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公开(公告)号：US20170058763A1
公开(公告)日：2017-03-02
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
CPC classification number: F02B37/186 , F01N13/10 , F01N13/107 , F01N2240/36 , F01N2260/10 , F01N2340/06 , F01N2390/02 , F02B37/02 , F02B37/22 , F02D9/04 , F02D41/0007 , Y02T10/144
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.
Abstract translation: 用于发动机的排气装置，其设置在发动机主体和要从发动机主体排出的排气压力下驱动的增压器之间，包括第一排气通道和将排气引入增压器的第二排气通道 ; 分隔壁，设置在所述第一排气通道和所述第二排气通道之间，并且被构造成将所述第一排气通道和所述第二排气通道彼此分隔开; 以及阀，设置在所述第二排气通道内，并且被配置为调节流过所述第二排气通道的废气的流量。 分隔壁包括用于在第一排气通道和第二排气通道之间连通的连通部分。
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公开(公告)号：US20200370499A1
公开(公告)日：2020-11-26
申请号：US16811199
申请日：2020-03-06
Applicant: Mazda Motor Corporation
Inventor： Kazuhiro TAKEMOTO , Michio ITO , Masanari SUEOKA , Kazuhiro NISHIMURA , Kouji HADAMA , Masataka SUMITA , Masami NISHIDA
Abstract: A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism sets an air-fuel ratio of a fuel-air mixture to be generated within a combustion chamber to be equal to or leaner than a theoretical air-fuel ratio, based on an operating condition of an engine; drives the fuel injection valve, based on the set air-fuel ratio; estimates a deposition amount of deposits on an injection hole of the fuel injection valve, based on an operating condition of the engine; causes the fuel pressure adjustment mechanism to increase the fuel pressure, when the estimated deposition amount of deposits exceeds a predetermined value; and restricts the fuel pressure from increasing, even when the estimated deposition amount of deposits exceeds the predetermined value, as long as the fuel-air ratio is set to an air-fuel ratio leaner than the theoretical fuel-air ratio.
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公开(公告)号：US20200370500A1
公开(公告)日：2020-11-26
申请号：US16811142
申请日：2020-03-06
Applicant: Mazda Motor Corporation
Inventor： Kazuhiro TAKEMOTO , Michio ITO , Masanari SUEOKA , Kazuhiro NISHIMURA , Kouji HADAMA , Masataka SUMITA , Masami NISHIDA
Abstract: A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism integrates a deposition amount of deposits per unit time, and estimates a deposition amount of deposits on an injection hole of the fuel injection valve. The controller causes the fuel pressure adjustment mechanism to increase a fuel pressure, when the estimated deposition amount exceeds a predetermined value, and corrects the unit deposition amount acquired by the deposition amount estimation according to the set fuel injection timing of the fuel injection valve. The controller corrects such that as compared with the unit deposition amount when the fuel injection timing is set to a first timing away from a top dead center of the piston by a first period, the unit deposition amount decreases when the fuel injection timing is set to a second timing away by a second period longer than the first period.
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