Abstract:
A control device for the selective control of a multiplicity of actuators of an internal combustion engine, comprising: - a central control unit (1); - a multiplicity of actuators associated with the multiplicity of actuator controls (2), which are connected to the central control unit (1), wherein each actuator control (2) of the multiplicity of actuator controls (2) comprises an address, so that the actuator controls (2) are selectively controllable by the central control unit (1) by means of the address and that each actuator control (2) comprises a comparator (6), which is configured to compare a signal, preferably a voltage or current signal, emitted by the central control unit (1) with the address and to emit an activation signal via an activation line (13), if the comparison has resulted in a match of the signal with the address of the respective actuator control (2) within a window, preferably voltage window (ΔV).
Abstract:
A variety of methods and arrangements are described for controlling transitions between firing fractions during operation of an engine. In general, actuator first transition strategies are described in which an actuator position (e.g., cam phase, TCC slip, etc.) is changed to, or close to a target position before a corresponding firing fraction change is implemented. When the actuator change associated with a desired firing fraction change is relatively large, the firing fraction change is divided into a series of two or more firing fraction change steps. A number of intermediate target selection schemes are described as well. The described techniques are well suited for use in managing firing fraction transitions during skip fire, dynamic firing level modulation and/or other types of engine operation where the effective displacement of the engine may change.
Abstract:
A method and apparatus controlling the fuel-to-air ratio of a fuel and air mixture supplied to an operating engine includes the steps of determining a first engine speed before enleanment of the mixture, determining a second engine speed near or at the end of a period of enleanment of the mixture, and after ending the enleanment, determining whether the engine speed recovers within a predetermined range of the first engine speed and if so determining a delta speed difference between the first and second speeds and using this delta speed difference as a factor in determining a change in the fuel-to-air ratio of the fuel mixture supplied to the engine.
Abstract:
A programmable processor receives engine speed data for an engine. The programmable processor calculates a work corresponding to a component of the engine. The calculated work is based on a change in the engine speed data over a range. A predicted work value is read from a table based on an engine speed and first metric. A value is transmitted to a control system when the calculated work is not the predicted work value. The value, when implemented by the control system, reduces a difference between the predicted work value and the calculated work for the component.
Abstract:
Verfahren zum Betreiben einer Brennkraftmaschine (1) mit wenigstens einer Kolben-Zylinder-Einheit (2), bevorzugt einer Vielzahl von Kolben-Zylinder-Einheiten (2), wobei in einem Detektionsmodus der Brennkraftmaschine (1) eine oder mehrere klopffördernde Maßnahmen gesetzt wird bzw. werden bis sich Klopfen in wenigstens einer Kolben-Zylinder-Einheit (2) einstellt und die Maßnahme bzw. Maßnahmen weiter intensiviert werden, bis ein Abbruchkriterium erreicht wird, wobei detektiert wird, bei welcher bzw. welchen der Kolben-Zylinder-Einheiten (2) sich Klopfen eingestellt hat und wobei bei als klopfend detektierten Kolben-Zylinder-Einheiten (2) der Zündzeitpunkt für einen Normalbetriebsmodus der Brennkraftmaschine (1) retardiert wird.
Abstract:
A control device for an internal combustion engine includes an in-cylinder pressure sensor, a crank angle sensor, and an electronic control unit. The electronic control unit is configured to calculate a correlation index value showing a degree of a correlation between a actually measured data of a combustion mass ratio and reference data of the combustion mass ratio based on an operating condition of the internal combustion engine. The electronic control unit is configured to, in a case where the correlation index value is lower than a determination value, prohibit the actually measured value of the specific ratio combustion point pertaining to a combustion cycle in which the correlation index value is calculated from being reflected in the engine control or reduce a degree of the reflection in the engine control compared to a case where the correlation index value is equal to or higher than the determination value.
Abstract:
Systems and methods are disclosed for adjusting the spark timing of an internal combustion engine. According to at least one aspect of the present disclosure, the system includes an exhaust gas recirculation (EGR) system for recirculating exhaust gas flow from at least one primary EGR cylinder of an engine into an intake system prior to combustion. According to at least one other aspect of the present disclosure, the method includes estimating a dynamic EGR fraction of exhaust gas directed into the intake system via the EGR system, estimating a steady-state EGR fraction of exhaust gas directed into the intake system at the changed mass air flow rate, computing a difference between the dynamic fraction and steady-state fraction to determine a change in EGR fraction, and applying a gain factor to the change in EGR fraction to determine a desired spark timing adjustment.
Abstract:
Procédé de réglage d'avance à l'allumage pour la gestion des défauts d'un capteur (14) de cliquetis, ce procédé comprenant les opérations consistant, pour un calculateur (13), à; détecter un défaut de fonctionnement du capteur (14) de cliquetis, arrêter le calcul d'une correction (15) adaptative, et calculer une avance à l'allumage de correction à partir d'une dernière valeur de correction (15) adaptative calculée.