公开(公告)号：US11203969B2

公开(公告)日：2021-12-21

申请号：US17051700

申请日：2019-04-23

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Keiji Maruyama ,  Masanari Sueoka ,  Ryohei Ono ,  Yuji Harada ,  Toru Miyamoto ,  Atsushi Inoue ,  Tatsuhiro Tokunaga ,  Takuya Ohura ,  Yusuke Kawai ,  Tomohiro Nishida ,  Keita Arai ,  Yodai Yamaguchi

IPC: F02B11/00 ,  F02D41/30 ,  F02B31/04 ,  F02D41/00 ,  F02D41/40 ,  F02P5/06 ,  F02D13/02 ,  F02D41/38

Abstract: An engine control apparatus includes an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be higher when an engine speed is high than when the engine speed is low.

公开(公告)号：US11199152B2

公开(公告)日：2021-12-14

申请号：US17051649

申请日：2019-04-17

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Keiji Maruyama ,  Masanari Sueoka ,  Ryohei Ono ,  Yuji Harada ,  Toru Miyamoto ,  Atsushi Inoue ,  Tatsuhiro Tokunaga ,  Takuya Ohura ,  Yusuke Kawai ,  Tomohiro Nishida ,  Keita Arai ,  Yodai Yamaguchi

IPC: F02D41/30 ,  F02B31/04 ,  F02D41/40 ,  F02P5/04 ,  F02P5/153 ,  F02P15/08

Abstract: Provided is an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when an in-cylinder pressure specified by an in-cylinder pressure specification section is high than when the in-cylinder pressure is low.

公开(公告)号：US10895215B2

公开(公告)日：2021-01-19

申请号：US16107630

申请日：2018-08-21

Applicant: Mazda Motor Corporation

Inventor： Naohiro Yamaguchi ,  Hiroki Morimoto ,  Toru Miyamoto ,  Akira Noomo

IPC: F02D41/30 ,  F01B11/02 ,  F01B1/10 ,  F02D41/40 ,  F02B31/08 ,  F02B23/10 ,  F02B1/14 ,  F02B11/00 ,  F02B23/06 ,  F02D41/00 ,  F02B31/00

Abstract: A control system for a pre-mixture compression-ignition engine is provided, configured such that in a first combustion mode, the control unit controls the fuel injection valve to have a fuel amount within a mixture gas in an outer circumferential portion of the combustion chamber larger than in the center portion, the swirl generating part to generate a swirl flow in the outer circumferential portion, and the spark plug to ignite the mixture gas in the center portion. In a second combustion mode, the control unit controls the fuel injection valve to start a fuel injection on intake stroke so that the mixture gas is formed in the entire combustion chamber, the swirl generating part so that a swirl flow becomes weaker than in the first combustion mode, and the spark plug to ignite the mixture gas before CTDC.

公开(公告)号：US20180283296A1

公开(公告)日：2018-10-04

申请号：US15868067

申请日：2018-01-11

Applicant: Mazda Motor Corporation

Inventor： Kazuhiro Nagatsu ,  Takashi Kaminaga ,  Toru Miyamoto ,  Mingzhao Xie

IPC: F02D41/00 ,  F02B11/02 ,  F02B39/12 ,  F02B33/40

CPC classification number: F02D41/006 ,  F02B11/00 ,  F02B11/02 ,  F02B33/34 ,  F02B33/40 ,  F02B39/12 ,  F02D13/0207 ,  F02D13/0261 ,  F02D13/0265 ,  F02D41/0007 ,  F02D41/3035 ,  F02D41/402 ,  F02D2041/001 ,  F02M26/01 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/47

Abstract: A control device for a compression self-ignition combustion engine is provided, which includes a variable valve operating system configured to introduce internal exhaust gas recirculation (EGR) gas into a combustion chamber, a boosting system configured to boost intake air, a controller configured to control the valve operating system, and a sensor connected to the controller and configured to detect a parameter related to an operating state of the engine. An operation mode of the valve operating system is switchable between first and second modes. The boosting system boosts the intake air when an engine load is higher than a given load, and does not boost when lower than the given load. When the engine load is high, the controller controls the valve operating system to operate in the first mode, and when the load is low, the controller controls the valve operating system to operate in the second mode.

公开(公告)号：US09777694B2

公开(公告)日：2017-10-03

申请号：US14951924

申请日：2015-11-25

Applicant: Mazda Motor Corporation

Inventor： Takaaki Nagano ,  Masahisa Yamakawa ,  Takashi Youso ,  Kazuhiro Nagatsu ,  Atsushi Inoue ,  Kota Matsumoto ,  Takashi Kaminaga ,  Toru Miyamoto

IPC: B60T7/12 ,  F02P5/04 ,  F02D41/40 ,  F02D41/06 ,  F02D37/02 ,  F02B29/04 ,  F02M26/25 ,  F02M26/33 ,  F02M26/47 ,  F02D41/30 ,  F02D41/00 ,  F02B1/12 ,  F02B23/10 ,  F02D13/02

CPC classification number: 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

Abstract: 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.

公开(公告)号：US11220972B2

公开(公告)日：2022-01-11

申请号：US17051692

申请日：2019-04-23

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Keiji Maruyama ,  Masanari Sueoka ,  Ryohei Ono ,  Yuji Harada ,  Toru Miyamoto ,  Atsushi Inoue ,  Tatsuhiro Tokunaga ,  Takuya Ohura ,  Yusuke Kawai ,  Tomohiro Nishida ,  Keita Arai ,  Yodai Yamaguchi

IPC: F02D41/30 ,  F02D41/40 ,  F02B1/12 ,  F02B23/10 ,  F02D35/02 ,  F02D41/00

Abstract: An engine control apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. The energy of the preceding ignition is set to be higher when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.

公开(公告)号：US11187179B2

公开(公告)日：2021-11-30

申请号：US17051535

申请日：2019-04-19

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Keiji Maruyama ,  Masanari Sueoka ,  Ryohei Ono ,  Yuji Harada ,  Toru Miyamoto ,  Atsushi Inoue ,  Tatsuhiro Tokunaga ,  Takuya Ohura ,  Yusuke Kawai ,  Tomohiro Nishida ,  Keita Arai ,  Yodai Yamaguchi

IPC: F02D41/30 ,  F02D41/40 ,  F02D45/00 ,  F02D41/00

Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion. When the partial compression ignition combustion is carried out, an ignition control section of the control apparatus causes an ignition plug to carry out: main ignition in which a spark is generated to initiate the SI combustion; and preceding ignition in which the spark is generated at an earlier time point than the main ignition. An injection control section causes the ignition plug to inject fuel in an intake stroke. The ignition control section sets energy of the preceding ignition to be lower than energy of the main ignition and causes the ignition plug to carry out the preceding ignition after the fuel injection in the intake stroke or an early period or a middle period of a compression stroke.

公开(公告)号：US10934990B2

公开(公告)日：2021-03-02

申请号：US16781240

申请日：2020-02-04

Applicant: Mazda Motor Corporation

Inventor： Takuya Ohura ,  Keiji Maruyama ,  Toru Miyamoto ,  Kouji Hadama ,  Masataka Sumita ,  Takahiro Izaki ,  Shinji Takayama

IPC: F02P5/14 ,  F02D41/00 ,  F02B11/00 ,  F02D9/08 ,  F02D37/00 ,  F02D41/38 ,  F02M61/14 ,  F02P5/04

Abstract: A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.

公开(公告)号：US10927749B2

公开(公告)日：2021-02-23

申请号：US16715124

申请日：2019-12-16

Applicant: Mazda Motor Corporation

Inventor： Tatsuhiro Tokunaga ,  Masanari Sueoka ,  Keiji Maruyama ,  Tomohiro Nishida ,  Takuya Ohura ,  Toru Miyamoto ,  Junichi Taga ,  Hideki Omori ,  Kenji Tanimura ,  Hiroyuki Yabe

IPC: F02B1/12 ,  F02D37/02 ,  F02B75/12 ,  F02D41/30 ,  F02D41/40

Abstract: A control device for an engine is provided, which includes a combustion controlling module, and an ignition retard determining module configured to determine whether there is a request for an ignition retard for retarding an ignition timing of an ignition plug. When the controlling module controls the ignition plug and an injector so that the SPCCI combustion is performed and there is not the ignition retard request, the controlling module executes a control in which the entire fuel to be injected in one cycle is injected in an intake stroke and a jump-spark ignition is carried out at a basic ignition timing, and when there is the ignition retard request, the controlling module executes a control in which an injection is performed in an intake stroke, a portion of the entire fuel is injected in a compression stroke, and the ignition timing is retarded from the basic ignition timing.

公开(公告)号：US10920655B2

公开(公告)日：2021-02-16

申请号：US16775562

申请日：2020-01-29

Applicant: Mazda Motor Corporation

Inventor： Keiji Maruyama ,  Takuya Ohura ,  Masanari Sueoka ,  Tatsuhiro Tokunaga ,  Toru Miyamoto ,  Tomohiro Nishida

IPC: F02D41/40 ,  F02B11/00 ,  F02D9/08 ,  F02D37/02 ,  F02D41/00 ,  F02M61/14 ,  F02D41/38

Abstract: A control device is provided for an engine in which SPCCI combustion is carried out in which SI combustion of a portion of a mixture gas is performed by jump-spark ignition, and CI combustion of the remaining mixture gas is performed by self-ignition. When the engine is low load and a temperature is less than a given value, an early injection in which fuel is injected during an intake stroke and a retarded injection in which fuel is injected during the second half of a compression stroke are performed, and SPCCI combustion of A/F-lean mixture gas is performed. When the engine is low load and the temperature is greater than or equal to the given value, an injection amount ratio of the early injection is increased and the ratio of the retarded injection is decreased, and SPCCI combustion of A/F-lean mixture gas is performed.