Adaptive current limit oscillator starter
AssigneeContinental Automotive Systems US, Inc.
InventorPerry Czimmek
Life of this patent
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Abstract
A power-oscillator-starting circuit for an electronic high frequency induction-heater driver. The induction-heater driver, upon receipt of a turn-on signal, generates a high frequency alternating current, wherein the alternating current through an induction-heater coil is magnetically coupled to an appropriate loss component for a variable-spray fuel-injection system. The induction-heater driver uses a power oscillator that is started and restarted as is appropriate based on a threshold current limit referenced to the supply voltage of the induction-heater driver.
Claims14
A power-oscillator-starting circuit comprising:
- means for controlling at least one power switch of the power oscillator;
- means for detecting a current level related to a state of the at least one power switch;
- means for comparing the current level to a threshold level;
- means for decreasing the current level when the current level crosses the threshold level.
A power-oscillator-starting method comprising:
- controlling at least one power switch of the power oscillator;
- detecting a current level related to a state of the at least one power switch;
- comparing the current level to a threshold level;
- and
- decreasing the current level when the current level crosses the threshold level.
Dependencies are inferred from the claim text.