| 摘要 |
An inexpensive hydraulic brake system for a vehicle including an antilock device, by means of which brake pressures in front wheel brakes and rear wheel brakes of a four-wheeled vehicle that are connected to diagonal brake circuits can be changed to a large extent independently of one another in order to reduce or eliminate the danger of wheel locking. The antilock device should have one return feed pump per brake circuit. The brake system is equipped with the antilock device with a total of six electrically controllable valves. In each of the brake circuits a first valve is disposed between the master cylinder and a front wheel brake and a second valve is disposed between the master cylinder and the rear wheel brake and a third valve is disposed between the front wheel brake and an inlet of each of the return feed pumps. The inlets of the return feed pumps are respectively connected indirectly to the rear wheel brakes by means of check valves, which can be opened in the direction of the inlets of the return feed pumps. The antilock device is inexpensively constructed and in antilock operation, for example on an icy road surface, rear wheel brake pressures can be higher than front wheel brake pressures in order to improve the braking action.
|
