公开(公告)号：US06672277B2

公开(公告)日：2004-01-06

申请号：US09995972

申请日：2001-11-29

Applicant: Takehiko Yasuoka ,  Noriyuki Ohta ,  Hiroyuki Yamashita ,  Masatoshi Seto ,  Masakazu Matsumoto ,  Fumihiko Saito ,  Keiji Araki

Inventor： Takehiko Yasuoka ,  Noriyuki Ohta ,  Hiroyuki Yamashita ,  Masatoshi Seto ,  Masakazu Matsumoto ,  Fumihiko Saito ,  Keiji Araki

IPC: F02B5704

CPC classification number: F02D13/0261 ,  F02B17/005 ,  F02B23/104 ,  F02B31/085 ,  F02B2023/106 ,  F02B2075/125 ,  F02B2275/48 ,  F02D13/0219 ,  F02D13/0249 ,  F02D41/3023 ,  F02D41/401 ,  F02D2041/389 ,  F02F1/4214 ,  F02F2001/245 ,  F02P5/045 ,  Y02T10/12 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/44

Abstract: During stratified-charge combustion operation of a direct-injection spark ignition engine, at the cylinder compression stroke, a tumble is generated which flows between a spark plug electrode and a piston crown surface toward an injector. A fuel is injected from the injector in correspondence with the cylinder ignition timing by controlling the penetration of fuel spray from the injector to correspond to the tumble flow rate so that the fuel spray may go against the tumble, become a flammable mixture at the cylinder ignition timing and stay near the spark plug electrode. In the late stage of the compression stroke, diffusion of the flammable mixture is suppressed with squishes. Thus, fuel spray behavior in the combustion chamber is controlled to allow suitable mixture stratification over a wide engine operating condition range. This improves combustion quality and extends a stratified-charge combustion zone thereby providing enhanced fuel economy and power output.

Abstract translation: 在直喷式火花点火发动机的分层充气燃烧操作期间，在气缸压缩冲程中，产生在火花塞电极和活塞冠表面之间朝向喷射器流动的翻转。 通过控制来自喷射器的燃料喷雾的渗透度来对应于滚筒流量，燃料通过喷射器与气缸点火正时相对应地喷射，使得燃料喷雾可以抵抗滚筒，在气缸点火时成为可燃混合物 定时并靠近火花塞电极。 在压缩冲程的后期阶段，可燃混合物的扩散受到挤压的抑制。 因此，控制燃烧室中的燃料喷射性能以允许在宽的发动机工作状态范围内进行合适的混合分层。 这提高了燃烧质量并延长了分层充气燃烧区域，从而提供了增强的燃料经济性和功率输出。

公开(公告)号：US08417437B2

公开(公告)日：2013-04-09

申请号：US12774481

申请日：2010-05-05

Applicant: Hiroyuki Yamashita ,  Masatoshi Seto ,  Yusuke Kawai

Inventor： Hiroyuki Yamashita ,  Masatoshi Seto ,  Yusuke Kawai

IPC: B60T7/12

CPC classification number: F02D41/3035 ,  F02D13/0207 ,  F02D13/0265 ,  F02D41/402 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/44

Abstract: When it is determined that an engine operating condition is in a high-engine load HCCI range (A2) where an engine load is higher than a specified load X1 within a HCCI range A where a compression self combustion is performed, an after-TDC injection F2s is executed at a point T1 when an internal pressure of a combustion chamber drops below a specified pressure Y after the top dead center of an exhaust stroke during a minus valve overlap period NVO during which intake and exhaust valves are both closed. Then, a main injection F2m as a main injection is executed. Accordingly, any improper detonation or deterioration of NOx emission which may be caused by the compression self-ignition combustion in the range where the engine load is relatively high can be prevented.

Abstract translation: 当确定发动机工作状态处于发动机负荷高于执行压缩自燃的HCCI范围A内的指定负载X1的高发动机负荷HCCI范围（A2）时，TDC后的注入 当在排气门关闭的负阀重叠期间NVO期间，当燃烧室的内部压力下降到排气行程的上止点之后的指定压力Y以下时，在点T1执行F2。 然后，执行作为主喷射的主喷射F2m。 因此，可以防止在发动机负荷相对较高的范围内由压缩自点火燃烧引起的任何不适当的爆炸或NOx排放的恶化。

公开(公告)号：US07992538B2

公开(公告)日：2011-08-09

申请号：US12240771

申请日：2008-09-29

Applicant: Hiroyuki Yamashita ,  Takeo Yamauchi ,  Masatoshi Seto

Inventor： Hiroyuki Yamashita ,  Takeo Yamauchi ,  Masatoshi Seto

IPC: F02B3/00 ,  F02B5/00

CPC classification number: F01L1/08 ,  F01L1/14 ,  F01L1/34 ,  F01L13/0005 ,  F01L13/0031 ,  F01L2001/0537 ,  F01L2800/00 ,  F01L2820/042 ,  F02D41/006 ,  F02D41/3041 ,  F02D41/402 ,  F02D41/403 ,  F02D2041/001 ,  F02M43/00 ,  F02M45/00 ,  Y02T10/44 ,  Y02T10/47

Abstract: A method of controlling an internal combustion engine and system including the engine is provided. The method may include closing an exhaust valve of a combustion chamber of said engine during a cylinder cycle prior to opening an intake valve of said combustion chamber. The method may include, when a desired engine torque is a predetermined torque or greater, supplying a first pilot fuel into said combustion chamber after said exhaust valve closing and supplying a first main fuel into said combustion chamber after the combustion of said first preliminary fuel during the cylinder cycle. The method may include, when a desired engine torque is less than said predetermined torque, supplying a second pilot fuel into said combustion chamber after said exhaust valve closing during the cylinder cycle and supplying a second main fuel into said combustion chamber after the supplying of said second pilot fuel into said combustion chamber.

Abstract translation: 提供了一种控制包括发动机的内燃机和系统的方法。 该方法可以包括在打开所述燃烧室的进气阀之前在汽缸循环期间关闭所述发动机的燃烧室的排气阀。 该方法可以包括当期望的发动机扭矩是预定扭矩或更大时，在所述排气门关闭之后将第一引燃燃料供应到所述燃烧室中，并且在所述第一预备燃料燃烧之后将第一主燃料供应到所述燃烧室中 气缸循环。 该方法可以包括：当期望的发动机扭矩小于所述预定扭矩时，在所述气缸循环之后的所述排气门关闭之后将第二引燃燃料供应到所述燃烧室中，并且在所述燃料室供应所述第二主燃料之后， 第二引燃燃料进入所述燃烧室。

公开(公告)号：US06684848B2

公开(公告)日：2004-02-03

申请号：US10106843

申请日：2002-03-27

Applicant: Fumihiko Saito ,  Noriyuki Ohta ,  Hiroyuki Yamashita ,  Masashi Marubara ,  Masatoshi Seto ,  Hiroyuki Yoshida ,  Takehiko Yasuoka ,  Masakazu Matsumoto

Inventor： Fumihiko Saito ,  Noriyuki Ohta ,  Hiroyuki Yamashita ,  Masashi Marubara ,  Masatoshi Seto ,  Hiroyuki Yoshida ,  Takehiko Yasuoka ,  Masakazu Matsumoto

IPC: F02B1700

CPC classification number: F02B17/005 ,  F02B23/104 ,  F02B31/085 ,  F02B2023/106 ,  F02B2075/125 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

Abstract: A fuel spray and a tumble collide with each other from approximately opposite directions in a cavity formed in a piston head so that a combustible mixture stays around a spark plug for an extended period of time. An upper opening of the cavity is elongated to both the left and right sides of a cylinder axis. The distance between a ceiling of the combustion chamber and a bottom surface of the cavity is smaller on the right side of the cylinder axis than on the left side thereof and largest at least at a point where the cylinder axis crosses the bottom surface of the cavity, and a portion of the cavity to the left of the cylinder axis has a larger volumetric capacity than a portion of the cavity to the right of the cylinder axis, whereby a strong tumble is maintained up to a fuel injection point.

Abstract translation: 燃料喷雾和滚筒在形成于活塞头中的空腔中从大致相反的方向相互碰撞，使得可燃混合物长时间停留在火花塞周围。 空腔的上部开口沿圆柱体轴线的左侧和右侧伸长。 燃烧室的天花板和空腔的底面之间的距离在气缸轴线的右侧比在其左侧更小，并且至少在气缸轴线穿过腔体的底表面的点处最大 ，并且气缸轴线左侧的空腔的一部分具有比气缸轴线右侧的腔的一部分更大的体积容积，由此强烈的翻滚被保持到燃料喷射点。

公开(公告)号：US20140216396A1

公开(公告)日：2014-08-07

申请号：US14343381

申请日：2012-08-28

Applicant: Hiroyuki Yamashita ,  Kazuaki Narahara ,  Tatsuya Tanaka ,  Yoshitomo Takahashi ,  Yusuke Nakao ,  Takashi Ikai ,  Hidefumi Fujimoto ,  Masatoshi Seto ,  Yoshio Tanita ,  Kazuo Ichikawa ,  Shingo Kai ,  Susumu Masuyama ,  Hirokazu Nakahashi ,  Keiji Araki

Inventor： Hiroyuki Yamashita ,  Kazuaki Narahara ,  Tatsuya Tanaka ,  Yoshitomo Takahashi ,  Yusuke Nakao ,  Takashi Ikai ,  Hidefumi Fujimoto ,  Masatoshi Seto ,  Yoshio Tanita ,  Kazuo Ichikawa ,  Shingo Kai ,  Susumu Masuyama ,  Hirokazu Nakahashi ,  Keiji Araki

IPC: F02B17/00

CPC classification number: F02B17/005 ,  F01L1/34 ,  F01L3/04 ,  F01L13/0015 ,  F01L2101/00 ,  F01L2101/02 ,  F02B11/00 ,  F02D41/3035 ,  F02D41/401 ,  F02D41/403 ,  F02D2200/025 ,  F02F3/12 ,  F02P5/153 ,  F02P23/04 ,  Y02T10/44 ,  Y02T10/46

Abstract: A direct injection engine includes an ignition assistance section applying energy to fuel injected into a cylinder using an injector to assist auto-ignition combustion of the fuel when the engine is within an auto-ignition combustion operation range. A start time of fuel injection is set within a period from a terminal stage of a compression stroke to a compression top dead center. The energy is applied to the fuel injected into the cylinder in a period from start of the fuel injection to an initial stage of an expansion stroke such that a time of a specific crank angle when an increase rate of in-cylinder pressure, which is a ratio of a change in the in-cylinder pressure to a change in a crank angle in motoring the engine, reaches a negative maximum value overlaps a combustion period when a combustion mass percentage of the fuel ranges from 10% to 90%.

Abstract translation: 直接喷射发动机包括点火辅助部分，当发动机处于自燃点燃燃烧操作范围内时，使用喷射器将能量喷射到喷射到气缸中的燃料中，以辅助燃料的自燃。 在从压缩冲程的终端到压缩上止点的期间内设定燃料喷射的开始时间。 在从燃料喷射开始到膨胀冲程的初始阶段的期间，将能量施加到喷射到气缸中的燃料，使得当缸内压力的增加率（即 当燃料的燃烧质量百分比为10％至90％时，缸内压力变化与发动机起动时曲柄角变化的比率达到负最大值与燃烧时间重叠。

公开(公告)号：US07347181B2

公开(公告)日：2008-03-25

申请号：US11536013

申请日：2006-09-28

Applicant: Hiroyuki Yamashita ,  Masatoshi Seto ,  Hiroyuki Yoshida

Inventor： Hiroyuki Yamashita ,  Masatoshi Seto ,  Hiroyuki Yoshida

IPC: F02B23/10 ,  F02B17/00

CPC classification number: F02B17/005 ,  F02B23/104 ,  F02B23/105 ,  F02B31/00 ,  F02B2023/103 ,  F02B2023/106 ,  F02D41/3029 ,  F02D41/402 ,  Y02T10/125 ,  Y02T10/146 ,  Y02T10/44

Abstract: A direct injection spark ignition engine comprises a cylinder, a piston, a fuel injector arranged at one side of a center axis of the cylinder for directly injecting fuel into the combustion chamber, and a smoothly continuous lowered recess formed on a top surface of the piston surface. The recess has a first cross section along a first plane including the cylinder center axis and a nozzle end of the injector. The first and second lower contours are smoothly connected with each other through a lowest point of the first cross section. The first lower contour is located at the one side of the cylinder center axis. The second lower contour is at the other side. The first contour has a larger radius than a radius of the second contour. Accordingly, the fuel spray having greater movement energy may impinge the recess at a regulated impinging angle.

Abstract translation: 直喷式火花点火发动机包括：气缸，活塞，布置在气缸中心轴线一侧的燃料喷射器，用于将燃料直接喷入燃烧室;以及平滑连续的下降凹部，其形成在活塞的顶表面上 表面。 该凹部沿着包括气缸中心轴线和喷射器的喷嘴端的第一平面具有第一横截面。 第一和第二下轮廓通过第一横截面的最低点彼此平滑地连接。 第一个下轮廓位于气缸中心轴的一侧。 第二个下部轮廓位于另一侧。 第一轮廓的半径大于第二轮廓的半径。 因此，具有较大移动能量的燃料喷雾可以以稳定的碰撞角度撞击凹部。

公开(公告)号：US09488094B2

公开(公告)日：2016-11-08

申请号：US14343381

申请日：2012-08-28

Applicant: Hiroyuki Yamashita ,  Kazuaki Narahara ,  Tatsuya Tanaka ,  Yoshitomo Takahashi ,  Yusuke Nakao ,  Takashi Ikai ,  Hidefumi Fujimoto ,  Masatoshi Seto ,  Yoshio Tanita ,  Kazuo Ichikawa ,  Shingo Kai ,  Susumu Masuyama ,  Hirokazu Nakahashi ,  Keiji Araki

Inventor： Hiroyuki Yamashita ,  Kazuaki Narahara ,  Tatsuya Tanaka ,  Yoshitomo Takahashi ,  Yusuke Nakao ,  Takashi Ikai ,  Hidefumi Fujimoto ,  Masatoshi Seto ,  Yoshio Tanita ,  Kazuo Ichikawa ,  Shingo Kai ,  Susumu Masuyama ,  Hirokazu Nakahashi ,  Keiji Araki

IPC: F02P5/00 ,  F02B17/00 ,  F02B11/00 ,  F02F3/12 ,  F02D41/40 ,  F01L3/04 ,  F02P5/153 ,  F01L1/34 ,  F01L13/00 ,  F02D41/30 ,  F02P23/04

CPC classification number: F02B17/005 ,  F01L1/34 ,  F01L3/04 ,  F01L13/0015 ,  F01L2101/00 ,  F01L2101/02 ,  F02B11/00 ,  F02D41/3035 ,  F02D41/401 ,  F02D41/403 ,  F02D2200/025 ,  F02F3/12 ,  F02P5/153 ,  F02P23/04 ,  Y02T10/44 ,  Y02T10/46

Abstract: A direct injection engine includes an ignition assistance section applying energy to fuel injected into a cylinder using an injector to assist auto-ignition combustion of the fuel when the engine is within an auto-ignition combustion operation range. A start time of fuel injection is set within a period from a terminal stage of a compression stroke to a compression top dead center. The energy is applied to the fuel injected into the cylinder in a period from start of the fuel injection to an initial stage of an expansion stroke such that a time of a specific crank angle when an increase rate of in-cylinder pressure, which is a ratio of a change in the in-cylinder pressure to a change in a crank angle in motoring the engine, reaches a negative maximum value overlaps a combustion period when a combustion mass percentage of the fuel ranges from 10% to 90%.

Abstract translation: 直接喷射发动机包括点火辅助部分，当发动机处于自燃点燃燃烧操作范围内时，使用喷射器将能量喷射到喷射到气缸中的燃料中，以辅助燃料的自燃。 在从压缩冲程的终端到压缩上止点的期间内设定燃料喷射的开始时间。 在从燃料喷射开始到膨胀冲程的初始阶段的期间，将能量施加到喷射到气缸中的燃料，使得当缸内压力的增加率（即 当燃料的燃烧质量百分比为10％至90％时，缸内压力变化与发动机起动时曲柄角变化的比率达到负最大值与燃烧时间重叠。

公开(公告)号：US20100312455A1

公开(公告)日：2010-12-09

申请号：US12774481

申请日：2010-05-05

Applicant: Hiroyuki YAMASHITA ,  Masatoshi SETO ,  Yusuke KAWAI

Inventor： Hiroyuki YAMASHITA ,  Masatoshi SETO ,  Yusuke KAWAI

IPC: F02D41/30 ,  F02B3/12 ,  F02B17/00

CPC classification number: F02D41/3035 ,  F02D13/0207 ,  F02D13/0265 ,  F02D41/402 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/44

Abstract: When it is determined that an engine operating condition is in a high-engine load HCCI range (A2) where an engine load is higher than a specified load X1 within a HCCI range A where a compression self combustion is performed, an after-TDC injection F2s is executed at a point T1 when an internal pressure of a combustion chamber drops below a specified pressure Y after the top dead center of an exhaust stroke during a minus valve overlap period NVO during which intake and exhaust valves are both closed. Then, a main injection F2m as a main injection is executed. Accordingly, any improper detonation or deterioration of NOx emission which may be caused by the compression self-ignition combustion in the range where the engine load is relatively high can be prevented.

Abstract translation: 当确定发动机工作状态处于发动机负荷高于执行压缩自燃的HCCI范围A内的指定负载X1的高发动机负荷HCCI范围（A2）时，TDC后的注入 当在排气门关闭的负阀重叠期间NVO期间，当燃烧室的内部压力下降到排气行程的上止点之后的指定压力Y以下时，在点T1执行F2。 然后，执行作为主喷射的主喷射F2m。 因此，可以防止在发动机负荷相对较高的范围内由压缩自点火燃烧引起的任何不适当的爆炸或NOx排放的恶化。

公开(公告)号：US20090093946A1

公开(公告)日：2009-04-09

申请号：US12240771

申请日：2008-09-29

Applicant: Hiroyuki Yamashita ,  Takeo Yamauchi ,  Masatoshi Seto

Inventor： Hiroyuki Yamashita ,  Takeo Yamauchi ,  Masatoshi Seto

IPC: F02D41/30 ,  F02M43/00 ,  F01L1/34

CPC classification number: F01L1/08 ,  F01L1/14 ,  F01L1/34 ,  F01L13/0005 ,  F01L13/0031 ,  F01L2001/0537 ,  F01L2800/00 ,  F01L2820/042 ,  F02D41/006 ,  F02D41/3041 ,  F02D41/402 ,  F02D41/403 ,  F02D2041/001 ,  F02M43/00 ,  F02M45/00 ,  Y02T10/44 ,  Y02T10/47

Abstract: A method of controlling an internal combustion engine and system including the engine is provided. The method may include closing an exhaust valve of a combustion chamber of said engine during a cylinder cycle prior to opening an intake valve of said combustion chamber. The method may include, when a desired engine torque is a predetermined torque or greater, supplying a first pilot fuel into said combustion chamber after said exhaust valve closing and supplying a first main fuel into said combustion chamber after the combustion of said first preliminary fuel during the cylinder cycle. The method may include, when a desired engine torque is less than said predetermined torque, supplying a second pilot fuel into said combustion chamber after said exhaust valve closing during the cylinder cycle and supplying a second main fuel into said combustion chamber after the supplying of said second pilot fuel into said combustion chamber.

Abstract translation: 提供了一种控制包括发动机的内燃机和系统的方法。 该方法可以包括在打开所述燃烧室的进气阀之前在汽缸循环期间关闭所述发动机的燃烧室的排气阀。 该方法可以包括当期望的发动机扭矩是预定扭矩或更大时，在所述排气门关闭之后将第一引燃燃料供应到所述燃烧室中，并且在所述第一预备燃料燃烧之后将第一主燃料供应到所述燃烧室中 气缸循环。 该方法可以包括：当期望的发动机扭矩小于所述预定扭矩时，在所述气缸循环之后的所述排气门关闭之后将第二引燃燃料供应到所述燃烧室中，并且在所述燃料室供应所述第二主燃料之后， 第二引燃燃料进入所述燃烧室。

公开(公告)号：US20070068482A1

公开(公告)日：2007-03-29

申请号：US11536013

申请日：2006-09-28

Applicant: Hiroyuki Yamashita ,  Masatoshi Seto ,  Hiroyuki Yoshida

Inventor： Hiroyuki Yamashita ,  Masatoshi Seto ,  Hiroyuki Yoshida

IPC: F02F3/26 ,  F02B3/00

CPC classification number: F02B17/005 ,  F02B23/104 ,  F02B23/105 ,  F02B31/00 ,  F02B2023/103 ,  F02B2023/106 ,  F02D41/3029 ,  F02D41/402 ,  Y02T10/125 ,  Y02T10/146 ,  Y02T10/44

Abstract: A direct injection spark ignition engine comprises a cylinder, a piston which is reciprocally movably arranged in the cylinder and defines with the cylinder a combustion chamber, a fuel injector arranged at one side of a center axis of the cylinder for directly injecting fuel into the combustion chamber, and a smoothly continuous lowered recess formed on a top surface of the piston surface for receiving at least part of fuel injected from the injector. The recess has a first cross section along a first plane including the cylinder center axis and a nozzle end of the injector. The first cross section has first and second lower contours substantially of arc shape with its center above the recess. The first and second lower contours are smoothly connected with each other through a lowest point of the first cross section. The first lower contour is located at the one side of the cylinder center axis. The second lower contour is located at the other side of the cylinder center axis. The first contour has a larger radius than a radius of the second contour. Accordingly, the fuel spray having greater movement energy may impinge the recess at a regulated impinging angle. Consequently, this configuration may properly guide the fuel spray, prevent the wet fuel spot anywhere within the combustion chamber, and create properly stratified air fuel mixture.

Abstract translation: 直喷式火花点火发动机包括气缸，活塞，其可往复运动地布置在气缸中并与气缸一起限定燃烧室，燃料喷射器布置在气缸的中心轴线的一侧，用于将燃料直接喷射到燃烧 以及形成在活塞表面的顶表面上的平滑连续的下降凹部，用于接收从喷射器喷射的燃料的至少一部分。 该凹部沿着包括气缸中心轴线和喷射器的喷嘴端的第一平面具有第一横截面。 第一横截面具有基本上具有圆弧形状的第一和第二下部轮廓，其中心在凹部上方。 第一和第二下轮廓通过第一横截面的最低点彼此平滑地连接。 第一个下轮廓位于气缸中心轴的一侧。 第二个下轮廓位于气缸中心轴的另一侧。 第一轮廓的半径大于第二轮廓的半径。 因此，具有较大移动能量的燃料喷雾可以以稳定的碰撞角度撞击凹部。 因此，这种构造可以适当地引导燃料喷雾，防止燃烧室内任何地方的湿燃料点，并且产生适当分层的空气燃料混合物。