Patents by Inventor Hisaki Ito
Hisaki Ito 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: 10202931Abstract: An internal combustion engine includes a piston and a fuel injection valve. The fuel injection valve includes a first injection hole, a second injection hole, a first needle configured to open and close the first injection hole, and a second needle configured to open and close the second injection hole. The first injection hole and the second injection hole are configured such that a portion of a fuel spray injected from the first injection hole and a portion of a fuel spray injected from the second injection hole overlap each other at a position apart at a predetermined distance from a side wall of a cavity of the piston. The second needle is configured to start operation in order to open the second injection hole after a predetermined time has elapsed from a point of time when the first needle starts operation in order to open the first injection hole.Type: GrantFiled: June 8, 2017Date of Patent: February 12, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisaki Ito, Noriyuki Takada
-
Patent number: 10202930Abstract: A fuel injection valve has first injection holes, second injection holes, a first needle that opens and closes the first injection holes, and a second needle. The fuel injection valve is arranged such that a part of fuel injected from the first injection hole and a part of fuel injected from the second injection hole are gathered together at a position spaced from the side wall of the cavity by a predetermined distance. The second needle starts operating to open the second injection holes, after a predetermined time elapses from a point in time at which the first needle starts operating to open the first injection holes.Type: GrantFiled: June 8, 2017Date of Patent: February 12, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisaki Ito, Noriyuki Takada, Tsutomu Kawae
-
Patent number: 9874188Abstract: An object of the present invention is to further improve the characteristic of the fuel spray of a fuel injection valve which has a plurality of stepped injection holes having a hole diameter of an outlet side injection hole larger than a hole diameter of an inlet side injection hole and which injects fuel from the stepped injection holes into a cylinder of an internal combustion engine. A cutout portion, which guides a flow of gas flowing into an outlet side injection hole from a lateral position of a fuel outlet of the outlet side injection hole during fuel injection, in a circumferential direction of the outlet side injection hole, is provided for at least one of both lateral portions between which the fuel outlet is interposed along with an arrangement direction of a plurality of injection holes, on a circumferential edge of the fuel outlet of the outlet side injection hole, in relation to at lease some of the injection holes of a fuel injection valve having the plurality of stepped injection holes.Type: GrantFiled: November 5, 2015Date of Patent: January 23, 2018Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota JidoshokkiInventors: Hisaki Ito, Noriyuki Takada, Tsutomu Kawae
-
Publication number: 20170356384Abstract: An internal combustion engine includes a piston and a fuel injection valve. The fuel injection valve includes a first injection hole, a second injection hole, a first needle configured to open and close the first injection hole, and a second needle configured to open and close the second injection hole. The first injection hole and the second injection hole are configured such that a portion of a fuel spray injected from the first injection hole and a portion of a fuel spray injected from the second injection hole overlap each other at a position apart at a predetermined distance from a side wall of a cavity of the piston. The second needle is configured to start operation in order to open the second injection hole after a predetermined time has elapsed from a point of time when the first needle starts operation in order to open the first injection hole.Type: ApplicationFiled: June 8, 2017Publication date: December 14, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisaki ITO, Noriyuki TAKADA
-
Publication number: 20170356383Abstract: A fuel injection valve has first injection holes, second injection holes, a first needle that opens and closes the first injection holes, and a second needle. The fuel injection valve is arranged such that a part of fuel injected from the first injection hole and a part of fuel injected from the second injection hole are gathered together at a position spaced from the side wall of the cavity by a predetermined distance. The second needle starts operating to open the second injection holes, after a predetermined time elapses from a point in time at which the first needle starts operating to open the first injection holes.Type: ApplicationFiled: June 8, 2017Publication date: December 14, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisaki Ito, Noriyuki Takada, Tsutomu Kawae
-
Patent number: 9790852Abstract: A condensed water treatment device for an internal combustion engine is provided. The condensed water treatment device may include a condensed water tank, a condensed water supply device, and a condensed-water generation quantity controlling device. The condensed water treatment device may further include a computer. The computer by executing a computer program may function as a storage-water-quantity decrease controlling device and a storage-water-quantity increase controlling device.Type: GrantFiled: June 12, 2013Date of Patent: October 17, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisaki Ito, Noriyuki Takada, Takeshi Hashizume
-
Patent number: 9546607Abstract: A variable valve device for an internal combustion engine is equipped with a variable valve mechanism capable of changing the working angle of an intake valve while holding the maximum lift amount of the intake valve constant. The variable valve device retards the timing for closing the intake valve as the load of the internal combustion engine rises, and enlarges the working angle, while holding the timing for opening the intake valve constant. Operating characteristics of the intake valve are provided in accordance with the load of the internal combustion engine.Type: GrantFiled: March 23, 2012Date of Patent: January 17, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisaki Ito, Takashi Ogawa
-
Publication number: 20160131098Abstract: An object of the present invention is to further improve the characteristic of the fuel spray of a fuel injection valve which has a plurality of stepped injection holes having a hole diameter of an outlet side injection hole larger than a hole diameter of an inlet side injection hole and which injects fuel from the stepped injection holes into a cylinder of an internal combustion engine. A cutout portion, which guides a flow of gas flowing into an outlet side injection hole from a lateral position of a fuel outlet of the outlet side injection hole during fuel injection, in a circumferential direction of the outlet side injection hole, is provided for at least one of both lateral portions between which the fuel outlet is interposed along with an arrangement direction of a plurality of injection holes, on a circumferential edge of the fuel outlet of the outlet side injection hole, in relation to at lease some of the injection holes of a fuel injection valve having the plurality of stepped injection holes.Type: ApplicationFiled: November 5, 2015Publication date: May 12, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hisaki ITO, Noriyuki TAKADA, Tsutomu KAWAE
-
Publication number: 20160115861Abstract: A condensed water treatment device determines whether a storage water quantity Qw of condensed water generated in an EGR cooler and stored in a condensed water tank is equal to or less than a lower limit t1 (S2). When the storage water quantity Qw is equal to or less than the lower limit t1, the flow rate of the EGR cooler is set to 100% and the flow rate of a bypass passage is set to 0% (S3), whereby supply of condensed water to an internal combustion engine is stopped (S5). Thereby, the condensed water treatment device increases the storage water quantity Qw. While, when the storage water quantity Qw is more than the lower limit t1 and also equal to or more than the upper limit t2, the flow rate of the EGR cooler is set to 0% and the flow rate of the bypass passage is set to 100% (S7), whereby supply of condensed water to the internal combustion engine is executed (S9). Thereby, the condensed water treatment device decreases the storage water quantity Qw.Type: ApplicationFiled: June 12, 2013Publication date: April 28, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisaki ITO, Noriyuki TAKADA, Takeshi HASHIZUME
-
Publication number: 20150090220Abstract: A variable valve device for an internal combustion engine is equipped with a variable valve mechanism capable of changing the working angle of an intake valve while holding the maximum lift amount of the intake valve constant. The variable valve device retards the timing for closing the intake valve as the load of the internal combustion engine rises, and enlarges the working angle, while holding the timing for opening the intake valve constant. Operating characteristics of the intake valve are provided in accordance with the load of the internal combustion engine.Type: ApplicationFiled: March 23, 2012Publication date: April 2, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisaki Ito, Takashi Ogawa
-
Patent number: 5718836Abstract: A liquid coolant composition with improved anti-corrosive property contains 85-99 weight % of an agent for lowering the melting point selected from the group consisting of alcohols and glycol, and 1-15 weight % of a rust preventive composition. The rust preventive composition contains 0.00005-0.02 weight % at elemental metal concentration of calcium compounds or a mixture of 0.00005-0.02 weight % each of calcium and magnesium compounds, and at least one kind of rust preventive selected from the group consisting of phosphates, borates, nitrates, molybdates, benzoates, silicates, triazoles, thiazoles, sebacic acid and octylic acid. Still better results are obtained if 0.001-0.02 weight % of at least one kind of polyphosphoric or polycarboxylic acids is additionally contained.Type: GrantFiled: November 13, 1995Date of Patent: February 17, 1998Assignee: Japan Chemical Industries Co., Ltd.Inventors: Yoshitaka Nakatani, Masamine Tanikawa, Hisaki Ito, Hideyuki Tami, Kazuhito Yaeda