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Patent Agency Ranking
公开(公告)号：US10041463B2
公开(公告)日：2018-08-07
申请号：US15302552
申请日：2015-04-09
Applicant: DENSO CORPORATION
Inventor： Makoto Toriyama , Shunichi Takeda , Kanechiyo Terada , Satoru Nakayama , Takashi Oono
Abstract: According to an ignition device, a first switching unit applies a voltage between electrodes of by spark plug by turning on/off energization from an on-vehicle battery to a primary coil. Further, a second switching unit applies a voltage having the same direction as a spark discharge generated by turning on/off the first switching unit between the electrodes of the spark plug by supplying electrical energy accumulated in a booster circuit into a primary coil. Accordingly, it is possible to greatly reduce a complexity of the on/off switching of the first and second switching units compared to a conventional technology.
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公开(公告)号：US10302062B2
公开(公告)日：2019-05-28
申请号：US15680265
申请日：2017-08-18
Applicant: DENSO CORPORATION
Inventor： Masahiro Ishitani , Akimitsu Sugiura , Makoto Toriyama , Satoru Nakayama , Yuuki Kondou , Hisaharu Morita , Naoto Hayashi , Yuuto Tamei , Takashi Oono , Shunichi Takeda
Abstract: An ignition control apparatus of the present embodiment controls operation of an ignition plug provided so as to ignite an air-fuel mixed gas. The ignition control apparatus is characterized in that the ignition control apparatus includes: an ignition coil provided with a primary winding which allows a current to pass as a primary current therethrough and a second winding connected to the ignition coil, an increase and a decrease in the primary current generating a secondary current passing through the secondary winding; a DC power supply provided with a non-ground side output terminal, the non-ground side output terminal being connected to one end of the primary winding so that the primary current is made to pass through the primary winding; a first switching element configured of a semiconductor switching element provided with a first control terminal, a first power side terminal, and a first ground side terminal, the semiconductor switching element controlling on and off states of current supply between the first power side terminal and the first ground side terminal based on a first control signal inputted to the first control terminal, the first power side terminal being connected to the other end side of the primary winding, the first ground side terminal being connected to a ground side; a second switching element configured of a semiconductor switching element provided with a second control terminal, a second power side terminal, and a second ground side terminal, the semiconductor switching element controlling on and off states of current supply between the second power side terminal and the second ground side terminal based on a second control signal inputted to the second control terminal, the second ground side terminal being connected to the other end side of the primary winding; a third switching element configured of a semiconductor switching element provided with a third control terminal, a third power side terminal, and a third ground side terminal, the semiconductor switching element controlling on and off states of current supply between the third power side terminal and the third ground side terminal based on a third control signal inputted to the third control terminal, the third power side terminal being connected to the second power side terminal of the second switching element, the third ground side terminal being connected to the ground side; and an energy accumulation coil configured of an inductor, the inductor being interposed in a power line connecting the non-ground side output terminal of the DC power supply and the third power side terminal of the third switching element, the energy accumulation coil accumulating energy therein in response to turning on of the third switching element.
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公开(公告)号：US09995267B2
公开(公告)日：2018-06-12
申请号：US14783695
申请日：2014-04-11
Applicant: DENSO CORPORATION
Inventor： Yuuki Kondou , Masahiro Ishitani , Satoru Nakayama , Akimitsu Sugiura , Makoto Toriyama , Takashi Oono
CPC classification number: F02P15/08 , F02P3/0435 , F02P3/05 , F02P5/15 , F02P5/1502 , F02P15/10 , Y02T10/46
Abstract: An ignition apparatus includes an adjuster. The adjuster adjusts, according to at least one of a primary voltage and a secondary voltage detected by a voltage detector, at least one of an application timing and an application level of auxiliary electrical energy to an ignition coil while main electrical energy is applied to a spark plug by the ignition coil. The application timing includes whether the auxiliary electrical energy is applied to the ignition coil.
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公开(公告)号：US09765748B2
公开(公告)日：2017-09-19
申请号：US14783901
申请日：2014-04-11
Applicant: DENSO CORPORATION
Inventor： Masahiro Ishitani , Akimitsu Sugiura , Makoto Toriyama , Satoru Nakayama , Yuuki Kondou , Hisaharu Morita , Naoto Hayashi , Yuuto Tamei , Takashi Oono , Shunichi Takeda
CPC classification number: F02P3/0435 , F02P11/06 , F02P15/10
Abstract: An ignition control device comprises: a first switching element having a power source side terminal connected to an other end side of a primary coil and a first ground side terminal connected to a ground side; a second switching element having a second ground side terminal connected to the other end side of the primary coil; a third switching element having a third power source side terminal connected to the second power source side terminal in the second switching element, and a third ground side terminal connected to the ground side; and an energy storage coil. The energy storage coil is an inductor interposed in an electric power line connecting a non-ground side output terminal in a DC power source and the third power source side terminal in the third switching element, and stores energy from the turning on of the third switching element.
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公开(公告)号：US09166381B2
公开(公告)日：2015-10-20
申请号：US14202841
申请日：2014-03-10
Applicant: DENSO CORPORATION
Inventor： Naoto Hayashi , Kanechiyo Terada , Takashi Oono
CPC classification number: H01T15/00 , F02P3/055 , F02P3/0552 , F02P9/002
Abstract: An ignition device includes an ignition coil with a primary coil and a secondary coil, a spark plug with center and ground electrodes for discharge therebetween, and a voltage limiting circuit. The voltage limiting circuit limits voltage applied between the electrodes of the spark plug such that the voltage has an absolute value limited within a predetermined voltage limiting value. The voltage limiting value is differentiated from each other in first and second stages. The first stage is defined as a period in which an initial discharge peak ends, the initial discharge peak being initially generated by electric energy. The second stage is defined as a period after the end of the initial discharge peak. The voltage limiting value in the first stage is lower than the voltage limiting value in the second stage.
Abstract translation: 点火装置包括具有初级线圈和次级线圈的点火线圈，具有中心的火花塞和用于在其间放电的接地电极以及电压限制电路。 电压限制电路限制施加在火花塞的电极之间的电压，使得电压具有在预定电压限制值内限制的绝对值。 电压限制值在第一和第二阶段彼此不同。 第一阶段被定义为初始放电峰值结束的时段，初始放电峰值最初由电能产生。 第二阶段定义为初始放电峰值结束后的一段时间。 第一级的电压限制值低于第二级的电压限制值。
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