Patents by Inventor Kenjiro Konomi
Kenjiro Konomi 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: 10145297Abstract: Disclosed is a controller for a turbocharged engine. The engine includes a supercharger configured to supercharge intake air using an exhaust gas from the engine, and including movable flaps arranged so that a boost pressure generated in an intake passage is adjustable. If a rotational speed of a turbine and compressor that constitute the supercharger has reached a first threshold lower than an endurance limit, an amount of fuel injected to the engine is reduced to a predetermined amount. If the rotational speed has reached a second threshold lower than the first threshold, the amount of fuel injected is reduced in accordance with an excess of the rotational speed over the second threshold.Type: GrantFiled: January 19, 2015Date of Patent: December 4, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Amane Tsuda, Hiroaki Deguchi, Kenjiro Konomi, Nobuo Yunoki, Yasushi Niwa, Kazuya Niida
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Patent number: 10087868Abstract: An abnormality detector of a turbocharged engine includes: a compressor including a plurality of blades that are detected portions; and a detecting portion configured to electrically detect the plurality of blades. Each time the blades are detected a predetermined number of times, one pulse having a pulse width corresponding to a measurement time required to detect the blades is output, and a turbo revolution is calculated from the pulse width of the output pulse. When it is judged that a rotation change of the rotating body which change is calculated based on a pulse width of a first pulse and a pulse width of a second pulse output after the first pulse exceeds a predetermined rate in a region where the rotating body exceeds a predetermined revolution, it is determined that an abnormality of the blade or an electromagnetic noise abnormality of the detecting portion occurs.Type: GrantFiled: February 18, 2015Date of Patent: October 2, 2018Assignee: Mazda Motor CorporationInventors: Amane Tsuda, Hiroaki Deguchi, Kenjiro Konomi, Nobuo Yunoki, Yasushi Niwa, Kazuya Niida
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Patent number: 10087862Abstract: A PCM (60) as an engine control device comprises a torque controlling unit (65) configured to control an engine torque based on an accelerator actuated amount. The torque controlling unit (65) is configured, after an accelerator actuated amount is started to increase, and when a rolling movement is being produced in a power train (PT) which includes at least an engine fixed to a vehicle body by an engine mount, to control for limiting increase in the engine torque so as to make an actual increase rate of the engine torque smaller than a nominal increase rate of the engine torque according to an increase in the accelerator actuated amount, in order to suppress the rolling movement.Type: GrantFiled: December 9, 2016Date of Patent: October 2, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Kenjiro Konomi, Kenko Ujihara
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Patent number: 10060372Abstract: A PCM (60) as an engine control device comprises a torque controlling unit (65) configured to control an engine torque based on an accelerator actuated amount. The torque controlling unit (65) is configured, after the accelerator actuated amount is started to increase, and when a power train (PT) which includes at least an engine (E) fixed to a vehicle body by an engine mount (Mt) is started to conduct the rolling movement, to control to limit increase in the engine torque so as to make an actual increase rate of the engine torque smaller than a nominal increase rate of the engine torque according to an increase in the accelerator actuated amount, in order to control an initial speed of the rolling movement.Type: GrantFiled: December 9, 2016Date of Patent: August 28, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Kenjiro Konomi, Kenko Ujihara
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Patent number: 9879595Abstract: An exhaust control apparatus for an engine is provided. The apparatus includes a turbocharger, a high-pressure exhaust gas recirculation (EGR) device, a low-pressure EGR device, and a flap controller. The turbocharger includes a turbine, a compressor, and movable flaps, and rotates the turbine by exhaust gas to drive the compressor so as to boost intake air. The high-pressure EGR device recirculates, within a first engine operating range, the exhaust gas from a position of an exhaust passage upstream of the turbine to a position of an intake passage downstream of the compressor. The low-pressure EGR device recirculates, within a second engine operating range, the exhaust gas from a position of the exhaust passage downstream of the turbine to a position of the intake passage upstream of the compressor. The flap controller controls flap openings.Type: GrantFiled: August 7, 2015Date of Patent: January 30, 2018Assignee: Mazda Motor CorporationInventors: Kenjiro Konomi, Nobuo Yunoki, Kotaro Takahashi
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Publication number: 20170184042Abstract: A PCM (60) as an engine control device comprises a torque controlling unit (65) configured to control an engine torque based on an accelerator actuated amount. The torque controlling unit (65) is configured, after an accelerator actuated amount is started to increase, and when a rolling movement is being produced in a power train (PT) which includes at least an engine fixed to a vehicle body by an engine mount, to control for limiting increase in the engine torque so as to make an actual increase rate of the engine torque smaller than a nominal increase rate of the engine torque according to an increase in the accelerator actuated amount, in order to suppress the rolling movement.Type: ApplicationFiled: December 9, 2016Publication date: June 29, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Kenjiro KONOMI, Kenko UJIHARA
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Publication number: 20170184041Abstract: A PCM (60) as an engine control device comprises a torque controlling unit (65) configured to control an engine torque based on an accelerator actuated amount. The torque controlling unit (65) is configured, after the accelerator actuated amount is started to increase, and when a power train (PT) which includes at least an engine (E) fixed to a vehicle body by an engine mount (Mt) is started to conduct the rolling movement, to control to limit increase in the engine torque so as to make an actual increase rate of the engine torque smaller than a nominal increase rate of the engine torque according to an increase in the accelerator actuated amount, in order to control an initial speed of the rolling movement.Type: ApplicationFiled: December 9, 2016Publication date: June 29, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Kenjiro KONOMI, Kenko UJIHARA
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Publication number: 20170138291Abstract: An abnormality detector of a turbocharged engine includes: a compressor including a plurality of blades that are detected portions; and a detecting portion configured to electrically detect the plurality of blades. Each time the blades are detected a predetermined number of times, one pulse having a pulse width corresponding to a measurement time required to detect the blades is output, and a turbo revolution is calculated from the pulse width of the output pulse. When it is judged that a rotation change of the rotating body which change is calculated based on a pulse width of a first pulse and a pulse width of a second pulse output after the first pulse exceeds a predetermined rate in a region where the rotating body exceeds a predetermined revolution, it is determined that an abnormality of the blade or an electromagnetic noise abnormality of the detecting portion occurs.Type: ApplicationFiled: February 18, 2015Publication date: May 18, 2017Applicant: Mazda Motor CorporationInventors: Amane Tsuda, Hiroaki Deguchi, Kenjiro Konomi, Nobuo Yunoki, Yasushi Niwa, Kazuya Niida
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Publication number: 20170067394Abstract: Disclosed is a controller for a turbocharged engine. The engine includes a supercharger configured to supercharge intake air using an exhaust gas from the engine, and including movable flaps arranged so that a boost pressure generated in an intake passage is adjustable. If a rotational speed of a turbine and compressor that constitute the supercharger has reached a first threshold lower than an endurance limit, an amount of fuel injected to the engine is reduced to a predetermined amount. If the rotational speed has reached a second threshold lower than the first threshold, the amount of fuel injected is reduced in accordance with an excess of the rotational speed over the second threshold.Type: ApplicationFiled: January 19, 2015Publication date: March 9, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Amane TSUDA, Hiroaki DEGUCHI, Kenjiro KONOMI, Nobuo YUNOKI, Yasushi NIWA, Kazuya NIIDA
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Publication number: 20160090928Abstract: An exhaust control apparatus for an engine is provided. The apparatus includes a turbocharger, a high-pressure exhaust gas recirculation (EGR) device, a low-pressure EGR device, and a flap controller. The turbocharger includes a turbine, a compressor, and movable flaps, and rotates the turbine by exhaust gas to drive the compressor so as to boost intake air. The high-pressure EGR device recirculates, within a first engine operating range, the exhaust gas from a position of an exhaust passage upstream of the turbine to a position of an intake passage downstream of the compressor. The low-pressure EGR device recirculates, within a second engine operating range, the exhaust gas from a position of the exhaust passage downstream of the turbine to a position of the intake passage upstream of the compressor. The flap controller controls flap openings.Type: ApplicationFiled: August 7, 2015Publication date: March 31, 2016Inventors: Kenjiro Konomi, Nobuo Yunoki, Kotaro Takahashi