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公开(公告)号：US20180245529A1
公开(公告)日：2018-08-30
申请号：US15757624
申请日：2017-02-03
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tadasuke Matsumoto , Shouichi Aiga , Yoshitomo Matsuo , Kazuhiro Nishimura , Tomoaki Fujiyama
CPC classification number: F02D41/0052 , F02B37/18 , F02B37/22 , F02D21/08 , F02D41/0077 , F02M26/01 , F02M26/05 , F02M26/07 , F02M26/22 , F02M26/47 , F02P5/045 , Y02T10/144
Abstract: An engine control device including: a turbocharger; an EGR device that includes an EGR passage, an EGR valve, and an EGR cooler; and a PCM that, based on an operation state of an engine, controls the EGR valve to adjust an EGR rate that is a ratio of an EGR gas amount to a total amount of gas introduced to a cylinder of the engine. The PCM controls the EGR valve such that, in a high load range and a medium load range for the engine, the EGR device recirculates the EGR gas into an intake passage; and controls the EGR valve such that an EGR rate in the high load range is lower than an EGR rate in the medium load range at a same engine speed.
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公开(公告)号：US10196969B2
公开(公告)日：2019-02-05
申请号：US15235150
申请日：2016-08-12
Applicant: MAZDA MOTOR CORPORATION
Inventor： Einosuke Suekuni , Junji Umemura , Shuhei Tsujita , Makoto Mihara , Tomoaki Fujiyama , Hiroyuki Hamada , Kouji Hadama , Masahiro Ikeda
Abstract: An exhaust device for an engine, interposed between an engine body, and a supercharger to be driven by a pressure of exhaust gas to be discharged from the engine body, includes a first exhaust passage and a second exhaust passage which introduce exhaust gas to the supercharger; a partition wall disposed between the first exhaust passage and the second exhaust passage, and configured to partition the first exhaust passage and the second exhaust passage from each other; and a valve disposed within the second exhaust passage, and configured to adjust the flow rate of exhaust gas flowing through the second exhaust passage. The partition wall includes a communication portion for communicating between the first exhaust passage and the second exhaust passage.
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公开(公告)号：US20170089284A1
公开(公告)日：2017-03-30
申请号：US15267033
申请日：2016-09-15
Applicant: Mazda Motor Corporation
Inventor： Shin Miura , Kazuhiro Nishimura , Tomoaki Fujiyama , Takuo Hirano , Akira Suzuki
CPC classification number: F02D41/1447 , F01N3/20 , F02B37/18 , F02D13/0215 , F02D13/0261 , F02D41/0007 , F02D41/025 , F02D41/26 , F02D2041/001 , Y02T10/144
Abstract: A control apparatus of an engine including an intake valve, an exhaust valve, and a variable valve timing mechanism for varying open and close timings of at least one of the intake and exhaust valves, is provided. The control apparatus includes a processor configured to execute a valve controlling module for performing, via the variable valve timing mechanism, a valve overlap in which the intake and exhaust valves are both opened on intake stroke of the engine, and a temperature estimating module for estimating a temperature of exhaust gas at a given location in the exhaust system by estimating a temperature increase of the exhaust gas caused by afterburn and accounting for the temperature increase, the afterburn occurring due to fresh air blowing through a cylinder of the engine to an exhaust system during the valve overlap.
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公开(公告)号：US20170009698A1
公开(公告)日：2017-01-12
申请号：US15183204
申请日：2016-06-15
Applicant: Mazda Motor Corporation
Inventor： Takeshi Tsugawa , Hiroki Morimoto , Nobuhiko Yokoyama , Shouichi Aiga , Yoshitomo Matsuo , Tomoaki Fujiyama , Yoshitaka Wada
CPC classification number: F02D41/401 , F02B23/104 , F02B31/00 , F02B2023/106 , F02B2075/125 , F02B2275/48 , F02D13/0207 , F02D37/02 , F02D41/402 , F02D2041/001 , F02D2041/0015 , F02D2041/389 , F02M61/14 , G01M15/042 , Y02T10/123 , Y02T10/125 , Y02T10/146 , Y02T10/18 , Y02T10/44
Abstract: Provided is a control device of an engine that can certainly suppress and avoid pre-ignition. A control device of an engine is an engine control device for controlling the behavior of fuel that is directly injected into a combustion chamber of a cylinder by a tumble flow, and it has an injector that directly injects the fuel into the combustion chamber, an intake port that generates the tumble flow in the combustion chamber, and an ECU that injects the fuel from the injector at a plurality of injection timings including an intake-stroke-early-half injection timing that is set at an early half of the intake stroke of the cylinder, when an operating state of the engine is in a high-load, low-rotation range.
Abstract translation: 本发明提供一种能够可靠地抑制和避免点火前的发动机的控制装置。 发动机的控制装置是用于通过滚筒控制直接喷射到气缸的燃烧室中的燃料的行为的发动机控制装置，并且其具有将燃料直接喷射到燃烧室中的喷射器，进气口 在燃烧室中产生翻滚流的端口，以及ECU，其以多个喷射定时从喷射器喷射燃料，所述多个喷射定时包括设定在进气冲程的早期一半的进气冲程 - 半预喷射正时 当发动机的操作状态处于高负载，低旋转范围时，气缸。
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公开(公告)号：US11280301B2
公开(公告)日：2022-03-22
申请号：US17093320
申请日：2020-11-09
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yoshihiro Hamazume , Takashi Yoshikawa , Jiro Kato , Taketoshi Yamauchi , Hirofumi Shinohara , Kazuhiro Nakamura , Yoko Inami , Shouichi Aiga , Tomoaki Fujiyama , Kosuke Miyamoto , Takuya Yamada
Abstract: An intake device of an engine comprises an intercooler, an intake passage including a downstream-side intake passage, and an EGR passage recirculating exhaust gas to the downstream-side intake passage. An intake-air supply opening having an opening area smaller than an area of a downstream-side face of an intercooler core is provided at a downstream side wall of a chamber. The downstream-side intake passage includes an extension passage portion extending upwardly along the downstream side wall. The intake-air supply opening includes an upper edge portion which separates the intake air flowing from an inside wall face of the extension passage portion and forms flowing main streams of the intake air inside the extension passage portion. EGR introduction ports are arranged at positions capable of supplying the EGR gas toward the flowing main streams.
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Patent Agency Ranking
公开(公告)号：US10408144B2
公开(公告)日：2019-09-10
申请号：US15757624
申请日：2017-02-03
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tadasuke Matsumoto , Shouichi Aiga , Yoshitomo Matsuo , Kazuhiro Nishimura , Tomoaki Fujiyama
IPC: F02D41/00 , F02M26/07 , F02P5/04 , F02B37/18 , F02B37/22 , F02M26/05 , F02M26/01 , F02D21/08 , F02M26/22 , F02M26/47
Abstract: An engine control device including: a turbocharger; an EGR device that includes an EGR passage, an EGR valve, and an EGR cooler; and a PCM that, based on an operation state of an engine, controls the EGR valve to adjust an EGR rate that is a ratio of an EGR gas amount to a total amount of gas introduced to a cylinder of the engine. The PCM controls the EGR valve such that, in a high load range and a medium load range for the engine, the EGR device recirculates the EGR gas into an intake passage; and controls the EGR valve such that an EGR rate in the high load range is lower than an EGR rate in the medium load range at a same engine speed.
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公开(公告)号：US10400697B2
公开(公告)日：2019-09-03
申请号：US15267033
申请日：2016-09-15
Applicant: Mazda Motor Corporation
Inventor： Shin Miura , Kazuhiro Nishimura , Tomoaki Fujiyama , Takuo Hirano , Akira Suzuki
Abstract: A control apparatus of an engine including an intake valve, an exhaust valve, and a variable valve timing mechanism for varying open and close timings of at least one of the intake and exhaust valves, is provided. The control apparatus includes a processor configured to execute a valve controlling module for performing, via the variable valve timing mechanism, a valve overlap in which the intake and exhaust valves are both opened on intake stroke of the engine, and a temperature estimating module for estimating a temperature of exhaust gas at a given location in the exhaust system by estimating a temperature increase of the exhaust gas caused by afterburn and accounting for the temperature increase, the afterburn occurring due to fresh air blowing through a cylinder of the engine to an exhaust system during the valve overlap.
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公开(公告)号：US10260404B2
公开(公告)日：2019-04-16
申请号：US15422603
申请日：2017-02-02
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yoshiyuki Uehane , Junji Umemura , Tomoaki Fujiyama , Koji Hadama , Makoto Mihara
Abstract: Disclosed herein is a technique for providing an engine supercharger of a reduced size allowing an exhaust gas to be introduced smoothly into a turbine scroll. A turbine for use in this supercharger includes: a turbine lead-in route, into which the exhaust gas is introduced; a turbine scroll formed continuously with the turbine lead-in route to allow the exhaust gas to swirl around inside; a turbine wheel to turn on an axis of rotation; a turbine lead-out route; a wastegate passage to bypass the exhaust gas around the turbine scroll; and a wastegate valve. The turbine lead-in route includes a throat portion having a tapered downstream portion. The wastegate passage branches from that throat portion.
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公开(公告)号：US10180103B2
公开(公告)日：2019-01-15
申请号：US15422600
申请日：2017-02-02
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yoshiyuki Uehane , Junji Umemura , Hideya Horii , Tomoaki Fujiyama
Abstract: Disclosed herein is a technique for providing an engine supercharger allowing an exhaust gas to efficiently act on a turbine in a wide operating range. A turbine for use in a supercharger includes a turbine housing, a turbine scroll formed inside the housing continuously with a turbine lead-in route, and a turbine wheel to turn on an axis of rotation close to a tongue portion. The turbine lead-in route is partitioned by a partition wall into first and second lead-in routes. Exhaust variable valves are provided upstream of the second lead-in route in order to change the flow rate of the exhaust gas to be introduced. When viewed in the direction in which the axis of rotation extends, a downstream end of the partition is aligned with the axis of rotation and the tongue portion.
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公开(公告)号：US09897034B2
公开(公告)日：2018-02-20
申请号：US15183204
申请日：2016-06-15
Applicant: Mazda Motor Corporation
Inventor： Takeshi Tsugawa , Hiroki Morimoto , Nobuhiko Yokoyama , Shouichi Aiga , Yoshitomo Matsuo , Tomoaki Fujiyama , Yoshitaka Wada
IPC: F02D41/40 , G01M15/04 , F02M61/14 , F02D37/02 , F02B31/00 , F02B23/10 , F02D13/02 , F02D41/38 , F02D41/00 , F02B75/12
CPC classification number: F02D41/401 , F02B23/104 , F02B31/00 , F02B2023/106 , F02B2075/125 , F02B2275/48 , F02D13/0207 , F02D37/02 , F02D41/402 , F02D2041/001 , F02D2041/0015 , F02D2041/389 , F02M61/14 , G01M15/042 , Y02T10/123 , Y02T10/125 , Y02T10/146 , Y02T10/18 , Y02T10/44
Abstract: Provided is a control device of an engine that can certainly suppress and avoid pre-ignition. A control device of an engine is an engine control device for controlling the behavior of fuel that is directly injected into a combustion chamber of a cylinder by a tumble flow, and it has an injector that directly injects the fuel into the combustion chamber, an intake port that generates the tumble flow in the combustion chamber, and an ECU that injects the fuel from the injector at a plurality of injection timings including an intake-stroke-early-half injection timing that is set at an early half of the intake stroke of the cylinder, when an operating state of the engine is in a high-load, low-rotation range.
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