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1. 发明授权

US10731547B2 Control device and method for turbocharged engine 有权
公开(公告)号：US10731547B2
公开(公告)日：2020-08-04
申请号：US16164354
申请日：2018-10-18
申请人： Mazda Motor Corporation
发明人： Hiroshi Minamoto , Nobuo Yunoki , Kenichiro Suzuki
IPC分类号： F02B37/18 , F02B37/00 , F02B37/013 , F02B37/22 , F02B37/24 , F02D41/12 , F02D41/10 , F02D41/00 , F02B37/12
摘要： A smooth shift is achieved between an operating region in which a first turbocharger is mainly operated and an operating region in which a second turbocharger is mainly operated. A PCM controls a throttle valve to use a first supercharging region in which a gas flow through an exhaust bypass passage is reduced and a second supercharging region in which the gas flow through the exhaust bypass passage is promoted differently based on the operating state of an engine. In an early stage of a shift from the first supercharging region to the second supercharging region, the PCM executes bridge control to allow the flow velocity of exhaust gas flowing into a large turbine to be higher than at a point in time at which the shift starts.

2. 发明授权

US10570808B2 Method and system for controlling engine 有权
公开(公告)号：US10570808B2
公开(公告)日：2020-02-25
申请号：US15973060
申请日：2018-05-07
申请人： Mazda Motor Corporation
发明人： Daisuke Fukuda , Akira Taguchi , Hiroshi Minamoto , Naotoshi Shirahashi , Yudai Kato , Yoshie Kakuda , Yasuyuki Sagane , Sangkyu Kim , Daisuke Shimo , Kazunori Hirabayashi
IPC分类号： F02B23/06 , F02D41/40 , F02F3/28 , F02D41/38
摘要： A control system of an engine is provided, which includes a piston formed with a cavity and configured to reciprocate in a cylinder along a center axis of the cylinder, and a fuel injector disposed facing a top surface of the piston and configured to inject fuel along an injection axis. When the piston is located near a top dead center of compression stroke, the fuel injector performs a first injection so that the fuel flows from the fuel injector toward the cavity along the injection axis, collides with an inner surface of the cavity, then flows back toward the fuel injector along the inner surface of the cavity from a position offset from the injection axis. The fuel injector performs a second injection toward the cavity at a timing after the first injection and at which the fuel of the first injection flows back.

3. 发明申请

US20190093529A1 Exhaust Purification Device of Engine, Vehicle Engine Including Exhaust Purification Device, and Method of Controlling Engine 审中-公开
公开(公告)号：US20190093529A1
公开(公告)日：2019-03-28
申请号：US16108699
申请日：2018-08-22
申请人： Mazda Motor Corporation
发明人： Masato Katsuta , Yasunori Uesugi , Hiroshi Minamoto
IPC分类号： F01N3/029 , B01D53/94 , F01N3/20
摘要： In an engine which includes an oxidation catalyst and an SCR catalyst in an exhaust passage, a first flow regulating control in which a control valve is controlled so as to decrease a flow rate of an exhaust gas which passes through the oxidation catalyst and the SCR catalyst is performed in a case where the oxidation catalyst is in a low temperature state at the time of performing deceleration fuel cut, and a second flow regulating control in which the control valve is controlled so as to increase the flow rate of the exhaust gas which passes through the oxidation catalyst and the SCR catalyst is performed in a case where the oxidation catalyst is in a temperature state higher than the low temperature state and the SCR catalyst is in a low temperature state at the time of performing the deceleration fuel cut.

4. 发明申请

US20180340488A1 METHOD AND SYSTEM FOR CONTROLLING ENGINE 审中-公开
公开(公告)号：US20180340488A1
公开(公告)日：2018-11-29
申请号：US15973060
申请日：2018-05-07
申请人： Mazda Motor Corporation
发明人： Daisuke Fukuda , Akira Taguchi , Hiroshi Minamoto , Naotoshi Shirahashi , Yudai Kato , Yoshie Kakuda , Yasuyuki Sagane , Sangkyu Kim , Daisuke Shimo , Kazunori Hirabayashi
IPC分类号： F02D41/40 , F02F3/28
摘要： A control system of an engine is provided, which includes a piston formed with a cavity and configured to reciprocate in a cylinder along a center axis of the cylinder, and a fuel injector disposed facing a top surface of the piston and configured to inject fuel along an injection axis. When the piston is located near a top dead center of compression stroke, the fuel injector performs a first injection so that the fuel flows from the fuel injector toward the cavity along the injection axis, collides with an inner surface of the cavity, then flows back toward the fuel injector along the inner surface of the cavity from a position offset from the injection axis. The fuel injector performs a second injection toward the cavity at a timing after the first injection and at which the fuel of the first injection flows back.

5. 发明申请

US20170292436A1 DIESEL ENGINE 审中-公开
公开(公告)号：US20170292436A1
公开(公告)日：2017-10-12
申请号：US15513899
申请日：2015-06-05
申请人： MAZDA MOTOR CORPORATION
发明人： Yoshie Kakuda , Daisuke Shimo , Sangkyu Kim , Hiroshi Minamoto , Kazuya Niida
IPC分类号： F02B3/06 , F02G5/04 , F02D41/06 , F01K23/14
CPC分类号： F02B3/06 , F01K23/14 , F02B23/0669 , F02B23/0672 , F02B37/24 , F02D13/02 , F02D15/00 , F02D23/00 , F02D41/0007 , F02D41/067 , F02D41/068 , F02D41/40 , F02D41/402 , F02D41/403 , F02G5/04 , Y02T10/125 , Y02T10/144 , Y02T10/44
摘要： A diesel engine of the present invention includes a turbocharger including: a turbine provided on an exhaust passage; a compressor provided on an intake passage; and a plurality of nozzle vanes provided around the turbine to control a flow velocity of an exhaust gas colliding with the turbine, angles of the nozzle vanes being changeable. In a case where a ratio of a volume of a combustion chamber when the intake valve is closed to a volume of the combustion chamber when a piston is located at a top dead center is denoted by an effective compression ratio εe, and a total displacement of the engine is denoted by V (L), the effective compression ratio εe is set to satisfy Formula (1) “−0.67×V+15.2≦εe≦14.8.”

6. 发明申请

US20160069300A1 EXHAUST GAS RECIRCULATION CONTROL DEVICE FOR ENGINE 审中-公开
标题翻译：用于发动机的排气回送控制装置
公开(公告)号：US20160069300A1
公开(公告)日：2016-03-10
申请号：US14821134
申请日：2015-08-07
申请人： Mazda Motor Corporation
发明人： Hiroshi Minamoto , Kotaro Takahashi
IPC分类号： F02M25/07
CPC分类号： F02D41/08 , F02D41/0007 , F02D41/005 , F02D41/0065 , F02D41/0225 , F02M26/05 , F02M26/06 , F02M26/07 , F02M26/42 , Y02T10/47
摘要： An exhaust gas recirculation control device for an engine is provided. The device includes an EGR passage connecting an exhaust passage of the engine with an intake passage of the engine, an EGR amount adjustor for adjusting an EGR amount that is a recirculation amount of exhaust gas of the engine through the EGR passage, an adjustor controller for controlling the EGR adjustor to adjust the EGR amount, and a gear position detector for detecting a gear position of a transmission of a vehicle on which the engine is mounted. When the gear position detected by the gear position detector during an idle operation of the engine is a non-travel position, the adjustor controller performs an EGR amount increase control in which the EGR amount adjustor is controlled to increase the EGR amount to be higher than when the gear position is a travel position.
摘要翻译：提供了一种用于发动机的废气再循环控制装置。该装置包括将发动机的排气通路与发动机的进气通路连接的EGR通路，用于调节作为EGR通路的发动机的再循环量的EGR量的EGR量调节器，控制EGR调节器以调节EGR量;以及齿轮位置检测器，用于检测其上安装有发动机的车辆的变速器的档位。当在发动机怠速运转期间由变速位置检测器检测到的档位是非行驶位置时，调节器控制器执行EGR量增加控制，其中EGR量调节器被控制以将EGR量增加到高于当档位是行驶位置时。

7. 发明授权

US10669966B2 Control device and method for diesel engine 审中-公开
公开(公告)号：US10669966B2
公开(公告)日：2020-06-02
申请号：US16156865
申请日：2018-10-10
申请人： Mazda Motor Corporation
发明人： Kazuma Suesada , Hiroshi Minamoto , Yasunori Uesugi
IPC分类号： F02D41/40 , F02D41/00 , F02D41/04 , F02D41/12 , F02D41/38
摘要： The silence of a diesel engine is enhanced. A PCM detects an actual supercharging pressure of a gas, and controls an injection mode of a fuel through an injector, thereby executing main injection that is started near a compression top dead center or pilot injection that is executed prior to the main injection depending on an operating state of an engine. If the degree of opening of an accelerator pedal decreases during operation of a large turbocharger, and the actual supercharging pressure is equal to or higher than a predetermined value, the PCM executes cylinder pressure control that allows an interval between a start timing of the pilot injection and a start timing of the main injection to be broader than if the actual supercharging pressure is less than a predetermined value.

8. 发明申请

US20190120128A1 CONTROL DEVICE AND METHOD FOR TURBOCHARGED ENGINE 审中-公开
公开(公告)号：US20190120128A1
公开(公告)日：2019-04-25
申请号：US16164354
申请日：2018-10-18
申请人： Mazda Motor Corporation
发明人： Hiroshi Minamoto , Nobuo Yunoki , Kenichiro Suzuki
IPC分类号： F02B37/18 , F02B37/00 , F02B37/013 , F02B37/22 , F02B37/24
CPC分类号： F02B37/183 , F02B37/004 , F02B37/013 , F02B37/18 , F02B37/22 , F02B37/24 , F02B2037/122 , F02D41/0005 , F02D41/0007 , F02D41/10 , F02D41/12
摘要： A smooth shift is achieved between an operating region in which a first turbocharger is mainly operated and an operating region in which a second turbocharger is mainly operated. A PCM controls a throttle valve to use a first supercharging region in which a gas flow through an exhaust bypass passage is reduced and a second supercharging region in which the gas flow through the exhaust bypass passage is promoted differently based on the operating state of an engine. In an early stage of a shift from the first supercharging region to the second supercharging region, the PCM executes bridge control to allow the flow velocity of exhaust gas flowing into a large turbine to be higher than at a point in time at which the shift starts.

9. 发明申请

US20190112997A1 CONTROL DEVICE AND METHOD FOR DIESEL ENGINE 审中-公开
公开(公告)号：US20190112997A1
公开(公告)日：2019-04-18
申请号：US16156865
申请日：2018-10-10
申请人： Mazda Motor Corporation
发明人： Kazuma Suesada , Hiroshi Minamoto , Yasunori Uesugi
IPC分类号： F02D41/40 , F02D41/00
摘要： The silence of a diesel engine is enhanced. A PCM detects an actual supercharging pressure of a gas, and controls an injection mode of a fuel through an injector, thereby executing main injection that is started near a compression top dead center or pilot injection that is executed prior to the main injection depending on an operating state of an engine. If the degree of opening of an accelerator pedal decreases during operation of a large turbocharger, and the actual supercharging pressure is equal to or higher than a predetermined value, the PCM executes cylinder pressure control that allows an interval between a start timing of the pilot injection and a start timing of the main injection to be broader than if the actual supercharging pressure is less than a predetermined value.

10. 发明授权

US10662842B2 Exhaust purification device of engine, vehicle engine including exhaust purification device, and method of controlling engine 有权
公开(公告)号：US10662842B2
公开(公告)日：2020-05-26
申请号：US16108699
申请日：2018-08-22
申请人： Mazda Motor Corporation
发明人： Masato Katsuta , Yasunori Uesugi , Hiroshi Minamoto
IPC分类号： F01N3/10 , F01N3/029 , B01D53/94 , F02B37/04 , F01N9/00 , F01N3/20 , F02M26/05 , F02B39/10 , F02B37/18
摘要： In an engine which includes an oxidation catalyst and an SCR catalyst in an exhaust passage, a first flow regulating control in which a control valve is controlled so as to decrease a flow rate of an exhaust gas which passes through the oxidation catalyst and the SCR catalyst is performed in a case where the oxidation catalyst is in a low temperature state at the time of performing deceleration fuel cut, and a second flow regulating control in which the control valve is controlled so as to increase the flow rate of the exhaust gas which passes through the oxidation catalyst and the SCR catalyst is performed in a case where the oxidation catalyst is in a temperature state higher than the low temperature state and the SCR catalyst is in a low temperature state at the time of performing the deceleration fuel cut.

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