject the modified partially assembled brake booster components. If accepted, additional components are thereafter joined to the modified partially assembled brake booster components to complete the assembly. If rejected, the modified partially assembled brake booster components are removed from the assembly line.

REFERENCES:
patent: 2863316 (1958-12-01), Abplanalp
patent: 3158930 (1964-12-01), Wesstrom et al.
patent: 3252916 (1944-07-01), Schrader
patent: 4268945 (1981-05-01), Arman et al.

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