摘要:
A plasma ignition device 20 includes a spark plug 100, a DC power supply 210, an AC power supply 220, and a coupling section 300. The coupling section 300 includes a capacitor 320 which electrically connects the AC power supply 220 to the spark plug 100. The coupling section 300 reduces the capacitance of the capacitor 320 in the second ignition mode in which transmission of AC power is halted, as compared with that in the first ignition mode in which AC power is transmitted to the spark plug 100.
摘要:
An ignition system improves an air-fuel-ratio, i.e., good mileage and lean burn without changing a gasoline engine structure significantly. The ignition system comprises an electromagnetic wave generator including a first output part and a second output part configured to output an electromagnetic wave, a discharge device comprising a booster and a discharger provided at an output side of the booster, the booster having a resonance structure configured to boost an electromagnetic wave inputted from the first output part so as to cause a discharge from the discharger, and an electromagnetic wave emitter configured to emit an electromagnetic wave inputted from the second output part. The electromagnetic wave generator decreases an output power from the first output part, while the electromagnetic wave generator increases the output power from the second output part when an amount of a reflected wave from the discharge device exceeds a predetermined value.
摘要:
In an ignition control apparatus (30), a control unit (319) controls switching elements so as to supply a primary current to the other end side of a primary winding (311a) opposite to one end thereof connected to a DC power source (312) by discharging (which is performed by turning on a second switching element (314) stored energy from a capacitor (317) during ignition discharge (which is started by turning off a first switching element (313). In particular, the control unit controls the second switching element or the third switching element so as to provide variability to the amount of stored energy discharged from the capacitor according to an operating state of an internal combustion engine.
摘要:
Disclosed is a method for operating an ignition system (1) for an internal combustion engine, comprising a step-up converter (7), characterized in that a spark interruption is recognized, and the operating mode of the step-up converter (7) is modified in response thereto. Also disclosed is an ignition system for an internal combustion engine, comprising a step-up converter that includes means for carrying out the aforementioned method.
摘要:
Disclosed are an ignition system and a method for operating an ignition system for an internal combustion engine, said ignition system comprising a primary voltage generator and a step-up converter for generating an ignition spark. According to the invention, a voltage required for the ignition spark is determined, whereupon a switch-on time of the step-up converter is modified in relation to a switch-off time of the primary voltage generator.
摘要:
The invention relates to a method for operating an ignition system (1) for an internal combustion engine, said system comprising a primary voltage generator (2) and a bypass (7), in particular a step-up voltage converter, for maintaining a spark generated by means of the primary voltage generator (2). Said method is characterised in that: a modified energy requirement is determined for an ignition spark that is maintained by means of the bypass (7); and the working mode of the bypass (7) is modified in response to said determination.
摘要:
A plasma ignition device for internal combustion engines is described. It comprises a driving and analog and/or digital control unit (20), an ignition coil (30) and a spark plug (40, 41 ), interconnected each other in a circuit by means of electrical / electronic connection means (50, 1 1, 26, 27, 31, 32, 33, 36.1, 36.2, B). The ignition coil (30) comprises two primary windings (34, 35) connected in series each other, having a central electrical connection (34.1 ) between the first primary winding (34) and the second primary winding (35), for electrically charging a capacitor (37), connected in series to the two primary windings (34, 35), and for magnetically charging a magnetic core (38) magnetically coupled to a secondary winding (36) of the ignition coil (30), in order to generate a potential difference i across a discharge "gap" (41 ) of a spark plug (40).
摘要:
An ignition system including a spark plug control unit adapted to control at least two stages comprising a first transformer (T1) including a first primary winding (L1) inductively coupled to a first secondary winding (L2); a second transformer (T2) including a second primary winding (L3) inductively coupled to a second secondary winding (L4); said control unit enabled to simultaneously energize and deenergize primary windings (L1, L3) by simultaneously switching on and off two corresponding switches (Q1, Q2) to maintain a continuous ignition fire, wherein means to implement operation is based solely on selective switching of switches Ql and Q2.
摘要:
An ignition system for an internal combustion engine comprises an ignition transformer with two primary windings (L P1 , L P2 ). The ignition system is designed to generate, for a given ignition event, a unipolar current (I SEC ) through the secondary winding (L SEC ) by way of a control circuit (20) that is configured to first energize and deenergize the first primary winding (L P1 ) to establish a first electrical arc across the sparkplug electrodes (14) and, when the current (I SEC ) in the secondary winding reaches, or drops below, a current threshold (I SEC_TH ), repeatedly energizes and deenergizes the second primary winding (L P2 ) to establish a plurality of second current pulses across the electrodes in order to maintain the burn phase.