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 high-pressure discharge lamp may include a discharge vessel, which contains: electrodes, at least one noble gas as a start gas, at least one element selected from the group consisting of Al, In, Mg, Tl, Hg, and Zn for arc transfer and discharge vessel wall heating, and at least one rare earth halide for the generation of radiation, which is configured such that the generated light is dominated by molecular radiation, wherein at least one member of a first group of rare earth halides is used together with at least one member of a second group of rare earth halides, the first group having the property that the color distance decreases with a power increase when the power of the lamp is increased in a predetermined power interval, and the second group having the property that the color distance increases with a power increase when the power of the lamp is increased in this predetermined power interval.
摘要:
A method for controlling incidences of combustion in an unloaded internal combustion engine of a vehicle. The method includes, determining a load-dynamics threshold, detecting an unloaded operating state of the internal combustion engine, detecting an incidence of the load-dynamics threshold being exceeded in the unloaded operating state, and retarding the ignition timing to form a load-dynamics aiming-off allowance that prevents combustion knock.
摘要:
A method and a device for controlling knock in response to the failure of a phase detector are described, which implement the normal, cylinder-selective knock control under the condition, that the dual ignition is not activated. If the dual ignition is activated when the phase detector fails, then the knock control is carried out, using a non-cylinder-selective measure. Such a non-cylinder-selective measure could include safety-ignition retard or knock control, using one knock-detection threshold value for all of the cylinders.
摘要:
Devices and methods for knock detection and knock control are described, in which, in addition to the customary component parts, the knock-detection circuit has a filter with switchable filter characteristic. The switchover of the filter characteristic, i.e. the shift, for example, of the mid-frequency of the filter, is carried out taking into consideration specifiable quantities or parameters, for instance, as a function of rotational speed. During the switchover of the filter characteristic, i.e. the shift of the mid-frequency, problems could occur in the knock detection; that is why measures are proposed which carry out the knock detection according to a special knock-detection algorithm during a switchover phase lasting a specifiable time.
摘要:
A method for error detection and error correction in the monitoring of measurement values is disclosed, in which the value to be tested is checked for plausibility in an evaluation device, for example a computer, and in the event that an implausibility is identified, the existence of an error is determined. If a further check finds that the error no longer exists, then an error correction takes place. A prerequisite for the error correction, however, is that the range of the value to be monitored in which the error has occurred is also the range in which a current error is no longer occurring. In an expanded method, a differentiation is also made between different errors and an error correction is only possible if it involves the same type of error.
摘要:
A method for determining the ignition point in ignition systems for internal combustion engines, having integrated knock control, a basic ignition point being determined on the basis of measured operating parameters using a stored characteristic map. The knock control, after engine knock has occurred, determines a knock control ignition point, which is more retarded than the basic ignition point, the knock control ignition point, in response to knock-free combustions, being altered step-by-step so as to be more advanced. Furthermore, a torque interface is integrated, which on the basis of the operating parameters and/or the demands placed by the driver, determines a torque-optimized ignition point, and the knock control ignition point being the most advanced permissible ignition point which is issued by the control unit.
摘要:
The method and the device are used for cylinder shut-off in an internal combustion engine (10), in particular of a vehicle, using a control unit (15) in effective operational contact with the cylinders (11, 12, 13, 14) of the internal combustion engine (10), which has a monitoring unit (21), a knock regulating unit (20) and a fuel injector shut-off unit (22). At the same time the provision is made that the fuel injector shut-off unit (22) is operationally linked to the knock regulating unit (20) to achieve coordinated cylinder shut-off. The fuel injector shut-off unit (22) is provided with a memory medium (23) for storing a cylinder shut-off program.
摘要:
A method for knock control of an internal combustion engine, in which values are provided by an adaptive characteristics map for retarding an ignition angle is proposed, the values of the adaptive characteristics map being assigned to at least one operating parameter. Upon occurrence of a dynamic in the at least one operating parameter, a characteristics map value (wkra) is read from the adaptive characteristics map as a function of the instantaneous value of the at least one operating parameter. In this context, a previous value for the ignition angle adjustment (wkr(old)) is only replaced by the characteristics map value (wkra) when the amount of the difference between the previous value for the ignition angle adjustment (wkr(old)) and the characteristics map value (wkra) is less than a predefinable ignition angle difference (KRDWAA) (|wkr(old)−wkra|
摘要:
In the apparatus for controlling a coasting air recirculation valve of the turbocharger of an internal combustion engine, the coasting air recirculation valve is arranged in the coasting air recirculation line bypassing a compressor in the intake duct, and the coasting air recirculation valve is controllable by way of the intake duct pressure on the downstream side of the throttle valve. In order to ensure defined opening and closing of the coasting air recirculation valve, an additional control pressure, with which the coasting air recirculation valve can be opened independently of the intake duct pressure, can be delivered to the coasting air recirculation valve.