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公开(公告)号：US11754011B2
公开(公告)日：2023-09-12
申请号：US17339065
申请日：2021-06-04
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba , Yusuke Shimizu , Hiroki Kakui
CPC classification number: F02D41/20 , F02D41/30 , F02D2041/2006 , F02D2041/2017 , F02D2041/2051
Abstract: An injection control device includes: a boost controller performing a boost switching control of a boost switch to charge a boost capacitor and supplying a boost power from a battery power supply; a boost voltage monitor monitoring the boost voltage; and a boost monitor timing controller setting a section from a predetermined time after an on-edge of the boost switch to an off-edge timing in a section monitor mode as a boost monitor section. The boost controller stops boosting by stopping the boost switching control when the boost voltage is equal to or higher than a boost stop threshold value in the boost monitor section.
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公开(公告)号：US08895863B2
公开(公告)日：2014-11-25
申请号：US13726827
申请日：2012-12-26
Applicant: Denso Corporation
Inventor： Masashi Inaba , Akito Itou
CPC classification number: H05K1/0201 , H05K1/0206 , H05K1/0207 , H05K2201/10166 , H05K2201/10969
Abstract: A multilayer printed circuit board includes an insulating substrate, circuit layers arranged in the insulating substrate, an electronic component, an electrode disposed on the circuit layer exposed from a surface of the insulating substrate and including a soldered portion at which a terminal of the electronic component is soldered, an internal layer conductor disposed on the circuit layer located inside the insulating substrate and defining through holes in a radial manner centering on the soldered portion, a heat releasing conductor disposed on the circuit layer next to the circuit layer on which the internal layer conductor is disposed, and connection vias inserted in the through holes and coupling the electrode and the heat releasing conductor so as to enable a heat transfer between the electrode and the heat releasing conductor. The internal layer conductor and the heat releasing conductor overlap a whole area of the soldered portion.
Abstract translation: 多层印刷电路板包括绝缘基板，布置在绝缘基板中的电路层，电子部件，设置在从绝缘基板的表面露出的电路层上的电极，并且包括焊接部分，电极部件的端子 焊接，设置在位于绝缘基板内部的电路层上的内部层导体，以以焊接部分为中心的径向方式限定通孔;布置在电路层旁边的放热导体，其中内层 布置导体，并且连接通孔插入到通孔中并联接电极和散热导体，以便能够在电极和放热导体之间传热。 内层导体和散热导体与焊接部分的整个区域重叠。
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公开(公告)号：US11591982B2
公开(公告)日：2023-02-28
申请号：US17014303
申请日：2020-09-08
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba
Abstract: A first switch designates one of energization instruction signals to designate a valve closing detection cylinder. A valve closing detection unit monitors downstream voltages of the fuel injection valves to detect occurrence of an inflection point in change of the downstream voltages and detects valve closing. A second switch designates one of the downstream voltages and designates the valve closing detection cylinder. A stage number designation unit designates a valve closing detection stage number. A valve closing time measuring unit measures a valve closing time, which is from a switching timing at which the energization instruction signal is switched from ON to OFF to a valve closing detection timing of the valve closing, for injection of the valve closing detection stage number of the valve closing detection cylinder. A valve closing time learning unit learns the valve closing time measured by the valve closing time measuring unit.
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公开(公告)号：US11454185B2
公开(公告)日：2022-09-27
申请号：US17126407
申请日：2020-12-18
Applicant: DENSO CORPORATION
Inventor： Hiroaki Shirakawa , Masashi Inaba
IPC: F02D41/20
Abstract: An injection control device includes a boost controller performing boost control of a boosted voltage generated by a booster circuit until a boosted voltage, which is generated in a boost capacitor, rises to a full-charge threshold when the boosted voltage falls below a charge start threshold. When a power interruption controller interrupts electric current supplied to the fuel injection valve by the drive unit, a regeneration unit regenerates electric current generated in the fuel injection valve to the boost capacitor of the booster circuit. The boost controller stops the boost control of the booster circuit when at least the electric current is regenerated by the regeneration unit to the boost capacitor of the booster circuit after the interruption control by the power interruption controller.
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公开(公告)号：US11448154B2
公开(公告)日：2022-09-20
申请号：US17330764
申请日：2021-05-26
Applicant: DENSO CORPORATION
Inventor： Yohei Suganuma , Masashi Inaba
Abstract: An injection control device of capable of correcting an energization time even in an S/N non-guaranteeable situation includes: an energization controller calculating an energization time correction amount based on an area correction performed by an energization time correction amount calculator regarding electric current flowing in a fuel injection valve when the fuel injection valve is electrically driven for injecting fuel; and an energization instruction time calculator correcting an energization instruction time for fuel injection in a next cycle and thereafter by using the energization instruction time correction amounts in or before a current cycle.
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Patent Agency Ranking
公开(公告)号：US11092105B2
公开(公告)日：2021-08-17
申请号：US17014302
申请日：2020-09-08
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba , Yuusuke Shimizu
Abstract: An energization instruction switch switches energization instruction signals to instruct energization of fuel injection valves. A first cylinder designation switch designates one of the energization instruction signals to designate a valve closing detection cylinder. A valve closing detection unit monitors downstream voltage of the fuel injection valve to detect occurrence of an inflection point in change of the downstream voltage to detect a valve closing. A second cylinder designation switch designates one of the downstream voltages and designates the valve closing detection cylinder. A valve closing time measuring unit measures a valve closing time, which is from a switching timing of the energization instruction signal from ON to OFF to a valve closing detection timing, for injection of the valve closing detection cylinder. A valve closing time learning unit learns the valve closing time measured by the valve closing time measuring unit.
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公开(公告)号：US10961963B2
公开(公告)日：2021-03-30
申请号：US16382549
申请日：2019-04-12
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba , Noboru Nagase , Taichi Watanabe
IPC: F02M59/46 , H03K17/082
Abstract: An injection control device controls a drive of a solenoid in a high pressure pump for pressurizing fuel to an internal combustion engine. The injection control device includes a transistor on an upstream side of a power supply path from a direct current power supply line to the solenoid and a transistor provided on a downstream side of the power supply path. The injection control device further includes a diode at a position between an upstream terminal of the solenoid and ground, a transistor arranged in parallel with the diode, and a drive controller. The drive controller drives the solenoid to an open position by switching ON the transistors on the upstream and downstream sides of the power supply path.
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公开(公告)号：US10957474B2
公开(公告)日：2021-03-23
申请号：US16382438
申请日：2019-04-12
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba , Noboru Nagase , Taichi Watanabe
Abstract: An injection control device controls a solenoid in a fuel injection valve. The injection control device includes a transistor on an upstream side of a first power supply path to the solenoid, and a transistor on an upstream side of a second power supply path to the solenoid. The injection control device has another transistor with a body diode arranged in parallel at a position between an upstream terminal of the solenoid and ground. The injection control device also includes a transistor on the downstream side of the first and second power supply paths. A drive controller in the injection control device drives the solenoid to an open position by switching ON the transistor on the downstream side and one of the transistors on the upstream side power supply paths.
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公开(公告)号：US11808228B2
公开(公告)日：2023-11-07
申请号：US17341981
申请日：2021-06-08
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba
CPC classification number: F02D41/20 , F02D41/22 , F02D2041/2006 , F02D2041/2017 , F02D2041/2048 , F02D2041/2068
Abstract: An injection control device includes: a boost controller charging a boost capacitor by performing a boost switching control of a boost switch, and supplying a boost power from a battery power source; and a boost voltage monitor monitors a boost voltage. The boost controller measures a number of times of when the boost voltage becomes equal to or higher than a predetermined value due to a boost current flowing into the boost capacitor, causing a jump of the boost voltage during a time between a start and stop of boosting, and determines deterioration of the boost capacitor by comparing the measured number of times (i.e., the number of jumps) with a predetermined number of times.
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公开(公告)号：US11585306B2
公开(公告)日：2023-02-21
申请号：US17540755
申请日：2021-12-02
Applicant: DENSO CORPORATION
Inventor： Masashi Inaba
Abstract: An injection control device includes an injector and a detection unit. The injector includes: an injection hole; a movable part; a seat portion; a valve housing; a magnetic field application unit; and a detection sensor. The movable part opens and closes the injection hole by reciprocal movement. The seat portion when seated by the movable part closes the injection hole, and when the movable part lifted therefrom opens the injection hole. The valve housing accommodates the movable part in a reciprocally movable manner. The magnetic field application unit is installed on an outer circumference of the valve housing and applies a magnetic field to the movable part and the valve housing. The detection sensor outputs a detection signal according to a size of a distance between the valve housing and the movable part.
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