Brake-by-wire type braking system for motorcycles

A braking system for a motorcycle, comprising:

• at least one first braking device operatively connected to a first wheel of the motorcycle, and provided with a first hydraulic supply circuit,
• a first electric actuator having first motor means, electrically or electro-mechanically actuated and operatively connected to a first electrically or electro-mechanically actuated piston fluidically connected to said first hydraulic supply circuit,
• at least one first interface port operatively connected to a first hydraulic device provided with a first manually actuated piston,
• wherein the first manually actuated piston is subdivided into a first direct piston, directly connected to the first interface port, and a first indirect piston, in series with the first direct piston, and connected to the first direct piston by interposition of a first return spring,
• the first indirect piston being hydraulically connected to said first hydraulic supply circuit through a first by-pass duct, and arranged in series, upstream, with the first electrically or electro-mechanically actuated piston,
• wherein the braking system comprises a hydraulic fluid reservoir fluidically connected to the first hydraulic device by an upstream connection duct of the first indirect piston and a downstream connection duct of the first indirect piston, and
• wherein the braking system is provided with a processing and control unit, operatively connected to said first electric actuator, and programmed so that:
• in standard operation, upon actuation of the first interface port, the first electrically or electro-mechanically actuated piston translates so as to occlude the first by-pass duct, fluidically disconnect the first manually actuated piston from the first hydraulic supply circuit, and simultaneously operate the at least one first braking device,
• wherein the braking system further comprises a second manually actuated device, separate from the first interface port, and operatively connected to a second hydraulic device provided with a second manually operated piston, wherein the second manually operated piston is hydraulically connected to said first indirect piston through a second by-pass duct, and is arranged in series, upstream, with the first indirect piston which is in turn fluidically connected to the first hydraulic supply circuit through which first the indirect piston operates the at least one first braking device and/or a second braking device.

A braking system for a motorcycle, comprising:

• at least one first braking device operatively connected to a first wheel of the motorcycle, and provided with a first hydraulic supply circuit,
• a first electric actuator having first motor means, electrically or electro-mechanically actuated and operatively connected to a first electrically or electro-mechanically actuated piston fluidically connected to said first hydraulic supply circuit,
• at least one first interface port operatively connected to a first hydraulic device provided with a first manually actuated piston,
• wherein the first manually actuated piston is subdivided into a first direct piston, directly connected to the first interface port, and a first indirect piston, in series with the first direct piston, and connected to the first direct piston by interposition of a first return spring,
• the first indirect piston being hydraulically connected to said first hydraulic supply circuit through a first by-pass duct, and arranged in series, upstream, with the first electrically or electro-mechanically actuated piston,
• wherein the braking system comprises a hydraulic fluid reservoir fluidically connected to the first hydraulic device by an upstream connection duct of the first indirect piston and a downstream connection duct of the first indirect piston, and
• wherein the braking system is provided with a processing and control unit, operatively connected to said first electric actuator, and programmed so that:
• in standard operation, upon actuation of the first interface port, the first electrically or electro-mechanically actuated piston translates so as to occlude the first by-pass duct, fluidically disconnect the first manually actuated piston from the first hydraulic supply circuit, and simultaneously operate the at least one first braking device,
• wherein the braking system further comprises:
• at least one second braking device operatively connected to a second wheel of the motorcycle, and provided with a second hydraulic supply circuit, fluidically separate from the first hydraulic supply circuit,
• a second electric actuator having second electric motor means operatively connected to a second electrically or electro-mechanically actuated piston fluidically connected to said second hydraulic supply circuit,
• at least one second manually actuated device operatively connected to a second hydraulic device provided with a second manually actuated piston,
• wherein the second manually actuated piston is hydraulically connected to said second hydraulic supply circuit via a second by-pass duct, and is arranged in series, upstream, with the second electrically or electro-mechanically actuated piston, and
• wherein the processing and control unit is operatively connected to the second interface port and to said second electric actuator and programmed so that:
• in standard operation, upon actuation of the second interface port, the second electrically or electro-mechanically actuated piston translates so as to occlude the second by-pass duct, fluidically disconnect the second manually actuated piston from the second hydraulic supply circuit, and actuate the at least one second braking device.