Abstract: A method for determining a future rotational speed of a rotating drive shaft of an internal combustion engine is described, in particular while the internal combustion engine coasts after being turned off, the future rotational speed being calculated from a course of measured rotational speeds. To predict a future rotational speed of the drive shaft of the internal combustion engine as accurately as possible, instantaneous rotational speeds measured at different rotational positions of drive shaft are evaluated.
Type:
Grant
Filed:
December 30, 2010
Date of Patent:
March 27, 2018
Assignee:
SEG Automotive Germany GmbH
Inventors:
Matthias Cwik, Markus Roessle, Ewald Mauritz, Stefan Tumback
Abstract: An electrical machine includes an angular position transducer for identifying a first rotation angle of a rotor; a stator winding for generating a magnetic field; a voltage measuring instrument for sensing a pole wheel voltage at the ends of the stator winding upon a rotation of the rotor; and an identification circuit for identifying a second rotation angle from the pole wheel voltage and for identifying an angle difference between the first and the second rotation angle.
Type:
Grant
Filed:
January 24, 2013
Date of Patent:
March 6, 2018
Assignees:
ROBERT BOSCH GMBH, SEG AUTOMOTIVE GERMANY GMBH
Inventors:
Julian Roesner, Mario Kaepple, Paul Mehringer
Abstract: A method for operating an active rectifier including a multitude of controllable semiconductor switching elements, in which a switch is carried out between a first control mode and a second control mode for controlling the semiconductor switching elements, and vice versa, the semiconductor switching elements being controlled with a first switching time in the first control mode and with a second switching time in the second control mode, the second switching time being greater than the first switching time.
Type:
Grant
Filed:
December 19, 2014
Date of Patent:
February 13, 2018
Assignee:
SEG Automotive Germany GmbH
Inventors:
Christopher Otte, Paul Mehringer, Wolfgang Feiler
Abstract: A method for operating an electric machine coupled to an internal combustion engine in a motor vehicle, the electric machine having a stator winding, a rotor winding, a field regulator assigned to the rotor winding and a current converter post-connected to the stator winding having controllable switching elements, in which during a starting process of the internal combustion engine the electric machine is operated as a motor according to a rotational speed specification signal.
Type:
Grant
Filed:
March 5, 2014
Date of Patent:
February 6, 2018
Assignees:
ROBERT BOSCH GMBH, SEG AUTOMOTIVE GERMANY GMBH
Inventors:
Rolf Jaros, Nikolas Poertner, Axel Reuter, Alexander Trofimov
Abstract: Method for producing a stator winding (18) of an electric machine (10), in particular an AC generator, wherein the stator winding (18) has at least n phase windings (120, 121, 122, 123, 124), and one phase winding (120, 121, 122, 123, 124) has a plurality of directly successive wound coils (82) with coil sides (88) and coil side connectors (91), wherein the coils (82) are divided into first coils (82.1) and second coils (82.2), with a forming tool (100), in which slots (105, 106; 105?, 106?) are provided which are suitable for accommodating the coils (82), wherein a first coil (82.1) is arranged in a slot (105; 105?), and a second coil (82.2) is arranged in another slot (105; 105?), characterized in that n?1 slots (105, 106; 105?, 106?) are arranged between the first coil (82.1) and the second coil (82.2).
Type:
Grant
Filed:
December 1, 2011
Date of Patent:
January 30, 2018
Assignee:
SEG Automotive Germany GmbH
Inventors:
Gert Wolf, Klaus Herbold, Gerlinde Weber, Christoph Schwarzkopf, Eberhard Rau, Alexander Mueller, Helmut Kreuzer, Kurt Reutlinger
Abstract: Method for making an electrical machine (10), especially a three-phase generator for vehicles, that comprises a stator (16) and a rotor (20). The rotor (20) comprises a first and a second claw pole (22, 23) from which claw pole fingers (24) respectively extend in the axial direction from claw pole roots (60). A centering point (74) for a tool is located on a rear radius (72) of the claw pole roots (60).