Ignition coil control system and method
AssigneesHyundai Motor Company, Kia Corporation
InventorsKiseon Sim, Dongwon Jung, Won Gyu Kim, Jin Oh Song, Soo Hyung Woo
Life of this patent
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Abstract
An ignition coil control system includes: a first ignition coil; a second ignition coil; a spark plug generating spark discharge by a discharge current generated in the first ignition coil and the second ignition coil; and an ignition controller that controls spark discharge of the electrode by adjusting an amount and duration of the discharge current of the first ignition coil and the second ignition coil based on a step pulse signal including different voltages transmitted from an engine control unit (ECU).
Claims15
An ignition coil control system, comprising:
- a first ignition coil;
- a second ignition coil;
- a spark plug configured to generate spark discharge by a discharge current generated in the first ignition coil and the second ignition coil;
- and
- an ignition controller configured to:
- adjust an amount and a duration of the discharge current of the first ignition coil and the second ignition coil based on a step pulse signal including different voltages transmitted from an engine control unit (ECU), and
- control the spark discharge of the spark plug based on the adjusted amount and duration of the discharge current,
- wherein the ignition controller is further configured to:
- charge the first ignition coil with electric energy from a time point at which the step pulse signal is on to a time point at which a size of the step pulse signal is changed;
- and
- charge the second ignition coil with electric energy for a first dwell time when a first delay time elapses from the time point at which the step pulse signal is on.
An ignition coil control system, comprising:
- a first ignition coil including a primary coil and a secondary coil;
- a first switch configured to selectively electrically connect the primary coil of the first ignition coil;
- a second ignition coil including a primary coil and a secondary coil;
- a second switch configured to selectively electrically connect the primary coil of the second ignition coil;
- a spark plug configured to generate spark discharge by a discharge current generated in the first ignition coil and the second ignition coil;
- and
- an ignition controller configured to control the spark discharge of the spark plug by adjusting an amount and a duration of the discharge current of the first ignition coil and the second ignition coil by turning the first switch and the second switch on or off based on a step pulse signal including different voltages transmitted from an engine control unit (ECU),
- wherein the ignition controller is further configured to:
- charge the first ignition coil by turning on the first switch when the step pulse signal is on;
- and
- charge the second ignition coil for a first dwell time by turning on the second switch when a first delay time elapses from a time point at which the step pulse signal is on.
An ignition coil control method for an ignition coil control system, where the ignition coil control system includes a spark plug configured to generate spark discharge between a center electrode and a ground electrode through a current generated in a first ignition coil and a second ignition coil, the ignition coil control method comprising:
- receiving, by a controller, a step pulse signal including different voltages;
- charging, by the controller, the first ignition coil when the step pulse signal is on;
- charging, by the controller, the second ignition coil when a first delay time elapses from a time point at which the step pulse signal is on;
- discharging, by the controller, the first ignition coil when a size of the step pulse signal is changed;
- discharging, by the controller, the second ignition coil when a first dwell time elapses from a time point at which the second ignition coil is charged;
- when a second delay time elapses from the time point at which the step pulse signal is changed, charging, by the controller, the first ignition coil for a second dwell time and then discharging;
- and
- after the first ignition coil is discharged, charging, by the controller, the second ignition coil for the second dwell time and then discharging.
Dependencies are inferred from the claim text.