Patents by Inventor Atsushi Mitsuhori
Atsushi Mitsuhori 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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Patent number: 8402935Abstract: An engine starting control apparatus is basically provided with a motor control section, a valve timing control section and a start control section. The motor control section is configured to operate an electric motor to crank an engine with an output of the electric motor being adjustable. The valve timing control section is configured to operate a variable valve operating mechanism when the engine is started to change at least a close timing of an intake valve of the engine from an initial timing to a start timing such that the start timing is set closer to an intake bottom dead center during a single engine start as compared to the initial timing. The start control section is configured to adjust the output of the electric motor as the close timing of the intake valve changes from the initial timing to the start timing during the single engine start.Type: GrantFiled: March 9, 2012Date of Patent: March 26, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Takatsugu Katayama, Masahiko Yuya, Naoki Osada, Atsushi Mitsuhori, Hatsuki Morinaga, Makoto Shoji
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Publication number: 20120160201Abstract: An engine starting control apparatus is basically provided with a motor control section, a valve timing control section and a start control section. The motor control section is configured to operate an electric motor to crank an engine with an output of the electric motor being adjustable. The valve timing control section is configured to operate a variable valve operating mechanism when the engine is started to change at least a close timing of an intake valve of the engine from an initial timing to a start timing such that the start timing is set closer to an intake bottom dead center during a single engine start as compared to the initial timing. The start control section is configured to adjust the output of the electric motor as the close timing of the intake valve changes from the initial timing to the start timing during the single engine start.Type: ApplicationFiled: March 9, 2012Publication date: June 28, 2012Applicant: NISSAN MOTOR CO., LTD.Inventors: Takatsugu KATAYAMA, Masahiko YUYA, Naoki OSADA, Atsushi MITSUHORI, Hatsuki MORINAGA, Makoto SHOJI
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Patent number: 8205589Abstract: An engine starting control apparatus is basically provided with a motor control section, a valve timing control section and a start control section. The motor control section is configured to operate an electric motor to crank an engine with an output of the electric motor being adjustable. The valve timing control section is configured to operate a variable valve operating mechanism when the engine is started to change at least a close timing of an intake valve of the engine from an initial timing corresponding to a state in which the engine is stopped to a start timing for starting the engine. The start control section is configured to adjust the output of the electric motor as the close timing of the intake valve changes from the initial timing to the start timing.Type: GrantFiled: January 7, 2008Date of Patent: June 26, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Takatsugu Katayama, Masahiko Yuya, Naoki Osada, Atsushi Mitsuhori, Hatsuki Morinaga, Makoto Shoji
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Publication number: 20110061628Abstract: An internal combustion engine is ignition-combustion started with or without cranking by controlling the ignition-combustion based on combustion chamber pressure, or engine temperature, or piston position, or the time elapsed since the engine was stopped, or a combination of these considerations.Type: ApplicationFiled: December 28, 2005Publication date: March 17, 2011Applicant: NISSAN MOTOR CO., LTD.Inventors: Hidehiro Fujita, Naoki Osada, Yoshitaka Matsuki, Masahiko Yuya, Atsushi Mitsuhori, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Patent number: 7415955Abstract: In one aspect, an internal combustion engine includes a fuel injector for injecting fuel into a combustion chamber to produce an air-fuel mixture in the combustion chamber, a spark plug for igniting the air-fuel mixture to cause combustion in the combustion chamber and a controller controls the spark plug to cause combustion in the combustion chamber to apply a torque to start the engine from a stopped condition. The controller determines whether the operation of the engine will be stopped, and adjusts an operating condition of the engine if the controller determines the engine operation will be stopped.Type: GrantFiled: January 17, 2006Date of Patent: August 26, 2008Assignee: Nissan Motor Co., Ltd.Inventors: Yoshitaka Matsuki, Naoki Osada, Hidehiro Fujita, Masahiko Yuuya, Atsushi Mitsuhori, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Publication number: 20080168959Abstract: An engine starting control apparatus is basically provided with a motor control section, a valve timing control section and a start control section. The motor control section is configured to operate an electric motor to crank an engine with an output of the electric motor being adjustable. The valve timing control section is configured to operate a variable valve operating mechanism when the engine is started to change at least a close timing of an intake valve of the engine from an initial timing corresponding to a state in which the engine is stopped to a start timing for starting the engine. The start control section is configured to adjust the output of the electric motor as the close timing of the intake valve changes from the initial timing to the start timing.Type: ApplicationFiled: January 7, 2008Publication date: July 17, 2008Applicant: NISSAN MOTOR CO., LTD.Inventors: Takatsugu KATAYAMA, Masahiko YUYA, Naoki OSADA, Atsushi MITSUHORI, Hatsuki MORINAGA, Makoto SHOJI
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Patent number: 7357109Abstract: Embodiments are disclosed to reliably carry out engine starting without cranking. Using an internal combustion engine 1, when an idle stop condition is established, a third path switching valve 28 that is provided at the connection of the compressed air supply path 25 and a first blow-by path 21, and a blow-by control valve 24 are “closed”. The connection of the crankcase to the inlet path 14 is blocked, idling for a designated time is carried out, and finally the engine is stopped. On the other hand, when the idle stop release condition is established, an inlet valve 8 is “opened”, and the first to third path switching valves 26 to 28 are “closed”, thereby operating a compressor 17 for a designated period of time. Compressed air is thereby supplied to the combustion chamber 2 and the crankcase via the compressed air supply path 25, allowing an increase in the internal cylinder pressure. Finally, the engine is started.Type: GrantFiled: December 27, 2005Date of Patent: April 15, 2008Assignee: Nissan Motor Co., Ltd.Inventors: Atsushi Mitsuhori, Naoki Osada, Hidehiro Fujita, Yoshitaka Matsuki, Masahiko Yuuya, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Patent number: 7308880Abstract: A starting system rotates and starts an internal combustion engine by injecting fuel into a predetermined cylinder using an injector and igniting the fuel using an ignition plug, and upon starting the engine, the fuel pressure supplied to the injector is detected, and the engine is started by combustion in the predetermined cylinder only when the detected pressure is at or greater than the predetermined pressure, thereby guaranteeing the fuel pressure when combustion starting is employed, and consequently the engine can be securely started.Type: GrantFiled: February 3, 2006Date of Patent: December 18, 2007Assignee: Nissan Motor Co., Ltd.Inventors: Takatsugu Katayama, Naoki Osada, Yoshitaka Matsuki, Hidehiro Fujita, Masahiko Yuuya, Atsushi Mitsuhori, Tadanori Yanai, Shouta Hamane
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Patent number: 7237521Abstract: An engine starting method includes maintaining a rotation speed of a crankshaft of an engine rotated by a motor at a first rotation speed, supplying fuel to the engine and igniting the fuel while the crankshaft is rotated by the motor at the first rotation speed, determining whether the fuel has been ignited in the engine, and maintaining the rotation speed of the crankshaft rotated at least by the motor at a second rotation speed that is greater than the first rotation speed upon determining that the fuel has been ignited.Type: GrantFiled: July 5, 2006Date of Patent: July 3, 2007Assignee: Nissan Motor Co., Ltd.Inventors: Masahiko Yuya, Atsushi Mitsuhori, Takatsugu Katayama
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Patent number: 7233856Abstract: An internal combustion engine and control method therefor in which the engine is selectively started by combustion without cranking. The temperature in the combustion chamber of an engine cylinder is stabilized upon starting of the engine, thereby allowing secured staring without cranking. When predetermined idling stop conditions (or engine stop conditions) are established, the temperature in the combustion chamber is estimated based on engine operating conditions read before such establishment, and the period of maintaining a engine rotational speed in a predetermined low range before stopping the engine is calculated or estimated based on the estimated temperature in the combustion chamber. The engine is then stopped after the calculated or estimated period of maintaining the engine rotational speed in the predetermined low range.Type: GrantFiled: December 27, 2005Date of Patent: June 19, 2007Assignee: Nissaan Motor Co., Ltd.Inventors: Masahiko Yuya, Naoki Osada, Yoshitaka Matsuki, Hidehiro Fujita, Atsushi Mitsuhori, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Publication number: 20070028880Abstract: An engine starting method includes maintaining a rotation speed of a crankshaft of an engine rotated by a motor at a first rotation speed, supplying fuel to the engine and igniting the fuel while the crankshaft is rotated by the motor at the first rotation speed, determining whether the fuel has been ignited in the engine, and maintaining the rotation speed of the crankshaft rotated at least by the motor at a second rotation speed that is greater than the first rotation speed upon determining that the fuel has been ignited.Type: ApplicationFiled: July 5, 2006Publication date: February 8, 2007Applicant: Nissan Motor Co., Ltd.Inventors: Masahiko Yuya, Atsushi Mitsuhori, Takatsugu Katayama
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Publication number: 20060196460Abstract: A method and system for starting an internal combustion engine by utilizing combustion energy produced by injecting and igniting fuel in an engine cylinder under the expansion stroke, which can eliminate the necessity of precisely computing the combustion energy, can minimize an amount of energy, other than the combustion energy, supplied from a second energy supply unit, and can realize stable engine startup without causing a startup failure due to a combustion failure. At startup of the engine, energy is supplied to the engine from both a first energy supply unit performing direct injection and ignition of fuel, etc. and a second energy supply unit employing, e.g., a starter motor, thereby starting the engine. After the engine has started motion, the motion status of the engine is determined based on, e.g., the engine revolution speed, and the energy supply to the engine from the second energy supply unit is stopped based on a determination result.Type: ApplicationFiled: March 1, 2006Publication date: September 7, 2006Applicants: HITACHI, LTD., NISSAN MOTOR CO., LTD.Inventors: Eiichi Ohtsu, Takashi Okada, Tadatsugu Udono, Minoru Ohsuga, Naoki Osada, Masahiko Yuuya, Atsushi Mitsuhori, Hidehiro Fujita
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Publication number: 20060185637Abstract: Embodiments are disclosed to reliably carry out engine starting without cranking. Using an internal combustion engine 1, when an idle stop condition is established, a third path switching valve 28 that is provided at the connection of the compressed air supply path 25 and a first blow-by path 21, and a blow-by control valve 24 are “closed”. The connection of the crankcase to the inlet path 14 is blocked, idling for a designated time is carried out, and finally the engine is stopped. On the other hand, when the idle stop release condition is established, an inlet valve 8 is “opened”, and the first to third path switching valves 26 to 28 are “closed”, thereby operating a compressor 17 for a designated period of time. Compressed air is thereby supplied to the combustion chamber 2 and the crankcase via the compressed air supply path 25, allowing an increase in the internal cylinder pressure. Finally, the engine is started.Type: ApplicationFiled: December 27, 2005Publication date: August 24, 2006Inventors: Atsushi Mitsuhori, Naoki Osada, Hidehiro Fujita, Yoshitaka Matsuki, Masahiko Yuuya, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Publication number: 20060180112Abstract: A starting system rotates and starts an internal combustion engine by injecting fuel into a predetermined cylinder using an injector and igniting the fuel using an ignition plug, and upon starting the engine, the fuel pressure supplied to the injector is detected, and the engine is started by combustion in the predetermined cylinder only when the detected pressure is at or greater than the predetermined pressure, thereby guaranteeing the fuel pressure when combustion starting is employed, and consequently the engine can be securely started.Type: ApplicationFiled: February 3, 2006Publication date: August 17, 2006Inventors: Takatsugu Katayama, Naoki Osada, Yoshitaka Matsuki, Hidehiro Fujita, Masahiko Yuuya, Atsushi Mitsuhori, Tadanori Yanai, Shouta Hamane
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Publication number: 20060157023Abstract: In one aspect, an internal combustion engine includes a fuel injector for injecting fuel into a combustion chamber to produce an air-fuel mixture in the combustion chamber, a spark plug for igniting the air-fuel mixture to cause combustion in the combustion chamber and a controller controls the spark plug to cause combustion in the combustion chamber to apply a torque to start the engine from a stopped condition. The controller determines whether the operation of the engine will be stopped, and adjusts an operating condition of the engine if the controller determines the engine operation will be stopped.Type: ApplicationFiled: January 17, 2006Publication date: July 20, 2006Inventors: Yoshitaka Matsuki, Naoki Osada, Hidehiro Fujita, Masahiko Yuuya, Atsushi Mitsuhori, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane
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Publication number: 20060142928Abstract: An internal combustion engine and control method therefor in which the engine is selectively started by combustion without cranking. The temperature in the combustion chamber of an engine cylinder is stabilized upon starting of the engine, thereby allowing secured staring without cranking. When predetermined idling stop conditions (or engine stop conditions) are established, the temperature in the combustion chamber is estimated based on engine operating conditions read before such establishment, and the period of maintaining a engine rotational speed in a predetermined low range before stopping the engine is calculated or estimated based on the estimated temperature in the combustion chamber. The engine is then stopped after the calculated or estimated period of maintaining the engine rotational speed in the predetermined low range.Type: ApplicationFiled: December 27, 2005Publication date: June 29, 2006Inventors: Masahiko Yuya, Naoki Osada, Yoshitaka Matsuki, Hidehiro Fujita, Atsushi Mitsuhori, Tadanori Yanai, Takatsugu Katayama, Shouta Hamane