Patents by Inventor Seiichi FUJIMOTO
Seiichi FUJIMOTO 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).
-
Patent number: 11280275Abstract: An internal combustion engine includes an internal combustion engine body including an intake valve and an exhaust valve, and a controller configured or programmed to perform a control to set a rotational speed of the internal combustion engine body to a predetermined rotational speed based on an environmental temperature at a time of starting the internal combustion engine body, and perform a control to drive the internal combustion engine body at the set predetermined rotational speed during a time period until when fuel is supplied to a combustion chamber of the internal combustion engine body and first ignition is performed.Type: GrantFiled: July 10, 2019Date of Patent: March 22, 2022Assignee: AISIN CORPORATIONInventors: Seiichi Fujimoto, Tomohiro Kozaki, Masaaki Kaneko, Suguru Kamiya, Atsushi Hanaura, Tatsuki Okude, Tomoaki Fukao
-
Patent number: 11181050Abstract: A driving-side rotating body that rotates synchronously with a crankshaft of an internal combustion engine, a driven-side rotating body that is allowed to rotate relative to the driven-side rotating body and that rotates integrally with a camshaft that opens and closes an intake valve, and a phase adjustment mechanism for setting a relative rotation phase of the driving-side rotating body and the driven-side rotating body using a driving force of an electric motor are included. The phase adjustment mechanism is configured to be able to execute retarding control for setting the relative rotation phase to the retarding side until reaching a phase in which the internal combustion engine cannot be started and autonomous running is not possible even if fuel injection and ignition are performed in the internal combustion engine.Type: GrantFiled: June 7, 2019Date of Patent: November 23, 2021Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Tomohiro Kozaki, Seiichi Fujimoto, Masaaki Kaneko, Tatsuki Okude, Tomoaki Fukao
-
Patent number: 11156170Abstract: A control device for an internal combustion engine includes an internal combustion engine and a valve opening-closing timing control device. The valve opening-closing timing control device has a phase adjustment mechanism for setting a relative rotation phase of a driving-side rotator and a driven-side rotator. The phase adjustment mechanism overlaps a timing of opening an intake valve with a timing of opening an exhaust valve, by setting, in a predetermined period, the relative rotation phase such that the exhaust valve closes after a top dead center position has been reached, and a bypass passage is provided that connects an exhaust passage of one cylinder that is in an exhaust process to the exhaust passage of another cylinder that is in an intake process at the same time as the exhaust process.Type: GrantFiled: February 28, 2018Date of Patent: October 26, 2021Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi Fujimoto, Masaaki Kaneko, Hirokazu Tanaka, Suguru Kamiya, Kohei Fujii
-
Publication number: 20210270194Abstract: A driving-side rotating body that rotates synchronously with a crankshaft of an internal combustion engine, a driven-side rotating body that is allowed to rotate relative to the driven-side rotating body and that rotates integrally with a camshaft that opens and closes an intake valve, and a phase adjustment mechanism for setting a relative rotation phase of the driving-side rotating body and the driven-side rotating body using a driving force of an electric motor are included. The phase adjustment mechanism is configured to be able to execute retarding control for setting the relative rotation phase to the retarding side until reaching a phase in which the internal combustion engine cannot be started and autonomous running is not possible even if fuel injection and ignition are performed in the internal combustion engine.Type: ApplicationFiled: June 7, 2019Publication date: September 2, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Tomohiro KOZAKI, Seiichi FUJIMOTO, Masaaki KANEKO, Tatsuki OKUDE, Tomoaki FUKAO
-
Publication number: 20210172389Abstract: An internal combustion engine includes an internal combustion engine body including an intake valve and an exhaust valve, and a controller configured or programmed to perform a control to set a rotational speed of the internal combustion engine body to a predetermined rotational speed based on an environmental temperature at a time of starting the internal combustion engine body, and perform a control to drive the internal combustion engine body at the set predetermined rotational speed during a time period until when fuel is supplied to a combustion chamber of the internal combustion engine body and first ignition is performed.Type: ApplicationFiled: July 10, 2019Publication date: June 10, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi FUJIMOTO, Tomohiro KOZAKI, Masaaki KANEKO, Suguru KAMIYA, Atsushi HANAURA, Tatsuki OKUDE, Tomoaki FUKAO
-
Publication number: 20210140377Abstract: A control device for an internal combustion engine includes an internal combustion engine and a valve opening-closing timing control device. The valve opening-closing timing control device has a phase adjustment mechanism for setting a relative rotation phase of a driving-side rotator and a driven-side rotator. The phase adjustment mechanism overlaps a timing of opening an intake valve with a timing of opening an exhaust valve, by setting, in a predetermined period, the relative rotation phase such that the exhaust valve closes after a top dead center position has been reached, and a bypass passage is provided that connects an exhaust passage of one cylinder that is in an exhaust process to the exhaust passage of another cylinder that is in an intake process at the same time as the exhaust process.Type: ApplicationFiled: February 28, 2018Publication date: May 13, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi FUJIMOTO, Masaaki KANEKO, Hirokazu TANAKA, Suguru KAMIYA, Kohei FUJII
-
Publication number: 20200182163Abstract: The internal combustion engine includes: a plurality of cylinders each including a piston that reciprocally operates in association with rotation of a crankshaft, and an intake valve and an exhaust valve that open and close a combustion chamber; a starter motor that drives and rotates the crankshaft; and a valve opening-closing timing control mechanism that sets opening and closing timings of the exhaust valve by driving an electric actuator. If an environmental temperature detected by an environmental temperature sensor is less than 10 degrees below freezing, the control device controls the electric actuator such that the closing timing of the exhaust valve is made different from a top dead center of the piston, at a point in time when cranking is performed, and an initial combustion in one of the plurality of cylinders that is set to be the cylinder in which combustion is performed first is performed.Type: ApplicationFiled: February 28, 2018Publication date: June 11, 2020Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi FUJIMOTO, Masaaki KANEKO, Hirokazu TANAKA
-
Patent number: 10619588Abstract: A controller for an internal combustion engine includes: a failure determination section which determines a failure state in a case where a relative rotation phase of an intake side valve opening and closing timing control mechanism does not change when controlling the mechanism after starting the driving of a starter motor and trying to change the relative rotation phase of the mechanism in a start control for starting an internal combustion engine. When the section determines a failure, the controller performs at least one of an intake air amount increase control in which an opening degree of a throttle valve is increased, an ignition timing advance angle control in which injection of fuel is performed at a timing earlier than a set timing and ignition is performed, and a multi-injection control in which the fuel is injected immediately before the ignition in addition to the fuel injection in an intake stroke.Type: GrantFiled: July 12, 2018Date of Patent: April 14, 2020Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi Fujimoto, Hirokazu Tanaka, Masaaki Kaneko, Tomohiro Kozaki, Suguru Kamiya, Atsushi Hanaura
-
Publication number: 20200072131Abstract: An internal combustion engine includes: an intake control valve provided on an upstream side of a fuel injection device provided in an intake flow path and configured to adjust an opening degree thereof while maintaining an intake state through the intake flow path; and a controller configured to perform control to adjust the opening degree of the intake control valve, in which the controller is configured to set the intake control valve to a closing direction side such that a pressure between the intake control valve and an intake valve of a combustion chamber increases during a pre-ignition motor drive period until a fuel is supplied to the combustion chamber and first ignited.Type: ApplicationFiled: August 28, 2019Publication date: March 5, 2020Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Suguru KAMIYA, Seiichi FUJIMOTO, Masaaki KANEKO, Atsushi HANAURA
-
Publication number: 20190017457Abstract: A controller for an internal combustion engine includes: a failure determination section which determines a failure state in a case where a relative rotation phase of an intake side valve opening and closing timing control mechanism does not change when controlling the mechanism after starting the driving of a starter motor and trying to change the relative rotation phase of the mechanism in a start control for starting an internal combustion engine. When the section determines a failure, the controller performs at least one of an intake air amount increase control in which an opening degree of a throttle valve is increased, an ignition timing advance angle control in which injection of fuel is performed at a timing earlier than a set timing and ignition is performed, and a multi-injection control in which the fuel is injected immediately before the ignition in addition to the fuel injection in an intake stroke.Type: ApplicationFiled: July 12, 2018Publication date: January 17, 2019Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi Fujimoto, Hirokazu Tanaka, Masaaki Kaneko, Tomohiro Kozaki, Suguru Kamiya, Atsushi Hanaura
-
Patent number: 9874156Abstract: The present invention is equipped with: a valve opening/closing timing control mechanism that sets the opening/closing timing of an exhaust valve; and a lock mechanism that holds the rotation phase of the valve opening/closing timing control mechanism in a first lock phase, in which the open state of the exhaust valve is maintained when the intake valve opens.Type: GrantFiled: March 4, 2014Date of Patent: January 23, 2018Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Masaki Kobayashi, Masaaki Kaneko, Seiichi Fujimoto
-
Patent number: 9631561Abstract: The present invention is equipped with: a valve opening/closing timing control mechanism that sets the opening/closing timing of an exhaust valve; and a lock mechanism that holds the rotation phase of the valve opening/closing timing control mechanism in a first lock phase, in which the open state of the exhaust valve is maintained when the intake valve opens.Type: GrantFiled: March 4, 2014Date of Patent: April 25, 2017Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Masaki Kobayashi, Masaaki Kaneko, Seiichi Fujimoto
-
Publication number: 20160017821Abstract: The present invention is equipped with: a valve opening/closing timing control mechanism that sets the opening/closing timing of an exhaust valve; and a lock mechanism that holds the rotation phase of the valve opening/closing timing control mechanism in a first lock phase, in which the open state of the exhaust valve is maintained when the intake valve opens.Type: ApplicationFiled: March 4, 2014Publication date: January 21, 2016Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Masaki KOBAYASHI, Masaaki KANEKO, Seiichi FUJIMOTO