Patents by Inventor Motonari Yarino
Motonari Yarino 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: 11649783Abstract: A combustion chamber structure in which an installation hole of the injector is improved to realize a rapid combustion and to reduce an unburned hydrocarbon. In the combustion chamber, a leading end of an injector is withdrawn from an upper end of an opening of an installation hole, and an additionally expanded surface area is formed on an upper inner surface of the installation hole from a portion to which the leading end of the injector is situated to an opening end of the installation hole. An angle between the additionally expanded surface area and a joint surface of a cylinder head is narrower than an angle between a center axis of the installation hole and the joint surface.Type: GrantFiled: October 10, 2022Date of Patent: May 16, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motonari Yarino, Noriyuki Takada, Atsushi Inoue
-
Publication number: 20230112941Abstract: A combustion chamber structure in which an installation hole of the injector is improved to realize a rapid combustion and to reduce an unburned hydrocarbon. In the combustion chamber, a leading end of an injector is withdrawn from an upper end of an opening of an installation hole, and an additionally expanded surface area is formed on an upper inner surface of the installation hole from a portion to which the leading end of the injector is situated. to an opening end of the installation hole. An angle between the additionally expanded surface area and a joint surface of a cylinder head is narrower than an angle between a center axis of the installation hole and the joint surface.Type: ApplicationFiled: October 10, 2022Publication date: April 13, 2023Inventors: Motonari YARINO, Noriyuki TAKADA, Atsushi INOUE
-
Publication number: 20220290643Abstract: A damping insulator restrains vibration to be transmitted between a fuel injection valve and a cylinder head. The fuel injection valve is attached to an insertion hole of the cylinder head. The fuel injection valve includes a stepped portion reduced in diameter in a tapered shape such that an outer-peripheral-side tapered surface is formed to face a shoulder provided in an inlet portion of the insertion hole. The damping insulator restrains the vibration by being provided between the stepped portion and the shoulder. The damping insulator includes an annular tolerance ring having a bottom surface facing the shoulder and an inner-peripheral-side tapered surface facing the outer-peripheral-side tapered surface, and a damping resin layer provided on the bottom surface or the inner-peripheral-side tapered surface of the tolerance ring. The damping resin layer contains heat-resistant resin and damping filler configured to convert vibrational energy into thermal energy.Type: ApplicationFiled: March 10, 2022Publication date: September 15, 2022Inventors: Kazuyoshi MANABE, Motonari YARINO, Koki MIYASHIRO
-
Patent number: 10914265Abstract: In a cylinder head according to an example of the present disclosure, a pair of intake ports communicating with the common combustion chamber are formed so that the wall thickness of the port walls on opposing sides is relatively small and the wall thickness of the port walls on reversing sides is relatively large. Herein, the opposing side is the side on which the port walls of the pair of the intake ports face each other. The reversing side is the side opposite to the opposing side. That is, the reversing side is the side on which the port walls of the pair of the intake ports face away from each other. An inter-ports flow path for flowing the cooling water is formed between the port walls on the opposing sides of the pair of the intake ports.Type: GrantFiled: September 16, 2019Date of Patent: February 9, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Motonari Yarino
-
Patent number: 10767576Abstract: The invention relates to a control device applied to a cylinder injection type of the engine (10). The control device carries out a fuel injection while changing a penetration force of the injected fuel by changing a maximum value of a lift amount of the valve body (22) of the injector (20). Further, the control device controls an ignition timing on the basis of the engine operation state. The control device changes an end timing of a preceding injection carried out immediately before the ignition timing such that a time period between the end timing of the preceding injection and the ignition timing under a state where a first value is set as the maximum value of the valve body lift amount in the preceding injection, is longer than a time period between the end timing of the preceding injection and the ignition timing under a state that a second value larger than the first value is set as the maximum value of the valve body lift amount in the preceding injection.Type: GrantFiled: July 7, 2015Date of Patent: September 8, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Hashimoto, Motonari Yarino
-
Publication number: 20200132013Abstract: In a cylinder head according to an example of the present disclosure, a pair of intake ports communicating with the common combustion chamber are formed so that the wall thickness of the port walls on opposing sides is relatively small and the wall thickness of the port walls on reversing sides is relatively large. Herein, the opposing side is the side on which the port walls of the pair of the intake ports face each other. The reversing side is the side opposite to the opposing side. That is, the reversing side is the side on which the port walls of the pair of the intake ports face away from each other. An inter-ports flow path for flowing the cooling water is formed between the port walls on the opposing sides of the pair of the intake ports.Type: ApplicationFiled: September 16, 2019Publication date: April 30, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Motonari YARINO
-
Patent number: 10513999Abstract: An engine controller according to one aspect of the invention is applied to a cylinder injection engine including a fuel injection valve that directly injects fuel into a cylinder. The engine controller determines whether knocking is occurring based on a signal from a knocking sensor. When the knocking is occurring, the engine controller performs partial lift fuel injection at a predetermined timing close to an ignition timing. The partial lift fuel injection is performed with a lift amount of a valve body of the fuel injection valve limited within a range between a minimum lift amount (0) and a partial lift amount, which is smaller than a maximum lift amount.Type: GrantFiled: September 2, 2014Date of Patent: December 24, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Daisuke Uchida, Motonari Yarino, Susumu Hashimoto
-
Patent number: 10358999Abstract: An engine controller according to one aspect of the invention is applied to a cylinder injection engine including a fuel injection valve that directly injects fuel into a cylinder. The engine controller determines whether knocking is occurring based on a signal from a knocking sensor. When the knocking is occurring, the engine controller performs partial lift fuel injection at a predetermined timing close to an ignition timing. The partial lift fuel injection is performed with a lift amount of a valve body of the fuel injection valve limited within a range between a minimum lift amount (0) and a partial lift amount, which is smaller than a maximum lift amount.Type: GrantFiled: September 2, 2014Date of Patent: July 23, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Daisuke Uchida, Motonari Yarino, Susumu Hashimoto
-
Patent number: 10208654Abstract: In order to achieve stable combustion in an internal combustion engine, the engine includes a fuel injection valve having a first nozzle hole and a second nozzle hole, and an spark plug disposed at a position through which the swirling flow flows, and which is at the downstream side of the flow of the swirling flow from an extension line of the first nozzle hole and at the upstream side of the flow of the swirling flow from an extension line of the second nozzle hole, for igniting a spray of fuel injected from the fuel injection valve, wherein the first nozzle hole and the second nozzle hole are formed in such a manner that the shortest distance from the extension line of the first nozzle hole to the spark plug becomes longer than the shortest distance from the extension line of the second nozzle hole to the spark plug.Type: GrantFiled: March 2, 2016Date of Patent: February 19, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiyuki Kitazume, Motonari Yarino, Naoya Kaneko
-
Patent number: 10072603Abstract: The invention relates to a control device applied to a cylinder injection type of an internal combustion engine (10). The control device control a disperse parameter for changing a degree of a spread of the fuel spray injected from the injector (20) such that the maximum degree of the spread of the fuel spray under a state where an amount of the fuel adhering to the spark generation part (31a) of the spark plug (30) at the ignition timing corresponds to a first amount, is smaller than the maximum degree of the spread of the fuel spray under a state where the amount of the fuel adhering to the spark generation part at the ignition timing corresponds to a second amount smaller than said first amount.Type: GrantFiled: July 7, 2015Date of Patent: September 11, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu Hashimoto, Motonari Yarino
-
Publication number: 20170248086Abstract: The invention relates to a control device applied to a cylinder injection type of the engine (10). The control device carries out a fuel injection while changing a penetration force of the injected fuel by changing a maximum value of a lift amount of the valve body (22) of the injector (20). Further, the control device controls an ignition timing on the basis of the engine operation state. The control device changes an end timing of a preceding injection carried out immediately before the ignition timing such that a time period between the end timing of the preceding injection and the ignition timing under a state where a first value is set as the maximum value of the valve body lift amount in the preceding injection, is longer than a time period between the end timing of the preceding injection and the ignition timing under a state that a second value larger than the first value is set as the maximum value of the valve body lift amount in the preceding injection.Type: ApplicationFiled: July 7, 2015Publication date: August 31, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu HASHIMOTO, Motonari YARINO
-
Publication number: 20170191441Abstract: The invention relates to a control device applied to a cylinder injection type of an internal combustion engine (10). The control device control a disperse parameter for changing a degree of a spread of the fuel spray injected from the injector (20) such that the maximum degree of the spread of the fuel spray under a state where an amount of the fuel adhering to the spark generation part (31a) of the spark plug (30) at the ignition timing corresponds to a first amount, is smaller than the maximum degree of the spread of the fuel spray under a state where the amount of the fuel adhering to the spark generation part at the ignition timing corresponds to a second amount smaller than said first amount.Type: ApplicationFiled: July 7, 2015Publication date: July 6, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Susumu HASHIMOTO, Motonari YARINO
-
Publication number: 20170175653Abstract: A fuel injection controller for an internal combustion engine is provided. The fuel injection controller includes an electronic control unit configured to (a) execute main fuel injection and auxiliary fuel injection in one engine cycle; and (b) execute the auxiliary fuel injection at least once in a particular period that includes timing at which a intake valve starts opening, so that fuel injected in the auxiliary fuel injection is carried by a reverse tumble stream, the reverse tumble stream being an air stream that flows from a intake port into a combustion chamber, flows along a bore wall surface on the intake valve side that is on an opposite side from a exhaust valve toward a piston crown surface, and then flows from the piston crown surface toward a cylinder head lower surface.Type: ApplicationFiled: January 16, 2015Publication date: June 22, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke UCHIDA, Motonari YARINO
-
Publication number: 20160258346Abstract: Stable combustion is achieved in an internal combustion engine, in cases where an air stream has occurred in a cylinder. The engine includes a fuel injection valve having a first nozzle hole and a second nozzle hole, and an spark plug disposed at a position through which the swirling flow flows, and which is at the downstream side of the flow of the swirling flow from an extension line of the first nozzle hole and at the upstream side of the flow of the swirling flow from an extension line of the second nozzle hole, for igniting a spray of fuel injected from the fuel injection valve, wherein the first nozzle hole and the second nozzle hole are formed in such a manner that the shortest distance from the extension line of the first nozzle hole to the spark plug becomes longer than the shortest distance from the extension line of the second nozzle hole to the spark plug.Type: ApplicationFiled: March 2, 2016Publication date: September 8, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiyuki KITAZUME, Motonari YARINO, Naoya KANEKO
-
Patent number: 9410515Abstract: A fuel injection valve (21) is provided with a plurality of injection holes (25) arranged at intervals in a lateral direction, when a direction in which a central axis (CL) of the cylinder (2) extends is a vertical direction, so that the plurality of injection holes (25) are directed radially. The plurality of injection holes (25) are configured such that, when an angle formed between two adjacent injection axes, among a plurality of injection axes (Axf) defining the respective injection directions of the injection holes, is an included angle, the included angle (?1) formed by two injection axes closest to the central axis of the cylinder (2) is the smallest of all the included angles (?1, ?2, ?3).Type: GrantFiled: May 10, 2012Date of Patent: August 9, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Motonari Yarino
-
Publication number: 20160208730Abstract: An engine controller according to one aspect of the invention is applied to a cylinder injection engine including a fuel injection valve that directly injects fuel into a cylinder. The engine controller determines whether knocking is occurring based on a signal from a knocking sensor. When the knocking is occurring, the engine controller performs partial lift fuel injection at a predetermined timing close to an ignition timing. The partial lift fuel injection is performed with a lift amount of a valve body of the fuel injection valve limited within a range between a minimum lift amount (0) and a partial lift amount, which is smaller than a maximum lift amount.Type: ApplicationFiled: September 2, 2014Publication date: July 21, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke UCHIDA, Motonari YARINO, Susumu HASHIMOTO
-
Patent number: 9194323Abstract: A fuel injection device is equipped with a fuel injection valve that is mounted in an engine body and injects fuel containing air bubbles, and void fraction adjustment means that changes a void fraction of the fuel that is to be injected from the fuel injection valve. The void ratio adjustment means increases the fuel pressure of the fuel to be injected from the fuel injection valve when an increase of the void fraction is requested. The void fraction adjustment means adjusts the void fraction of the fuel by changing temperature of the fuel to be injected from the fuel injection valve. By appropriately controlling the void fraction, both fuel atomization and securement of the net amount of fuel can be achieved.Type: GrantFiled: March 31, 2011Date of Patent: November 24, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motonari Yarino, Tatsuo Kobayashi
-
Publication number: 20140137842Abstract: A fuel injection valve (21) is provided with a plurality of injection holes (25) arranged at intervals in a lateral direction, when a direction in which a central axis (CL) of the cylinder (2) extends is a vertical direction, so that the plurality of injection holes (25) are directed radially. The plurality of injection holes (25) are configured such that, when an angle formed between two adjacent injection axes, among a plurality of injection axes (Axf) defining the respective injection directions of the injection holes, is an included angle, the included angle (?1) formed by two injection axes closest to the central axis of the cylinder (2) is the smallest of all the included angles (?1, ?2, ?3).Type: ApplicationFiled: May 10, 2012Publication date: May 22, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Motonari Yarino
-
Publication number: 20140069393Abstract: In a fuel injection apparatus for an internal combustion engine, capable of changing a pressure of fuel that is supplied to a fuel injection valve (21A), the fuel injection valve (21A) has an upper nozzle hole group (25U) including a plurality of nozzle holes (25u) and located on an upper side in a direction of a central axis of a cylinder, and a lower nozzle hole group (25D) including a plurality of nozzle holes (25d) and located on a lower side in the direction of the central axis, and is configured such that a fuel density downstream of the lower nozzle hole group (25D) in an injection direction is higher than that downstream of the upper nozzle hole group (25U) in an injection direction. The fuel injection valve (21A) is configured such that a flow rate of fuel injected from the lower nozzle hole group (25D) is higher than that of fuel injected from the upper nozzle hole group (25U).Type: ApplicationFiled: May 10, 2012Publication date: March 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Motonari Yarino
-
Publication number: 20140014069Abstract: A fuel injection device is equipped with a fuel injection valve that is mounted in an engine body and injects fuel containing air bubbles, and void fraction adjustment means that changes a void fraction of the fuel that is to be injected from the fuel injection valve. The void ratio adjustment means increases the fuel pressure of the fuel to be injected from the fuel injection valve when an increase of the void fraction is requested. The void fraction adjustment means adjusts the void fraction of the fuel by changing temperature of the fuel to be injected from the fuel injection valve. By appropriately controlling the void fraction, both fuel atomization and securement of the net amount of fuel can be achieved.Type: ApplicationFiled: March 31, 2011Publication date: January 16, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motonari Yarino, Tatsuo Kobayashi