BRAKING CONTROL DEVICE

摘要

The braking control device for controlling a master cylinder device includes a housing, an output piston, an input piston, a separation chamber opening and closing portion, and a driving hydraulic pressure generating portion, and is provided with an operation control for controlling the master cylinder device in an operation force operating state (regulator mode) in which the output piston is driven by operation force on a brake operation member and in a driving hydraulic pressure operating state (linear mode) in which the output piston is driven by driving hydraulic pressure from the driving hydraulic pressure generating portion; a brake operation judgment portion for judging the presence or absence of a brake operation and the probability thereof and a state transition limiter for limiting at least one of state transitions between the operating states when the presence of the brake operation and possibility thereof is determined.

主权项

1. A braking control device for controlling a master cylinder device which includes:
a tubular housing, a front side of which is closed; an output piston provided within the housing so that a pressure chamber for pressurizing an operation fluid to be supplied to a hydraulic brake device provided at each vehicle wheel is formed at a front side of the output piston within the housing and defined by the output piston; an input piston provided rearward of the output piston within the housing so that a separation chamber is formed at a rear side of the output piston, a rear end portion of the input piston being connected to a brake operation member and the input piston being movable in response to an operation force applied to the brake operation member; a separation chamber opening and closing portion which changes over a state of the separation chamber between an open state where the operation fluid can flow in or out from the separation chamber and a closed state where the operation fluid cannot flow in or out from the separation chamber; and a driving hydraulic pressure generating portion for generating a driving hydraulic pressure in a driving hydraulic pressure chamber defined by the housing and the output piston, wherein the braking control device includes: an operation control means which controls the master cylinder device to be in an operation force operating state, where the output piston is driven together with the input piston by the operation force to have the separation chamber to be in the closed state by the separation chamber opening and closing portion and to be in a driving hydraulic pressure operating state, where the separation chamber is in the open state by the separation chamber opening and closing portion to drive the output piston by generating a driving hydraulic pressure in response to an operation amount of the brake operation member in the driving hydraulic pressure chamber by the driving hydraulic pressure generating portion; a brake operation judgment means for judging at least whether or not a braking operation by the brake operation member is being performed, or whether or not the braking operation will be performed within a predetermined time period; and a state transition limiting means for limiting at least one of a state transition from the operation force operating state to the driving hydraulic pressure operating state of the master cylinder device and a state transition from the driving hydraulic pressure operating state to the operation force operating state, when the brake operation judgment means judges at least that the braking operation by the brake operation member is being performed or that the braking operation will be performed within the predetermined time period.