Patents by Inventor Koichi Funaki
Koichi Funaki 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: 20230398851Abstract: A clutch unit (20) includes a coupling element (23) configured to, in a power transmission enabled manner, couple an output shaft (13) of an engine (10) and an input shaft (16) of a hydraulic pump (15) driven by driving force of the engine (10), and a motor generator (18) configured to generate driving force separately from the engine (10), in which the coupling element (23) includes a driving-side coupling portion (23a) configured to be coupled to a first coupling portion (11a) that is provided in the output shaft (13), and a driven-side coupling portion (23b) configured to be coupled to a second coupling portion (15a) that is provided in the input shaft (16) and that is configured to be coupled to the first coupling portion (11a).Type: ApplicationFiled: December 3, 2021Publication date: December 14, 2023Inventors: Jirou ARAKAWA, Koichi FUNAKI
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Publication number: 20230398853Abstract: A clutch unit (20) includes a coupling element (23) configured to, in a power transmission enabled manner, couple an output shaft (13) of an engine (10) and an input shaft (16) of a hydraulic pump (15) driven by driving force of the engine (10), and a motor generator (18) configured to generate driving force separately from the engine (10), in which the motor generator (18) is disposed to avoid the coupling element (23) as viewed from an axial direction of the output shaft (13).Type: ApplicationFiled: December 3, 2021Publication date: December 14, 2023Inventors: Jirou ARAKAWA, Koichi FUNAKI
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Publication number: 20230202455Abstract: A hybrid system which can calculate various type of more proper required torques is provided while input factors which can be used for calculating the various types of required torques are limited. A hybrid system 2 includes a rotation sensor 31 which detects a rotation number of an engine 3, at least either one of an accelerator opening-degree sensor 61 which detects an accelerator opening degree and a rotation-number instruction unit 62 which transmits a rotation-number signal instructing a certain rotation number to the engine 3, and a control unit 5 which controls an operation of the engine 3.Type: ApplicationFiled: October 22, 2021Publication date: June 29, 2023Inventors: Kazuaki KOYAMA, Ryota KIMURA, Koichi FUNAKI, Yasuo FUJII, Tamotsu KUNO
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Patent number: 10619546Abstract: There is provided an exhaust treatment device for a diesel engine that can prevent unnecessary alarm for ash deposition from being issued. In the exhaust treatment device, a timer measures integrated time of a state of non-regenerative operation which ranges from an end of DPF regeneration to a next time point where the differential pressure reaches a regeneration request value. A counter acquires the short interval count if the integrated time is a short interval shorter than a predetermined decision time. An alarm device issues an alarm if the consecutive short interval count reaches a predetermined plural necessary count for alarm. A short interval count having been already acquired is preferably reset to 0 if the integrated time of the state of non-regenerative operation is a long interval, not shorter than a predetermined decision time, before the short interval count reaches the predetermined necessary count for alarm.Type: GrantFiled: April 23, 2019Date of Patent: April 14, 2020Assignee: KUBOTA CorporationInventors: Katsushi Inoue, Koichi Funaki, Masanori Fujiwara, Tamotsu Kuno, Kentaro Kita, Yuki Yoshita
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Publication number: 20190323406Abstract: There is provided an exhaust treatment device for a diesel engine that can prevent unnecessary alarm for ash deposition from being issued. In the exhaust treatment device, a timer measures integrated time of a state of non-regenerative operation which ranges from an end of DPF regeneration to a next time point where the differential pressure reaches a regeneration request value. A counter acquires the short interval count if the integrated time is a short interval shorter than a predetermined decision time. An alarm device issues an alarm if the consecutive short interval count reaches a predetermined plural necessary count for alarm. A short interval count having been already acquired is preferably reset to 0 if the integrated time of the state of non-regenerative operation is a long interval, not shorter than a predetermined decision time, before the short interval count reaches the predetermined necessary count for alarm.Type: ApplicationFiled: April 23, 2019Publication date: October 24, 2019Inventors: Katsushi INOUE, Koichi FUNAKI, Masanori FUJIWARA, Tamotsu KUNO, Kentaro KITA, Yuki YOSHITA
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Patent number: 9441514Abstract: It is an object of the present invention to provide a diesel engine in which an engine body, a DPF case and an SCR catalyst case can be placed compactly. In the diesel engine including the engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case and an SCR catalyst is accommodated in the SCR catalyst case, the DPF case and the SCR catalyst case are mounted on the engine body, the DPF case is supported by the engine body through an exhaust gas introducing pipe, and the SCR catalyst case is supported by the DPF case through an exhaust gas relay pipe.Type: GrantFiled: August 19, 2014Date of Patent: September 13, 2016Assignee: Kubota CorporationInventors: Tamon Tanaka, Koichi Funaki, Hirozumi Kuwabara, Soichiro Watanabe, Yoshitaka Taira, Tetsuya Kosaka, Satoshi Inayama
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Patent number: 9416707Abstract: It is an object of the present invention to provide a diesel engine in which a DPF case and an SCR catalyst case can be placed compactly. The diesel engine includes an engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case, an SCR catalyst is accommodated in the SCR catalyst case, and the DPF case and the SCR catalyst case are mounted on the engine body. The SCR catalyst case is placed in a direction which extends along the DPF case. The DPF case is placed directly above a flywheel housing and right behind a cylinder head cover, and the SCR catalyst case is placed directly above the cylinder head cover.Type: GrantFiled: August 22, 2014Date of Patent: August 16, 2016Assignee: KUBOTA CorporationInventors: Tamon Tanaka, Koichi Funaki, Hirozumi Kuwabara, Soichiro Watanabe, Yoshitaka Taira, Tetsuya Kosaka, Satoshi Inayama
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Publication number: 20150184566Abstract: It is an object of the present invention to provide a diesel engine in which an engine body, a DPF case and an SCR catalyst case can be placed compactly. In the diesel engine including the engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case and an SCR catalyst is accommodated in the SCR catalyst case, the DPF case and the SCR catalyst case are mounted on the engine body, the DPF case is supported by the engine body through an exhaust gas introducing pipe, and the SCR catalyst case is supported by the DPF case through an exhaust gas relay pipe.Type: ApplicationFiled: August 19, 2014Publication date: July 2, 2015Inventors: Tamon TANAKA, Koichi FUNAKI, Hirozumi KUWABARA, Soichiro WATANABE, Yoshitaka TAIRA, Tetsuya KOSAKA, Satoshi INAYAMA
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Publication number: 20150089930Abstract: It is an object of the present invention to provide a diesel engine in which a DPF case and an SCR catalyst case can be placed compactly. The diesel engine includes an engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case, an SCR catalyst is accommodated in the SCR catalyst case, and the DPF case and the SCR catalyst case are mounted on the engine body. The SCR catalyst case is placed in a direction which extends along the DPF case. The DPF case is placed directly above a flywheel housing and right behind a cylinder head cover, and the SCR catalyst case is placed directly above the cylinder head cover.Type: ApplicationFiled: August 22, 2014Publication date: April 2, 2015Inventors: Tamon TANAKA, Koichi FUNAKI, Hirozumi KUWABARA, Soichiro WATANABE, Yoshitaka TAIRA, Tetsuya KOSAKA, Satoshi INAYAMA
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Patent number: 6899076Abstract: A swirl chamber used in association with a combustion chamber for diesel engines, includes a pair of sub-nozzle holes on the opposite sides of a main nozzle hole to supply a secondary air into the swirl chamber, the sub-nozzle holes being positioned such that the secondary air ejected therethrough is fully utilized for the combustion in the swirl chamber, thereby securing the complete combustion and the reduction of environmental contaminants such as NOx and fumes.Type: GrantFiled: September 16, 2003Date of Patent: May 31, 2005Assignee: Kubota CorporationInventors: Koichi Funaki, Seishiro Kubo
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Publication number: 20040060536Abstract: A swirl chamber used in association with a combustion chamber for diesel engines, includes a pair of sub-nozzle holes on the opposite sides of a main nozzle hole to supply a secondary air into the swirl chamber, the sub-nozzle holes being positioned such that the secondary air ejected therethrough is fully utilized for the combustion in the swirl chamber, thereby securing the complete combustion and the reduction of environmental contaminants such as NOx and fumes.Type: ApplicationFiled: September 16, 2003Publication date: April 1, 2004Applicant: KUBOTA CorporationInventors: Koichi Funaki, Seishiro Kubo
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Patent number: RE41344Abstract: A swirl chamber used in association with a combustion chamber for diesel engines, includes a pair of sub-nozzle holes on the opposite sides of a main nozzle hole to supply a secondary air into the swirl chamber, the sub-nozzle holes being positioned such that the secondary air ejected therethrough is fully utilized for the combustion in the swirl chamber, thereby securing the complete combustion and the reduction of environmental contaminants such as NOx and fumes.Type: GrantFiled: November 17, 2006Date of Patent: May 25, 2010Assignee: Kubota CorporationInventors: Koichi Funaki, Seishiro Kubo