摘要:
The invention relates to a valve unit (14) for an electro-pneumatic brake control device (10) for controlling a parking brake of a vehicle, wherein the valve unit (14) has at least one air-quantity-boosting valve device (64) for aerating and deaerating at least one spring brake cylinder (12) of the parking brake and at least one electrically actuable, control valve (86) for controlling the air-quantity-boosting valve device (64). In order to simplify the construction of the brake control device, the air-quantity-boosting valve device (64) and the control valve (86) are integrated in a common integral valve block (112).
摘要:
The invention relates to a pneumatic brake system 72 for a vehicle with brake cylinders 82, 84, which can be actuated with compressed air, for actuating wheel brakes, wherein a first group of wheel brakes belongs to a first brake circuit with a first compressed air storage tank 116 for providing a first stored pressure, and a second group of wheel brakes belongs to a second brake circuit with a second compressed air storage tank 130 for providing a second stored pressure, wherein at least one brake cylinder of the first brake circuit is embodied as a combined spring-store/diaphragm cylinder 84 with a spring store part 86 for providing a parking brake and a diaphragm part 88 for providing a service brake. In the event of a failure of the first brake circuit, the spring store part 86 can be deaerated in order to engage the parking brake. In order to simplify the brake system 72, a first pressure sensor 170 for measuring the first stored pressure is provided and connected to an electric control unit 80, by means of which a modulator 140 for aerating and deaerating the spring store part 86 can be controlled, wherein the control unit 80 is designed to generate an electrical control signal for an electrically actuable solenoid valve of the modulator if the value measured by the first pressure sensor 170 falls below a predetermined minimum pressure value, such that the spring store part 86 can be directly or indirectly aerated and deaerated by means of the solenoid valve 164. The invention also relates to a method for controlling a brake system of said type.
摘要:
A pneumatic vehicle brake system includes first and second groups of wheel brakes belonging, respectively, to first and second brake circuits having first and second compressed air storage tanks for providing first and second stored pressures. At least one first circuit brake cylinder is a combined spring-store/diaphragm cylinder with a spring store part for providing a parking brake and a diaphragm part for providing a service brake. If the first circuit fails, the spring store part is deaerated to engage the parking brake. A pressure sensor for measuring the first stored pressure is connected to a control unit that controls a modulator for aerating and deaerating the spring store part. The control unit generates a signal for an electrically actuatable modulator solenoid valve if the value measured by the sensor falls below a minimum value, such that the spring store part can be aerated and deaerated via the valve.
摘要:
An electrically controlled brake system 10 for a tractor is provided that is equipped with an anti-jackknifing brake that can be actuated by means of a manual operating element and that acts only on the brakes of a trailer coupled to the tractor. The operating element is an electrical element which generates an electrical signal to control a valve device by means of which the braking force of the anti-jackknifing brake can be increased.
摘要:
The invention relates to an actuating device for a parking brake of a vehicle, in particular a commercial vehicle, wherein the actuating device comprises an operating brake for driving operation and the parking brake for securing the vehicle. A first braking effect can be generated by means of the parking brake for the vehicle independently of a braking procedure for the operating brake. The actuating device comprises a first switched state, wherein the first braking effect of the parking brake cannot be provided, and comprises a second switched state, wherein the first, in particular full, braking effect and the parking brake can be provided. The actuating device further comprises a manually actuatable operating element (2, 2) for actuating the parking brake, wherein the operating element (2, 2′) comprises a plurality of travel positions (18, 20, 83, 84), wherein the actuating device can be switched to the second switched state in a first travel position (18) in the case of a released parking brake, and wherein the actuating device can be switched to the first switched state in the case of an applied parking brake. According to the invention, the actuating device can be switched to a further switched state. The invention further relates to a method for actuating said actuating device, wherein the actuating device is switched to the further switched state in response to an actuation.
摘要:
An actuating device includes a vehicle operating brake and parking brake. A first braking effect is generated by the parking brake independently of a braking procedure for the operating brake. The actuating device comprises a first switched state, wherein the first braking effect of the parking brake cannot be provided, and a second switched state, wherein the first (full) braking effect of the parking brake is provided. The actuating device further comprises a manually actuatable operating element for actuating the parking brake that comprises travel positions. The actuating device is switched to the second switched state in a first travel position when the parking brake is released, and to the first switched state when the parking brake is applied. Also, the actuating device is switchable to a further switched state. In an actuating method, the actuating device is switched to the further switched state in response to an actuation.
摘要:
A brake system for a vehicle includes a parking brake with an air-quantity-boosting-valve device for aerating and deaerating at least one spring brake cylinder of the parking brake, at least one electrically actuatable control valve for controlling the air-quantity-boosting-valve device, an electrical control device electrically coupled to the electrically actuatable control valve for controlling the electrically actuatable control valve, and an electrical actuating device coupled to the control device for actuating the parking brake. In order to be able to resort to available series-produced components, the air-quantity-boosting-valve device, the control valve, the electrical control device and the actuating device are, in each case, embodied as autonomous components arranged spatially separate from one another.
摘要:
A valve unit for an electro-pneumatic brake control device for controlling a parking brake of a vehicle includes at least one air-quantity-boosting valve device for aerating and venting at least one spring brake cylinder of the parking brake and at least one electrically actuatable control valve for controlling the air-quantity-boosting valve device. To simplify the construction of the brake control device, the air-quantity-boosting valve device and the control valve are integrated in a common integral valve block.
摘要:
An electrically controlled brake system for a tractor is provided that is equipped with an anti-jackknifing brake that can be actuated by means of a manual operating element and that acts only on the brakes of a trailer coupled to the tractor. The operating element is an electrical element which generates an electrical signal to control a valve device by means of which the braking force of the anti-jackknifing brake can be increased.
摘要:
An electrically controlled brake system for a tractor is provided that is equipped with an anti-jackknifing brake that can be actuated by means of a manual operating element and that acts only on the brakes of a trailer coupled to the tractor. The operating element is an electrical element which generates an electrical signal to control a valve device by means of which the braking force of the anti-jackknifing brake can be increased.