Patent ID: 9033429
Filing Date: 2015-05-19
Classification: B60T

Abstract:
1. A brake control device for a brake system comprising a front-wheel hydraulic circuit which controls a fluid pressure of a brake fluid supplied to a front-wheel-side braking part; a rear-wheel hydraulic circuit which controls a fluid pressure of a brake fluid supplied to a rear-wheel-side braking part; and an electrically-operated pump which pressurizes the brake fluid of at least one of the front-wheel hydraulic circuit and the rear-wheel hydraulic circuit, wherein the brake control device is configured to perform an interlocking brake control, the interlocking brake control comprising a control wherein when braking is applied to a first one of the front-wheel-side braking part and the rear-wheel-side braking part via a user input, braking is applied to a second one of the front-wheel-side braking part and the rear-wheel-side braking part via the electrically operated pump, wherein the braking applied to the second one is at least partially dependent on the braking applied to the first one, and wherein the control device is configured to apply an anti-lock brake control to at least one of the front-wheel-side braking part and the rear-wheel-side braking part, wherein the brake control device includes a usual voltage mode where the interlocking brake control and the anti-lock brake control are performed when a voltage of electric power supplied to the brake control device is greater than or equal to a first voltage, and a low voltage mode wherein the interlocking brake control is stopped and the anti-lock brake control is performed so that an interval of an intermittent pressure increase of the brake fluid supplied to the first one of the front-wheel-side braking part or the rear-wheel-side braking part is prolonged compared to the usual voltage mode when the voltage of the electric power supplied to the brake control device is greater than or equal to a second voltage and less than the first voltage, and an operation mode is changed over from the usual voltage mode to the low voltage mode when it is determined that the voltage of the electric power supplied to the brake control device becomes lower than the first voltage.