Abstract:
Läuferbremsvorrichtung für eine hydrodynamische Getriebeeinheit mit einem Bremsbelag (1, 1a, 1b, 1c) und einem Anpresselement (5, 5a, 5b, 5c, 5d), derart gestaltet, dass bei Aktivierung der Läuferbremse das Anpresselement (5, 5a, 5b, 5c, 5d) den Bremsbelag (1, 1a, 1b, 1c) gegen ein Rotationselement (13) der hydrodynamischen Getriebeeinheit drückt und somit das Rotationselement (13) gebremst werden kann, wobei das Anpresselement (5, 5a, 5b, 5c, 5d) ein Hydraulikzylinder (5, 5a, 5b, 5c, 5d) ist, der zumindest teilweise in eine Kanalplatte (3) integriert ist, wobei wenigstens eine Versorgungsleitung (33, 33a) zur Ansteuerung des Hydraulikzylinders (5, 5a, 5b, 5c, 5d) vorhanden ist, die zumindest teilweise in die Kanalplatte (3) integriert ist, und wobei die Kanalplatte (3) weitere Kanäle (30, 31, 32) aufweist, die zur Ansteuerung und/oder Versorgung von weiteren Getriebeelementen dienen.
Abstract:
A brake arrangement for a vehicle comprising a braking system arranged to vary hydraulic or pneumatic brake pressure that is arranged to apply a pressure to a brake calliper; an electric motor arranged to generate a braking torque that is applied to a first wheel when the electric motor is placed in a braking mode of operation, wherein the electric motor is arranged to vary brake torque generated when the electric motor is in the braking mode dependent upon a predetermined operating condition of the braking system.
Abstract:
A hydraulic regenerative braking system for a vehicle is provided. The system includes two hydraulic machines (22, 24), each of which is disposed proximate a corresponding vehicle wheel (14, 16). a transformer (32) is in communication with each of the hydraulic machines, and with a pair of accumulators (30, 34). Each of the hydraulic machines is operable as a pump, pumping fluid to at least one of the accumulators when the vehicle is braking. Each of the hydraulic machines is also operable as a motor, receiving pressurized fluid and transferring toque to the vehicle wheels. The transformer is operable to vary the pressure of the fluid received by the hydraulic machines.
Abstract:
A method for controlling or regulating total auxiliary brake torque in a motor vehicle equipped with engine (1) and drive wheels (8), transmission components (2, 3, 5, 7, 9) incorporated between the engine and the drive wheels, at least one first auxiliary brake (4) of a first type and at least one first auxiliary brake (4) of a first type and at least one second auxiliary brake (4, 6) of a second type, different from the first type, the second auxiliary brake (4, 6) being constituted by a retarder (4, 6), characterized in that, if a request is made for the brake force from the auxiliary brakes to be moderated, then this is done by turning down or moderating, in the first place, the brake torque (4, 6) of the retarder.
Abstract:
Die Erfindung betrifft ein Verfahren zur Steuerung eines elektronischen Bremssystems in einem Fahrzeug, wobei das Bremssystem mindestens eine Betriebsbremse und eine Dauerbremse aufweist, mit mindestens den folgenden Schritten: Ermitteln eines Fahrzeug-Soll-Verzögerungs-Werts, Ansteuern der Dauerbremse mit einem Dauerbrems-Signal (S4) und der mindestens einen Betriebsbremse mit einem Betriebsbrems-Signal (S3) in Abhängigkeit des Fahrzeug-Soll-Verzögerungs-Werts, und Einlesen eines Dauerbrems-Ist-Moment-Signals (S5) der Dauerbremse und Ermitteln eines Anfangs-Signals (S6). Hierbei ist vorgesehen, dass aus dem Anfangs-Signal (S6) ein Korrektur-Signal (S6_korr) (St4) und aus dem Korrektur-Signal (S6_korr) ein Betriebsbrems-Soll-Verzögerungs-Wert ermittelt wird und mit dem Betriebsbrems-Soli-Verzögerungs-Wert die mindestens eine Betriebsbremse über das Betriebsbrems-Signal (S3) angesteuert wird, wobei das Korrektur-Signal (S6_korr) aus dem Anfangs-Signal (S6) und einer Korrekturfunktion (Kv) bestimmt wird, wobei das Anfangs-Signal (S6) einen Dauerbrems-Ist-Verzögerungs-Wert oder einen Dauerbrems-Ist-Moment-Wert übermittelt.
Abstract:
A hydraulic regenerative braking system for a vehicle is provided. The system includes two hydraulic machines (22, 24), each of which is disposed proximate a corresponding vehicle wheel (14, 16). a transformer (32) is in communication with each of the hydraulic machines, and with a pair of accumulators (30, 34). Each of the hydraulic machines is operable as a pump, pumping fluid to at least one of the accumulators when the vehicle is braking. Each of the hydraulic machines is also operable as a motor, receiving pressurized fluid and transferring toque to the vehicle wheels. The transformer is operable to vary the pressure of the fluid received by the hydraulic machines.
Abstract:
Vehicle comprising a service brake of the drum or disc brake type, a secondary brake, a control system for the distribution of a requested brake power between the said service brake and secondary brake and an arrangement for the reconditioning of a friction pair forming part of the said service brake, and a method for the reconditioning of a friction pair in a service brake of the drum or disc brake type forming part of a brake system in a vehicle, which in addition to the said service brake comprises a secondary brake and a control system for distribution of the requested brake power between the said service brake and secondary brake.
Abstract:
A method of operating a retarder control system (17) for a drivetrain retarder (12) such as an engine compression brake of a heavy-duty truck vehicle is disclosed. The method of operation includes three novel subsets each of which controls the operational state and the resistance level at which the drivetrain retarder (12) is operated dependent at least partially upon one or more factors including speeds of one or more drivetrain components (20), vehicle speed, rotational speed of one or more undriven wheels, position of a brake control member, elapsed time of activation of a brake control member (22) and/or elapsed time from a change in a selected resistance level at which the retarder control system (17) is commanded to effect operation of the drivetrain retarder (12).
Abstract:
The present invention relates to a method and an arrangement for controlling the brraking of a hydrodynamic auxiliary brake (4) in a vehicle. The vehicle incorporates an ordinary brake and at least one auxiliary brake in the form of y hydrodynamic brake (4) which contains a circulating medium which is heated up by the heat generated by braking of the vehicle, a cooling system which contains a coolant designed to cool the circulating medium, and at least one brake control (9, 10) which is settable so that a braking effect called for is initiated by the hydrodynamic brake (4). The arrangement incorporates a control unit (12) designed to use information about the coolant's temperature (tc) and its rate of increase (tc') as a basis for allowing a limitation of the braking effect called for from the hydrodynamic brake (4), in order to prevent the coolant exceeding a maximum coolant temperature.