Patent ID: 9452747
Filing Date: 2016-09-27
CPC Classification: B60T

Claim Text:
1. A vehicle braking control device, comprising: a brake pedal configured to be operated; an input member configured to be moved forward and backward by the operation of the brake pedal; an assist member configured to be moved with respect to a direction of movement of the input member; a force-multiplying actuator configured to move the assist member forward and backward, and to vary the degree of relative displacement between the input member and the assist member; and a control unit programmed to set, on the basis of an amount the brake pedal is operated, a target value of the degree of relative displacement between the input member and the assist member, and to control the force-multiplying actuator so that the degree of relative displacement matches the target value, the input member, in response to being moved, generating a force-multiplied hydraulic brake pressure in a master cylinder by an assist thrust imparted to the assist member a reference map preset with a characteristic representing the relationship between an amount of fluid consumed by braking and a master cylinder pressure; an amount-of-fluid-consumed-in-braking-estimating device configured to calculate an estimated amount of fluid consumed by braking, which is the amount of fluid consumed in braking for implementing a braking force based on the amount the brake pedal is operated; and a master-cylinder pressure-detection device configured to detect an actual master-cylinder pressure, the control unit, when a characteristic representing the relationship between the estimated amount of fluid consumed by braking and the actual master-cylinder pressure has a difference with regard to the characteristic preset in the reference map, being programmed to correct the target value of the degree of relative displacement between the input member and the assist member in a direction in which the difference between the characteristic representing the relationship between the estimated amount of fluid consumed by braking and the actual master-cylinder pressure and the characteristic preset in the reference map is reduced.