Patents by Inventor Ayatoshi Matsunaga
Ayatoshi Matsunaga 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: 10450989Abstract: A fuel injection device for an internal combustion engine includes: a high/low pressure fuel system configured to inject fuel into cylinders 12a to 12d through an in-cylinder injector 44; and a low pressure fuel injection system configured to inject fuel into an intake manifold 14 through an intake path injector 46. An ECU 60 incorporates: an idling stop/start unit 68 that stops the engine when an idling stop condition is satisfied, and restarts the engine when the idling stop condition is no longer satisfied; and a fuel injection control unit 70 that causes, after the idling stop condition is no longer satisfied, fuel remaining in the first fuel injection unit to be injected into the cylinder, before rotation of a crank shaft 32 starts, so that the engine 10 is automatically restarted, and causes fuel injection to be started from the second fuel injection unit when predetermined condition is satisfied.Type: GrantFiled: March 23, 2015Date of Patent: October 22, 2019Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Patent number: 9896994Abstract: Upon request for start-up of an engine, a control apparatus controls the opening/closing action of a waste gate valve in accordance with the temperature Te of the engine before cranking and, if the temperature Te of the engine is equal to or lower than a first set temperature Te1, sets the waste gate valve in an open state.Type: GrantFiled: December 10, 2015Date of Patent: February 20, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Patent number: 9885308Abstract: In a control apparatus of an engine having a first fuel injection valve for injecting fuel into an intake path of the engine, a second fuel injection valve for injecting fuel into a combustion chamber of the engine, a supercharger for supercharging intake air for the engine, and a waste gate valve for opening and closing an exhaust bypass passage for bypassing a turbine of the supercharger, the waste gate valve is controlled to act in a closing direction in response to an increase in the injection amount of fuel injected from the first fuel injection valve, in a region where the injection amount of fuel from the first fuel injection valve is larger than the injection amount of fuel from the second fuel injection valve.Type: GrantFiled: December 28, 2015Date of Patent: February 6, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Patent number: 9885293Abstract: In a control apparatus of an engine having a first fuel injection valve for injecting fuel into an intake path of the engine, a second fuel injection valve for injecting fuel into a combustion chamber of the engine, a supercharger for supercharging intake air for the engine, and a waste gate valve for opening and closing an exhaust bypass passage for bypassing a turbine of the supercharger, the waste gate valve is controlled to act in an opening direction in accordance with an increase in the injection amount of fuel injected from the second fuel injection valve, in a region where the injection amount of fuel from the second fuel injection valve is larger than the injection amount of fuel from the first fuel injection valve.Type: GrantFiled: December 28, 2015Date of Patent: February 6, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Patent number: 9879617Abstract: A control apparatus of an engine comprises: fuel injection control device that controlling injection amounts of fuel injected from a first fuel injection valve, which injects fuel into an intake path of the engine, and a second fuel injection valve, which injects fuel into a combustion chamber of the engine, in accordance with the operating state of the engine; and valve control device that changes the open/closed state of the waste gate valve in accordance with the injection amounts of fuel injected from the first fuel injection valve and the second fuel injection valve. The fuel injection control device increases the injection amount of fuel injected from the second fuel injection valve in accordance with an increase in the load or speed of the engine. The valve control device changes the open/closed state of the waste gate valve in the sequence of an opening direction, a closing direction, and an opening direction as the injection amount of fuel injected from the second fuel injection valve increases.Type: GrantFiled: December 28, 2015Date of Patent: January 30, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Publication number: 20170030287Abstract: A fuel injection device for an internal combustion engine includes: a high/low pressure fuel system (first fuel injection unit) configured to inject fuel into cylinders 12a to 12d through an in-cylinder injector 44; and a low pressure fuel injection system (second fuel injection unit) configured to inject fuel into an intake manifold 14 through an intake path injector 46. An ECU 60 incorporates: an idling stop/start unit 68 that stops the engine when an idling stop condition is satisfied, and restarts the engine when the idling stop condition is no longer satisfied; and a fuel injection control unit 70 that causes, after the idling stop condition is no longer satisfied, fuel remaining in the first fuel injection unit to be injected into the cylinder, before rotation of a crank shaft 32 starts, so that the engine 10 is automatically restarted, and causes fuel injection to be started from the second fuel injection unit when predetermined condition is satisfied.Type: ApplicationFiled: March 23, 2015Publication date: February 2, 2017Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi MATSUNAGA, Yasuo YAMAGUCHI, Shinichi MURATA
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Publication number: 20160131051Abstract: In a control apparatus of an engine having a first fuel injection valve for injecting fuel into an intake path of the engine, a second fuel injection valve for injecting fuel into a combustion chamber of the engine, a supercharger for supercharging intake air for the engine, and a waste gate valve for opening and closing an exhaust bypass passage for bypassing a turbine of the supercharger, the waste gate valve is controlled to act in an opening direction in accordance with an increase in the injection amount of fuel injected from the second fuel injection valve, in a region where the injection amount of fuel from the second fuel injection valve is larger than the injection amount of fuel from the first fuel injection valve.Type: ApplicationFiled: December 28, 2015Publication date: May 12, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Publication number: 20160108845Abstract: In a control apparatus of an engine having a first fuel injection valve for injecting fuel into an intake path of the engine, a second fuel injection valve for injecting fuel into a combustion chamber of the engine, a supercharger for supercharging intake air for the engine, and a waste gate valve for opening and closing an exhaust bypass passage for bypassing a turbine of the supercharger, the waste gate valve is controlled to act in a closing direction in response to an increase in the injection amount of fuel injected from the first fuel injection valve, in a region where the injection amount of fuel from the first fuel injection valve is larger than the injection amount of fuel from the second fuel injection valve.Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi Matsunaga, Yasuo Yamaguchi, Shinichi Murata
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Publication number: 20160108827Abstract: A control apparatus of an engine comprises: fuel injection control device that controlling injection amounts of fuel injected from a first fuel injection valve, which injects fuel into an intake path of the engine, and a second fuel injection valve, which injects fuel into a combustion chamber of the engine, in accordance with the operating state of the engine; and valve control device that changes the open/closed state of the waste gate valve in accordance with the injection amounts of fuel injected from the first fuel injection valve and the second fuel injection valve. The fuel injection control device increases the injection amount of fuel injected from the second fuel injection valve in accordance with an increase in the load or speed of the engine. The valve control device changes the open/closed state of the waste gate valve in the sequence of an opening direction, a closing direction, and an opening direction as the injection amount of fuel injected from the second fuel injection valve increases.Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi MATSUNAGA, Yasuo YAMAGUCHI, Shinichi MURATA
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Publication number: 20160097319Abstract: Upon request for start-up of an engine, a control apparatus controls the opening/closing action of a waste gate valve in accordance with the temperature Te of the engine before cranking and, if the temperature Te of the engine is equal to or lower than a first set temperature Te1, sets the waste gate valve in an open state.Type: ApplicationFiled: December 10, 2015Publication date: April 7, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Ayatoshi MATSUNAGA, Yasuo YAMAGUCHI, Shinichi MURATA
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Patent number: 9032923Abstract: An engine with a variable valve device includes cylinders each provided with a plurality of intake valves, an outer camshaft for driving first intake cams, an inner camshaft arranged coaxially with the outer camshaft for driving second intake cams, and a cam phase change mechanism arranged at one end of the outer and inner camshafts and capable of varying the phase difference between the two camshafts. A first cam sensor for detecting the rotational angle of the outer camshaft and a second cam sensor for detecting the rotational angle of the inner camshaft are arranged close to the one end of the camshafts.Type: GrantFiled: January 28, 2011Date of Patent: May 19, 2015Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Daisuke Yoshika, Ayatoshi Matsunaga
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Patent number: 8939117Abstract: In a variable valve actuation device for an internal combustion engine, a hollow boss (22b) is fitted around the outer periphery of an outer camshaft (15a) and protrudes from one side of a second cam (22a) located opposite a first cam (20) in the width direction of the second cam over a distance greater than the width of the second cam, in order to suppress misalignment of the boss.Type: GrantFiled: December 3, 2010Date of Patent: January 27, 2015Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Daisuke Yoshika, Ayatoshi Matsunaga
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Patent number: 8607748Abstract: In an engine equipped with a variable valvetrain including a second cam phase alteration mechanism 31 for altering the phase of second intake cams 12 actuating second intake valves, relative to a crankshaft, the second cam phase alteration mechanism 31 is arranged at an end opposite to an end at which a cam sprocket is provided to receive power from the crankshaft, to be located outside a cylinder head 2, and an actuator cover 40 is fixed to the cylinder head 2 to cover at least a lower portion of the second cam phase alteration mechanism 31.Type: GrantFiled: December 20, 2010Date of Patent: December 17, 2013Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Ayatoshi Matsunaga, Shinichi Murata, Daisuke Yoshika
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Patent number: 8573169Abstract: A variable valve device of the invention has a structure in which, as connecting means for connecting a movable cam 22 located in an outer periphery of an outer camshaft 17a and an inner camshaft 17b located inside the outer camshaft 17a, there are provided a pin-like member 24 that is movably inserted so as to penetrate the movable cam 22, the outer camshaft 17a and the inner camshaft 17b along a diametrical direction of a shaft member 17 that is formed by turnably encasing the inner camshaft 17b in the outer camshaft 17a, and an escape-preventing portion 50 disposed in the end portion of the pin-like member 24. The movable cam 22 and the inner camshaft 17b are thus connected together while preventing large press-fit load and axial force from acting on components.Type: GrantFiled: December 20, 2010Date of Patent: November 5, 2013Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Ayatoshi Matsunaga, Daisuke Yoshika, Katsuhiro Tanaka, Shinichi Murata
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Publication number: 20120160197Abstract: A variable valve device of the invention has a structure in which, as connecting means for connecting a movable cam 22 located in an outer periphery of an outer camshaft 17a and an inner camshaft 17b located inside the outer camshaft 17a, there are provided a pin-like member 24 that is movably inserted so as to penetrate the movable cam 22, the outer camshaft 17a and the inner camshaft 17b along a diametrical direction of a shaft member 17 that is formed by turnably encasing the inner camshaft 17b in the outer camshaft 17a, and an escape-preventing portion 50 disposed in the end portion of the pin-like member 24. The movable cam 22 and the inner camshaft 17b are thus connected together while preventing large press-fit load and axial force from acting on components.Type: ApplicationFiled: December 20, 2010Publication date: June 28, 2012Inventors: Ayatoshi Matsunaga, Daisuke Yoshita, Katzuhiko Tanaka, Shinichi Murata
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Publication number: 20120152191Abstract: In a variable valve actuation device for an internal combustion engine, a hollow boss (22b) is fitted around the outer periphery of an outer camshaft (15a) and protrudes from one side of a second cam (22a) located opposite a first cam (20) in the width direction of the second cam over a distance greater than the width of the second cam, in order to suppress misalignment of the boss.Type: ApplicationFiled: December 3, 2010Publication date: June 21, 2012Inventors: Daisuke Yoshika, Ayatoshi Matsunaga
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Publication number: 20120152192Abstract: In an engine equipped with a variable valvetrain including a second cam phase alteration mechanism 31 for altering the phase of second intake cams 12 actuating second intake valves, relative to a crankshaft, the second cam phase alteration mechanism 31 is arranged at an end opposite to an end at which a cam sprocket is provided to receive power from the crankshaft, to be located outside a cylinder head 2, and an actuator cover 40 is fixed to the cylinder head 2 to cover at least a lower portion of the second cam phase alteration mechanism 31.Type: ApplicationFiled: December 20, 2010Publication date: June 21, 2012Inventors: Ayatoshi Matsunaga, Shinichi Murata, Daisuke Yoshika
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Publication number: 20110197839Abstract: An engine with a variable valve device includes cylinders each provided with a plurality of intake valves, an outer camshaft for driving first intake cams, an inner camshaft arranged coaxially with the outer camshaft for driving second intake cams, and a cam phase change mechanism arranged at one end of the outer and inner camshafts and capable of varying the phase difference between the two camshafts. A first cam sensor for detecting the rotational angle of the outer camshaft and a second cam sensor for detecting the rotational angle of the inner camshaft are arranged close to the one end of the camshafts.Type: ApplicationFiled: January 28, 2011Publication date: August 18, 2011Inventors: Daisuke YOSHIKA, Ayatoshi Matsunaga