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1. 发明授权

US11835001B1 Engine control system 有权
公开(公告)号：US11835001B1
公开(公告)日：2023-12-05
申请号：US18188911
申请日：2023-03-23
申请人： Mazda Motor Corporation
发明人： Takeaki Kudo , Junki Hori , Masatoshi Seto , Tatsuya Fujikawa , Masahisa Yamakawa
IPC分类号： F02D13/02 , F02D41/40 , F02P5/15 , F02P5/04 , F02D41/38
CPC分类号： F02D13/0219 , F02D13/0215 , F02D13/0261 , F02D13/0265 , F02D41/40 , F02P5/045 , F02P5/1502 , F02D2041/389 , F02D2200/021
摘要： A control system for an engine including intake and exhaust valve phase variable devices and a control device is provided. At an engine temperature below a first determination temperature, the control is performed so that an exhaust valve close timing is at or retarded from the exhaust top dead center, an intake valve open timing is retarded from the exhaust valve close timing, and the fuel supply to the combustion chamber starts in an intake stroke on a retarding side of the exhaust valve close timing. At the engine temperature above the first determination temperature and below a second determination temperature, the control is performed so that a negative overlap with both the exhaust and intake valves closed during a period including the exhaust top dead center, or a positive overlap with both the exhaust and intake valves opened during a period including the exhaust top dead center, occurs.

2. 发明公开

US20230383702A1 ENGINE CONTROL SYSTEM 审中-公开
公开(公告)号：US20230383702A1
公开(公告)日：2023-11-30
申请号：US18188911
申请日：2023-03-23
申请人： Mazda Motor Corporation
发明人： Takeaki Kudo , Junki Hori , Masatoshi Seto , Tatsuya Fujikawa , Masahisa Yamakawa
IPC分类号： F02D13/02 , F02D41/40 , F02P5/04 , F02P5/15
CPC分类号： F02D13/0219 , F02D41/40 , F02P5/045 , F02P5/1502 , F02D2200/021 , F02D2041/389
摘要： A control system for an engine including intake and exhaust valve phase variable devices and a control device is provided. At an engine temperature below a first determination temperature, the control is performed so that an exhaust valve close timing is at or retarded from the exhaust top dead center, an intake valve open timing is retarded from the exhaust valve close timing, and the fuel supply to the combustion chamber starts in an intake stroke on a retarding side of the exhaust valve close timing. At the engine temperature above the first determination temperature and below a second determination temperature, the control is performed so that a negative overlap with both the exhaust and intake valves closed during a period including the exhaust top dead center, or a positive overlap with both the exhaust and intake valves opened during a period including the exhaust top dead center, occurs.

3. 发明授权

US11542886B2 Engine system 有权
公开(公告)号：US11542886B2
公开(公告)日：2023-01-03
申请号：US17452919
申请日：2021-10-29
申请人： Mazda Motor Corporation
发明人： Takashi Kaminaga , Tatsuya Fujikawa , Masahisa Yamakawa , Naoya Ito , Ryohei Matsuo , Yuta Sasaki , Junki Hori , Mitsuhiro Muto , Takuma Fujii
IPC分类号： F02D41/40 , F01L1/047 , F01L13/00 , F02D13/02 , F02D41/30 , F02P5/15 , F02D41/38
摘要： An engine system is provided, including a controller which estimates an intake-valve-closing temperature inside a cylinder. When an engine operates at a given speed and a demanded engine load is a first load or a second load (>the first load), the controller controls so that a mixture gas inside the cylinder combusts by compression ignition, and controls so that, at the first load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a first temperature, and at least part of the mixture gas combusts by flame propagation when the intake-valve-closing temperature is below the first temperature, whereas at the second load, the entire mixture gas combusts by compression ignition when the intake-valve-closing temperature is above a second temperature (

4. 发明申请

US20180258884A1 ENGINE 审中-公开
公开(公告)号：US20180258884A1
公开(公告)日：2018-09-13
申请号：US15759495
申请日：2016-09-23
申请人： MAZDA MOTOR CORPORATION , DENSO CORPORATION
发明人： Takayuki Hikita , Masahisa Yamakawa , Tomonori Urushihara , Kazuhiro Nagatsu , Tatsuya Fujikawa , Takashi Youso , Takaaki Nagano , Yuuki Kawai , Toshifumi Hayami
IPC分类号： F02M23/10 , F02F3/26 , F02M61/18
CPC分类号： F02M23/10 , F02B23/0696 , F02B23/101 , F02B2023/085 , F02B2023/102 , F02B2023/103 , F02F3/26 , F02M61/18 , F02M61/1813 , F02M61/1826 , Y02T10/125 , Y02T10/146
摘要： An engine includes: a piston including a cavity; a cylinder head configured so as to form a combustion chamber having a pent roof shape; a fuel injection valve configured to inject fuel in a period from a second half of a compression stroke until a first half of an expansion stroke; and a spark plug arranged at a position corresponding to an upper side of the cavity. Injection openings which are arranged in a circumferential direction surrounding a longitudinal axis of the valve and through each of which the fuel is injected in a direction inclined relative to the longitudinal axis by a predetermined angle is formed such that when a height of a ceiling of the combustion chamber at a position corresponding to an edge end portion of the cavity in an injection direction of the injection opening is large, the injection angle of the injection opening is large.

5. 发明申请

US20160201551A1 COMBUSTION CHAMBER STRUCTURE FOR ENGINE 审中-公开
标题翻译：发动机燃烧室结构
公开(公告)号：US20160201551A1
公开(公告)日：2016-07-14
申请号：US14980243
申请日：2015-12-28
申请人： Mazda Motor Corporation
发明人： Kenji Uchida , Tatsuya Fujikawa , Masahisa Yamakawa , Daisuke Asaji , Kazuhiro Nagatsu , Takashi Kaminaga , Toru Miyamoto , Takashi Youso , Hiroaki Abe
IPC分类号： F02B23/10 , F02F1/42 , F02F3/28
CPC分类号： F02B23/101 , F02B2023/085 , F02B2023/102 , F02B2275/40 , F02F1/4214 , F02F3/28 , Y02T10/125
摘要： A combustion chamber structure for an engine is provided. The structure includes a piston formed with a downward dented cavity in a central part of an upper surface thereof, and a cylinder head forming a combustion chamber having a pent-roof shape. The upper surface of the piston has an annular part extending from an outer edge of the cavity to an outer edge of the upper surface, and surrounding the outer edge of the cavity. The annular part is formed with first and second piston upper surface portions. When the piston is at a top dead center, a ratio of a volume of a space formed between the first piston upper surface portion and a bottom surface of the cylinder head with respect to a volume of a space formed between the second piston upper surface portion and the bottom surface becomes below a predetermined value.
摘要翻译：提供了一种用于发动机的燃烧室结构。该结构包括在其上表面的中心部分形成有向下凹陷腔的活塞和形成具有顶顶形状的燃烧室的气缸盖。活塞的上表面具有从空腔的外边缘延伸到上表面的外边缘并围绕空腔的外边缘的环形部分。环形部分形成有第一和第二活塞上表面部分。当活塞处于上止点时，形成在第一活塞上表面部分和气缸盖底面之间的空间的体积相对于形成在第二活塞上表面部分并且底面变得低于预定值。

6. 发明申请

US20210172397A1 CONTROL DEVICE FOR COMPRESSION SELF-IGNITION ENGINE 有权
公开(公告)号：US20210172397A1
公开(公告)日：2021-06-10
申请号：US17074330
申请日：2020-10-19
申请人： Mazda Motor Corporation
发明人： Naoya Ito , Takashi Kaminaga , Kenji Uchida , Tatsuya Fujikawa , Takashi Youso , Masahisa Yamakawa , Mitsuhiro Muto , Takuma Fujii
IPC分类号： F02D41/40 , F02D41/30 , F02D35/02
摘要： A control device for a compression self-ignition engine includes a fuel injection system and an injection controller. While the engine is operated by CI combustion under a given first condition, a first injection is carried out in which fuel is injected at a first timing in a compression stroke and at which the fuel goes toward a part radially outward of a cavity formed in a crown surface of a piston, and a second injection is suspended. While the engine is operated by the CI combustion under a second condition in which a temperature inside a combustion chamber at a close timing of an intake valve becomes lower than the first condition, at least the second injection is carried out in which the fuel is injected at a second timing later than the first timing in the compression stroke and at which the fuel goes toward the cavity.

7. 发明授权

US10280831B2 Engine 有权
公开(公告)号：US10280831B2
公开(公告)日：2019-05-07
申请号：US15759190
申请日：2016-09-23
申请人： MAZDA MOTOR CORPORATION , DENSO CORPORATION
发明人： Takayuki Hikita , Masahisa Yamakawa , Tomonori Urushihara , Kazuhiro Nagatsu , Tatsuya Fujikawa , Takashi Youso , Takaaki Nagano , Yuuki Kawai , Toshifumi Hayami
IPC分类号： F02B23/10 , F02B23/06 , F02F3/28 , F02F3/26 , F02B15/00 , F02B23/00 , F02M61/18 , F02B75/12
摘要： An engine includes: a piston including a cavity; a cylinder head configured to form a combustion chamber having a pent roof shape; a fuel injection valve configured to inject fuel from a second half of a compression stroke until a first half of an expansion stroke; and a spark plug arranged at a position corresponding to an upper side of the cavity. Injection openings are arranged in a circumferential direction surrounding a longitudinal axis of the valve. The combustion chamber at a compression top dead center is divided into a plurality of fuel injection regions, located in respective injection directions of the injection openings, by vertical surfaces extending radially from the longitudinal axis through a middle between adjacent injection openings. When a volume of the fuel injection region located in the injection direction of the injection opening is large, an opening area of the injection opening is large.

8. 发明申请

US20170159635A1 CONTROLLER OF LASER IGNITION ENGINE 审中-公开
公开(公告)号：US20170159635A1
公开(公告)日：2017-06-08
申请号：US15322078
申请日：2015-06-24
申请人： MAZDA MOTOR CORPORATION
发明人： Takashi Youso , Masahisa Yamakawa , Tatsuya Fujikawa , Atsushi Inoue
IPC分类号： F02P23/04 , F02C7/264 , F23Q13/00
CPC分类号： F02P23/04 , F02C7/264 , F02D35/021 , F02D35/023 , F02D41/009 , F02D43/00 , F02D45/00 , F23Q13/005 , F23R2900/00006
摘要： A controller of a laser ignition engine configured to perform ignition by using a laser ignition device configured to emit a laser beam condensed by a lens includes: a combustion state related value acquiring portion configured to acquire a combustion state related value related to a combustion state of the engine; and a contamination determining portion configured to compare the combustion state related value acquired by the combustion state related value acquiring portion with a combustion state determining value to determine whether or not the laser ignition device is contaminated, the combustion state determining value being defined based on the combustion state of the engine when the laser ignition device is not contaminated.

9. 发明申请

US20160201635A1 CONTROL DEVICE OF ENGINE 有权
标题翻译：发动机控制装置
公开(公告)号：US20160201635A1
公开(公告)日：2016-07-14
申请号：US14951924
申请日：2015-11-25
申请人： Mazda Motor Corporation
发明人： Takaaki Nagano , Masahisa Yamakawa , Takashi Youso , Kazuhiro Nagatsu , Atsushi Inoue , Kota Matsumoto , Takashi Kaminaga , Toru Miyamoto
IPC分类号： F02P5/04 , F02D41/40 , F02D41/00
CPC分类号： F02P5/045 , F02B1/12 , F02B23/101 , F02B29/0418 , F02B29/0437 , F02D13/0207 , F02D13/0219 , F02D13/0265 , F02D37/02 , F02D41/005 , F02D41/006 , F02D41/0065 , F02D41/0097 , F02D41/06 , F02D41/3023 , F02D41/3035 , F02D41/401 , F02D41/402 , F02D2250/38 , F02M26/25 , F02M26/33 , F02M26/47 , Y02T10/146 , Y02T10/44 , Y02T10/47
摘要： A control device of an engine is provided. The engine is operated at a high compression ratio, a geometric compression ratio of the engine being 14:1 or higher. The control device includes a fuel injection controller for controlling a fuel injector of the engine to start a fuel injection in a latter half of a compression stroke within an engine operating range where an engine speed is below a predetermined value and an engine load is above a predetermined value, and an ignition controller for controlling an ignition plug of the engine to retard an ignition timing when a timing for the fuel injection controller to start the fuel injection is on a retarding side of a predetermined timing, the ignition timing being retarded based on a retarding amount of the fuel injection start timing from the predetermined timing.
摘要翻译：提供发动机的控制装置。发动机以高压缩比操作，发动机的几何压缩比为14:1或更高。控制装置包括燃料喷射控制器，用于控制发动机的燃料喷射器，以在发动机运转范围低于预定值并且发动机负载高于发动机运转的发动机工作范围内的压缩行程的后半部分开始燃料喷射以及点火控制器，用于当燃料喷射控制器开始燃料喷射的定时处于预定定时的延迟侧时，控制发动机的火花塞延迟点火正时，点火正时基于从预定定时开始燃料喷射开始定时的延迟量。

10. 发明申请

US20160201596A1 COMBUSTION CHAMBER STRUCTURE FOR ENGINE 审中-公开
标题翻译：发动机燃烧室结构
公开(公告)号：US20160201596A1
公开(公告)日：2016-07-14
申请号：US14979329
申请日：2015-12-22
申请人： Mazda Motor Corporation
发明人： Takaaki Nagano , Masahisa Yamakawa , Takashi Youso
IPC分类号： F02F1/24
CPC分类号： F02F1/242 , F02B23/0696 , F02B23/101 , F02B2023/085 , F02B2275/14 , Y02T10/125
摘要： A combustion chamber structure for an engine, wherein the structure includes a piston formed with a downward dented cavity at a central part of an upper surface thereof, a fuel injector provided above the piston and in an extension line of a central axis of the piston, and for injecting fuel toward the cavity of the piston, and ignition plugs provided above the cavity and separated from the fuel injector in radial directions of the piston. A radius of the cavity, a depth of the cavity, and each of positions of the ignition plugs are designed so that a distance by which a mixture gas containing the fuel travels from a fuel injection start timing of the fuel injector to an ignition timing of the ignition plug becomes equal to or longer than a length of a path through which the injected fuel reaches each ignition plug via the cavity.
摘要翻译：一种用于发动机的燃烧室结构，其中所述结构包括在其上表面的中心部分处形成有向下凹陷腔的活塞，设置在所述活塞上方和所述活塞的中心轴线的延伸线中的燃料喷射器，并且用于将燃料朝向活塞的空腔喷射，以及设置在空腔上方并沿着活塞的径向方向与燃料喷射器分离的火花塞。空腔的半径，空腔的深度和火花塞的每个位置被设计成使得包含燃料的混合气体的距离从燃料喷射器的燃料喷射开始正时行进到点燃正时火花塞变得等于或长于喷射燃料经由空腔到达每个火花塞的路径的长度。

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