摘要:
A method for operating an internal combustion engine and a corresponding device are described in which a combustion of a fuel in a fuel-air mixture introduced into a cylinder occurs in at least one cylinder. At least one adjusting device is used to influence at least one physical process, which modifies the distribution of the constituents and/or the overall composition of the fuel-air mixture in the at least one cylinder. If knock occurs, a knock control is used to gradually retard an ignition angle in the at least one cylinder from a fundamental ignition angle by an adjustment angle. When the adjustment of the at least one adjusting device exceeds a specifiable first threshold and/or the change in the at least one physical process exceeds a specifiable second threshold, the adjustment angle is rapidly reduced by increments, the more rapid reduction occurring with a larger increment and/or with a higher frequency of increments.
摘要:
A combustion state during the initial stage after ignition is detected, and based on the detected combustion state, it is judged whether or not incomplete combustion has occurred, and when it is judged that incomplete combustion has occurred, an ignition signal is output so as to perform the re-ignition immediately.
摘要:
An engine control system executes given control tasks, for example, at a 30° angular interval of an engine crank shaft. If a failure of a crank sensor has occurred, it becomes impossible to determine the 30° angular interval of the crank shaft. In this case, the engine control system works to calculate one-third of an interval (e.g., a 90° crank angle) between consecutive inputs of cam angular position signals to define a dummy 30° crank angle as a trigger for initiating the control tasks. If the cam angular position signal is inputted before the number of times the control tasks should be executed, in sequence, at an interval of the dummy 30° crank angle is not yet reached, each of the control tasks is executed immediately the same number of times as that the control task has not yet been executed at the dummy 30° crank angle time interval.
摘要:
An inertia-related engine speed fluctuation is computed when the engine is rotated without ignition. A load-related engine speed fluctuation is computed when the engine is rotated with ignition and combustion. The inertia-related engine speed fluctuation is indicative of an inertia moment that is variable in accordance with equipments connected with the engine. The load-related engine speed fluctuation is indicative of an engine load. When estimating the engine load, the inertia-related engine speed fluctuation is considered for removing an influence of the inertia moment on the engine load. The estimated engine load is used for controlling the engine. It is possible to consider the inertia moment into an engine control.
摘要:
A method for regulating knocking in an internal combustion engine, particularly of a motor vehicle, has the following steps: determining a knocking combustion for a calculated first base ignition angle in one or more cylinders of the internal combustion engine originated from a previous operating condition; and setting a new, second base ignition angle taking into account the existing operating condition. A query concerning the relative sizes of a setpoint ignition angle for efficiency reduction and the first base ignition angle is provided for setting the second base ignition angle to allow for knocking regulation which is favorable to the operation. If the setpoint ignition angle is smaller than the base ignition angle, an ignition angle retardation is performed with an adjustment value that must be adjusted, and which is given by the sum of a previously determined, constant retardation value and an adjusted, variable retardation value.
摘要:
A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, such as after an engine cold start, the method operates an engine with a first group of cylinders having a first ignition timing, and a second group of cylinders having a second ignition timing more retarded than the first group. In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also can change to combusting all cylinders at substantially the same ignition timing under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.
摘要:
The decision period in which an output of a knock sensor is extracted is set by a setting unit in response to an output of a crank angle sensor. The set decision period is stored in a storing unit and is changed by a changing unit 14 to contain the output of the knocking in response to an output of a processing circuit. In addition, the processing circuit corrects the decision period stored in the storing unit to reduce a difference between the changed decision period and the decision period stored in the storing unit. According to this, since the decision period can be corrected to contain the sensed output of the knocking in response to the variation of the knocking occurring timing, the knocking sensing precision can be improved.
摘要:
A process for determining an operating parameter of an internal combustion engine as a function of three control parameters (N, P, &lgr;) of this motor, comprises: a) establishing a first map of the operating parameter as a function of two control parameters, the third control parameter being fixed at a first value; b) establishing a second map of the operating parameter as a function of the two same control parameters, the third control parameter being fixed at a second value; c) establishing a relationship between the operating parameter and the third control parameter over all the range of variation of this parameter at at least one specific operating point; and d) using this relationship to determine the operating parameter as a function of the three control parameters at all points of operation of the motor.
摘要:
A method and apparatus for determining the switching states of a target wheel used in an internal combustion engine, the method including providing a camshaft, providing a target wheel having teeth coupled to the camshaft, providing a sensor to detect the teeth of the target wheel, providing a cam phaser to phase the camshaft relative to a crankshaft of the internal combustion engine, homing the cam phaser to a known position relative to the crankshaft, rotating the crankshaft and camshaft, detecting the switching of the teeth by the sensor, referencing switching information detected by the teeth to crankshaft position information to produce a calibration for the target wheel, and storing the calibration in a controller to be use for control of the internal combustion engine.
摘要:
An apparatus for detecting crank angle position in an internal combustion engine, in which a first rotator, which is interlocked with the crankshaft, has a plurality of detectable parts in the rotation direction, the detectable parts on the first rotator are provided so that adjoining spaces are nearly equal to each other. A second rotator which is interlocked with the camshaft has a plurality of detectable parts in the rotation direction, the detectable parts on the second rotator are provided so that permutations each consisting of at least two of consecutive angle intervals in one rotation direction differ from each other. With this configuration, the stroke of an internal combustion engine can be determined in a short time.