Robert Boschgmbh

Seg Automotive Germany Gmbh

Markus Roessle

Ewald Mauritz

Matthias Cwik

Stefan Tumback

Juergen Gross

Apostolos Tsakiris

Falco Sengebusch

Harald Schueler

Andreas Lapp

Micha Muenzenmay

Giuseppe Bisceglie

Frank Prohaska

Stefan Schuchnigg

A computer-implemented method for making executable specifications in the system development and/or the system validation of a functional system for a target device for a motor vehicle. The method includes: providing a function system including at least one model view of the one or multiple functions for controlling or regulating a target device; providing a selection interface configured for selecting and changing a system part in a provided first model view by a user; transferring and displaying the system part selected and/or changed in the first model view in another model view for the user; providing a specification-and-approval interface designed for selecting and/or checking and/or further adapting the displayed system parts or changes in the other model view and for approving the changes to the system made in the first and/or in the other model view by the user; adopting in an automated manner the approved changes.

Method and software tool for making executable specifications in the system development or the system validation of complex functional systems

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

Method for meshing a starting pinion with a toothed ring of an internal combustion engine

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.

Method and control unit for determining a future rotational speed

The invention relates to a method for meshing a starter pinion () of a starting device () into a ring gear () of an internal combustion engine (). The internal combustion engine () has a driveshaft (), and the starting device () has a starter motor (), said driveshaft () having a variable rotational speed (n). The internal combustion engine () is switched off in a method step (S1), and the starter pinion (), which is not being rotationally driven by the starter motor (), is then advanced in the direction of the ring gear () by a toe-in actuator () 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 () in a controlled manner in an additional method step (S3) in order to mesh the starter pinion () into a tooth gap () of the ring gear ().

Method for meshing a starter pinion of a starting device into a ring gear of an internal combustion engine

A method and device for activating a starter, which is controllable by a driver unit, for an internal combustion engine of a motor vehicle. A method for activating a starter, which is controllable by a driver unit, for an internal combustion engine of a motor vehicle, the driver unit being controllable by a control unit with the aid of at least one activation line, a switch, which is controllable by the control unit, being situated between the driver unit and a supply unit coupled to a supply voltage, the starter being activated with the aid of the control unit and the switch in the case of failure of the at least one activation line and/or at least one part of the driver unit.

Method and device for activating a starter, which is controllable by a driver unit, for an internal combustion engine of a motor vehicle

Method for predicting a rotational speed (n) of a drive shaft () in an internal combustion engine (), wherein a past rotational speed (n) of the drive shaft () is determined, characterized in that in order to determine a theoretical rotational speed (nT, nT) of the drive shaft () at a future point in time (tT, tT), the change in the rotational speed (n) between two past events (P, P; P, P) occurring at different times is used, one rotational speed (n, n; n, n) and one point in time (t, t; t, t) being assigned to each event, wherein one point in time (t, t) is an earlier point in time and the other is a later point in time (t, t), which therefore lies before the predicted point in time (tT, tT), wherein a gradient (m) is determined for a period between the two events (P, P; P, P) and is used as the basis for deducing a theoretical future rotational speed (nT, nT) at the future point in time (tT, tT), such that in order to determine the theoretical rotational speed (nT, nT) of the drive shaft () at the future point in time (tT, tT), the determined gradient (m) is used to determine the theoretical rotational speed (nT, nT) at the future point in time (tT, tT), on the basis of the later point in time (t, t), thus determining whether the theoretical rotational speed (nT, nT) actually occurred before the future point in time (tT, tT) or not until afterwards.

Method for predicting a rotational speed of a crankshaft in an internal combustion engine

A method for detecting rotational speeds (n) of an internal combustion engine having a signal wheel having marks (Mthrough M) for signaling on a crankshaft of the internal combustion engine is described. The marks (Mthrough M) on the signal wheel are detected with the aid of a sensor and evaluated by a detection and evaluation device. To implement high-precision detection of a rotational speed, the rotational speeds (n) are evaluated using a sector section of approximately 6&#xb0; to 35&#xb0; to increase the accuracy on the basis of a reduced sector section of the signal wheel.

Control system and method for detecting the rotational speed of an internal combustion engine

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.

Method for determining a rotational speed of a driveshaft of an internal combustion engine

The invention relates to a starter (), to a device for starting a starter motor, to a device for detecting an engaged state of a starter pinion, to a method for starting a starter motor, to a method for detecting an engaged state of a pinion () in a corresponding gearwheel, to a computer program and to a computer program product, wherein the method for detecting an engaged state of a pinion () in a corresponding gearwheel, in particular an engaged state of a starter pinion in a gear rim of a starter (), comprises applying a current to a starter relay () for switching the pinion () and detecting at least one current flow parameter of the current flow, wherein the detected current flow parameter is set in relation to potential pinion positions and a pinion position associated with the detected current flow parameter is selected and is thus detected.

Starter having engagement detection function

In a method for controlling a start/stop operation of an internal combustion engine in a motor vehicle, the controller activates a starting device which has a starter motor and a meshing device for the purpose of starting the internal combustion engine and of executing a start/stop operation, the rotational speed and position of a crankshaft of the internal combustion engine being detected with the aid of a detector device. To provide vehicle comfort in start/stop mode and to implement meshing of a starter pinion with the ring gear at a coasting rotational speed at reduced noise and wear, a point in time is determined for meshing with the ring gear of a coasting internal combustion engine after the internal combustion engine has been shut down.

Method and device for start/stop control of an internal combustion engine

The invention relates to a method for predetermining a motion state (BZn+1) of a drive shaft () of an internal combustion engine () on the basis of previous motion states (BZn, BZn&#x2212;2) of the drive shaft (), wherein properties (tn&#x2212;2, &#x3c9;n&#x2212;2) allocated to a first previous motion state (BZn&#x2212;2) and properties (tn, &#x3c9;n) allocated to a second previous motion state (BZn) are used and the drive shaft () assumes periodically recurring angular positions (&#x3c6;n&#x2212;2, &#x3c6;n, &#x3c6;n+2; &#x3c6;n&#x2212;1, &#x3c6;n+1). The invention is characterized in that a future motion state (BZn+1) and the properties (tn&#x2212;1, &#x3c6;n+1) allocated thereto of the drive shaft () are determined in an angular position on the basis of the first evaluated previous motion state (BZn&#x2212;2) and the second evaluated previous motion state (BZn), wherein the angular position (&#x3c6;n+1) of the determined future motion state (BZn+1)of the drive shaft () is not equal to an angular position (&#x3c6;n&#x2212;2, &#x3c6;n) of the first and second previous motion state (BZn, BZn&#x2212;2).

Growing community of inventors

Stuttgart, Germany

Markus Roessle