Patents by Inventor Susumu Kojima
Susumu Kojima 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: 20140163843Abstract: A drive circuit (52) that is commonly provided with respect to two fuel injection valves (24R and 24L) for the same cylinder, and drive the two fuel injection valves (24R and 24L) for the same cylinder on the basis of a command from an ECU (40), is provided. An electric conduction line (52) that electric current supplied to the two fuel injection valves (24R and 24L) flows through, is provided. The electric conduction line (52) includes a common section (56a) one end of which is connected to the drive circuit (52), and branch sections (56b) which are sections following the other end of the common section (56a) that the electric conduction line (56) branches off at and on which the two fuel injection valves (24R and 24L) for the same cylinder are respectively installed. The electric current value I flowing through the common section (56a) is detected. An electric resistance (58) that is inserted in the branch section (56b) for the fuel injection valve (24L), is provided.Type: ApplicationFiled: September 2, 2011Publication date: June 12, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Kojima
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Publication number: 20140123955Abstract: A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery pressure of a low pressure fuel pump is caused to decrease when an amount of change per unit time of an integral term shows a decreasing tendency or zero, whereas the delivery pressure of the low pressure fuel pump is caused to increase when the amount of change per unit time of the integral term shows an increasing tendency. In cases where an increase in the integral term resulting from a change in the target delivery pressure of the high pressure fuel pump has occurred, the increase in the delivery pressure of the low pressure fuel pump is prohibited.Type: ApplicationFiled: July 1, 2011Publication date: May 8, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Kojima
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Publication number: 20140116394Abstract: A fuel supply system for an internal combustion engine includes a heat exchanger that has a heat exchanging wall between a liquefied fuel passage and an engine coolant passage. Heated and vaporized fuel flowing out from the liquefied fuel passage of the heat exchanger is supplied to the internal combustion engine. A flow rate of liquefied fuel supplied to the liquefied fuel passage of the heat exchanger is set. A flow rate of engine coolant supplied to the engine coolant passage of the heat exchanger is determined on the basis of a temperature of the engine coolant supplied to the engine coolant passage of the heat exchanger such that nucleate boiling or transition boiling of the liquefied fuel in the set flow rate occurs near a boundary between nucleate boiling and transition boiling in the liquefied fuel passage.Type: ApplicationFiled: May 31, 2012Publication date: May 1, 2014Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA, NIPPON SOKEN, INC.Inventors: Hideaki Kosuge, Susumu Kojima, Rio Shimizu, Tomojiro Sugimoto, Masayuki Akita, Jin Tanaka, Makoto Nakagawa, Masaki Ikeya
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Publication number: 20140084502Abstract: A purpose is to provide a method for producing a wafer lens and a device, capable of forming a wafer lens provided with a plurality of optical elements having intended properties. In order to adjust the gap between a molding die 91 and a transparent substrate 95, a positioning device 50 provided independently of the molding die 91 is used, and thus provision of a gap-adjusting projection in the molding die 91 becomes unnecessary and the thickness of an optical element 15 based on an optical surface Pd can be set regardless of the thickness of the transparent substrate 95. Consequently, there can be formed a wafer lens WL provided with a plurality of optical elements 15 having intended properties.Type: ApplicationFiled: May 23, 2012Publication date: March 27, 2014Applicant: KONICA MINOLTA, INC.Inventors: Susumu Kojima, Nobuhiro Saruya
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Publication number: 20140053812Abstract: An object of the invention is to detect, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump, a failure in the fuel injection system including the high pressure fuel pump with high accuracy. To achieve the object, in the fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump according to the invention, when a discharge failure in the high pressure fuel pump is detected, the discharge pressure of the low pressure fuel pump is increased. Then, it is determined whether a discharge failure in the high pressure fuel pump occurs or not. If occurs, it is concluded that the fuel injection system including the high pressure fuel pump is in failure.Type: ApplicationFiled: April 27, 2011Publication date: February 27, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Kojima
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Publication number: 20130298872Abstract: An object of the invention is to provide a technology enabling to determine the saturation vapor pressure of used fuel in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. In the invention, to achieve the object, in the fuel injection control system for an internal combustion engine that controls the duty cycle of the high pressure fuel pump by proportional-integral control based on the difference between the discharge pressure of the high pressure fuel pump and a target pressure, generation of vapor is detected based on a tendency of change in an integral term used in the proportional integral control, and the saturation vapor pressure of used fuel is calculated from the fuel temperature and the engine speed at that time.Type: ApplicationFiled: January 18, 2011Publication date: November 14, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Kojima, Keisuke Komori
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Patent number: 8561578Abstract: A hydrogen generator provided with a cracker which cracks a compound containing hydrogen atoms and nitrogen atoms to generate hydrogen, a compound feeder which feeds the compound to the cracker, and an oxygen feeder which feeds oxygen to the cracker. The cracker includes catalyst particles which promote the cracking of the compound and catalyst particles which promote the oxidation of the compound. The cracker is fed with the compound and oxygen, causes the compound to oxidize to generate heat of oxidation, and uses the generated heat of oxidation to crack the compound.Type: GrantFiled: December 30, 2010Date of Patent: October 22, 2013Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Hiroshi Miyagawa, Makoto Koike, Susumu Kojima, Tomojiro Sugimoto, Rioh Shimizu, Norihiko Nakamura
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Publication number: 20130166173Abstract: Disclosed is a vehicle control apparatus that can concurrently achieve an improved drivability and an excellent restart performance of an internal combustion engine. The vehicle control apparatus includes an eco-run system that automatically stops the engine when an automatic stop condition is established and restarts the engine when a restart condition is established, a throttle motor that opens and closes a throttle valve adjusting air amount to be sucked into the engine, and a vehicle speed sensor that detects the vehicle speed. The vehicle control apparatus is adapted to control the throttle motor to enlarge the throttle valve opening degree in response to the higher vehicle speed, according to the vehicle speed information from the vehicle speed sensor (Step S3 to Step S7), when the engine is automatically stopped while the vehicle is travelling (Step S2).Type: ApplicationFiled: October 28, 2011Publication date: June 27, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukihiko Ideshio, Susumu Kojima, Naoki Nakanishi, Akihiro Sato
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Publication number: 20130138327Abstract: An object of the invention is to provide a technology that enables to make the feed pressure as low as possible without inviting a misfire or a deviation of the air-fuel ratio, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. According to the invention, to achieve the object, in a fuel injection control system for an internal combustion engine in which fuel discharged from a low pressure fuel pump is supplied to a fuel injection valve with its pressure boosted by a high pressure fuel pump, while a lowering process of lowering feed pressure or the discharge pressure of a the low pressure fuel pump, the lowering process is suspended and restarted with reference to the tendency of change in an integral term used in a proportional-integral control of the duty cycle of the high pressure fuel pump.Type: ApplicationFiled: October 27, 2010Publication date: May 30, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Susumu Kojima
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Publication number: 20130118458Abstract: A fuel feed system which causes liquid fuel to evaporate so as to feed gaseous fuel, provided with an evaporator which includes a heater which heats the liquid fuel to vaporize it and an electric heater which adjusts the temperature of the heater. The heater has a heat conduction surface which supplies heat to the liquid fuel. A difference between the temperature of the heat conduction surface of the heater and the boiling point of the fuel at the evaporator is used as the basis to change the temperature of the heater and adjust the heat flux at the heat conduction surface.Type: ApplicationFiled: September 13, 2010Publication date: May 16, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN INDUSTRY CO., LTD., NIPPON SOKEN, INC.Inventors: Susumu Kojima, Rio Shimizu, Tomojiro Sugimoto, Jun Yamada, Kazuhiro Yonesige, Makoto Nakagawa
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Patent number: 8421378Abstract: A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided. A CPU lights or extinguishes a display unit after the end of an interrupt event in accordance with a lighting state (lighting, dim-lighting, being unlighted) of the display unit when the occurrence of the interrupt event is detected. It is therefore possible for the CPU to perform appropriate display control according to the lighting state when an interrupt event occurs.Type: GrantFiled: September 15, 2011Date of Patent: April 16, 2013Assignee: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Susumu Kojima, Mitsuru Hamada
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Publication number: 20120167840Abstract: A hydrogen generator provided with a cracker which cracks a compound containing hydrogen atoms and nitrogen atoms to generate hydrogen, a compound feeder which feeds the compound to the cracker, and an oxygen feeder which feeds oxygen to the cracker. The cracker includes catalyst particles which promote the cracking of the compound and catalyst particles which promote the oxidation of the compound. The cracker is fed with the compound and oxygen, causes the compound to oxidize to generate heat of oxidation, and uses the generated heat of oxidation to crack the compound.Type: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Hiroshi MIYAGAWA, Makoto KOIKE, Susumu KOJIMA, Tomojiro SUGIMOTO, Rioh SHIMIZU, Norihiko NAKAMURA
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Publication number: 20120164387Abstract: In the present invention, provided is a molding die with which shape of the molding die can be reliably transferred to a molded material, even though precision molding is conducted at a shape error of 1.0 ?m or less. This molding die possesses a glass substrate, at least one resin die formed on the glass substrate, and an inorganic oxide film to cover the glass substrate and the at least one resin, wherein the at least one resin die made of a photo-curable resin has a light transmittance of 20% or more with respect to light having a wavelength of 365 nm and has a hardness of 30-90 in terms of shore D, and the molding die comprises the inorganic oxide film having been subjected to a mold-releasing treatment.Type: ApplicationFiled: August 19, 2010Publication date: June 28, 2012Inventors: Daisuke Watanabe, Susumu KOJIMA
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Patent number: 8151779Abstract: Liquid ammonia is fed from an ammonia storage tank to a vaporizer where it is vaporized. Gaseous ammonia vaporized inside the vaporizer is on the one hand injected from an ammonia injector and on the other hand reformed by a reformer, then injected from a reformed gas injector. The amount of liquid ammonia fed into the vaporizer is made to become equal to the amount of ammonia fed into the combustion chamber in the form of gaseous fuel by control of the amount of feed of the liquid ammonia to the vaporizer.Type: GrantFiled: March 25, 2010Date of Patent: April 10, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keisuke Hagiwara, Susumu Kojima
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Patent number: 8129925Abstract: A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided. A CPU lights or extinguishes a display unit after the end of an interrupt event in accordance with a lighting state (lighting, dim-lighting, being unlighted) of the display unit when the occurrence of the interrupt event is detected. It is therefore possible for the CPU to perform appropriate display control according to the lighting state when an interrupt event occurs.Type: GrantFiled: November 13, 2008Date of Patent: March 6, 2012Assignee: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Susumu Kojima, Mitsuru Hamada
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Publication number: 20120044003Abstract: A skew adjustment circuit, provided in an integrated circuit device having a plurality of signal lines transmitting a plurality of signals respectively, and a plurality of buffer circuits to which a plurality of signals transmitted through the signal lines are respectively input, has: a plurality of delay circuits, respectively provided in stages preceding the buffer circuits; a monitoring circuit monitoring changes in the signals of the plurality of signal lines; and a delay adjustment circuit, which decides delay amounts for the plurality of delay circuits based on a monitoring result output of the monitoring circuit, and sets the delay amounts in the plurality of delay circuits. The monitoring circuit detects, as the monitoring result, a number of signal changes in the signal lines in which a signal change occurs in a monitoring period, and the delay adjustment circuit decides the delay amounts based on the number of signal changes.Type: ApplicationFiled: July 8, 2011Publication date: February 23, 2012Applicant: FUJITSU SEMICONDUCTOR LIMITEDInventors: Atsushi ITOU, Susumu KOJIMA
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Publication number: 20120007524Abstract: A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided. A CPU lights or extinguishes a display unit after the end of an interrupt event in accordance with a lighting state (lighting, dim-lighting, being unlighted) of the display unit when the occurrence of the interrupt event is detected. It is therefore possible for the CPU to perform appropriate display control according to the lighting state when an interrupt event occurs.Type: ApplicationFiled: September 15, 2011Publication date: January 12, 2012Inventors: Susumu KOJIMA, Mitsuru HAMADA
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Publication number: 20110265463Abstract: An internal combustion engine in which ammonia which is fed into a combustion chamber is ignited by an ignition device which is arranged in the combustion chamber. As this ignition device, at least one plasma jet ignition plug which emits a plasma jet or a plurality of spark plugs which generate sparks are used.Type: ApplicationFiled: January 8, 2010Publication date: November 3, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Kojima, Norihiko Nakamura, Rio Shimizu, Tomojiro Sugimoto, Kyoung-Oh Kim
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Publication number: 20110265464Abstract: Inside an engine compartment of a vehicle, an ammonia concentration sensor is arranged above a liquid ammonia injector which is attached to an internal combustion engine body and to the rear in a direction of progression of the vehicle. An ammonia concentration which is detected by the ammonia concentration sensor is used as the basis to judge if ammonia is leaked.Type: ApplicationFiled: January 13, 2010Publication date: November 3, 2011Applicants: AISAN INDUSTRY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Kojima, Rio Shimizu, Tomojiro Sugimoto, Ryo Michikawauchi, Hikaru Kikuta, Kazunori Ishii, Mutsumi Tsujino, Tsuneaki Aoki, Keiso Takeda
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Publication number: 20110162622Abstract: In a fuel supply apparatus for an internal combustion engine, fuel is delivered to a high pressure fuel pump driven by an internal combustion engine, using an electrically-operated low pressure fuel pump, and the fuel pressurized by the high pressure fuel pump is supplied to the internal combustion engine. The fuel supply apparatus includes a low pressure pump control portion that controls the low pressure fuel pump to avoid a discharge failure in the high pressure fuel pump due to insufficiency of a feed pressure at which the low pressure fuel pump delivers the fuel to the high pressure fuel pump. The low pressure pump control portion stops the low pressure fuel pump in a case where the discharge failure in the high pressure fuel pump is avoided even when the feed pressure is equal to a gauge pressure of 0.Type: ApplicationFiled: September 18, 2009Publication date: July 7, 2011Inventors: Susumu Kojima, Tomojiro Sugimoto