| 摘要 |
PURPOSE:To enable the slip prevention control in acceleration by connecting a changeover valve to a normal brake fluid pressure source and providing a shutoff valve to close a fluid flow between a master cylinder and a wheel cylinder, and a volume control valve for increasing of decreasing brake fluid pressure. CONSTITUTION:When an excessive slip is judged to have occurred on driving wheels due to accelerating or braking, an order signal is sent from a control means (i) to a changeover valve (f) and a control valve (g), thereby actuating the said valve (f) and applying fluid pressure from a hydraulic source (e) to a shutoff valve (c) for disconnecting a flow between a master cylinder (a) and a wheel cylinder (b). Also, the control valve (g) is operated and the fluid pressure from the hydraulic source (e) is supplied to a volume control valve (d) via the said valve (g). The said valve (d) works to reduce or increase the pressure of a brake fluid in the wheel cylinder (b). Consequently, the braking force of the driving wheels is adjusted and their slip is prevented. |
