Patents by Inventor Koji Aso
Koji Aso 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: 11333098Abstract: An engine controller calculates a pulsation correction value based on actuation states of an air bypass valve (ABV) and a wastegate valve (WGV) that change the shape of intake and exhaust flow passages of an exhaust turbocharger. The pulsation correction value is used to compensate for an output error of an airflow meter caused by intake pulsation. The engine controller also calculates a fuel injection amount of an injector, based on an output of the airflow meter that has been corrected based on the pulsation correction value.Type: GrantFiled: January 14, 2021Date of Patent: May 17, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akito Uchida, Koji Aso
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Publication number: 20210246847Abstract: An engine controller calculates a pulsation correction value based on actuation states of an air bypass valve (ABV) and a wastegate valve (WGV) that change the shape of intake and exhaust flow passages of an exhaust turbocharger. The pulsation correction value is used to compensate for an output error of an airflow meter caused by intake pulsation. The engine controller also calculates a fuel injection amount of an injector, based on an output of the airflow meter that has been corrected based on the pulsation correction value.Type: ApplicationFiled: January 14, 2021Publication date: August 12, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akito UCHIDA, Koji ASO
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Patent number: 10384515Abstract: A vehicle air conditioner to be installed in a passenger compartment S includes a casing, a piping component, and a seal 60. The casing accommodates a heat exchanger. The piping component supplies a heating medium to the heat exchanger or exhausts the heating medium from the heat exchanger. The seal 60 seals a portion between the casing and a periphery of an opening P of a dash panel P of a vehicle. The dash panel P separates the passenger compartment S from an outside of the passenger compartment S. The piping component is inserted into the opening. The seal 60 has a surface facing the dash panel P and including a notch 60d. The notch 60d is positioned outside the periphery of opening P1.Type: GrantFiled: February 6, 2013Date of Patent: August 20, 2019Assignee: JAPAN CLIMATE SYSTEMS CORPORATIONInventors: Kazutoshi Hyakuda, Yosuke Harada, Kazuhiro Yamamoto, Koji Aso
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Patent number: 10316787Abstract: Provided is a fuel supply device for an internal combustion engine. When fuel pressure in a high-pressure fuel pipe changes as a result of the driving of a high-pressure pump, the changing fuel pressure propagates as pulsation into a low-pressure fuel pipe. A degree of influence of propagation of pulsation decreases as fuel pressure in the low-pressure fuel pipe increases. When the high-pressure pump is in an operating state where the degree of influence of the pulsation of the fuel pressure propagating from the high-pressure fuel pipe on the fuel pressure in the low-pressure fuel pipe is high, boost control for driving a feed pump to raise the fuel pressure in the low-pressure fuel pipe is executed.Type: GrantFiled: June 18, 2015Date of Patent: June 11, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Aso, Hideaki Hayashi
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Patent number: 10228087Abstract: A method for filling a gap with a filler material, enabling prevention of inflow of the filler material into an air removing tool through its opening before complete removal of air from the gap, and enabling uniform filling of the gap with the filler material. The gap is between an existing conduit and a lining material provided inside the existing conduit. The method includes: inserting an air removing tool into an air removing hole bored through the lining material, and bringing a leading end face of the air removing tool into contact with the inner circumferential surface of the existing conduit; and injecting the filler material into the gap while expelling air from the gap through a leading end of the air removing tool, the air removing tool including, at its leading end, an air removing portion through which air is discharged.Type: GrantFiled: October 10, 2014Date of Patent: March 12, 2019Assignees: ASHIMORI INDUSTRY CO., LTD., ASHIMORI ENGINEERING CO., LTD.Inventors: Susumu Okuda, Ichiro Kusuba, Koji Aso
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Patent number: 10041431Abstract: A fuel supply apparatus for an internal combustion engine includes a fuel pump, a fuel pipe, a reduction valve, and an electronic control unit. The electronic control unit is configured to drive the fuel pump to rotate such that a required flow rate of the fuel is realized, while adjusting the fuel pressure in the fuel pipe to a target value, by driving the fuel pump to rotate. The electronic control unit is configured to operate the reduction valve to be opened when the operation state of the fuel pump is a first operation state. The first operation state is the operation state of the fuel pump where the frequency of the fuel pump has a value within a resonance area.Type: GrantFiled: June 25, 2015Date of Patent: August 7, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Aso, Hideaki Hayashi
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Publication number: 20170314721Abstract: A method for filling a gap with a filler material, enabling prevention of inflow of the filler material into an air removing tool through its opening before complete removal of air from the gap, and enabling uniform filling of the gap with the filler material. The gap is between an existing conduit and a lining material provided inside the existing conduit. The method includes: inserting an air removing tool into an air removing hole bored through the lining material, and bringing a leading end face of the air removing tool into contact with the inner circumferential surface of the existing conduit; and injecting the filler material into the gap while expelling air from the gap through a leading end of the air removing tool, the air removing tool including, at its leading end, an air removing portion through which air is discharged.Type: ApplicationFiled: October 10, 2014Publication date: November 2, 2017Applicants: Ashimori Industry Co., Ltd., Ashimori Engineering Co., Ltd.Inventors: Susumu OKUDA, Ichiro KUSUBA, Koji ASO
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Publication number: 20170198657Abstract: Provided is a fuel supply device for an internal combustion engine. When fuel pressure in a high-pressure fuel pipe changes as a result of the driving of a high-pressure pump, the changing fuel pressure propagates as pulsation into a low-pressure fuel pipe. A degree of influence of propagation of pulsation decreases as fuel pressure in the low-pressure fuel pipe increases. When the high-pressure pump is in an operating state where the degree of influence of the pulsation of the fuel pressure propagating from the high-pressure fuel pipe on the fuel pressure in the low-pressure fuel pipe is high, boost control for driving a feed pump to raise the fuel pressure in the low-pressure fuel pipe is executed.Type: ApplicationFiled: June 18, 2015Publication date: July 13, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji ASO, Hideaki HAYASHI
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Patent number: 9371762Abstract: A catalyst protection device includes: a catalyst provided in an exhaust system of an internal combustion engine and purifying exhaust gas; a bed temperature acquisition unit acquiring a current bed temperature of the catalyst; a base increase value calculation unit calculating a base increase value that is a base value of an increase value of a fuel injection amount injected by a fuel injection valve included in the internal combustion engine in order to cool the catalyst when the current bed temperature exceeds a predetermined determination value; a compensator acquiring a corrected increase value by correcting the base increase value using a reduction coefficient that is calculated by incorporating a value of a target bed temperature set to a value strictly lower than the determination value; and an injection amount increasing unit selecting any one of the base increase value and the corrected increase value.Type: GrantFiled: May 30, 2013Date of Patent: June 21, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kondo, Yasuyuki Takama, Koji Aso
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Patent number: 9228465Abstract: A catalyst protection device includes: a catalyst provided in an exhaust system of an internal combustion engine; a bed temperature acquisition unit that acquires a bed temperature for each of a plurality of regions of the catalyst distributed in an exhaust gas flow direction; and a fuel injection unit that determines for each of the regions whether an increase in fuel injection amount is required on the basis of the corresponding bed temperature acquired by the bed temperature acquisition unit, that calculates an increase in fuel injection amount for each region and that injects fuel of an amount including the sum of the calculated increase values.Type: GrantFiled: May 30, 2013Date of Patent: January 5, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kondo, Yasuyuki Takama, Koji Aso
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Publication number: 20150377174Abstract: A fuel supply apparatus for an internal combustion engine includes a fuel pump, a fuel pipe, a reduction valve, and an electronic control unit. The electronic control unit is configured to drive the fuel pump to rotate such that a required flow rate of the fuel is realized, while adjusting the fuel pressure in the fuel pipe to a target value, by driving the fuel pump to rotate. The electronic control unit is configured to operate the reduction valve to be opened when the operation state of the fuel pump is a first operation state. The first operation state is the operation state of the fuel pump where the frequency of the fuel pump has a value within a resonance area.Type: ApplicationFiled: June 25, 2015Publication date: December 31, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji ASO, Hideaki HAYASHI
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Publication number: 20150135682Abstract: A catalyst protection device includes: a catalyst provided in an exhaust system of an internal combustion engine; a bed temperature acquisition unit that acquires a bed temperature for each of a plurality of regions of the catalyst distributed in an exhaust gas flow direction; and a fuel injection unit that determines for each of the regions whether an increase in fuel injection amount is required on the basis of the corresponding bed temperature acquired by the bed temperature acquisition unit, that calculates an increase in fuel injection amount for each region and that injects fuel of an amount including the sum of the calculated increase values.Type: ApplicationFiled: May 30, 2013Publication date: May 21, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kondo, Yasuyuki Takama, Koji Aso
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Publication number: 20150128567Abstract: A catalyst protection device includes: a catalyst provided in an exhaust system of an internal combustion engine and purifying exhaust gas; a bed temperature acquisition unit acquiring a current bed temperature of the catalyst; a base increase value calculation unit calculating a base increase value that is a base value of an increase value of a fuel injection amount injected by a fuel injection valve included in the internal combustion engine in order to cool the catalyst when the current bed temperature exceeds a predetermined determination value; a compensator acquiring a corrected increase value by correcting the base increase value using a reduction coefficient that is calculated by incorporating a value of a target bed temperature set to a value strictly lower than the determination value; and an injection amount increasing unit selecting any one of the base increase value and the corrected increase value.Type: ApplicationFiled: May 30, 2013Publication date: May 14, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kondo, Yasuyuki Takama, Koji Aso
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Publication number: 20150122473Abstract: A vehicle air conditioner includes an electric heater, an air mixing damper, a driver configured to drive the air mixing damper, and a controller configured to control the electric heater and the driver. The controller is configured to perform thermal capacity switching control such that when the thermal capacity of the electric heater is switched, a target opening degree of the air mixing damper is set such that the temperature of blowout air approximates a target temperature.Type: ApplicationFiled: January 12, 2015Publication date: May 7, 2015Applicant: JAPAN CLIMATE SYSTEMS CORPORATIONInventors: Satoshi NII, Hiroaki SHIGENAKA, Hideaki NISHII, Yoichi MIYAZAKI, Koji ASO
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Publication number: 20150033781Abstract: A vehicle air conditioner to be installed in a passenger compartment S includes a casing, a piping component, and a seal 60. The casing accommodates a heat exchanger. The piping component supplies a heating medium to the heat exchanger or exhausts the heating medium from the heat exchanger. The seal 60 seals a portion between the casing and a periphery of an opening P of a dash panel P of a vehicle. The dash panel P separates the passenger compartment S from an outside of the passenger compartment S. The piping component is inserted into the opening. The seal 60 has a surface facing the dash panel P and including a notch 60d. The notch 60d is positioned outside the periphery of opening P1.Type: ApplicationFiled: February 6, 2013Publication date: February 5, 2015Applicant: JAPAN CLIMATE SYSTEMS CORPORATIONInventors: Kazutoshi Hyakuda, Yosuke Harada, Kazuhiro Yamamoto, Koji Aso
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Patent number: 8899211Abstract: An internal combustion engine is started by performing fuel supply into part of a plurality of cylinders included in the internal combustion engine. After the magnitude of the negative pressure produced in intake piping of the internal combustion engine exceeds a predetermined reference value, fuel supply into the remaining cylinder(s) is started.Type: GrantFiled: February 14, 2011Date of Patent: December 2, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Aso, Hiroshi Tanaka
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Patent number: 8746211Abstract: A control apparatus for an internal combustion engine starts the internal combustion engine by initiating combustion in cylinders belonging to a first cylinder group, from among a plurality of cylinders that make up the internal combustion engine. The control apparatus monitors a change in an amount of negative pressure generated in an intake pipe when the internal combustion engine is started, and obtains information related to an alcohol concentration of fuel used in the internal combustion engine. The control apparatus also calculates a fuel injection quantity necessary to initiate combustion in cylinders belonging to a second cylinder group, based on the amount of negative pressure generated in the intake pipe and the alcohol concentration of the fuel, and initiates combustion in each cylinder belonging to the second cylinder group when the necessary fuel injection quantity enters a range of quantities that are able to be injected by corresponding injectors.Type: GrantFiled: February 21, 2011Date of Patent: June 10, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Aso, Hiroshi Tanaka
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Patent number: 8671902Abstract: A control apparatus for an internal combustion engine that can suppress the emission of unburned HC accompanying start-up of an internal combustion engine. The control apparatus including a fuel supply control unit that initially supplies fuel to only some cylinders, and delays the start of fuel supply to delayed cylinders that are cylinders other than the aforementioned cylinders; an engine discharge gas HC amount predicting unit that calculates a relationship between a delayed cylinder starting engine speed that is a engine speed at a timing at which a cycle starts in which a delayed cylinder initially carries out combustion and a predicted value of an engine discharge gas HC amount; and a target engine speed calculating unit that calculates a target engine speed that is a target value of the delayed cylinder starting engine speed.Type: GrantFiled: December 24, 2010Date of Patent: March 18, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Aso, Hiroshi Tanaka
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Publication number: 20130255630Abstract: A control apparatus for an internal combustion engine that can suppress the emission of unburned HC accompanying start-up of an internal combustion engine. The control apparatus including a fuel supply control unit that initially supplies fuel to only some cylinders, and delays the start of fuel supply to delayed cylinders that are cylinders other than the aforementioned cylinders; an engine discharge gas HC amount predicting unit that calculates a relationship between a delayed cylinder starting engine speed that is a engine speed at a timing at which a cycle starts in which a delayed cylinder initially carries out combustion and a predicted value of an engine discharge gas HC amount; and a target engine speed calculating unit that calculates a target engine speed that is a target value of the delayed cylinder starting engine speed.Type: ApplicationFiled: December 24, 2010Publication date: October 3, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Aso, Hiroshi Tanaka
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Patent number: 8464515Abstract: An ammonia burning internal combustion engine in which, in addition to ammonia, a reformed gas reformed at a reformer is fed into a combustion chamber. When a reforming ability of the reformer is less than a predetermined reforming ability, an ammonia ratio is increased to a ratio more than the ammonia ratio after completion of engine warmup set in advance in accordance with an operation state of the engine, and secondary air is fed from a secondary air feeding device into an engine exhaust passage upstream of an exhaust purification catalyst.Type: GrantFiled: May 21, 2010Date of Patent: June 18, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Aso, Takahiko Fujiwara, Hiroshi Tanaka