Abstract: The present invention relates to a method for determining the state of charge of a vehicle battery (150) of a vehicle, a starter relay of a starting device (100) for an internal combustion engine of the vehicle for engaging a starter pinion in a ring gear of the internal combustion engine having a first winding (121) and a second winding (122) which can be controlled independently of one another, the first winding (121) being controlled in predetermined control states and voltage values that are established in the course of these control states being determined and the state of charge of the vehicle battery (150) being determined depending on the determined voltage values.

Abstract: The invention relates to a method for actuating a starter device (10), wherein the starter device (10) comprises a starting pinion (22) which is to be meshed with a toothed ring (25) of an internal combustion engine (210), the internal combustion engine (210) having a drive shaft (222). The invention is characterized in that a) first a rotational speed (n, n1, n2, n3) of the drive shaft (222) is determined, b) said rotational speed (n, n1, n2, n3) is then compared to a predefined rotational speed value (nG), and c) in the case that the rotational speed (n, n1, n2, n3) is less than or equal to the predefined rotational speed value (nG), the starting pinion (22) is toed in the direction of the toothed ring (25).

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.

Abstract: The invention relates to a method for meshing a starter pinion (19) of a starting device (16) into a ring gear (13) of an internal combustion engine (10). The internal combustion engine (10) has a driveshaft (22), and the starting device (16) has a starter motor (25), said driveshaft (22) having a variable rotational speed (n). The internal combustion engine (10) is switched off in a method step (S1), and the starter pinion (19), which is not being rotationally driven by the starter motor (25), is then advanced in the direction of the ring gear (13) by a toe-in actuator (28) by means of a toe-in force (FV) in a method step (S2) until the starter pinion contacts the ring gear. A meshing force (FE) is then exerted onto the starter pinion (19) in a controlled manner in an additional method step (S3) in order to mesh the starter pinion (19) into a tooth gap (34) of the ring gear (13).

Abstract: A method for actuating an element (22) in the air supply tract (29) of an internal combustion engine (19), characterized in that the element (22) is actuated such that it opens the air supply tract (29) before the pinion (10) engages into the toothed ring (16) of the internal combustion engine (19).

Abstract: Method for predicting a rotational speed (n) of a drive shaft (16) in an internal combustion engine (13), wherein a past rotational speed (n) of the drive shaft (16) is determined, characterized in that in order to determine a theoretical rotational speed (nT1, nT2) of the drive shaft (16) at a future point in time (tT1, tT2), the change in the rotational speed (n) between two past events (P01, P11; P02, P12) occurring at different times is used, one rotational speed (n01, n11; n02, n12) and one point in time (t01, t11; t02, t12) being assigned to each event, wherein one point in time (t01, t02) is an earlier point in time and the other is a later point in time (t02, t12), which therefore lies before the predicted point in time (tT1, tT2), wherein a gradient (m) is determined for a period between the two events (P01, P11; P02, P12) and is used as the basis for deducing a theoretical future rotational speed (nT1, nT2) at the future point in time (tT1, tT2), such that in order to determine the theoretical rotat

Abstract: A method determines a rotational speed of a driveshaft of an internal combustion engine. The rotating driveshaft assumes different rotary positions at different times. An average gradient of rotary speed for the driveshaft is determined at at least two rotary positions. Subsequently, an average rotational speed for the driveshaft is obtained from a past average gradient of rotary speed at at least one later point in time.

Abstract: The invention relates to a method for meshing a starter pinion (19) of a starting device (16) into a ring gear (13) of an internal combustion engine (10). The internal combustion engine (10) has a driveshaft (22), and the starting device (16) has a starter motor (25), said driveshaft (22) having a variable rotational speed (n). The internal combustion engine (10) is switched off in a method step (S1), and the starter pinion (19), which is not being rotationally driven by the starter motor (25), is then advanced in the direction of the ring gear (13) by a toe-in actuator (28) by means of a toe-in force (FV) in a method step (S2) until the starter pinion contacts the ring gear. A meshing force (FE) is then exerted onto the starter pinion (19) in a controlled manner in an additional method step (S3) in order to mesh the starter pinion (19) into a tooth gap (34) of the ring gear (13).

Abstract: Method for predicting a rotational speed (n) of a drive shaft (16) in an internal combustion engine (13), wherein a past rotational speed (n) of the drive shaft (16) is determined, characterised in that in order to determine a theoretical rotational speed (nT1, nT2) of the drive shaft (16) at a future point in time (tT1, tT2), the change in the rotational speed (n) between two past events (P01, P11; P02, P12) occurring at different times is used, one rotational speed (n01, n11; n02, n12) and one point in time (t01, t11; t02, t12) being assigned to each event, wherein one point in time (t01, t02) is an earlier point in time and the other is a later point in time (t02, t12), which therefore lies before the predicted point in time (tT1, tT2), wherein a gradient (m) is determined for a period between the two events (P01, P11; P02, P12) and is used as the basis for deducing a theoretical future rotational speed (nT1, nT2) at the future point in time (tT1, tT2), such that in order to determine the theoretical rotat

Abstract: The invention relates to a method for predetermining a motion state (BZn+1) of a drive shaft (222) of an internal combustion engine (210) on the basis of previous motion states (BZn, BZn?2) of the drive shaft (222), wherein properties (tn?2, ?n?2) allocated to a first previous motion state (BZn?2) and properties (tn, ?n) allocated to a second previous motion state (BZn) are used and the drive shaft (222) assumes periodically recurring angular positions (?n?2, ?n, ?n+2; ?n?1, ?n+1). The invention is characterized in that a future motion state (BZn+1) and the properties (tn?1, ?n+1) allocated thereto of the drive shaft (222) are determined in an angular position on the basis of the first evaluated previous motion state (BZn?2) and the second evaluated previous motion state (BZn), wherein the angular position (?n+1) of the determined future motion state (BZn+1)of the drive shaft (222) is not equal to an angular position (?n?2, ?n) of the first and second previous motion state (BZn, BZn?2).

Abstract: A method for determining an average rotational speed of a rotating transmission shaft of an internal combustion engine to a rotational position is described, the rotating transmission shaft taking on various rotational positions and having an actual instantaneous rotational speed at a first time in the rotational position. At a first approximation in a first step, an approximated average rotational speed is determined, as the difference of the actual rotational speed at the first time and in the rotational position, and the product of a weighted amplitude and an angle-dependent amplitude factor.

Abstract: The invention relates to a method for determining a rotational speed (nX) of a driveshaft (13) of an internal combustion engine (10) at at least one later point in time (tX), wherein the rotating driveshaft (13) assumes different rotary positions (PHI 11, PHI 12; PHI 21, PHI 22) at different times (t11, t12; t21, t22), wherein from at least two rotary positions (phi11, phi12; phi21, phi22) a past average rotary behaviour (m1; m2; mi) can be determined and from this an average rotational speed (nX) at at least one later point in time (tX) is inferred.

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.

Abstract: The invention relates to a method for actuating a starter device (10), wherein the starter device (10) comprises a starting pinion (22) which is to be meshed with a toothed ring (25) of an internal combustion engine (210), the internal combustion engine (210) having a drive shaft (222). The invention is characterized in that a) first a rotational speed (n, n1, n2, n3) of the drive shaft (222) is determined, b) said rotational speed (n, n1, n2, n3) is then compared to a predefined rotational speed value (nG), and c) in the case that the rotational speed (n, n1, n2, n3) is less than or equal to the predefined rotational speed value (nG), the starting pinion (22) is toed in the direction of the toothed ring (25).

Abstract: The invention relates to a method for predetermining a motion state (BZn+1) of a drive shaft (222) of an internal combustion engine (210) on the basis of previous motion states (BZn, BZn?2) of the drive shaft (222), wherein properties (tn?2, ?n?2) allocated to a first previous motion state (BZn?2) and properties (tn, ?n) allocated to a second previous motion state (BZn) are used and the drive shaft (222) assumes periodically recurring angular positions (?n?2, ?n, ?n+2; ?n?1, ?n+1). The invention is characterized in that a future motion state (BZn+1) and the properties (tn?1, ?n+1) allocated thereto of the drive shaft (222) are determined in an angular position on the basis of the first evaluated previous motion state (BZn?2) and the second evaluated previous motion state (BZn), wherein the angular position (?n+1) of the determined future motion state (BZn+1)of the drive shaft (222) is not equal to an angular position (?n?2, ?n) of the first and second previous motion state (BZn, BZn?2).

Abstract: A starter supply network having a first energy source for the primary energy supply of a starter motor, the first energy source being coupled to a network terminal of the starter supply network; a second energy source; and a coupler, which is configured to couple the second energy source to the network terminal as a function of a starter motor current delivered by the first energy source, in order to counteract a reduction in the starter motor current.