Patents Assigned to Haldex Brake Products Aktiebolag
-
Patent number: 11654872Abstract: The invention relates to an electric brake system (1) for a vehicle. The electric brake system (1) comprises electric brake devices (2). The electric brake devices (2) are powered and controlled by redundant capacitor-based power sources (9A, 9B) and redundant control circuits (16A, 16B). The capacitor-based power source (9A, 9B) can be integrated into axle modules (39A, 39B) located close to a vehicle axle (61A, 61B). The capacitor-based power sources (9A, 9B) are recharged by a hub generator, a regeneration power source (32).Type: GrantFiled: June 20, 2019Date of Patent: May 23, 2023Assignee: HALDEX BRAKE PRODUCTS AKTIEBOLAGInventors: Anders Nilsson, Anders Lindqvist, Peter Nilsson
-
Patent number: 11529937Abstract: A control circuit for controlling the operation of a main switch device which manages an electrical current delivered to an inductive load device, the control circuit including: a current sense circuit configured to be coupled to the switch device and to output a signal representative of an electrical current through the inductive load device; a current comparator circuit configured to receive an actuation command signal, compare the signal representative of the electrical current through the inductive load device with a signal representative of a predetermined current, and to output a control signal based on the comparison for controlling the operation of the main switch device when the actuation command signal indicates that the inductive load device is to be activated; and a recirculation circuit configured to recirculate current through the inductive load device, such that the current used to activate the inductive load device is selectively provided by the main switch device and the recirculation circuitType: GrantFiled: May 26, 2017Date of Patent: December 20, 2022Assignee: Haldex Brake Products AktiebolagInventor: Steven Horton
-
Patent number: 11440520Abstract: The invention relates to an electropneumatic brake system (1) for a commercial vehicle. The brake system (1) comprises brake control modules (8) by which it is possible to generate a brake pressure for service brake cylinders (6) which can be associated with single vehicle wheels or vehicle wheels of a vehicle axle. According to the invention there is a redundant compressed air supply of the brake control modules (8) by connecting the brake control modules (8) both to a compressed air reservoir (41, 42) as well as to a backup compressed air reservoir (43).Type: GrantFiled: August 6, 2020Date of Patent: September 13, 2022Assignee: Haldex Brake Products AktiebolagInventor: Siegfried Heer
-
Patent number: 11207935Abstract: An air suspension system of a commercial vehicle comprises an electronic control device with a level control valve device. A valve element is coupled to a drive element mechanically coupled to a vehicle wheel or axle. In a first relative position of the valve element and a counter valve element, a port for an air suspension bellow is blocked. In a second relative position, the port for the air suspension bellow is connected to a port for an aeration device. In a third relative position, the port for the air suspension bellow is connected to a port for a deaeration device. Control logic generates a control signal for an actuator which, when a level change is set by an operator, correspondingly changes the relative position of the valve element and the counter valve element or the relative position of the counter valve element and a valve housing.Type: GrantFiled: August 20, 2018Date of Patent: December 28, 2021Assignee: HALDEX BRAKE PRODUCTS AKTIEBOLAGInventors: Dudley Harrison, Carl Mellings, Georg Sulzyc, Christian Schering, Siegfried Heer, Stefan Becke, Joachim Noecker, Tobias Tschoeke, Arne Busch
-
Patent number: 10879719Abstract: A regulator control circuit which is configured to control a switching regulator: a feedback comparator configured to compare a signal representative of a reference voltage with a signal representative of a voltage output of the switching regulator and to output a control signal for controlling the operation of the switching regulator dependent on the signals received by the feedback comparator; and a current feedback controller connected to the feedback comparator and configured to receive a signal representative of a current output by the switching regulator and determine whether the regulator control circuit adopts a first or second mode of operation based on the signal representative of a current output, such that, in the first mode of operation, the control signal is for controlling the switching regulator in accordance with a constant voltage control scheme and, in the second mode of operation, the control signal is for controlling the switching regulator in accordance with a constant current control scType: GrantFiled: March 17, 2017Date of Patent: December 29, 2020Assignee: Haldex Brake Products AktiebolagInventor: Steven Horton
-
Patent number: 10843674Abstract: The invention relates to a disc brake actuator (2) for a vehicle. The disc brake actuator (2) comprises an electrical drive (4) and a transmission unit (11) which is driven by the electrical drive (4). The transmission unit (11) comprises a ramp transmission system (12) and a threaded transmission system (13). The ramp transmission system (12) and the threaded transmission system (13) are arranged in series in the force flow of the transmission unit (11).Type: GrantFiled: December 17, 2018Date of Patent: November 24, 2020Assignee: HALDEX BRAKE PRODUCTS AKTIEBOLAGInventor: Lars Mattis Severinsson
-
Patent number: 10814691Abstract: A mechanically actuated level control valve device for a commercial vehicle with an air suspension system is a level control valve and comprises a drive element that can be mechanically coupled to a vehicle wheel or axle. A valve element and a counter valve element have a first relative position, wherein the port for the air suspension bellow is closed, a second relative position, wherein the port for the air suspension bellow is connected to the port for the aeration device, and a third relative position, wherein the port for the air suspension bellow is connected to the port for the deaeration device. The valve element is coupled to a rotatable driveshaft of the level control valve by a drive mechanism. An integrated actuator changes the relative position of the valve element and the drive element or the relative position of the counter valve element and a valve housing.Type: GrantFiled: August 20, 2018Date of Patent: October 27, 2020Assignee: HALDEX BRAKE PRODUCTS AKTIEBOLAGInventors: Dudley Harrison, Carl Mellings, Georg Sulzyc, Christian Schering, Siegfried Heer, Stefan Becke, Joachim Noecker, Tobias Tschoeke, Arne Busch
-
Publication number: 20200317172Abstract: A control circuit for controlling the operation of a main switch device which manages an electrical current delivered to an inductive load device, the control circuit including: a current sense circuit configured to be coupled to the switch device and to output a signal representative of an electrical current through the inductive load device; a current comparator circuit configured to receive an actuation command signal, compare the signal representative of the electrical current through the inductive load device with a signal representative of a predetermined current, and to output a control signal based on the comparison for controlling the operation of the main switch device when the actuation command signal indicates that the inductive load device is to be activated; and a recirculation circuit configured to recirculate current through the inductive load device, such that the current used to activate the inductive load device is selectively provided by the main switch device and the recirculation circuitType: ApplicationFiled: May 26, 2017Publication date: October 8, 2020Applicants: Haldex Brake Products Aktiebolag, Haldex Brake Products AktiebolagInventor: Steven Horton
-
Publication number: 20190103753Abstract: A regulator control circuit which is configured to control a switching regulator: a feedback comparator configured to compare a signal representative of a reference voltage with a signal representative of a voltage output of the switching regulator and to output a control signal for controlling the operation of the switching regulator dependent on the signals received by the feedback comparator; and a current feedback controller connected to the feedback comparator and configured to receive a signal representative of a current output by the switching regulator and determine whether the regulator control circuit adopts a first or second mode of operation based on the signal representative of a current output, such that, in the first mode of operation, the control signal is for controlling the switching regulator in accordance with a constant voltage control scheme and, in the second mode of operation, the control signal is for controlling the switching regulator in accordance with a constant current control scType: ApplicationFiled: March 17, 2017Publication date: April 4, 2019Applicant: Haldex Brake Products AktiebolagInventor: Steven Horton