Master cylinder, particularly a tandem master cylinder with lower operating noise and braking system comprising such a master cylinder
A master cylinder comprising a body of longitudinal axis (X) pierced with a bore of axis (X) for receiving a piston ( 10 ). The piston ( 10 ) comprising a piston head ( 32 ) and a piston shank ( 34 ) connected to the piston head ( 32 ) via a shoulder ( 36 ). The piston shank ( 34 ) is guided by a gu...
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| Main Authors | , , , , , , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
25.09.2003
|
| Online Access | Get full text |
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| Summary: | A master cylinder comprising a body of longitudinal axis (X) pierced with a bore of axis (X) for receiving a piston (
10
). The piston (
10
) comprising a piston head (
32
) and a piston shank (
34
) connected to the piston head (
32
) via a shoulder (
36
). The piston shank (
34
) is guided by a guide ring (
38
) mounted fixedly in the piston body with the piston head (
32
) coming at rest to bear against a thrust ring (
42
) via the shoulder (
36
) in the bore. The piston (
10
) delimits a work chamber (
16
) within the bore that is in communication with a supply chamber (
14
) containing brake fluid in a rest position and with the brakes by way of a valve device (
18
) arranged in the body of the piston (
10
) during a brake application. A supply duct (
24
) has a first longitudinal end (
37
) that is sealingly connected with a brake fluid reservoir and a second longitudinal end (
39
) at the opposite end to shank (
34
) that faces the thrust ring (
42
) to allowing the supply chamber (
14
) to be supplied with brake fluid via a resupply duct (
44
) and hydraulic damping means (
48
) for damping the return of the piston head to bear against the thrust ring (
42
). The hydraulic damping means (
48
) comprise a means (
41
) for shutting off, in a practically sealed manner, the second longitudinal end of the supply duct (
24
) and at least one exhaust duct (
50
) through which the brake fluid can flow at a reduced flow rate from the supply chamber (
14
) to the supply duct (
24
). |
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