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公开(公告)号：US10291157B2
公开(公告)日：2019-05-14
申请号：US15483229
申请日：2017-04-10
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita , Shinsuke Kawazu
Abstract: A control apparatus includes a first determination section determining whether a power-supply voltage has decreased below a first threshold value, an interruption section interrupting a current flow to an inverter if the voltage has decreased below the first threshold value, a second determination section that determining whether the power-supply voltage has increased above a second threshold value, an interruption releasing section releasing the interruption based on the fact that the voltage has increased above the second threshold value, a count section counting the number of interruptions, a limiting section determining whether the decrease in the power-supply voltage is caused by a first factor of an electric rotating machine or a second factor, and limits the counting if the decrease in the power-supply voltage is caused by the second factor, and a third determination section determining whether the interruption is allowed to be released based on the number of interruptions.
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公开(公告)号：US12301153B2
公开(公告)日：2025-05-13
申请号：US18156742
申请日：2023-01-19
Applicant: DENSO CORPORATION
Inventor： Shinsuke Kawazu
IPC: H02P1/54 , B60L3/00 , B60L50/60 , B60L58/18 , B64D27/24 , B64D33/08 , B64F5/60 , B64U50/19 , H02P5/50
Abstract: An electric movable body includes an output shaft and multiple motors that drive the output shaft. The electric movable body performs a double drive control to assign a drive state to at least two of the motors, performs, when the double drive control is performed and on determination that one of the motors is abnormal, a single drive control to assign the drive state to only one of the motors and to assign a stop state to another of the motors, and identifies, when the single drive control is performed, a drive motor, to which the drive state is assigned and which is abnormal, based on a predetermined state quantity correlated with a drive state of the drive motor.
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公开(公告)号：US11135922B2
公开(公告)日：2021-10-05
申请号：US16095395
申请日：2017-04-20
Applicant: DENSO CORPORATION
Inventor： Shinsuke Kawazu , Akira Kato , Takashi Senda
Abstract: A system includes a rotary electric machine, wiring, a battery that is connected to the rotary electric machine by the wiring, and an upper limit value setting section which sets an output upper limit value that is an upper limit of an output command for the rotary electric machine. A control apparatus which controls the rotary electric machine is provided with a temperature acquisition section which acquires the temperature of at least one of the battery and the wiring, an allowable output value calculation section which calculates an allowable output value that is the upper limit allowed for the output command of the rotary electric machine, based on the temperature that is acquired by the temperature acquisition section, and a transmitting section which transmits the allowable output value calculated by the allowable value calculation section to the upper limit value setting section.
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Patent Agency Ranking
公开(公告)号：US09977086B2
公开(公告)日：2018-05-22
申请号：US14964981
申请日：2015-12-10
Applicant: DENSO CORPORATION
Inventor： Shinsuke Kawazu , Masamitsu Shinbo
CPC classification number: G01R31/3606 , F02N11/0825 , F02N11/0848 , F02N11/0862 , F02N11/087 , F02N11/10 , F02N11/12 , F02N2200/062 , F02N2200/0801 , F02N2200/0814 , F02N2200/101 , F02N2200/102 , H02J7/1461 , H02J2001/006
Abstract: A battery monitoring apparatus is for a vehicle including a battery and a starter for starting an engine thereof by using electric power supplied from the battery. The battery monitoring apparatus includes a current obtaining section that obtains, as a discharge current value, a value of a discharge current flowing out from the battery while the engine is being started, a current determination section that determines whether or not the discharge current value is smaller than a predetermined threshold value, a start determination section that determines whether or not the engine has been started up, and a jump-start determination section that determines that the engine has been jump-started if the discharge current value is determined to be smaller than the threshold value and the engine is determined to have been started up.
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公开(公告)号：US09341124B2
公开(公告)日：2016-05-17
申请号：US14048638
申请日：2013-10-08
Applicant: DENSO CORPORATION
Inventor： Shinsuke Kawazu , Yoshinori Yamaguchi
CPC classification number: F02D31/001 , F02D41/0097 , F02D41/042 , F02D41/065 , F02D2041/0095 , F02D2200/101 , F02D2250/06 , F02N11/0844 , F02N11/0855 , F02N11/101 , F02N2200/022 , F02N2250/04 , F02N2300/2006 , Y02T10/48
Abstract: An engine speed predicting system for a vehicle includes a first calculator, a second calculator, and a switch which may be realized by software. The first calculator calculates a predicted speed of an engine of the vehicle during forward rotation of the engine when speed of the engine is decreasing after fuel stops being burned in the engine. The second calculator calculates a predicted speed of the engine during reverse rotation of the output shaft of the engine. The switch serves to select one of the first calculator and the second calculator which is to be used in calculating the predicted speed of the engine depending upon whether the predicted speed lies during the forward rotation or during the reverse rotation of the output shaft of the engine. This ensures the accuracy in predicting the speed of the engine regardless of the direction of rotation of the engine.
Abstract translation: 用于车辆的发动机速度预测系统包括可以由软件实现的第一计算器，第二计算器和开关。 第一计算器计算发动机正转期间车辆的发动机的预测速度，其中在发动机燃料停止燃烧之后发动机的速度降低。 第二计算器计算发动机的输出轴的反向旋转期间的发动机的预测速度。 该开关用于选择第一计算器和第二计算器中的一个，该计算器和第二计算器将用于计算发动机的预测速度，这取决于预测速度是在正向旋转期间还是在发动机的输出轴的反向旋转期间 。 这确保了无论发动机的旋转方向如何，预测发动机的速度的准确性。
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公开(公告)号：US20250083797A1
公开(公告)日：2025-03-13
申请号：US18956811
申请日：2024-11-22
Applicant: DENSO CORPORATION
Inventor： Yuichi TAKEMURA , Mariko Hashimoto , Shinsuke Kawazu , Jiro Hayashi , Hideaki Suzuki , Keita Fujii
IPC: B64C11/00
Abstract: A lock device can be shifted between a locked state and an unlocked state. The lock device includes a lock pin, a solenoid, and a pressing unit. The lock pin is movable between a locked position where a propeller is locked and an unlocked position where the propeller is not locked. The pressing unit presses the lock pin to the locked position by a mechanical pressing force. The solenoid includes a solenoid coil and a plunger. When the solenoid coil is energized, the plunger moves the lock pin to the unlocked position against the mechanical pressing force.
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公开(公告)号：US10608575B2
公开(公告)日：2020-03-31
申请号：US16324799
申请日：2017-08-03
Applicant: DENSO CORPORATION
Inventor： Shinsuke Kawazu
IPC: H02P29/032 , H02P29/024 , B60R16/02
Abstract: An abnormality diagnosis apparatus performs an abnormality diagnosis of a system equipped with a rotary electric machine (21). The abnormality diagnosis apparatus includes: an abnormality detection section that detects an abnormality of the system; a fail-safe processing section that, when the abnormality detection section detects an abnormality, performs a fail-safe process for controlling the rotary electric machine on a safe side; an abnormality signal generation section that, when the system is in a normal state, generates a false abnormality signal assuming that an abnormality that requires the fail-safe process has occurred; and an operation check section that performs, on the basis of the false abnormality signal generated by the abnormality signal generation section, an operation check for checking whether the fail-safe process operates normally.
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公开(公告)号：US10294880B2
公开(公告)日：2019-05-21
申请号：US15097606
申请日：2016-04-13
Applicant: DENSO CORPORATION
Inventor： Tomohiro Takizawa , Shinsuke Kawazu
Abstract: An engine control apparatus predicts the speed of an engine in a normal rotation range as a function of a loss energy in an engine rotation pulsating period and also predicts the speed of the engine in a reverse rotation range as a function of a pumping loss component and a loss energy which is derived by reversing the sign of a value of a friction component that is a portion of the loss energy in the normal rotation range and arises from mechanical friction to which the piston is subjected during stroke thereof. The pumping loss component is an energy loss occurring in the intake stroke of the engine. This calculation enhances the accuracy in predicting a future engine speed between start of a drop in speed of the engine resulting from stop of combustion of fuel and stop of rotation of the engine.
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