Patents by Inventor Takashi Senda
Takashi Senda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100217493Abstract: In an idle stop system for an engine mounted in a vehicle, when it is determined predetermined stop conditions are met, the engine is automatically stopped. During the engine stop, when it is determined that predetermined restart conditions are met, the engine is automatically restarted. Further, it is determined whether or not a predetermined period of time has elapsed since the restart of the engine. When it is determined that the predetermined period of time has elapsed, the clutch mechanism is controlled into the connection thereof at and after a time instant when it is determined that the predetermined period of time has elapsed. Hence, the connected state of the clutch mechanism is realized after a controlled delay.Type: ApplicationFiled: February 25, 2010Publication date: August 26, 2010Applicant: DENSO CORPORATIONInventors: Masayuki TOMURA, Takashi SENDA
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Patent number: 7769484Abstract: A setup information generating device for a punch press which can generate setup information on replacement of a punch and a die with compatible tools, that is, replacement among punches and dies identified by the same tool number and used for processing for the same shape and the same size and which can also generate setup information according to processing know-how or the like. The device has a setup information generating device 48 for comparing a processing schedule with tool numbers in a mounted tool information storage device 45 to generate setup information. The device has a compatible tool registering device 38 for registering processing conditions such as material quality and board thickness and information on which of plural types of punches 81 and dies 82 identified by the same tool number are compatible as a punch 81 and a die 82 which meet the processing conditions are registered in accordance with inputs from an operation panel 46.Type: GrantFiled: January 8, 2007Date of Patent: August 3, 2010Assignee: Murata Kikai Kabushiki KaishaInventors: Takashi Senda, Makoto Totsugi
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Publication number: 20100184562Abstract: A controller stops a fuel injection when a vehicle is in a specified decelerate condition where the vehicle likely stops and an automatic stop requirement is generated. An input shaft and an output shaft of a shift transmission mechanism are directly connected with each other through a direct connector so that a driving power is transmitted from an engine to a driving shaft through a power transmitter which permits a sliding between an input shaft and an output shaft thereof. When a restart requirement is generated before the vehicle is completely stopped, the engine is restarted under a condition where the input shaft and the output shaft of the shift transmission mechanism are connected with each other by a direct connector. When the restart requirement is not generated before the vehicle is completely stopped, the input shaft and the output shaft are disconnected when the vehicle is completely stopped.Type: ApplicationFiled: January 12, 2010Publication date: July 22, 2010Applicant: DENSO CORPORATIONInventors: Takashi SENDA, Akira Katoh, Kenji Kawahara
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Publication number: 20100180849Abstract: In a system, an angle sensor outputs a pulse each time an output shaft of an internal combustion engine rotates by a preset angle, and a calculator calculates speed-change information indicative of a change in a speed of rotation of the output shaft based on the pulses outputted from the angle sensor. A determiner determines, based on the speed-change information, whether at least one of the pulses outputted from the angle sensor represents a proper timing for a preset of a pinion of a starter with a ring gear mounted on the output shaft. A pinion engaging unit shifts the pinion toward the ring gear so that the pinion is engaged with the ring gear when it is determined that the at least one of the pulses outputted from the angle sensor represents the proper timing for the preset of the pinion with the ring gear.Type: ApplicationFiled: January 21, 2010Publication date: July 22, 2010Applicant: DENSO CORPORATIONInventors: Takashi SENDA, Akira KATO, Mitsuhiro MURATA, Masami NIIMI, Kenji KAWAHARA, Hideya NOTANI
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Patent number: 7710068Abstract: A power supply control apparatus for controlling an electric generator of a vehicle limits the rate of change of a power supply voltage to a predetermined variation rate range, when the change is caused by operations to control the charge condition of the vehicle battery, and controls the generated power to match the drive torque applied by the engine to the generator. When the electrical load demand changes, the generated power is controlled to limit a resultant momentary change in the power supply voltage caused by an engine response delay, while minimizing a resultant momentary amount of engine speed variation.Type: GrantFiled: June 6, 2007Date of Patent: May 4, 2010Assignee: Denso CorporationInventors: Keisuke Tani, Kazuyoshi Obayashi, Takashi Senda, Yukihiro Yamashita, Daisuke Kuroda
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Publication number: 20100083926Abstract: In a system for cranking a crankshaft of an internal combustion engine, a starter is provided with a motor working to, when energized, rotatably drive an output shaft with a pinion and an actuator working to, when energized, shift the pinion toward the ring gear to be engaged with the ring gear. A power supply is electrically connected to the motor and operative to output electrical power. A first mechanical relay is electrically connected between the power supply and the motor, and works to turn on and off a supply of a current based on the electrical power to the motor for rotating the pinion. A switching element is electrically connected across the first mechanical relay, and works to turn on and off the supply of the current to the motor for rotating the pinion.Type: ApplicationFiled: October 2, 2009Publication date: April 8, 2010Applicant: DENSO CORPORATIONInventors: Kazushige Okumoto, Akira Kato, Takashi Senda, Mitsuhiro Murata, Masami Niimi, Kiyokazu Haruno
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Publication number: 20100059007Abstract: An engine start system which may be employed in automotive idle stop systems. The engine start system includes a pinion gear to be pushed to a ring gear coupled to an engine for achieving meshing engagement with the ring gear. After the pinion gear engages the ring gear, the engine start system starts to rotate the pinion gear using a starter motor to crank the engine. Specifically, when an engine restart request is made following an engine stop request, the engine start system waits until after the speed of the engine drops below a preselected gear engageble speed and then moves the pinion gear toward the ring gear without rotating the pinion gear. This minimizes the consumption of fuel in the vehicle in supplying electric power to the starter motor and a maximum level of mechanical noise arising from the engagement of the pinion gear with the ring gear.Type: ApplicationFiled: September 8, 2009Publication date: March 11, 2010Applicant: DENSO CORPORATIONInventors: Takashi Senda, Akira Kato, Kazushige Okumoto, Mitsuhiro Murata, Masami Niimi, Kiyokazu Haruno
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Publication number: 20100050970Abstract: In a system, a starter includes a motor for rotatably driving an output shaft with a pinion and an actuator that shifts the pinion toward a ring gear to be engaged with the ring gear. A monitor unit monitors a rotational speed of the internal combustion engine. The rotational speed of the internal combustion engine drops after an automatic control for stop of the engine. When an engine restart request occurs with the rotational speed being within a preset range during the rotational speed of the internal combustion engine dropping by the automatic control for stop of the engine, a drive unit drives the actuator to shift the pinion toward the ring gear to be engaged with the ring gear. The drive unit rotatably drives the motor with the pinion being engaged with the ring gear to thereby crank the crankshaft.Type: ApplicationFiled: September 1, 2009Publication date: March 4, 2010Applicant: DENSO CORPORATIONInventors: Kazushige Okumoto, Akira Kato, Takashi Senda, Mitsuhiro Murata, Masami Niimi, Kiyokazu Haruno
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Publication number: 20090127930Abstract: An ECU in an electric power system for a vehicle controls a DC-DC converter so that an alternator transmits a residual generated electric power to a sub battery while a terminal voltage of a main battery is maintained within an optimally specified voltage range. This residual generated electric power is obtained by subtracting from a maximum generating electric power of the alternator an electric power to be consumed by electric loads and an electric power with which the main battery is charged. This can suppress any fluctuation of the voltage of electric power of the electric power system, namely, the output voltage of the alternator and the voltage of the main battery, and perform a maximum regenerative electric power generation. The sub battery is efficiently changed with the regenerative electric power.Type: ApplicationFiled: November 20, 2008Publication date: May 21, 2009Applicant: DENSO CORPORATIONInventor: Takashi SENDA
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Patent number: 7463949Abstract: A power control apparatus acquires a maximum supply amount of power, transient maximum supply amount of power, and transient minimum supply amount of power of each power supply source. The apparatus further acquires a power cost of respective power supply sources, a load-required power and a charge request power. The apparatus acquires a combination of power supply sources that minimizes specific fuel consumption and determines an allocation amount of power. Taking transient response of respective power supply sources into account, the allocation amount of power of each power supply sources is corrected to be greater than a transient minimum supply power and smaller than a transient maximum supply power.Type: GrantFiled: October 20, 2005Date of Patent: December 9, 2008Assignee: DENSO CORPORATIONInventors: Keisuke Tani, Kazuyoshi Obayashi, Takashi Senda, Hiroshi Tamura
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Patent number: 7460928Abstract: The present invention provides a setup information display device for a processing machine which enables required setup information to be easily displayed. The present invention is applied to a multi-turret type punch press or the like. A setup information display device is used for a processing machine 1 in which a plurality of tools 7 can be installed. The device includes information generating means 48 for generating setup information on the basis of a processing schedule SH and information on the tools 7 installed in the processing machine 1. The device also includes display information generating means 71 for generating information to be displayed in an information display section 47a of a display device 47. The display information generating means 71 generates, in the information display section 47a, a setup information display 81 that shows the setup information and a guide display 82 that prompts an operator to perform an operation required to show the setup information display 81.Type: GrantFiled: November 8, 2006Date of Patent: December 2, 2008Assignee: Murata Kikai Kabushiki KaishaInventors: Takashi Senda, Makoto Totsugi
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Publication number: 20080284384Abstract: The vehicle-use power supply control apparatus includes a first battery supplying electric power to a load, an alternator driven by a vehicle engine, a second electric accumulator parallel-connected to the first battery, an electric power converter performing two-way power transmission between the first and second batteries, and a power supply control unit. The power supply control includes a function of setting a target power generation efficiency index, a function of setting a target power generation amount of the alternator on the basis of the target power generation efficiency index, while referring to a map defining relationship between a power generation efficiency index and a power generation amount of the alternator, and a function of controlling an amount and a transmission direction of transmission power of the electric power converter in order that an amount of electric power generated by the alternator becomes equal to the target power generation amount.Type: ApplicationFiled: May 14, 2008Publication date: November 20, 2008Applicant: DENSO CORPORATIONInventors: Minoru Kato, Takashi Senda
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Publication number: 20080221755Abstract: The vehicle-use power supply apparatus includes an alternator driven by an engine mounted on a vehicle to generate electric power in accordance with a command value, a battery electrically connected to the alternator to be charged by the alternator, and connected to electrical loads mounted on the vehicle to apply a power supply voltage to the electrical loads. The vehicle-use power supply apparatus further includes a first function of determining, as a power generation cost, an increase amount of fuel which the engine consumes for the alternator to generate electric power, and a second function of transmitting the command value to the alternator, the second function being configured to determine the command value on the basis of the power generation cost determined by the first function such that a change rate of the power supply voltage does not exceed a predetermined limit value.Type: ApplicationFiled: February 28, 2008Publication date: September 11, 2008Applicant: DENSO CORPORATIONInventors: Takashi Senda, Keisuke Tani, Hiroaki Ono
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Publication number: 20080157539Abstract: A power supply control apparatus for controlling an electric generator of a vehicle limits the rate of change of a power supply voltage to a predetermined variation rate range, when the change is caused by operations to control the charge condition of the vehicle battery, and controls the generated power to match the drive torque applied by the engine to the generator. When the electrical load demand changes, the generated power is controlled to limit a resultant momentary change in the power supply voltage caused by an engine response delay, while minimizing a resultant momentary amount of engine speed variation.Type: ApplicationFiled: June 6, 2007Publication date: July 3, 2008Applicant: DENSO CORPORATIONInventors: Keisuke Tani, Kazuyoshi Obayashi, Takashi Senda, Yukihiro Yamashita, Daisuke Kuroda
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Patent number: 7336002Abstract: A main power source is, for example, an ordinary Pb battery. At the time of starting an engine, the main power source supplies power to a starter. The main power source is given a higher priority than an auxiliary power source to supply power to ordinary loads. The auxiliary power source is a high performance battery (e.g., Li ion battery), which has superior charge acceptance capability and better state detectability over the main power source. The auxiliary power source stores regenerative power, which is generated by a generator at the time of deceleration of a vehicle, and is used as a redundant power source for the main power source. The main power source and the auxiliary power source are connected to each other through a supply circuit, which has a DC/DC converter, and a second supply circuit, which has a switch.Type: GrantFiled: February 17, 2004Date of Patent: February 26, 2008Assignee: Denso CorporationInventors: Akira Kato, Katsunori Tanaka, Masaru Kamiya, Takashi Senda
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Patent number: 7329204Abstract: For regenerative generation at deceleration of a vehicle, a regenerative control apparatus for vehicles equipped with a lock-up clutch comprises a control unit for controlling rotary electric machine and the lock-up clutch. When the clutch is in a complete disengagement state or a slipping state at deceleration, the control unit controls the rotary electric machine to execute regenerative generation at a partial generation level lower than a regenerative generation level in a complete engagement state. When the clutch is in a complete engagement state at regenerative generation, the control unit controls the clutch so that the coupling state is transferred to a slipping state or a complete disengagement state when the number of revolutions having correlation to engine speed becomes lower than a predetermined threshold. Thus, recovering efficiency of the regenerative braking energy can be enhanced, while suppressing engine stall due to drastic increase of engine load torque.Type: GrantFiled: December 27, 2005Date of Patent: February 12, 2008Assignee: Denso CorporationInventors: Takashi Senda, Daiji Isobe
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Patent number: 7324869Abstract: The present invention provides a tool information display device for a processing machine which can display information on tools installed in appropriate parts of the processing machine, in an easy-to-understand manner. The present invention allows even the identification numbers of installed tools to be checked in an easy-to-understand manner. The present invention provides a tool information display device for a processing machine 101 having tool magazines 5, 6 on each of which a plurality of tools can be installed. The tool information display device includes tool information managing means 33 for managing information on the tools 7 installed on the tool magazines 5, 6. The tool information display device also includes installation status display means 33 for providing a display 50 of installation status of the tools which reproduces installation and arrangement of the tools on the tool magazine 5, 6 in a pseudo manner, in accordance with the information managed by the tool information managing means 33.Type: GrantFiled: October 13, 2006Date of Patent: January 29, 2008Assignee: Murata Kikai Kabushiki KaishaInventors: Takashi Senda, Makoto Totsugi
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Patent number: 7279805Abstract: A vehicle power supply system has a first battery connected to a generator, a second battery connected to an electric load and a series regulator between the first battery and the second battery. A control unit controls an input voltage of the series regulator and the output voltage of the series regulator based on a temperature of the series regulator, an output voltage of the series regulator and a load amount of the electric load. The control unit specifically controls an input upper limit voltage value of the series regulator to change an allowable value of a voltage difference between input and output of the series regulator.Type: GrantFiled: March 8, 2005Date of Patent: October 9, 2007Assignee: Denso CorporationInventors: Takashi Senda, Katsunori Tanaka, Akira Kato
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Publication number: 20070163414Abstract: The present invention provides a setup information generating device for a punch press which can generate setup information on replacement of a punch and a die with compatible tools, that is, replacement among punches and dies identified by the same tool number and used for processing for the same shape and the same size and which can also generate setup information according to processing know-how or the like. The device has setup information generating means 48 for comparing a processing schedule with tool numbers in mounted tool information storage means 45 to generate setup information. The device has compatible tool registering means 38 for registering processing conditions such as material quality and board thickness and information on which of plural types of punches 81 and dies 82 identified by the same tool number are compatible as a punch 81 and a die 82 which meet the processing conditions are registered in accordance with inputs from an operation panel 46.Type: ApplicationFiled: January 8, 2007Publication date: July 19, 2007Applicant: MURATA KIKAI KABUSHIKI KAISHAInventors: Takashi Senda, Makoto Totsugi
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Publication number: 20070124017Abstract: The present invention provides a setup information display device for a processing machine which enables required setup information to be easily displayed. The present invention is applied to a multi-turret type punch press or the like. A setup information display device is used for a processing machine 1 in which a plurality of tools 7 can be installed. The device includes information generating means 48 for generating setup information on the basis of a processing schedule SH and information on the tools 7 installed in the processing machine 1. The device also includes display information generating means 71 for generating information to be displayed in an information display section 47a of a display device 47. The display information generating means 71 generates, in the information display section 47a, a setup information display 81 that shows the setup information and a guide display 82 that prompts an operator to perform an operation required to show the setup information display 81.Type: ApplicationFiled: November 8, 2006Publication date: May 31, 2007Applicant: MURATA KIKAI KABUSHIKI KAISHAInventors: Takashi Senda, Makoto Totsugi