摘要:
A proportional pressure control valve serves as a direct control valve with a pressure reducing function and a pressure holding function. The valve, includes a valve housing (2) with inlet and outlet . ports (4, 5, 6), a control element (7) which has a feedback facility, an armature rod (15) and a proportional magnet (3). The proportional magnet is comprised of a magnet core (17), a magnet armature (16) and a magnet coil (18), wherein this proportional magnet (3) in its operational range possesses a nearly constant magnetic force. In accordance with the invention, in a holding position of the magnet armature (16), the smallest axial space (21) between the magnet armature (16) and the magnet core (17) is so dimensioned, first, that the magnetic force between these two components (16, 17) when in the holding position is greater than the magnetic force in the operational zone of the proportional magnets (3), and second, that the magnet armature (16) can be fixed in the holding position by this magnetic force.
摘要:
Method for control of a proportional magnet comprising a magnet core, a magnet armature, a magnet coil for operating a control element in a shift valve or a proportional pressure-control valve, particularly a pressure-control valve for clutch operation in an automatic motor vehicle transmission, and comprising an electronic control device, whereby the magnet core may be moved back and forth between a control region and a hold region with a magnetic hold position of the magnet armature and a defined transition from the control region to the hold position may be executed and whereby mechanisms are provided for recognition of the movements of the magnet armature.
摘要:
A proportional pressure control valve is described capable of serving as a pilot, servo or direct control valve and having a pressure reducing function and a pressure maintaining function. The valve is comprised essentially of a valve housing (2) with inlet and outlet ports (4, 5, 6), a control element (7), an armature rod (8) and a proportional magnet (3). The proportional magnet (3) is an assembly of a magnet core (10), a magnet armature (11) and a magnet coil (12), whereby the proportional magnet (3) when in its range of operation possesses a nearly constant magnetic strength. In accord with the invention, when in a holding position of the magnetic armature (11) the smallest possible gap (13) exists between the magnet armature (11) and the magnet core (10). This gap is so dimensioned that the magnetic force between the two said components (10, 11) in the holding position is greater than the magnetic force in the operational area of the proportional magnet (3) and that the magnetic armature (11) can be made fixed in position by this said magnetic force.
摘要:
A method for operating a drive-train of a motor vehicle with a drive aggregate in the form of a hybrid drive system (3) which comprises at least one electric machine (2), an internal combustion engine (1), a transmission (5), a drive output (4) and a brake system which comprises at least one wear-free permanent brake (6). When a braking torque is required, the braking torque is distributed between the electric machine (2) and the wear-free permanent brake (6). At the beginning of a braking torque demand, the required brake torque is provided exclusively by the electric machine (2). Thereafter, as a function of characteristics of the wear-free permanent brake, the braking torque demand is transferred, in a controlled manner, from the electric machine to the wear-free permanent brake (6) so that the sum of the braking torques provided at the drive output (4) corresponds to the required braking torque.
摘要:
A method of coupling a combustion engine of a parallel-hybrid drive train via a clutch positioned between the engine and an electric machine with the clutch device initially disengaged, the engine rotational speed approximately at an engine idling rotational speed, and the machine rotational speed larger than the engine idling rotation speed. When a request is made for a drive torque value which is larger than a torque threshold, the engine rotational speed is brought to a rotational speed value above the machine rotational speed and the clutch is slipping engaged once the rotational speed value is reached, while the engine, when the drive train decelerates and a request is made to couple the engine, is brought into deceleration cancellation and the engine rotational speed is brought up to the machine rotational speed while engaging the clutch and dependent on a transfer ability of the clutch.
摘要:
A device and a method of using the device in an electric drive system, particularly in a hybrid drive system of a motor vehicle. The device has at least a first and second battery system, connected in parallel, where their load outputs are connect to a common load output. Each battery system has an energy storage and a pre-charging circuit which is linked to it such that, by way of an output of the pre-charging circuit, the load output of the battery systems is created. The load output of each battery system can be connected or disconnected by way of the pre-charging circuit at the common load output. The common load output is energetically linked directly to an input of an inverter of the device by way of an intermediate circuit capacitor.
摘要:
A motor vehicle control system for a vehicle with a hybrid drive in which first control units, namely, a control unit for each of an internal combustion engine, a transmission, and a hybrid management control unit, are connected to a first data bus. Second control units, namely, at least the hybrid management control unit and further control units of an electric motor portion of the drive-train are connected to the second data bus. Only a single one of the control units connected to the second data bus, holds application data centrally for the hybrid management control unit and, for all the other control units of the electric motor portion of the drive-train, in order for supplying the same with application-dependent data, in contrast the other control units of the electric motor portion, in themselves and without receiving data from the control unit, exclusively contain application-independent program data.
摘要:
A method of influencing an automated transmission of a motor vehicle having a tractional resistance detection unit, the method comprising the steps of reading data, via the tractional resistance detection unit, containing at least information about a torque of a drivetrain, a rotational speed of the drive train, and an acceleration of the vehicle, determining the external tractional resistance of the vehicle based upon the read data, and influencing the shift program by at least one of activation, adaptation and variation of the shift program, on a basis one of an actual and a statistically prepared data about the external tractional resistance of the vehicle.
摘要:
A method of coupling a combustion engine of a parallel-hybrid drive train via a clutch positioned between the engine and an electric machine with the clutch device initially disengaged, the engine rotational speed approximately at an engine idling rotational speed, and the machine rotational speed larger than the engine idling rotation speed. When a request is made for a drive torque value which is larger than a torque threshold, the engine rotational speed is brought to a rotational speed value above the machine rotational speed and the clutch is slipping engaged once the rotational speed value is reached, while the engine, when the drive train decelerates and a request is made to couple the engine, is brought into deceleration cancellation and the engine rotational speed is brought up to the machine rotational speed while engaging the clutch and dependent on a transfer ability of the clutch.
摘要:
A method for the control-side handling of drive torque and/or braking torque in a motor vehicle having as a drive assembly which comprises a hybrid drive with an internal combustion engine (1) and at least one electric machine (2). An engine control device (3) is assigned to the internal combustion engine and a hybrid control device (4) is assigned to the, or each, electric machine. The engine control device (1) and the hybrid control device (4) send and receive drive-torque-relevant and/or braking-torque-relevant data via a data bus (5), and further control devices (6, 7, 8) likewise send and receive drive-torque-relevant and/or braking-torque-relevant data via the data bus. The drive torque and/or braking torque is centrally managed by the hybrid control device (4).