公开(公告)号：US09702316B2

公开(公告)日：2017-07-11

申请号：US13972562

申请日：2013-08-21

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Junichi Taga ,  Shigeru Nakagawa ,  Saori Mizuno ,  Keiji Araki

IPC: F02D41/30 ,  F02D43/04 ,  F02D41/14 ,  F02D41/18 ,  F02D41/38 ,  F02D41/40 ,  F02D41/00

CPC classification number: F02D43/04 ,  F02D41/1446 ,  F02D41/18 ,  F02D41/3035 ,  F02D41/3041 ,  F02D41/3064 ,  F02D41/3836 ,  F02D41/401 ,  F02D2041/0067 ,  F02D2200/0406 ,  Y02T10/44 ,  Y02T10/47

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller switches between a compression-ignition mode where the engine body is operated to perform compression-ignition combustion and a spark-ignition mode where the engine body is operated to perform spark-ignition combustion. Immediately after switching from the spark-ignition mode to the compression-ignition mode, the controller operates the engine body in a compression-ignition initial mode where the fuel pressure is set to be 30 MPa or above and the fuel injection valve is controlled to perform the fuel injection in a period from a late stage of the compression stroke to an early stage of the expansion stroke so that the gas mixture self-ignites to combust.

公开(公告)号：US09145843B2

公开(公告)日：2015-09-29

申请号：US13954895

申请日：2013-07-30

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso ,  Keiji Araki

IPC: F02D41/30 ,  F02D41/34 ,  F02D41/38 ,  F02P5/15 ,  F02P5/152 ,  F02D37/02 ,  F02D41/00 ,  F02D41/04

CPC classification number: F02D41/30 ,  F02D37/02 ,  F02D41/0025 ,  F02D41/3029 ,  F02D41/3836 ,  F02D2041/389 ,  F02D2200/0611 ,  F02D2200/101 ,  F02P5/1502 ,  F02P5/152 ,  F02P5/1527 ,  Y02T10/46

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel pressure to 30 MPa or above, the fuel injection valve injects fuel between late stage of compression stroke and early stage of expansion stroke, and the ignition plug performs spark-ignition after the fuel injection completes. Within a high engine speed operating range of the high engine load range, the fuel injection valve injects fuel between intake stroke to mid-stage of compression stroke, and the ignition plug performs the spark-ignition. The ignition timing is changed according to an octane number, the changing width of the ignition timing is shorter within the low engine speed range than the high engine speed range.

Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 在预定的高发动机负载范围的低发动机转速工作范围内，燃料压力设定机构将燃料压力设定为30MPa以上，燃料喷射阀在压缩冲程的后期阶段和膨胀冲程的早期阶段之间喷射燃料， 在燃料喷射完成之后，火花塞执行火花点火。 在高发动机负载范围的高发动机转速运行范围内，燃料喷射阀将进气行程之间的燃料喷射到压缩行程的中间阶段，并且火花塞进行火花点火。 点火正时根据辛烷值改变，在低发动机转速范围内点火正时变化的宽度比发动机转速高。

公开(公告)号：US20140060489A1

公开(公告)日：2014-03-06

申请号：US13954881

申请日：2013-07-30

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso

IPC: F02D41/30

CPC classification number: F02D41/30 ,  F02B23/101 ,  F02B29/0418 ,  F02D9/04 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0273 ,  F02D41/0057 ,  F02D41/3017 ,  F02M26/01 ,  F02M26/25 ,  F02M26/47 ,  Y02T10/125 ,  Y02T10/14 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/47

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller operates the engine to perform compression-ignition combustion within a first operating range, and controls the ignition plug to operate the engine to perform spark-ignition combustion within a second operating range. Within a specific part of the first range, the controller sets the fuel pressure to 30 MPa or above, and retards the compression ignition to after a compression top dead center by controlling the injection valve to inject fuel into a cylinder in a period from a late stage of compression stroke to an early stage of expansion stroke. Below the specific part, the controller controls the fuel injection valve to inject the fuel into the cylinder in a period from intake stroke to a mid-stage of the compression stroke.

Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 控制器操作发动机以在第一操作范围内执行压燃式燃烧，并且控制火花塞以操作发动机以在第二操作范围内执行火花点火燃烧。 在第一范围的特定部分内，控制器将燃油压力设定在30MPa以上，并通过控制喷射阀将燃料喷射到气缸中，从压力上止点延迟至压缩上止点 压缩冲程的阶段到扩张中风的早期阶段。 在特定部分之下，控制器控制燃料喷射阀，以在从进气冲程到压缩冲程的中间阶段将燃料喷射到气缸中。

公开(公告)号：US09261041B2

公开(公告)日：2016-02-16

申请号：US13954881

申请日：2013-07-30

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso

IPC: F02P5/00 ,  F02D41/30 ,  F02D41/00 ,  F02B23/10 ,  F02B29/04 ,  F02M25/07 ,  F02D9/04 ,  F02D13/02

CPC classification number: F02D41/30 ,  F02B23/101 ,  F02B29/0418 ,  F02D9/04 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0273 ,  F02D41/0057 ,  F02D41/3017 ,  F02M26/01 ,  F02M26/25 ,  F02M26/47 ,  Y02T10/125 ,  Y02T10/14 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/47

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller operates the engine to perform compression-ignition combustion within a first operating range, and controls the ignition plug to operate the engine to perform spark-ignition combustion within a second operating range. Within a specific part of the first range, the controller sets the fuel pressure to 30 MPa or above, and retards the compression ignition to after a compression top dead center by controlling the injection valve to inject fuel into a cylinder in a period from a late stage of compression stroke to an early stage of expansion stroke. Below the specific part, the controller controls the fuel injection valve to inject the fuel into the cylinder in a period from intake stroke to a mid-stage of the compression stroke.

Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 控制器操作发动机以在第一操作范围内执行压燃式燃烧，并且控制火花塞以操作发动机以在第二操作范围内执行火花点火燃烧。 在第一范围的特定部分内，控制器将燃油压力设定在30MPa以上，并通过控制喷射阀将燃料喷射到气缸中，从压力上止点延迟至压缩上止点 压缩冲程的阶段到扩张中风的早期阶段。 在特定部分之下，控制器控制燃料喷射阀，以在从进气冲程到压缩冲程的中间阶段将燃料喷射到气缸中。

公开(公告)号：US20150226143A1

公开(公告)日：2015-08-13

申请号：US14426010

申请日：2013-03-27

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kouhei Iwai ,  Junichi Taga ,  Keiji Araki

IPC: F02D41/00 ,  F02D41/30 ,  F02B11/00 ,  F02D13/02

CPC classification number: F02D41/0057 ,  F02B1/12 ,  F02B11/00 ,  F02B23/101 ,  F02B29/0418 ,  F02B29/0437 ,  F02D13/0203 ,  F02D13/0207 ,  F02D13/0261 ,  F02D13/0273 ,  F02D21/08 ,  F02D35/023 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/0055 ,  F02D41/006 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/402 ,  F02D2041/001 ,  F02M26/01 ,  F02M26/25 ,  F02M26/28 ,  Y02T10/125 ,  Y02T10/128 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/47

Abstract: A controller performs switching between a compression ignition mode in which compression ignition combustion is performed to operate an engine body, and a spark ignition mode in which spark ignition combustion is performed to drive a spark plug to ignite and combust an air-fuel mixture in a cylinder. The controller reduces an EGR ratio to be lower than an EGR ratio set in the compression ignition mode to operate the engine body in a transitional mode in which the compression ignition combustion is performed in switching from the spark ignition mode to the compression ignition mode.

Abstract translation: 控制器执行在执行压缩点火燃烧以操作发动机主体的压缩点火模式和进行火花点火燃烧以驱动火花塞以点燃和燃烧空气燃料混合物的火花点火模式之间的切换 圆筒。 控制器将EGR率降低到低于在压缩点火模式中设定的EGR率，以在以从火花点火模式切换到压缩点火模式进行压缩点火燃烧的过渡模式来操作发动机主体。

公开(公告)号：US20140074378A1

公开(公告)日：2014-03-13

申请号：US13972606

申请日：2013-08-21

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Junichi Taga

IPC: F02D43/04

CPC classification number: F02D43/04 ,  F02D41/006 ,  F02D41/123 ,  F02D41/126 ,  F02D41/3035 ,  F02D41/401 ,  F02D2041/001 ,  F02D2250/31 ,  Y02T10/44 ,  Y02T10/47

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body having a cylinder, intake and exhaust valves for opening and closing intake and exhaust ports that open to the cylinder, respectively, a fuel injection valve for injecting fuel into the cylinder, a catalyst in an exhaust passage, and a controller for operating the engine body by controlling the intake and exhaust valves and the fuel injection valve. The controller performs a fuel cut by suspending the fuel injection during engine deceleration in a non-operated accelerator state, and when the engine speed drops to a predetermined speed, the controller resumes the fuel injection. During the fuel cut, the controller opens the exhaust valve on an intake stroke and then opens the intake valve, and after closing the exhaust valve and when mixture gas is blown back to the intake port, the controller closes the intake valve.

Abstract translation: 提供火花点火直喷发动机。 发动机包括具有气缸的发动机主体，用于打开和关闭对气缸开放的进气和排气口的进气和排气阀，用于将燃料喷射到气缸中的燃料喷射阀，排气通道中的催化剂和 控制器，用于通过控制进气门和排气门和燃料喷射阀来操作发动机体。 控制器通过在发动机减速期间将燃料喷射暂停在非操作的加速器状态来执行燃料切断，并且当发动机转速下降到预定速度时，控制器恢复燃料喷射。 在燃油切断期间，控制器在进气行程中打开排气阀，然后打开进气门，并且在关闭排气阀之后，当混合气体被吹回到进气口时，控制器关闭进气门。

公开(公告)号：US20150114342A1

公开(公告)日：2015-04-30

申请号：US14395902

申请日：2013-08-26

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso ,  Keiji Araki

IPC: F02B11/02 ,  F02D37/02

CPC classification number: F02B11/02 ,  F02B23/101 ,  F02B29/0418 ,  F02D13/0207 ,  F02D13/0261 ,  F02D21/08 ,  F02D37/02 ,  F02D41/0057 ,  F02D41/3017 ,  F02D41/3023 ,  F02D41/3035 ,  F02D41/401 ,  F02D41/402 ,  F02D2041/3052 ,  F02M26/25 ,  F02M26/33 ,  F02P5/1516 ,  F02P15/08 ,  Y02T10/125 ,  Y02T10/128 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/46 ,  Y02T10/47

Abstract: A controller injects fuel into a cylinder at a high fuel pressure of 30 MPa or higher, at least in a period between a terminal stage of a compression stroke and an initial stage of an expansion stroke when an operating mode of an engine body is at least in a first specified sub-range of a low load range, and at least in a second specified sub-range of a high load range. The controller sets an EGR ratio in the first specified sub-range to be higher than an EGR ratio in the second specified sub-range, and advances start of fuel injection in the first specified sub-range to start of fuel injection in the second specified sub-range.

Abstract translation: 至少在压缩行程的终端阶段和膨胀冲程的初始阶段之间的时间段内，控制器在30MPa或更高的高燃料压力下将燃料喷射到汽缸中，当发动机机体的运行模式至少为 在低负载范围的第一指定子范围内，以及至少在高负载范围的第二指定子范围内。 控制器将第一指定子范围内的EGR率设定为高于第二规定子范围内的EGR率，并且将第一指定子范围内的燃料喷射开始提前到第二指定子范围内的燃料喷射开始 子范围

公开(公告)号：US20140069382A1

公开(公告)日：2014-03-13

申请号：US13972562

申请日：2013-08-21

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Junichi Taga ,  Shigeru Nakagawa ,  Saori Mizuno ,  Keiji Araki

IPC: F02D43/04

CPC classification number: F02D43/04 ,  F02D41/1446 ,  F02D41/18 ,  F02D41/3035 ,  F02D41/3041 ,  F02D41/3064 ,  F02D41/3836 ,  F02D41/401 ,  F02D2041/0067 ,  F02D2200/0406 ,  Y02T10/44 ,  Y02T10/47

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller switches between a compression-ignition mode where the engine body is operated to perform compression-ignition combustion and a spark-ignition mode where the engine body is operated to perform spark-ignition combustion. Immediately after switching from the spark-ignition mode to the compression-ignition mode, the controller operates the engine body in a compression-ignition initial mode where the fuel pressure is set to be 30 MPa or above and the fuel injection valve is controlled to perform the fuel injection in a period from a late stage of the compression stroke to an early stage of the expansion stroke so that the gas mixture self-ignites to combust.

Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 控制器在发动机主体进行压燃式燃烧的压燃式模式和发动机主体运转的火花点火模式之间进行切换，进行火花点火燃烧。 在从火花点火模式切换到压缩点火模式之后，控制器在燃料压力设定为30MPa以上并且燃料喷射阀被控制为执行的压缩点火初始模式下操作发动机主体 在从压缩冲程的后期到膨胀冲程的早期阶段的燃料喷射，使得气体混合物自燃燃烧。

公开(公告)号：US20140060493A1

公开(公告)日：2014-03-06

申请号：US13971769

申请日：2013-08-20

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Hiroyuki Kurita

IPC: F02D41/30

CPC classification number: F02D41/30 ,  F02B23/101 ,  F02B29/0418 ,  F02B29/0437 ,  F02B2023/102 ,  F02B2023/103 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0265 ,  F02D13/0273 ,  F02D37/02 ,  F02D41/0057 ,  F02D41/3029 ,  F02M26/01 ,  F02M26/25 ,  F02M26/28 ,  F02M26/33 ,  F02M26/47 ,  F02P5/1516 ,  F02P5/1527 ,  Y02T10/125 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/46 ,  Y02T10/47

Abstract: A spark-ignition engine is provided. The engine includes an engine body, a fuel injection valve, an ignition plug, an EGR introduction system, and a controller for operating the engine body by controlling the fuel injection valve, the ignition plug, and the EGR introduction system. The controller controls to combust mixture gas by compressing to self-ignite within a compression self-ignition combustion applying range, and to combust the mixture gas by a spark-ignition using the ignition plug within a spark-ignition combustion applying range. Substantially throughout the spark-ignition combustion applying range, the controller controls the EGR introduction system to introduce cooled EGR gas, and within the compression self-ignition applying range, the controller controls the EGR introduction system to introduce hot EGR gas. The controller controls the EGR introduction system to introduce the hot EGR gas and the cooled EGR gas within a low engine load part of the spark-ignition combustion applying range.

Abstract translation: 提供火花点火发动机。 发动机包括发动机主体，燃料喷射阀，火花塞，EGR引入系统以及通过控制燃料喷射阀，火花塞和EGR引入系统来操作发动机主体的控制器。 控制器通过在压缩自点火燃烧施加范围内压缩自燃以混合气体燃烧，并通过使用火花塞在火花点火燃烧施加范围内通过火花点火来燃烧混合气体。 在整个火花点火燃烧施加范围内，控制器控制EGR引入系统以引入冷却的EGR气体，并且在压缩自点火施加范围内，控制器控制EGR引入系统引入热EGR气体。 该控制器控制EGR引入系统，以在火花点火燃烧施加范围的低发动机负载部分内引入热EGR气体和冷却的EGR气体。

公开(公告)号：US20140060490A1

公开(公告)日：2014-03-06

申请号：US13954895

申请日：2013-07-30

Applicant: Mazda Motor Corporation

Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso ,  Keiji Araki

IPC: F02D41/30

CPC classification number: F02D41/30 ,  F02D37/02 ,  F02D41/0025 ,  F02D41/3029 ,  F02D41/3836 ,  F02D2041/389 ,  F02D2200/0611 ,  F02D2200/101 ,  F02P5/1502 ,  F02P5/152 ,  F02P5/1527 ,  Y02T10/46

Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel pressure to 30 MPa or above, the fuel injection valve injects fuel between late stage of compression stroke and early stage of expansion stroke, and the ignition plug performs spark-ignition after the fuel injection completes. Within a high engine speed operating range of the high engine load range, the fuel injection valve injects fuel between intake stroke to mid-stage of compression stroke, and the ignition plug performs the spark-ignition. The ignition timing is changed according to an octane number, the changing width of the ignition timing is shorter within the low engine speed range than the high engine speed range.

Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 在预定的高发动机负载范围的低发动机转速工作范围内，燃料压力设定机构将燃料压力设定为30MPa以上，燃料喷射阀在压缩冲程的后期阶段和膨胀冲程的早期阶段之间喷射燃料， 在燃料喷射完成之后，火花塞执行火花点火。 在高发动机负载范围的高发动机转速运行范围内，燃料喷射阀将进气行程之间的燃料喷射到压缩行程的中间阶段，并且火花塞进行火花点火。 点火正时根据辛烷值变化，在低发动机转速范围内点火正时的变化宽度比高发动机转速范围短。