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公开(公告)号：US11840996B2
公开(公告)日：2023-12-12
申请号：US18088156
申请日：2022-12-23
Applicant: Cummins Inc.
Inventor： J. Steven Kolhouse , Daniel J. O'Connor , Philipe F. Saad
CPC classification number: F02P5/151 , F02D19/029 , F02D19/084 , F02D19/087 , F02P3/045 , F02P3/05 , F02P5/1527 , F02P15/08 , F02P15/10
Abstract: Systems, apparatuses, and methods of controlling an ignitor are disclosed. A method includes: receiving, by a controller, fuel quality data regarding a fuel for a spark-ignition engine; determining, by the controller, a fuel quality metric based on the fuel quality data; and controlling, by the controller, an ignition energy characteristic of an ignitor in response to the fuel quality metric.
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公开(公告)号：US20180238293A1
公开(公告)日：2018-08-23
申请号：US15893175
申请日：2018-02-09
Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
Inventor： Shogo SAYAMA , Ryou MASUDA , Takayuki FUYUTO , Masao KINOSHITA , Yoshihiro NOMURA
IPC: F02P9/00
CPC classification number: F02P9/002 , F02B19/12 , F02D35/02 , F02P3/05 , F02P9/007 , F02P15/10 , F02P17/12 , F02P2017/121 , F23Q23/00 , H01F38/12 , H01T13/58
Abstract: An ignition device for an internal combustion engine with an ignition plug that ignites an air-fuel mixture in a combustion chamber, wherein a discharge current i provided by the ignition plug to the air-fuel mixture is controlled to be greater than a discharge current reference value ibf, which is a minimum current value at which a spark discharge blow-out phenomenon does not arise.
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公开(公告)号：US09957944B2
公开(公告)日：2018-05-01
申请号：US15302550
申请日：2015-04-07
Applicant: DENSO CORPORATION
Inventor： Satoru Nakayama
CPC classification number: F02P3/05 , F02P3/0442 , F02P3/053 , F02P3/0892 , F02P9/007 , F02P15/10 , F02P17/12
Abstract: An ignition apparatus includes a blow-off determining unit 5b. The blow-off determining unit 5b determines, when the value ΔI2 of the time derivative of a secondary electric current exceeds a predetermined threshold value Z during a determination period, that blow-off has occurred; the determination period is a predetermined time period ΔT from the start of a spark discharge by a main ignition circuit 3. Further, when it is determined that blow-off has occurred during a main ignition (full-transistor ignition), it is controlled to perform a continuing spark discharge after the main ignition in a next cycle. Moreover, a secondary electric current command value in performing the continuing spark discharge is set to an electric current value that is obtained by adding a predetermined electric current value α to the secondary electric current value I2x immediately before the occurrence of blow-off. Consequently, in the next cycle, it is possible to reliably prevent blow-off, thereby reliably preventing misfire.
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公开(公告)号：US09903335B2
公开(公告)日：2018-02-27
申请号：US15285841
申请日：2016-10-05
Applicant: DENSO CORPORATION
Inventor： Shota Kinoshita , Shinichi Okabe , Fumiaki Aoki , Akimitsu Sugiura
CPC classification number: F02P9/002 , F02P3/01 , F02P3/0435 , F02P3/05 , F02P9/007 , F02P15/10 , F02P23/04
Abstract: An ignition device includes: an ignition plug producing plasma discharge between a pair of discharge electrodes of an ignition plug; an ignition coil provided with a primary coil and a secondary coil, the secondary coil applying voltage between the pair of discharge electrodes; a voltage applying unit applying alternating current voltage to the primary coil, a frequency of the alternating current voltage being set to produce voltage resonance in a circuit including the ignition plug and the secondary coil. The voltage applying unit sets an output period of the alternating current voltage to be longer than a first period at which a partial breakdown start to occur at the pair of discharge electrodes, and shorter than a second period at which a total breakdown occurs at the pair of discharge electrodes, when an air/fuel ratio is lower than a predetermined threshold.
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公开(公告)号：US09897062B2
公开(公告)日：2018-02-20
申请号：US15039857
申请日：2014-11-28
Applicant: DENSO CORPORATION
Inventor： Satoru Nakayama , Makoto Toriyama , Akimitsu Sugiura , Masahiro Ishitani , Atsuya Mizutani , Kouji Andoh , Naoto Hayashi , Kaori Doi
CPC classification number: F02P15/10 , F02P3/0407 , F02P3/0442 , F02P3/05 , F02P3/051 , F02P3/0892 , F02P5/145 , F02P5/15 , F02P9/002 , F02P9/007 , F02P17/12 , Y02T10/46
Abstract: An ignition device at least equipped with a DC power source, an ignition coil unit, a spark plug, an ignition switch, and an auxiliary power source, wherein the auxiliary power source is at least equipped with a discharge energy accumulating means, a discharge switch, and a discharge driver. The ignition device is further equipped with a secondary-current feedback controlling means comprising a secondary current detecting means for detecting a secondary current flowing during the ignition coil unit discharge period, and a secondary current feedback control circuit-for determining an upper limit and a lower limit for the secondary current from binary threshold values, and driving so as to open and close the discharge switch on the basis of the determination results. Furthermore, energy is introduced from the auxiliary power source without switching the polarity of the secondary current.
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Patent Agency Ranking
公开(公告)号：US20180038335A1
公开(公告)日：2018-02-08
申请号：US15668791
申请日：2017-08-04
Applicant: DENSO CORPORATION
Inventor： Kaori DOI , Akimitsu SUGIURA , Fumiaki AOKI , Noriaki NISHIO , Yuki MURAYAMA
IPC: F02P3/05
CPC classification number: F02P3/05 , F02D2009/0277 , F02D2041/227 , F02P3/0407 , F02P3/0435 , F02P3/0442 , F02P5/145 , F02P9/007 , F02P15/08 , F02P17/12 , F02P2017/121 , G01R19/165
Abstract: An ignition control system is applied to an internal combustion engine having an ignition coil, a switching element and a measurement detection part which detects at least one of a primary and a secondary voltages and a secondary current. The ignition coil has a primary coil and a secondary coil. The switching element performs conduction and interruption the primary current to the primary coil. The ignition control system has a primary current control unit generating a spark discharge at the ignition plug by passing the primary current through the primary coil, and perform interruption of the primary current, and a discharge short-circuiting determination part determining a generation of discharge short-circuiting based on a measured value. The primary current control unit generates the spark discharge again when discharge short-circuiting occurs.
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公开(公告)号：US20170284356A1
公开(公告)日：2017-10-05
申请号：US15508222
申请日：2015-08-26
Applicant: DENSO CORPORATION
Inventor： Shunichi TAKEDA , Satoru NAKAYAMA , Kanechiyo TERADA
CPC classification number: F02P3/05 , F02P3/0442 , F02P3/0838 , F02P3/0846 , F02P3/096 , F02P5/1502 , F02P9/002 , F02P9/007 , F02P15/00 , F02P15/10 , F02P17/00 , H01F38/12 , H01F2038/122 , Y02T10/46
Abstract: An ignition apparatus for an internal combustion engine includes: a spark plug; a first ignition coil and a second ignition coil; a battery; a booster circuit that boosts a voltage supplied from the battery; a power transistor that conducts and interrupts a primary current flowing to a primary coil included in the first ignition coil; a MOSFET that applies and interrupts the voltage boosted by the booster circuit to a primary coil included in the second ignition coil; and an ECU that starts electric discharge by the spark plug by controlling the power transistor, and repeatedly applies and interrupts the voltage boosted by the booster circuit by the MOSFET so that the electric discharge that is started is maintained.
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公开(公告)号：US20170096979A1
公开(公告)日：2017-04-06
申请号：US15285841
申请日：2016-10-05
Applicant: DENSO CORPORATION
Inventor： Shota KINOSHITA , Shinichi OKABE , Fumiaki AOKI , Akimitsu SUGIURA
CPC classification number: F02P9/002 , F02P3/01 , F02P3/0435 , F02P3/05 , F02P9/007 , F02P15/10 , F02P23/04
Abstract: An ignition device includes: an ignition plug producing plasma discharge between a pair of discharge electrodes of an ignition plug; an ignition coil provided with a primary coil and a secondary coil, the secondary coil applying voltage between the pair of discharge electrodes; a voltage applying unit applying alternating current voltage to the primary coil, a frequency of the alternating current voltage being set to produce voltage resonance in a circuit including the ignition plug and the secondary coil. The voltage applying unit sets an output period of the alternating current voltage to be longer than a first period at which a partial breakdown start to occur at the pair of discharge electrodes, and shorter than a second period at which a total breakdown occurs at the pair of discharge electrodes, when an air/fuel ratio is lower than a predetermined threshold.
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公开(公告)号：US20170067434A1
公开(公告)日：2017-03-09
申请号：US15355639
申请日：2016-11-18
Applicant: BorgWarner BERU Systems GmbH
Inventor： Ganghua Ruan , Dejan Kienzle
CPC classification number: F02P3/045 , F02B75/18 , F02B2075/1808 , F02P3/04 , F02P3/0407 , F02P3/0414 , F02P3/0435 , F02P3/0442 , F02P3/0456 , F02P3/05 , F02P3/053 , F02P3/055 , F02P15/10 , F02P17/12 , H01T13/44 , H01T15/00
Abstract: A method for actuating a spark plug, in which the spark plug is assigned a first ignition coil and second ignition coil. Triggered by a start signal, the primary winding of the first ignition coil is charged, and the primary winding of the second ignition coil is charged with a delay D, for which 0≦D, by supplying a direct current, wherein, whilst each primary winding, is charged, the respective secondary winding is blocked; the primary current supplied to the primary windings is measured; after a period T, the primary winding of the first ignition coil is discharged, and with the delay D the primary winding of the second ignition coil is discharged; the secondary current flowing through the spark plug is measured; thereafter the primary windings of the first and second ignition coil start to be charged alternately when the secondary current falls below a threshold; the primary windings are discharged alternately when the primary current reaches an upper threshold; the above steps are repeated until the duration of discharge between two electrodes of the spark plug 1 reaches a predefined value Z.
Abstract translation: 一种用于致动火花塞的方法，其中火花塞被分配有第一点火线圈和第二点火线圈。 通过启动信号触发，第一点火线圈的初级绕组被充电，并且通过提供直流电而对第二点火线圈的初级绕组充电具有0≤D的延迟D，其中，每个初级绕组 绕组，充电，各个次级绕组被阻塞; 测量提供给初级绕组的初级电流; 在一段时间T之后，第一点火线圈的初级绕组被放电，并且随着延迟D，第二点火线圈的初级绕组被放电; 测量流过火花塞的二次电流; 此后，当二次电流低于阈值时，第一和第二点火线圈的初级绕组交替地开始充电; 当初级电流达到上限阈值时，初级绕组交替放电; 重复上述步骤直到火花塞1的两个电极之间的放电持续时间达到预定值Z。
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公开(公告)号：US20170037826A1
公开(公告)日：2017-02-09
申请号：US15302550
申请日：2015-04-07
Applicant: DENSO CORPORATION
Inventor： Satoru Nakayama
CPC classification number: F02P3/05 , F02P3/0442 , F02P3/053 , F02P3/0892 , F02P9/007 , F02P15/10 , F02P17/12
Abstract: An ignition apparatus includes a blow-off determining unit 5b. The blow-off determining unit 5b determines, when the value ΔI2 of the time derivative of a secondary electric current exceeds a predetermined threshold value Z during a determination period, that blow-off has occurred; the determination period is a predetermined time period ΔT from the start of a spark discharge by a main ignition circuit 3. Further, when it is determined that blow-off has occurred during a main ignition (full-transistor ignition), it is controlled to perform a continuing spark discharge after the main ignition in a next cycle. Moreover, a secondary electric current command value in performing the continuing spark discharge is set-to an electric current value that is obtained by adding a predetermined electric current value a to the secondary electric current value I2x immediately before the occurrence of blow-off. Consequently, in the next cycle, it is possible to reliably prevent blow-off, thereby reliably preventing misfire.
Abstract translation: 点火装置包括吹出判定单元5b。 吹出判定部5b，在判断期间，当二次电流的时间导数的值ΔI2超过规定的阈值Z时，判断为发生了溢流; 确定期间是从主点火回路3开始火花放电开始的预定时间段ΔT。此外，当确定在主点火（全晶体管点火）期间已经发生溢流时，控制为 在下一个循环中，在主点火之后继续发生火花放电。 此外，进行持续火花放电的次级电流指令值被设定为通过在紧接出现吹出之前将预定电流值a与次级电流值I2x相加而获得的电流值。 因此，在下一循环中，可以可靠地防止吹出，从而可靠地防止失火。
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