Patents by Inventor Yasuhiro Kuze
Yasuhiro Kuze 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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Publication number: 20150275782Abstract: An object of the present invention is to calculate an estimated value of an amount of air blowing through an inside of a cylinder by scavenging that occurs in an engine equipped with a supercharger, that is, a scavenging amount. For this purpose, a control device of an engine equipped with a supercharger according to the present invention calculates an estimated value of an intake valve passing air amount from a measured value of an intake air amount, and calculates an estimated value of an in-cylinder air amount from a measured value or an estimated value of intake pipe pressure. From a difference between the estimated value of the intake valve passing air amount and the estimated value of the in-cylinder air amount, the estimated value of the scavenging amount is calculated.Type: ApplicationFiled: November 29, 2012Publication date: October 1, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryutaro MORIGUCHI, Yoshihiro SAKAYANAGI, Satoru TANAKA, Yasuhiro KUZE
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Patent number: 8744719Abstract: Disclosed is a vehicle running control device that controls the speed of a vehicle on the basis of the information of a set inter-vehicle distance or a set vehicle speed according to the detection state of a vehicle in front. When an accelerator pedal or a brake pedal of the vehicle is operated and the vehicle in front of the vehicle is present, the set inter-vehicle distance is updated. When the pedal of the vehicle is operated and the vehicle in front of the vehicle is absent, the set vehicle speed is updated.Type: GrantFiled: March 9, 2009Date of Patent: June 3, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yasuhiro Kuze
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Publication number: 20140069522Abstract: A first fluid system includes a thermostat portion T, a valve portion V, and an ECU 30A. The thermostat portion T includes a first thermostat 18 in a first divergent pathway PB1 and a second thermostat 19 in a second divergent pathway PB2. The valve portion V includes a valve mechanism in at least a second portion SG2 of portions SG1, SG2, SG3. In the ECU 30A, achieved is a control unit that controls the valve portion V to switch a flow control state of at least one of the valve mechanism of the valve portion V when one of an open failure and a close failure occurs in one of the thermostats 18, 19.Type: ApplicationFiled: May 20, 2011Publication date: March 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Patent number: 8666631Abstract: The vehicle travel control device according to the invention is a vehicle travel control device that controls the travel of a host vehicle based on any of inter-vehicle distance setting and vehicle speed setting that are setting information set in advance, in which the inter-vehicle distance setting and the vehicle speed setting can be updated individually in accordance with the operation of an accelerator pedal or a brake pedal in the host vehicle, and setting information to be updated are selected based on the changes in the travelling conditions of the host vehicle or a leading vehicle.Type: GrantFiled: April 8, 2009Date of Patent: March 4, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshihiro Takagi, Yasuhiro Kuze
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Patent number: 8359150Abstract: A following distance control device (1) that controls a vehicle to regulate a distance to a preceding vehicle to a target following distance, the following distance control device (1) including: detecting unit (30) that detect at least one of acceleration operation (12) or deceleration operation (13) by a driver; a target following distance changing unit that changes the target following distance on the basis of the acceleration operation (12) or the deceleration operation (13) by the driver that is detected by the detecting unit (30); and an inhibition unit that inhibits a changing amount of the target following distance by the target following distance changing unit when the given acceleration operation (12) or the given deceleration operation (13) is executed.Type: GrantFiled: March 30, 2009Date of Patent: January 22, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yasuhiro Kuze
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Publication number: 20120065863Abstract: The vehicle travel control device according to the invention is a vehicle travel control device that controls the travel of a host vehicle based on any of inter-vehicle distance setting and vehicle speed setting that are setting information set in advance, in which the inter-vehicle distance setting and the vehicle speed setting can be updated individually in accordance with the operation of an accelerator pedal or a brake pedal in the host vehicle, and setting information to be updated are selected based on the changes in the travelling conditions of the host vehicle or a leading vehicle.Type: ApplicationFiled: April 8, 2009Publication date: March 15, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toshihiro Takagi, Yasuhiro Kuze
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Publication number: 20110276246Abstract: Disclosed is a vehicle running control device that controls the speed of a vehicle on the basis of the information of a set inter-vehicle distance or a set vehicle speed according to the detection state of a vehicle in front. When an accelerator pedal or a brake pedal of the vehicle is operated and the vehicle in front of the vehicle is present, the set inter-vehicle distance is updated. When the pedal of the vehicle is operated and the vehicle in front of the vehicle is absent, the set vehicle speed is updated.Type: ApplicationFiled: March 9, 2009Publication date: November 10, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Publication number: 20110196591Abstract: A following distance control device (1) that controls a vehicle to regulate a distance to a preceding vehicle to a target following distance, the following distance control device (1) including: detecting unit (30) that detect at least one of acceleration operation (12) or deceleration operation (13) by a driver; a target following distance changing unit that changes the target following distance on the basis of the acceleration operation (12) or the deceleration operation (13) by the driver that is detected by the detecting unit (30); and an inhibition unit that inhibits a changing amount of the target following distance by the target following distance changing unit when the given acceleration operation (12) or the given deceleration operation (13) is executed.Type: ApplicationFiled: March 30, 2009Publication date: August 11, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Patent number: 7198952Abstract: An upstream side catalyst and a downstream side catalyst are disposed in an exhaust passage. A first oxygen sensor is disposed between these two catalysts and a second oxygen sensor is disposed downstream of the downstream side catalyst. The air-fuel ratio is forcibly oscillated and the oxygen storage capacity of the upstream side catalyst is detected. Deterioration of the upstream side catalyst is then detected based on whether this oxygen storage capacity is larger than a predetermined value. The forced oscillation of the air-fuel ratio is performed only when the oxygen storage state of the downstream side catalyst is appropriate.Type: GrantFiled: July 15, 2002Date of Patent: April 3, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Uchida, Hiroshi Sawada, Toshinari Nagai, Akihiro Katayama, Yasuhiro Kuze, Naoto Kato
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Patent number: 7162862Abstract: An air-fuel ratio control apparatus estimates, on the basis of an exhaust air-fuel ratio of exhaust gas flowing into an exhaust purifying catalyst unit disposed in an exhaust passage of an engine, an emission of at least one specific component contained in exhaust gas flowing out of the exhaust purifying catalyst unit. The air-fuel ratio control apparatus performs the estimation by use of a model, and controls the air-fuel ratio in such a manner that the estimation value reaches a target state. The model is previously determined in consideration of the mass balance of the specific component.Type: GrantFiled: June 18, 2002Date of Patent: January 16, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshinari Nagai, Akihiro Katayama, Naoto Kato, Yukio Kuroda, Yasuhiro Kuze, Hiroshi Sawada, Takahiro Uchida, Naoki Baba, Shinji Kojima
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Patent number: 7080609Abstract: An engine system with a thermal storage device is capable of efficiently supplying heat from a thermal storage device to an internal combustion engine. The engine system equipped with the thermal storage tank supplies the hot water stored in the thermal storage tank to a cylinder head of the internal combustion engine before the starting thereof. At this time, an electronic control unit sets a target value of the temperature of the internal combustion engine at the start of the hot water supply in such a manner that the lower the temperature of the internal combustion engine, the lower the target value becomes. As a result, a variation in combustion states between cylinders can be suppressed at the starting of the internal combustion engine.Type: GrantFiled: July 15, 2004Date of Patent: July 25, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasuhiro Kuze, Takayuki Otsuka, Hiroki Ichinose, Yukio Kinugasa
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Publication number: 20050022769Abstract: An engine system with a thermal storage device is capable of efficiently supplying heat from a thermal storage device to an internal combustion engine. The engine system (1) equipped with the thermal storage tank (100) supplies the hot water stored in the thermal storage tank (100) to a cylinder head (20a) of the internal combustion engine (20) before the starting thereof. At this time, an electronic control unit (90) sets a target value of the temperature of the internal combustion engine (20) at the start of the hot water supply in such a manner that the lower the temperature of the internal combustion engine (20), the lower does the target value become. As a result, a variation in combustion states between cylinders can be suppressed at the starting of the internal combustion engine (20).Type: ApplicationFiled: July 15, 2004Publication date: February 3, 2005Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yasuhiro Kuze, Takayuki Otsuka, Hiroki Ichinose, Yukio Kinugasa
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Publication number: 20040144079Abstract: An air-fuel ratio control apparatus according to the present invention estimates, on the basis of an exhaust air-fuel ratio of exhaust gas flowing into an exhaust purifying catalyst unit 19 disposed in an exhaust passage 7 of an engine 1, an emission of at least one specific component contained in exhaust gas flowing out of the exhaust purifying catalyst unit. The air-fuel ratio control apparatus performs the estimation by use of a model, and controls the air-fuel ratio in such a manner that the estimation value reaches a target state. The model is previously determined in consideration of the mass balance of the specific component.Type: ApplicationFiled: January 24, 2004Publication date: July 29, 2004Inventors: Toshinari Nagai, Akihiro Katayama, Naoto Kato, Yukio Kuroda, Yasuhiro Kuze, Hiroshi Sawada, Takahiro Uchida, Naoki Baba, Shinji Kojima
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Publication number: 20030017603Abstract: An upstream side catalyst and a downstream side catalyst are disposed in an exhaust passage. A first oxygen sensor is disposed between these two catalysts and a second oxygen sensor is disposed downstream of the downstream side catalyst. The air-fuel ratio is forcibly oscillated and the oxygen storage capacity of the upstream side catalyst is detected. Deterioration of the upstream side catalyst is then detected based on whether this oxygen storage capacity is larger than a predetermined value. The forced oscillation of the air-fuel ratio is performed only when the oxygen storage state of the downstream side catalyst is appropriate.Type: ApplicationFiled: July 15, 2002Publication date: January 23, 2003Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Uchida, Hiroshi Sawada, Toshinari Nagai, Akihiro Katayama, Yasuhiro Kuze, Naoto Kato