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公开(公告)号：US20100175660A1
公开(公告)日：2010-07-15
申请号：US12504445
申请日：2009-07-16
申请人： Toshiaki NISHIMOTO , Tomomi WATANABE , Yoshiteru NAKAYAMA , Tatsuya FUJIKAWA , Masahisa YAMAKAWA
发明人： Toshiaki NISHIMOTO , Tomomi WATANABE , Yoshiteru NAKAYAMA , Tatsuya FUJIKAWA , Masahisa YAMAKAWA
CPC分类号： F02B23/104 , F02B2023/103 , Y02T10/125
摘要： Disclosed is a direct-injection spark-ignition engine designed to promote catalyst activation during cold engine operation. A fuel injection timing for a fuel injection period in an compression stroke (second fuel injection period F2) is set to allow a first fuel spray Ga injected from a first spray hole 40a to enter a cavity 34 in a piston crown surface 30, and allow a second fuel spray Gb to impinge against a region of the piston crown surface 30 located closer to an injector than the cavity 34, so as to cause the second fuel spray Gb having a lowered penetration force due to the impingement to be pulled toward the cavity 34 by a negative pressure generated in the cavity 34 as a result of passing of the first fuel spray Ga therethrough. The direct-injection spark-ignition engine can maximally hold an injected fuel spray around a spark plug to reliably stabilize a combustion state in a combustion mode for promoting catalyst activation during cold engine operation, while enhancing combustion efficiency in a homogenous combustion mode during normal engine operation.
摘要翻译： 公开了一种直喷式火花点火发动机，设计用于在冷发动机运行期间促进催化剂活化。 在压缩行程（第二燃料喷射期间F2）中的燃料喷射期间的燃料喷射正时被设定为允许从第一喷射孔40a喷射的第一燃料喷雾Ga进入活塞冠表面30中的空腔34，并且允许 第二燃料喷雾Gb撞击位于比腔34更靠近喷射器的活塞冠表面30的区域，以便使得由于冲击而具有降低的穿透力的第二燃料喷雾Gb被拉向空腔 34由于第一燃料喷雾Ga通过而在空腔34中产生的负压。 直喷式火花点火发动机可以最大限度地保持火花塞周围的喷射燃料喷雾，以在燃烧模式下可靠地稳定燃烧状态，以促进冷机发动机运行期间的催化剂活化，同时在正常发动机中提高均质燃烧模式下的燃烧效率 操作。
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公开(公告)号：US20090173312A1
公开(公告)日：2009-07-09
申请号：US12347705
申请日：2008-12-31
IPC分类号： F02B5/00
CPC分类号： F02B23/104 , F02B17/005 , F02B23/0675 , F02B2075/125 , Y02T10/123 , Y02T10/125
摘要： Disclosed is an internal combustion engine, which has a geometric compression ratio of 13.0 or greater, and a combustion chamber (4) configured to satisfy a condition of S/V2≦0.12 (mm−1) when a radius r of a hypothetical sphere (IS) with its center at an ignition point (CP) of a spark plug (3) is set to satisfy a condition of V2=0.15×V1, where: S (mm2) is an area of an interference surface between the hypothetical sphere (IS) and an inner wall of the combustion chamber (4) in a state when a piston (30) is at its top dead center position; V1 (mm3) is a volume of the combustion chamber 4 in the state when the piston (30) is at the top dead center position; and V2 (mm3) is a volume of a non-interference part of the hypothetical sphere (IS) which is free of interference with the inner wall of the combustion chamber (4) when the piston (30) is at the top dead center position. The internal combustion engine of the present invention can more reliably improve fuel economy.
摘要翻译： 本发明公开了一种几何压缩比为13.0以上的内燃机和构成为满足S / V2 <= 0.12（mm-1）的条件的燃烧室（4），当假想球体的半径r （IS），其中心位于火花塞（3）的点火点（CP）处以满足V2 = 0.15×V1的条件，其中：S（mm2）是假想球体 IS）和燃烧室（4）的内壁处于活塞（30）处于其上止点位置的状态; V1（mm3）是当活塞（30）处于上止点位置时的燃烧室4的容积; 而V2（mm3）是当活塞（30）处于上死点位置时，与燃烧室（4）的内壁不相干的假想球（IS）的非干涉部分的体积 。 本发明的内燃机能够更可靠地提高燃油经济性。
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公开(公告)号：US20090173307A1
公开(公告)日：2009-07-09
申请号：US12346976
申请日：2008-12-31
IPC分类号： F01L3/00
CPC分类号： F02B23/08 , F02B23/104 , Y02T10/125
摘要： Disclosed is an internal combustion engine (A), which has a valve overlap period (T) during which an intake valve (1) and an exhaust valve (2) are opened, and a geometric compression ratio of 13.0 or greater. The engine (A) is designed to satisfy, at a center timing (Tc) of the valve overlap period (T), a conditional expression: S1≧S2, where S1 is a cross-sectional area of a combustion chamber (4) taken along any selected one of a plurality of mutually parallel hypothetical cutting-planes (IP) each of which extends parallel to a linear reciprocating direction (d1 or d2) of at least one of the intake and exhaust valves (1, 2) and passes through a valve head (1a or 2a) of the at least one of the valves (1, 2), and S2 is an effective opening area defined between the valve head (1a or 2a) and a corresponding valve seat (11a or 12a) in a region on an outward side of the combustion chamber (4) relative to the selected hypothetical cutting-plane (IP). The present invention can reliably improve combusted-gas scavenging efficiency and intake-air charging efficiency.
摘要翻译： 公开了一种内燃机（A），其具有打开进气门（1）和排气阀（2）的气门重叠期（T），并且几何压缩比为13.0以上。 发动机（A）被设计成在阀重叠期间（T）的中心定时（Tc）满足条件表达式S1> = S2，其中S1是燃烧室（4）的横截面面积， 沿着平行于进气门和排气门（1,2）中的至少一个的直线往复运动方向（d1或d2）延伸并通过的多个相互平行的假想切割平面（IP）中的任何一个选择的一个， 通过阀（1,2）中的至少一个阀的阀头（1a或2a）和S2是限定在阀头（1a或2a）和对应的阀座（11a或12a）之间的有效开口面积， 在相对于所选择的假想切割平面（IP）的燃烧室（4）的外侧的区域中。 本发明可以可靠地提高燃气清除效率和进气充气效率。
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公开(公告)号：US20110067679A1
公开(公告)日：2011-03-24
申请号：US12728830
申请日：2010-03-22
IPC分类号： F02B33/00
CPC分类号： F02D41/3035 , F02D41/3041 , F02D41/402 , Y02T10/128 , Y02T10/44
摘要： Disclosed is a supercharged direct-injection engine, which comprises a supercharging device (25, 30) for compressing intake air, and an injector 10 for directly injecting fuel into a combustion chamber 5. In the engine, an excess air factor λ as a ratio of an actual air-fuel ratio to a stoichiometric air-fuel ratio, at least in an engine warmed-up mode, is set to 2 or more in the entire engine-load region. Further, compressed self-ignited combustion is performed in a low engine-load region, and a supercharging amount by the supercharging device (25, 30) is increased along with an increase in engine load in a high engine-load region to allow the excess air factor λ to be kept at 2 or more. The engine of the present invention can effectively reduce NOx emission, while improving fuel economy.
摘要翻译： 公开了一种增压直喷式发动机，其包括用于压缩进气的增压装置（25,30）和用于将燃料直接喷射到燃烧室5中的喷射器10。在发动机中，过量空气因子λ作为比率 至少在发动机预热模式下，实际的空燃比至理论空燃比在整个发动机负载区域中设定为2以上。 此外，在低发动机负载区域中执行压缩自燃燃烧，并且通过增压装置（25,30）的增压量随着高发动机负载区域中的发动机负荷的增加而增加，以允许过量 空气因子λ保持在2以上。 本发明的发动机可以有效地减少NOx排放，同时提高燃油经济性。
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公开(公告)号：US20100242899A1
公开(公告)日：2010-09-30
申请号：US12749388
申请日：2010-03-29
CPC分类号： F02D41/3035 , F02D41/402 , Y02T10/128 , Y02T10/44
摘要： Various systems and methods are disclosed for controlling an internal combustion engine system having an internal combustion engine, a fuel injector which directly injects fuel into a combustion chamber of the internal combustion engine, and a supercharger which supercharges air into the combustion chamber. One example method comprises, injecting fuel into the combustion chamber multiple times so that a first part of the fuel is self ignited and a last part of the fuel being injected during the compression stroke or later in a cylinder cycle when a desired torque of said internal combustion engine system is in a first range; and increasing a pressure of air which the supercharger charges into the combustion chamber as amount of fuel injected into the combustion chamber during a cylinder cycle increases when the desired torque is in the first range.
摘要翻译： 公开了用于控制内燃机系统的各种系统和方法，所述内燃机系统具有内燃机，将燃料直接喷射到内燃机的燃烧室中的燃料喷射器，以及将空气增压到燃烧室中的增压器。 一个示例性方法包括：将燃料多次喷射到燃烧室中，使得燃料的第一部分自燃，并且在压缩行程期间或稍后在汽缸循环中喷射燃料的最后部分，当所述内部的期望扭矩 内燃机系统处于第一范围; 并且当期望的扭矩处于第一范围时，增加在气缸循环期间喷射到燃烧室中的燃料量增加时增压器充入燃烧室的空气压力。
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6.发明申请公开(公告)号：US20090217906A1
公开(公告)日：2009-09-03
申请号：US12390107
申请日：2009-02-20
申请人： Toshiaki NISHIMOTO , Naohiro YAMAGUCHI , Masahisa YAMAKAWA , Takashi YOUSO , Kouji SHISHIME , Hiroaki ABE , Hiroki MORIMOTO , Naoya MATSUO , Naoya WATANABE
发明人： Toshiaki NISHIMOTO , Naohiro YAMAGUCHI , Masahisa YAMAKAWA , Takashi YOUSO , Kouji SHISHIME , Hiroaki ABE , Hiroki MORIMOTO , Naoya MATSUO , Naoya WATANABE
CPC分类号： F02D13/023 , F01L2820/032 , F02D41/0002 , F02D41/006 , F02D41/0065 , F02D2041/002 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要： A system and method of controlling an internal combustion engine are provided. The method may include closing said intake valve at a timing in a first range, which is before a maximum charge closing timing with which an amount of air inducted into said cylinder from said air intake passage would be maximized at a given engine speed, during a cylinder cycle when a desired amount of air to be inducted into said cylinder is less than or equal to a predetermined air amount at the given engine speed. The method may further include closing said intake valve at a timing in a second range, which is after said maximum charge closing timing and separated from said first range during a cylinder cycle, when a desired amount of air to be inducted into said cylinder is greater than said predetermined air amount at the given engine speed.
摘要翻译： 提供了一种控制内燃机的系统和方法。 该方法可以包括在第一范围内的定时关闭所述进气门，该第一范围在最大充气关闭正时之前，在最大充气关闭正时期间，在给定发动机转速期间，从所述进气通道引入所述气缸的空气量将最大化 当要被引入所述气缸的期望量的空气小于或等于在给定发动机速度下的预定空气量时，气缸循环。 该方法可以进一步包括在所述最大充气关闭正时之后的第二范围内的时刻关闭所述进气门，并且在气缸循环期间与所述第一范围分离时，当要被引入所述气缸的所需量的空气更大时 比在给定发动机转速下的所述预定空气量。
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公开(公告)号：US20100000493A1
公开(公告)日：2010-01-07
申请号：US12497314
申请日：2009-07-02
CPC分类号： F02B23/104 , F02B2075/125 , F02F3/26 , Y02T10/123 , Y02T10/125
摘要： There is provided a spark ignited internal combustion engine having a geometric compression ratio of 13.0 or greater. The engine comprises combustion chambers having a cylinder stroke volume of 0.3 liter or greater, with the spark plug in the chamber ceiling having its spark point in the combustion chamber, and a cavity being formed on the top surface of the piston. At least part of the cavity defines a spherical surface that a hypothetical sphere having its center at the spark point contacts when the piston is at top dead center. The cavity is formed so that V2/V1≧0.31, where V1 is top-dead-center combustion chamber volume, and V2 is the volume of the part of the hypothetical sphere not interfering with the combustion chamber floor or ceiling at top dead center. The flame thus spreads with less interference, shortening combustion duration and reducing fuel consumption.
摘要翻译： 提供几何压缩比为13.0以上的火花点火式内燃机。 发动机包括具有0.3升或更大的汽缸行程体积的燃烧室，其中室顶部中的火花塞在燃烧室中具有其火花点，并且在活塞的顶表面上形成空腔。 空腔的至少一部分限定了球形表面，当活塞处于上止点时，具有其在火花点处的中心的假想球接触。 空腔形成为V2 / V1> = 0.31，其中V1是上死点燃烧室体积，V2是假想球体部分的体积，不干扰上死点处的燃烧室地板或天花板 。 因此，火焰以较少的干扰扩散，缩短燃烧持续时间并降低燃料消耗。
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