Patents by Inventor Atsushi Shimada
Atsushi Shimada 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: 20060271266Abstract: There is provided an engine control unit to ensure operational performance and safety performance of a vehicle by carrying out switchover of combustion according to an operating condition of a vehicle (automobile). A vehicle peripheral condition such as vehicular gap, etc., a traveling geographical state, a condition that ensures vehicle stability, etc. are acquired, and switchover of combustion, for example, switchover between compression ignition combustion and spark ignition combustion is effected correspondingly.Type: ApplicationFiled: May 30, 2006Publication date: November 30, 2006Applicant: Hitachi, Ltd.Inventors: Hiromu Kakuya, Shiro Yamaoka, Atsushi Shimada, Shinya Satou, Kunihiko Suzuki
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Patent number: 7137796Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: GrantFiled: July 9, 2004Date of Patent: November 21, 2006Assignee: Hitachi, Ltd.Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Patent number: 7128048Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: GrantFiled: March 19, 2003Date of Patent: October 31, 2006Assignee: Hitachi, Ltd.Inventors: Shiro Yamoaka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Patent number: 7127896Abstract: In an engine cogeneration system in which power generators 5 to 8 are driven by a plurality of engines 1 to 4 to thereby supply electric power to power load 22 of a general household, at the same time, heat produced by cooling each of the engines 1 to 4 and heat generated from the exhaust gas are recovered by heat exchangers 18 and 19 to be stored as hot water into a hot-water tank 20 to supply heat to heat load 21 of the general household, the amount of power to be supplied and of the amount of heat to be supplied are controlled by a number of the engines 1 to 4 and the combustion modes of these engines 1 to 4. This engine cogeneration system can follow both the head demand and power demand in a high efficiency.Type: GrantFiled: November 3, 2005Date of Patent: October 31, 2006Assignee: Hitachi, Ltd.Inventors: Atsushi Shimada, Kazumasa Ide, Shiro Yamaoka
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Patent number: 7118358Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: GrantFiled: November 4, 2005Date of Patent: October 10, 2006Assignee: Hitachi, Ltd.Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Patent number: 7055492Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: GrantFiled: April 22, 2004Date of Patent: June 6, 2006Assignee: Hitachi, Ltd.Inventors: Shiro Yamaoka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Publication number: 20060054135Abstract: In an engine cogeneration system in which power generators 5 to 8 are driven by a plurality of engines 1 to 4 to thereby supply electric power to power load 22 of a general household, at the same time, heat produced by cooling each of the engines 1 to 4 and heat generated from the exhaust gas are recovered by heat exchangers 18 and 19 to be stored as hot water into a hot-water tank 20 to supply heat to heat load 21 of the general household, the amount of power to be supplied and of the amount of heat to be supplied are controlled by a number of the engines 1 to 4 and the combustion modes of these engines 1 to 4. This engine cogeneration system can follow both the head demand and power demand in a high efficiency.Type: ApplicationFiled: November 3, 2005Publication date: March 16, 2006Applicant: HITACHI, LTD.Inventors: Atsushi Shimada, Kazumasa Ide, Shiro Yamaoka
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Publication number: 20060057010Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: ApplicationFiled: November 4, 2005Publication date: March 16, 2006Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Publication number: 20060051226Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: ApplicationFiled: November 4, 2005Publication date: March 9, 2006Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Publication number: 20050284946Abstract: The present invention provides a household cogeneration system which is adapted to a consumption power amount and a consumption heat amount of each consumer in an ordinary house and can easily handle a failure. The cogeneration system has an energy generating device constructed by: a plurality of electric/heat energy generating modules each having a jacket for sending electric energy and heat energy; a plurality of heat energy generating modules each having a jacket for sending heat energy and constructed by a mechanical power generating device and a heat pump device; and a base having a jacket for receiving the electric energy and the heat energy from the plurality of energy generating modules and supplying the energy from the modules in a lump to a consumer side.Type: ApplicationFiled: June 28, 2005Publication date: December 29, 2005Inventors: Akiyoshi Komura, Kazumasa Ide, Masahiro Watanabe, Hiroshi Kusumoto, Yusuke Kihara, Atsushi Shimada, Masatoshi Watanabe, Yoshifumi Kubo
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Patent number: 6976936Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: GrantFiled: April 22, 2004Date of Patent: December 20, 2005Assignee: Hitachi, Ltd.Inventors: Shiro Yamaoka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Patent number: 6966185Abstract: In an engine cogeneration system in which power generators 5 to 8 are driven by a plurality of engines 1 to 4 to thereby supply electric power to power load 22 of a general household, at the same time, heat produced by cooling each of the engines 1 to 4 and heat generated from the exhaust gas are recovered by heat exchangers 18 and 19 to be stored as hot water into a hot-water tank 20 to supply heat to heat load 21 of the general household, the amount of power to be supplied and of the amount of heat to be supplied are controlled by a number of the engines 1 to 4 and the combustion modes of these engines 1 to 4. This engine cogeneration system can follow both the head demand and power demand in a high efficiency.Type: GrantFiled: February 27, 2004Date of Patent: November 22, 2005Assignee: Hitachi, Ltd.Inventors: Atsushi Shimada, Kazumasa Ide, Shiro Yamaoka
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Publication number: 20050115241Abstract: In an engine cogeneration system in which power generators 5 to 8 are driven by a plurality of engines 1 to 4 to thereby supply electric power to power load 22 of a general household, at the same time, heat produced by cooling each of the engines 1 to 4 and heat generated from the exhaust gas are recovered by heat exchangers 18 and 19 to be stored as hot water into a hot-water tank 20 to supply heat to heat load 21 of the general household, the amount of power to be supplied and of the amount of heat to be supplied are controlled by a number of the engines 1 to 4 and the combustion modes of these engines 1 to 4. This engine cogeneration system can follow both the head demand and power demand in a high efficiency.Type: ApplicationFiled: February 27, 2004Publication date: June 2, 2005Applicant: Hitachi, Ltd.Inventors: Atsushi Shimada, Kazumasa Ide, Shiro Yamaoka
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Publication number: 20040247476Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: ApplicationFiled: July 9, 2004Publication date: December 9, 2004Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Publication number: 20040194754Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Applicant: Hitachi, Ltd.Inventors: Shiro Yamaoka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Publication number: 20040194759Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Applicant: Hitachi, Ltd.Inventors: Shiro Yamaoka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Patent number: 6769888Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: GrantFiled: April 21, 2003Date of Patent: August 3, 2004Assignee: Hitachi, Ltd.Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Publication number: 20040050363Abstract: In a multi-cylinder engine having a compression ignition combustion mode, a vibration detecting sensor that is preferably mounted in a cylinder block or a cylinder head is used to detect a frequency and the detected frequency is appropriately analyzed to detect or estimate a cylinder pressure peak value and peak timing for each cylinder. An amount of internal EGR, a fuel injection condition, an engine speed and the like are then controlled so as to bring each of these parameters into an appropriate range thereof. The control apparatus suppresses variations in combustion states among different cylinders and different cycles arising from unit-to-unit variations or deterioration in the engine or part-to-part variations or deterioration in a component thereof.Type: ApplicationFiled: March 19, 2003Publication date: March 18, 2004Applicant: Hitachi, Ltd.Inventors: Shiro Yamaoka, Toshiharu Nogi, Atsushi Shimada, Nobuyasu Kanekawa, Youichi Iihoshi
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Publication number: 20030190247Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: ApplicationFiled: April 21, 2003Publication date: October 9, 2003Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa
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Patent number: 6589035Abstract: There is provided a scroll compressor having high overall efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.Type: GrantFiled: October 3, 1997Date of Patent: July 8, 2003Assignee: Hitachi, Ltd.Inventors: Isamu Tsubono, Masahiro Takebayashi, Isao Hayase, Koichi Inaba, Koichi Sekiguchi, Kenichi Oshima, Atsushi Shimada, Takehiro Akizawa