摘要:
In a hydraulic brake system which is appropriate for active braking operations, the condition that at least one of the low-pressure accumulators is completely emptied during active braking without the suction line from the suction side of the return pump to the brake line being open has to be prevented. Therefore, the current consumption and/or the rotational speed of the drive motor of the return pumps is sensed and evaluated. When the pump idles and the low-pressure accumulator is empty, the rotational speed rises and the current consumption drops. This signal is used to open an electrically operated change-over valve in the corresponding suction line. In addition, a memorized pattern can ensure that the electrically operated change-over valve is open already shortly before exhaustion of the low-pressure accumulator, with the result that the low-pressure accumulator is prevented from being completely emptied.
摘要:
Disclosed is a brake system of the ‘brake-by-wire’ type for actuating a motor vehicle brake system having a brake booster which is operable in response to the driver's input by a brake pedal and to an electronic regulating and control unit. A device is provided to decouple a force-transmitting connection between the brake pedal and the brake booster in the ‘brake-by-wire’ operating mode. The electronic regulating and control unit (7) includes a control circuit for controlling the travel (SDs) covered by the output member (20) of the brake booster (3), the nominal value (SDsnominal) of the travel (SDs) covered by the output member (20) of the brake booster (3) is calculated corresponding to the actuating travel (SBp) of the brake pedal (1), and a monitoring module (24) is provided which, in the case of a fault such as the inclusion of air or brake circuit failure, performs a partial compensation of the extension of the travel (SDs) covered by the output member (20) of the brake booster (3), which extension is caused by the fault.
摘要翻译:公开了一种用于致动具有制动助力器的机动车辆制动系统的制动系统,其可响应于驾驶员通过制动踏板的输入和电子调节和控制单元而操作。 提供了一种装置,用于以“线控制动”操作模式将制动踏板和制动助力器之间的力传递连接分离。 电子调节和控制单元(7)包括控制电路,用于控制由制动助力器(3)的输出构件(20)所覆盖的行程(S SUB),标称值(S < 根据制动助力器(3)的输出构件(20)所覆盖的行程(S SUB D S / SUB)的SUB> Dsnominal SUB>对应于致动行程(S B B (1)的制动踏板(1),并且提供监视模块(24),在诸如包含空气或制动器电路故障的故障的情况下,执行部分补偿 由制动助力器(3)的输出构件(20)所覆盖的行程(S SUB),该延伸是由故障引起的。
摘要:
In a method, which is intended for a motor vehicle with a regenerative and an anti-lock conventional brake system (ABS) and is used for coordinating the application of the regenerative and the anti-lock system, the regenerative brake system is switched off upon entry into an ABS control, however, upon termination of the ABS control or ABS control phase, regenerative braking is admitted again in dependence on the respective driving situation and/or criteria representative of the brake demand and the instantaneous coefficient of friction, in a modified form as compared to the regenerative braking operation prior to the entry into the ABS control mode.
摘要:
Disclosed is a method for controlling a regenerative brake system with a number of friction brakes (F) and an electro-regenerative brake (R), whose total deceleration is composed of deceleration components of the brakes, and the actual deceleration components are desired to correspond to the nominal deceleration components as exactly as possible. A control unit is used to change the ratio of the nominal deceleration components of a number of brakes (R, F) relative to each other by determining a correction value (k1, k2) for a number of the brakes based on the quantities of efficiency w of a number of brakes representing the ratio between the actual deceleration (aactual) and the nominal deceleration (anominal), which correction value is applied to the nominal deceleration (anominal) of these brakes.
摘要:
In a method of operating an electromechanically actuatable pneumatic brake booster, an electromagnet which actuates a sealing seat of its control valve is energized in an interval by a short current pulse of maximum current strength with a subsequent ramp-like current rise, and the current being furnished to the electromagnet is decreased when a fixed value of the pressure that prevails in a master brake cylinder connected downstream of the brake booster is reached. When the hydraulic pressure introduced into the master brake cylinder reaches a nominal value, the current being furnished to the electromagnet is supplied by a pressure controller which maintains the hydraulic pressure constant.
摘要:
A method of controlling a brake system of an all-wheel driven motor vehicle, which includes an electro-regenerative brake and a number of friction brakes such that a total brake torque comprises brake torque components of the friction brakes and of the electro-regenerative brake; the brake torque of the electro-regenerative brake is subdivided between the front axle and rear axle in predetermined ratios. The brake torque generated by the electro-regenerative brake is limited to such an extent that the brake slip of one axle of the motor vehicle does not exceed a selectable maximum value.