Patents Assigned to Voith Turbo GmbH & Co., KG
-
Patent number: 5779008Abstract: A drive unit comprising an engine, a transmission, a hydrodynamic retarder comprised of a rotor impeller wheel, a stator impeller wheel and a retarder housing enclosing both. A coolant circuit having coolant also serves as a working fluid of the retarder, and a pump impeller wheel is arranged coaxially with the rotor impeller wheel of the retarder which is used to circulate the coolant. Given this configuration, the space needed by the units which perform the pumping and braking functions of the drive unit are minimized while the efficiency of the pumping and braking functions are maximized.Type: GrantFiled: October 6, 1995Date of Patent: July 14, 1998Assignee: Voith Turbo GmbH & Co. KGInventors: Klaus Vogelsang, Jurgen Friedrich, Hans Gebhardt, Heribert Moller
-
Patent number: 5765627Abstract: The invention concerns a cooling air system for motorized vehicles, notably rail vehicles with diesel engines. The system includes a filter operating in a suction fashion and splitting the air being filtered in a clean-air flow and a dusty-air flow. A radiator follows the filter with a fan evacuating air through the radiator. A bypass line is provided which circumvents the radiator and acts on the dusty-air bushing of the filter with a vacuum of the fan or fans.Type: GrantFiled: November 19, 1996Date of Patent: June 16, 1998Assignee: Voith Turbo GmbH & Co. KGInventor: Karl-Oskar Joas
-
Patent number: 5743232Abstract: A drive unit includes a hydrodynamic retarder having a rotor paddle wheel, a stator paddle wheel, and a housing surrounding the rotor and stator wheels. The unit has a coolant cycle system, through which a coolant flows, the coolant also being a working medium of the retarder. The drive unit further includes a working medium container for the coolant and a pipe having a valve. The pipe is disposed between the retarder and the working medium container. The unit also has a coolant feed line to the retarder.Type: GrantFiled: April 24, 1997Date of Patent: April 28, 1998Assignee: Voith Turbo GmbH & Co. KGInventors: Klaus Vogelsang, Peter Rose, Helmut Ott, Peter Heilinger
-
Patent number: 5726514Abstract: The invention concerns a transverse-flux machine whose stator features a winding with a first phase and a second phase. The windings of the first phase and the windings of the second phase are divided in two component windings each. The first component winding of the first phase is wired in series with the second component winding of the second phase, while the second component winding of the first phase is wired in series with the first component winding of the second phase.Type: GrantFiled: November 21, 1996Date of Patent: March 10, 1998Assignee: Voith Turbo GmbH & Co. KGInventors: Johann Wurz, Rudolf Fehringer
-
Patent number: 5657838Abstract: A drive unit for vehicles with an engine and a gearbox, and with a hydrodynamic retarder. The retarder is in constant drive connection with the engine. The unit includes a coolant circuit whose coolant is at the same time the working medium of the retarder, and the retarder can be utilized as a coolant pump. The retarder is arranged before the gearbox, and the retarder can be united with an engine brake to an overall brake unit (OBU). The overall brake unit is configured such that the retarder can in a braking operation engage sooner than the engine brake.Type: GrantFiled: May 20, 1996Date of Patent: August 19, 1997Assignee: Voith Turbo GmbH & Co. KGInventors: Klaus Vogelsang, Peter Edelmann
-
Patent number: 5657723Abstract: The present invention involves a drive unit, specifically a drive unit for a motor vehicle having an internal combustion engine, a cooling system with fan and a hydrodynamic retarder with a stator, rotor and housing. The retarder is located within a space bounded on one side by the front of the crankcase, on a second side by the fan shaft which runs parallel to the engine shaft, and on a third side by the rear edge of the fan wheel. Viewed from the front, the retarder is substantially located within the fly circle of the fan wheel whereby the air flow generated by the fan wheel removes heat, generated by braking actions, from the housing of the retarder. The retarder housing comprises a bell and a cover body. The cover body defines a chamber having two outlets and an inlet. The chamber being in fluid communication with the working space of the retarder.Type: GrantFiled: November 7, 1995Date of Patent: August 19, 1997Assignee: Voith Turbo GmbH & Co. KGInventors: Peter Edelmann, Jurgen Friedrich, Hans Gebhardt, Heribert Moller, Alfred Neitz, Klaus Vogelsang
-
Patent number: 5651432Abstract: A hydrodynamic brake includes a housing adapted to be filled with a working fluid and to discharge the fluid, a rotor having a plurality of blades, and a stator having a plurality of blades. The number of rotor blades is about 1.2 times to about 1.5 times greater than the number of stator blades.Type: GrantFiled: August 2, 1995Date of Patent: July 29, 1997Assignee: Voith Turbo GmbH & Co. KGInventor: Klaus Vogelsang
-
Patent number: 5507361Abstract: A control system for influencing the speed of a motor vehicle. The invention is characterized in that the retarder controller and the pertaining servomechanism already available in a vehicle with an installed retarder is in traction operation additionally utilized for throttling the drive engine down when a presettable allowed maximum value of the speed is exceeded.Type: GrantFiled: December 2, 1994Date of Patent: April 16, 1996Assignee: Voith Turbo GmbH & Co. KGInventor: Roland Scherer
-
Patent number: 5435133Abstract: A hydrodynamic clutch with a generally horizontal axis, specifically for underground operation. The clutch includes a primary wheel, a secondary wheel, a housing which comprises two essentially axially perpendicular end walls as well as a peripheral wall which is essentially concentric to the axis of the clutch, a scooping bowl fastened to the primary wheel, forming a scooping space and revolving jointly with the primary wheel (rotor), outlet bores discharging from the working space into the scooping space, and a scooping pipe dipping into the scooping space. At least one antechamber has an inlet port for receiving leakage water entrained and thrown off by the outside surface of the rotor. A line is used for transfer of operating fluid from the antechamber to the scooping space.Type: GrantFiled: July 27, 1993Date of Patent: July 25, 1995Assignee: Voith Turbo GmbH & Co. KGInventors: Bernhard Schust, Hermann Schwarz
-
Patent number: 5193654Abstract: The invention concerns a hydrodynamic retarder, the stator blade wheel of which can be brought into eccentric, nonaligned positions with respect to the rotor blade wheel. Either by formation of a blade free circumferential region in the blading of the stator blade wheel together with a longitudinal guide for eccentric shifting or by eccentric swingable mounting of the stator blade wheel, a directly proportional force is obtained from the corresponding braking torque in the stator blade wheel. This force represents a measure for the braking torque and serves as a characteristic value for a torque adjustment. This creates a simple control device with characteristic curves which requires a smaller retarder profile diameter in order to obtain given operating points. The advantage is the reduction of the outside dimensions, the weight and the expense for regulating the brake torque.Type: GrantFiled: April 5, 1991Date of Patent: March 16, 1993Assignee: Voith Turbo GmbH & Co. KGInventor: Klaus Vogelsang
-
Patent number: 5108324Abstract: The present invention is a drive system for a boat propeller, with a motor and a reverse gearbox. For forward travel a hydrodynamic coupling is provided and for reverse travel a hydrodynamic reverse converter is provided. The coupling is operated with its maximum filling degree in the upper range of the propeller speed, but in the lower range of propeller speed with a partial filling. Thus, the hydrodynamic coupling is the single hydrodynamic power transfer unit for the entire forward speed range. In order for the boat to be able to be quickly braked down from full speed, the reverse converter is arranged to provide a high torque conversion in the reactive braking range.Type: GrantFiled: November 15, 1990Date of Patent: April 28, 1992Assignee: Voith Turbo GmbH & Co. KGInventors: Werner Adams, Jurgen Liebe, Wolfgang Weber, Helmut Rauer, Klaus Nolz, Georg Wahl
-
Patent number: 5090523Abstract: The invention concerns a hydrodynamic retarder with a cooling circuit for the working fluid, which cooling circuit is divided into two partial flows of different cross sectional areas, between the outlet and inlet to the retarder, wherein both partial flows are separately cooled in a common heat exchanger. This assures that a small amount of working fluid will flow through the retarder after completion of the braking process, causing an aftercooling. Moreover, this assures that the retarder is more swiftly filled after a braking instruction, and a valve combination is employed for that purpose at the entrance to the retarder. Spring-loaded check valves in the line for the larger partial flow ensure a dependable circulation of the working fluid to and from the receiver.Type: GrantFiled: December 10, 1990Date of Patent: February 25, 1992Assignee: Voith Turbo GmbH & Co. KGInventor: Klaus Vogelsang
-
Patent number: 4964843Abstract: In a power-transmission unit for variable-speed drive of machinery with hydro-dynamic speed-superposition of a differential gear a second torque converter is provided as a braking device. This increases the effectiveness of the unit by feedback of the superposed output onto the drive side. Particularly advantageous is the use of an oppposed-motion converter as brake converter for certain operating conditions or the combination of a with-motion converter and an opposed-motion converter in the unit. Furthermore, this makes an extension of the speed control range possible.Type: GrantFiled: July 14, 1989Date of Patent: October 23, 1990Assignee: Voith Turbo GmbH & Co. KGInventor: Georg Wahl
-
Patent number: 4781020Abstract: A hydrokinetic coupling has a primary vane wheel (11) and a secondary vane wheel (12), which define a toroidal working chamber. A shell (17) rotates with the primary vane wheel and envelops the secondary vane wheel. A constantly open and throttled outlet port (31) and an outlet valve (32) are disposed within the shell. The outlet valve can be closed by means of fluid pressure generated in a control line (33). In accordance with the invention, the control line has a fluid inlet (34) which is disposed in the shell interior. This is arranged at a determined distance from the axis of rotation of the coupling, so that fluid can only penetrate into the control line (33) if the slip in the coupling has assumed a specific minimum value. In this condition the outlet valve (32) is consequently closed, whereas it is opened at greater slip values.Type: GrantFiled: March 25, 1987Date of Patent: November 1, 1988Assignee: Voith Turbo GmbH & Co. KGInventors: Bernhard Schust, Jurgen Liebe, Heinz Holler
-
Patent number: 4761952Abstract: A hydraulic coupling is provided which has a primary blade wheel and a secondary blade wheel confining an operating space, said primary wheel having a first delay chamber connected by channels with the operating space located relatively close to the coupling axis and a second delay chamber, predominantly located further away from the coupling axis than the radially outer limitation of the operating space, the second delay chamber being connected with the operating space by large diameter ports, preferably by the radially outer annular gap between the blade wheels.Type: GrantFiled: June 17, 1986Date of Patent: August 9, 1988Assignee: Voith Turbo GmbH & Co. KGInventor: Heinz Holler
-
Patent number: 4726255Abstract: A power transmission system serves to drive a variable-speed processing machine normally in a lower speed range and if necessary in an upper speed range. The system essentially comprises the following elements which are all disposed coaxially to one another: An input shaft connected by means of a hydrodynamic adjustable coupling to an intermediate shaft to rotate the impeller pump of an adjustable hydrodynamic torque converter. Its turbine wheel rotates with a brakable override shaft. The intermediate shaft and the override shaft are connected to an output shaft by means of a differential gear.Type: GrantFiled: July 30, 1987Date of Patent: February 23, 1988Assignee: J. M. Voith Turbo GmbH & Co. KGInventors: Rudolf Humpfer, Georg Wahl
-
Patent number: 4641683Abstract: A valve arrangement for controlling the flow of mediums, specifically of gases or liquids in pipelines or similar conduits comprising an on-off valve, a throttle positioned downstream of the on-off valve, and a pressure sensor arranged between the on-off valve and the throttle. An actuator is also provided which upon a pressure increase at the pressure sensor causes the immediate or retarded closing of the on-off valve, and at pressure drop the immediate or retarded opening of the on-off valve.Type: GrantFiled: July 12, 1985Date of Patent: February 10, 1987Assignee: Voith Turbo GmbH & Co. KGInventor: Ulf Murner
-
Patent number: 4586594Abstract: A clutch assembly is preferably designed as a multiple-disc clutch. Rotating with one clutch half (22) is a clutch-engaging piston (26) and a pressure chamber (25) into which fluid may be admitted. Against the force of a spring (29), the piston may be subjected to the fluid pressure which is generated in the pressure chamber (25) and which is dependent upon the rotational speed. Arranged beside the pressure chamber is a fluid reservoir chamber (37), communicating with the pressure chamber (25) via connecting conduits (44, 45). With the aid of a control element (48) the filling of the pressure chamber (25) with fluid from the reservoir chamber (37) is controlled during a start-up process. In this manner, the engagement of the clutch assembly is controlled. Thereby delivery of fluid from outside of the clutch assembly is unnecessary.Type: GrantFiled: January 12, 1983Date of Patent: May 6, 1986Assignee: Voith Turbo GmbH & Co. KGInventor: Jacques Duminy
-
Patent number: 4516399Abstract: A hydraulic coupling is disclosed which has a primary bladed wheel and a secondary bladed wheel confining a torus-shaped operating space. A blade-free ram space is provided inside the blading of the primary wheel. A delay chamber rotating with the primary wheel is connected by channels respectively to the ram space and to the operating space. In each of the channels, a switchable valve is provided which operates depending on the primary speed. A scoop tube is fixed to the secondary wheel. The scoop tube has inlet opening of the tube in the radially outermost region of the inner space of the coupling. The scoop tube directs operating fluid into the radially inner region of the coupling, from where the fluid can reach the delay chamber through the valve assigned to the channel.Type: GrantFiled: October 20, 1983Date of Patent: May 14, 1985Assignee: Voith Turbo GmbH & Co. KGInventors: Heinz Holler, Wolfgang Weber
-
Patent number: 4474270Abstract: In a hydrodynamic brake, forming an energy converting mechanism and used for example in connection with heat-exchangers in the utilization of wind-power installations, the torque characteristic of the hydrodynamic brake is adapted to suit the torque characteristic of the power source by making the stator radially displaceable into a position in which its axis is off-center from the axis of the rotor. The stator is eccentrically secured on a shaft and by rotatably mounting the shaft, in the housing, eccentrically of the rotor. In an alternative embodiment, the stator is guided in a rectilinear guide permitting radial displacement.Type: GrantFiled: April 1, 1982Date of Patent: October 2, 1984Assignee: VOITH TURBO GmbH & Co. KGInventor: Klaus Vogelsang