摘要:
The invention relates to a transmission module, especially a transmission module in countershaft design, having at least one input and one output which are connected with each other by way of at least one speed-torque converter device, with a reverse gear which is arranged between a countershaft and the transmission output, with a hydrodynamic retarder. The hydrodynamic retarder having at least one rotor blade wheel and a stator. The rotor blade wheel is connected via a high gear with the transmission output. The high gear is a component of the reverse gear.
摘要:
A hydrodynamic coupling that has a primary impeller and a secondary impeller. A drive shaft drives the primary impeller. The drive shaft has a first end, a second end, a central axis, and a prespecified segment between the first and second ends. There is at least one supply channel for introducing a working medium to the toroidal working chamber. The at least one supply channel is formed in the drive shaft at the central axis along the prespecified segment. The plurality of evacuation channels evacuates the working medium from the toroidal working chamber, and the plurality of evacuation channels is formed in the drive shaft radially about the at least one supply channel. The plurality of evacuation channels is formed from the first end up to at least the second end with the first end being located a predetermined distance from the toroidal working chamber.
摘要:
The invention relates to a method for regulating the maximum speed of a working machine (12), in particular an air compressor in a vehicle. Said working machine is driven by means of a motor (10), using a hydrodynamic coupling (11), which comprises a working chamber (3) that is partially or fully filled with a working medium for transmitting a torque from a drive side (11.1) equipped with an impeller (1) to a driven side (11.2) equipped with a turbine wheel (2). The method comprises the following steps: the speed of the working machine, of the driven side of the hydrodynamic coupling, of the drive side of the hydrodynamic coupling and/or of the motor is detected; a maximum permissible value for the speed is defined and compared to the detected speed; if the detected speed exceeds the maximum permissible value, the quantity of working medium in the working chamber of the hydrodynamic coupling is automatically reduced by the opening or passage of medium through an outlet that is connected to the working chamber.
摘要:
The invention relates to a method for optimizing engine braking in a drive unit, particularly used for motor vehicles, comprising an internal combustion engine consisting of a crankshaft, and an exhaust gas turbine which is connected to a crankshaft via a transfer device. A hydrodynamic coupling is arranged in the transfer device. The invention is characterized by the following features: in one operational state corresponding to braking operation with an engine brake, the exhaust gas is operated at a working point which is characterized by the maximum acceptable limiting speed nmax-5 of the exhaust gas turbine at a minimum output moment M5 and in another operational state corresponding to the partial load operation or thrust operation, the exhaust gas turbine is operated at a working point which is characterized by a minimum speed nmin5 and minimum receivable moment Mmin-5, wherein adjustment of both working points is carried out by the hydrodynamic coupling, such that it can be operated according to at least one characteristic whose transferable moment corresponds to the minimum outputtable or receivable moment MMin-5 of the exhaust gas turbine over a large part of the speed difference characterizing the slip range taking into account the multiplication of the transfer elements in the transfer device to the exhaust gas turbine.
摘要:
The invention relates to an electrohydraulic valve system comprising a feeding duct (P), a working duct (A), and a discharge duct (T), a first and a second valve mechanism (20, 30), each of which is provided with a valve piston (3.1), a control device, and a magnetic regulating device for impinging the valve piston (3.1, 3.2) with a controlled actuating force. The first and the second valve mechanism (20, 30) are placed parallel to each other. The first valve mechanism or the second valve mechanism is active and performs the function of the electrohydraulic valve system while the other valve mechanism is passive during operation. The control device of the active valve mechanism activates the passive valve mechanism and deactivates itself when said control device recognizes a fault while the control device of the passive valve mechanism activates itself and deactivates the active valve mechanism when the control device of the passive valve mechanism recognizes a fault. Deactivation of a valve mechanism comprises moving the valve piston of said valve mechanism to the neutral hydraulic position by means of an apparatus that is separate from the magnetic regulating device.
摘要:
The invention relates to a gearbox module (1) having a gearbox input (E) and at least one gearbox output (A); having a starting element (2) coupled to the gearbox input (E), comprising an input (5) and an output (6) that can be coupled at least indirectly to the gearbox output (A); having a gear-shifting device (3), comprising at least two inputs (7, 8) and one output (9), which can be connected to the gearbox output (A); a first input (7) of the gear-shifting device (3) is connected to the output (6) of the starting element (2) and a second input (8) is connected to the input (5) of the starting element (2); each input (7, 8) of the gear-shifting device (3) is selectively connected by means of a synchronously shiftable coupling (16), thereby producing a first power branch (10) and a second power branch (11), whereby the two synchronously shiftable couplings (16, 17) enable power to flow via the power branches (10, 11) respectively alone or else jointly in a closed state.
摘要:
Control procedure for a flow machine, wherein the flow machine comprises a turbine, which picks up power from a wind or water current, and a driveline, which transfers power from the turbine to an electric generator connected to an electricity grid of constant grid frequency. A power distribution transmission arranged on the input side of the driveline splits power to first and second power branches. A hydrodynamic convefler connects the first and second power branches on the output side of the driveline and the first power branch drives the electric generator with constant speed. The reaction member of the hydrodynamic converter is set to a constant position for a turbine speed below a chosen threshold and above the threshold the reaction member is controlled to maintain a medium speed of the turbine being a function of the momentum picked up by the turbine.
摘要:
A drive train having a hydrodynamic machine and a cooling medium circuit with a liquid or gaseous cooling medium. The hydrodynamic machine has at least one primary impeller, a secondary impeller, at least one control valve, and a control unit. The control unit actuates the at least one control valve in order to control the flow of the working medium into or out of the hydrodynamic machine. The secondary impeller and the at least one primary impeller form a working chamber that can be filled with a working medium. The cooling medium circuit is configured to cool the working medium and the control unit.
摘要:
A starter unit comprising: an input and an output; a starter element, configured as a hydrodynamic component comprising a drive element that can be coupled to the input in a rotationally fixed manner and a driven element that can be coupled to the output. A free wheel mechanism is located between the driven element of the starter element and the output.
摘要:
A hydrodynamic converter is provided having a pump wheel, which is flowed through in operation from the inside to the outside; a turbine wheel, which is flowed through in operation from the outside to the inside; guide blades between the pump wheel and the turbine wheel; and guide blades between the turbine wheel and the pump wheel. The converter can have a speed ratio of between the speed nT of the turbine wheel and the speed nP of the pump wheel of between 1.2 and 4 at approximately even or falling λ progress. The converter can also have different speed ratios between pump and turbine, which can be realized with the ratio R/r equal to or larger than 1.