The invention concerns a method for regulating the injection of fuel into a heat engine of a generator set including an alternator driven by the heat engine, the alternator including a voltage regulator, the heat engine including a speed regulator having an inlet that can receive an external speed s
The invention concerns a method for regulating the injection of fuel into a heat engine of a generator set including an alternator driven by the heat engine, the alternator including a voltage regulator, the heat engine including a speed regulator having an inlet that can receive an external speed setpoint, the method including the following steps: detecting a variation in torque and kinetic energy from electrical measurements on the alternator, carrying out an action on the input of the setpoint of the voltage regulator and/or the speed regulator, on the basis of the magnitude of the variation in torque relative to the kinetic energy level.
대표청구항▼
1. A method for regulating the fuel injection in an engine of an electric generating set comprising an alternator driven by the engine, the alternator comprising a voltage regulator, the engine comprising a speed regulator having an input able to receive an external speed setpoint, the method compri
1. A method for regulating the fuel injection in an engine of an electric generating set comprising an alternator driven by the engine, the alternator comprising a voltage regulator, the engine comprising a speed regulator having an input able to receive an external speed setpoint, the method comprising the following steps: detecting a variation of torque and of kinetic energy by electrical measurements on the alternator; and exerting, as a function of the amplitude of the torque variation relative to the kinetic energy level, an action on the input of the setpoint of the voltage regulator and/or of the speed regulator, the action exerted on the input of the setpoint of the voltage regulator and/or of the speed regulator being such that:if the amplitude of the torque variation relative to the kinetic energy level is below a first predefined threshold, no action is exerted,if the amplitude of the torque variation relative to the kinetic energy level is between the first predefined threshold and a second predefined threshold, the action is exerted on the input of the setpoint of the voltage regulator, andif the amplitude of the torque variation relative to the kinetic energy level is above the second predefined threshold, the action is exerted on the input of the setpoint of the voltage regulator and of the speed regulator. 2. The method as claimed in claim 1, the action exerted on the input of the speed regulator consisting in modifying the speed setpoint value of the engine. 3. The method as claimed in claim 1, the speed setpoint value of the engine being transmitted by the voltage regulator to the speed regulator via a bus, in particular by a series link or an analog signal. 4. The method as claimed in claim 1, the action on the voltage regulator comprising the modification of the value of the current in the pole wheel, so as to temporarily bring the output voltage of the alternator to a value below that before detection of the variation of torque and of kinetic energy, with a view to decreasing the torque level demanded to the engine. 5. The method as claimed in claim 4, the modification of the current in the pole wheel being performed by decreasing the excitation current of the exciter. 6. The method as claimed in claim 4, the modification of the current in the pole wheel being performed by virtue of a pulse width modulation of the voltage across the terminals of the pole wheel. 7. The method as claimed in claim 1, the engine being a turbocharged engine. 8. An electric generating set comprising an engine and an alternator driven by the engine, the electric generating set being suitable for implementing the method for regulating fuel injection such as defined in claim 1. 9. A system for regulating the fuel injection in an engine of an electric generating set comprising an alternator driven by the engine, the alternator comprising a rotor having a pole wheel and a voltage regulator, the engine comprising a speed regulator having an input able to receive an external speed setpoint and a speed sensor, the system being configured to: detect a variation of torque and of kinetic energy by electrical measurements on the alternator; andexert, as a function of the amplitude of the torque variation relative to the kinetic energy level, an action on the input of the setpoint of the voltage regulator and/or of the speed regulator aimed at decreasing the torque demanded to the engine and/or at increasing the speed of the latter, wherein the action exerted on the input of the setpoint of the voltage regulator and/or of the speed regulator being such that: if the amplitude of the torque variation relative to the kinetic energy level is below a first predefined threshold, no action is exerted,if the amplitude of the torque variation relative to the kinetic energy level is between the first predefined threshold and a second predefined threshold, the action is exerted on the input of the setpoint of the voltage regulator, andif the amplitude of the torque variation relative to the kinetic energy level is above the second predefined threshold, the action is exerted on the input of the setpoint of the voltage regulator and of the speed regulator. 10. The system as claimed in claim 9, comprising a controller rotating with the rotor and making it possible to control the current in the pole wheel by a pulse width modulation of the voltage across the terminals of the pole wheel.
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이 특허에 인용된 특허 (9)
Morris Robert Leonard, Alternator field current control for active driveline damping.
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