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公开(公告)号：US20100250103A1
公开(公告)日：2010-09-30
申请号：US12732107
申请日：2010-03-25
申请人： Daisuke Shimo , Motoshi Kataoka , Yoshihisa Nakamoto , Tatsuya Tanaka , Kota Maekawa , Hideya Horii , Takashi Hatano
发明人： Daisuke Shimo , Motoshi Kataoka , Yoshihisa Nakamoto , Tatsuya Tanaka , Kota Maekawa , Hideya Horii , Takashi Hatano
CPC分类号： F02D41/0065 , F02D41/0007 , F02D41/123 , F02D2041/001 , F02M26/05 , F02M26/06 , F02M26/23 , Y02T10/47
摘要： An exemplary method of controlling an internal combustion engine system is described herein. The internal combustion engine system includes an internal combustion engine, a valve driving mechanism which reciprocally drives an intake valve and an exhaust valve for a combustion chamber of the internal combustion engine, a turbocharger including a turbine and a compressor, and a first EGR passage which communicates an exhaust passage downstream of the emission control device and an intake passage upstream of the compressor. The exemplary method includes shutting off supplying fuel to the combustion chamber under a predetermined condition, and decreasing a lift of the intake or exhaust valve for the combustion chamber during the shutting off supplying fuel to the combustion chamber compared to in a case of supplying fuel to said combustion chamber.
摘要翻译： 本文描述了一种控制内燃机系统的示例性方法。 内燃机系统包括内燃机，往复驱动内燃机的燃烧室的进气门和排气门的阀驱动机构，包括涡轮机和压缩机的涡轮增压器和第一EGR通路， 在排放控制装置下游的排气通路和压缩机上游的进气通路连通。 示例性方法包括在预定条件下关闭向燃烧室供应燃料，以及在向燃烧室供应燃料期间减少用于燃烧室的进气门或排气门的升程，与将燃料供应到燃料的情况相比 所述燃烧室。
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公开(公告)号：US07895986B2
公开(公告)日：2011-03-01
申请号：US12190463
申请日：2008-08-12
IPC分类号： F02B23/02
CPC分类号： F02M61/1806 , F02M45/086
摘要： A fuel injection nozzle for a diesel engine. The fuel injection nozzle may include a plurality of injection hole groups, each having two injection holes respectively. A distance between the two injection holes, an angle between longitudinal axes of the two injection holes and an angle between horizontal axes of said two injection holes of each injection hole group are each set such that fuel sprays injected from said two injection holes will form a single fuel spray cloud after the fuel sprays collide with a side wall of a combustion chamber formed in a top surface of a piston of the engine, and such that the distance between collision points of the fuel sprays will be in a predetermined range in which a penetration force of said fuel spray cloud along a longitudinal direction of said combustion chamber received after collision with said wall of said combustion chamber is at or near a predetermined maximum value.
摘要翻译： 一种用于柴油发动机的燃油喷嘴。 燃料喷射喷嘴可以包括分别具有两个喷射孔的多个喷射孔组。 两个喷射孔之间的距离，两个喷射孔的纵轴之间的角度和每个喷射孔组的所述两个喷射孔的水平轴线之间的角度分别被设定为使得从所述两个喷射孔注入的燃料喷射将形成 燃料喷雾与形成在发动机的活塞的顶面中的燃烧室的侧壁碰撞的单燃料喷雾云，并且燃料喷射的碰撞点之间的距离将处于预定范围内，其中 所述燃料喷雾云沿与所述燃烧室的所述壁碰撞之后接收的所述燃烧室的纵向方向的穿透力处于或接近预定的最大值。
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公开(公告)号：US07426922B2
公开(公告)日：2008-09-23
申请号：US11802417
申请日：2007-05-22
IPC分类号： F02M25/07
CPC分类号： F02D41/005 , F02B29/0406 , F02D41/403 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , F02M26/38 , Y02T10/44 , Y02T10/47
摘要： An engine exhaust gas purifier includes: an injection controller allowing a fuel injection valve to inject fuel near the top dead center on each compression stroke; an EGR amount controller for controlling the amount of exhaust gas recirculated into a combustion chamber; an excess air ratio controller for controlling the excess air ratio so that the local equivalence ratio in a late combustion stage is lower than the equivalence ratio at which soot is produced; and an intake air temperature controller for controlling the temperature of intake air after being mixed with exhaust gas. The intake air temperature controller controls the temperature of intake air within a temperature range lower than an upper temperature limit below which a predetermined ignition delay time can be secured and higher than a lower temperature limit above which the production of HC and CO can be avoided.
摘要翻译： 发动机废气净化器包括：喷射控制器，允许燃料喷射阀在每个压缩行程上喷射靠近上止点的燃料; 用于控制再循环到燃烧室中的废气量的EGR量控制器; 用于控制过量空气比的过量空气比控制器，使得后期燃烧阶段的局部当量比低于产生烟灰的当量比; 以及用于控制与废气混合后的进气温度的进气温度控制器。 进气温度控制器控制在比可以确保预定点火延迟时间的上限温度以下的温度范围内的进气温度，并且高于可以避免HC和CO的产生的较低温度限制。
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公开(公告)号：US08464686B2
公开(公告)日：2013-06-18
申请号：US12619530
申请日：2009-11-16
申请人： Sangkyu Kim , Daisuke Shimo , Motoshi Kataoka
发明人： Sangkyu Kim , Daisuke Shimo , Motoshi Kataoka
CPC分类号： F02B23/0672 , F02B23/0651 , F02B23/0669 , Y02T10/125
摘要： A wall shape of a cavity consists of an inward protruding portion located at the periphery of an opening, a center portion projecting toward a fuel injector, and a peripheral portion connecting the inward protruding portion and the center portion. The fuel injector and the cavity are configured so that fuel injected from fuel injector directs to the proximity of the border between the inward protruding portion and the peripheral portion. The peripheral portion consists of a first portion located farthermost from the fuel injector, a second portion located between the inward protruding portion and the first portion, and a third portion located between the first portion and the center portion. The radii of arcs of the peripheral portion decrease from the second portion to the first portion and increase from the first portion to the third portion.
摘要翻译： 空腔的壁形由位于开口周边的向内突出部分，朝向燃料喷射器突出的中心部分和连接向内突出部分和中心部分的周边部分组成。 燃料喷射器和空腔被构造成使得从燃料喷射器喷射的燃料引导到内向突出部分和周边部分之间的边界附近。 周边部分由位于燃料喷射器最远处的第一部分，位于内部突出部分和第一部分之间的第二部分和位于第一部分和中心部分之间的第三部分组成。 周边部分的弧的半径从第二部分减小到第一部分，并且从第一部分增加到第三部分。
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公开(公告)号：US20090045269A1
公开(公告)日：2009-02-19
申请号：US12190463
申请日：2008-08-12
IPC分类号： F02M51/00
CPC分类号： F02M61/1806 , F02M45/086
摘要： A fuel injection nozzle for a diesel engine. The fuel injection nozzle may include a plurality of injection hole groups, each having two injection holes respectively. A distance between the two injection holes, an angle between longitudinal axes of the two injection holes and an angle between horizontal axes of said two injection holes of each injection hole group are each set such that fuel sprays injected from said two injection holes will form a single fuel spray cloud after the fuel sprays collide with a side wall of a combustion chamber formed in a top surface of a piston of the engine, and such that the distance between collision points of the fuel sprays will be in a predetermined range in which a penetration force of said fuel spray cloud along a longitudinal direction of said combustion chamber received after collision with said wall of said combustion chamber is at or near a predetermined maximum value.
摘要翻译： 一种用于柴油发动机的燃油喷嘴。 燃料喷射喷嘴可以包括分别具有两个喷射孔的多个喷射孔组。 两个喷射孔之间的距离，两个喷射孔的纵轴之间的角度和每个喷射孔组的所述两个喷射孔的水平轴线之间的角度分别被设定为使得从所述两个喷射孔注入的燃料喷射将形成 燃料喷雾与形成在发动机的活塞的顶面中的燃烧室的侧壁碰撞的单燃料喷雾云，并且燃料喷射的碰撞点之间的距离将处于预定范围内，其中 所述燃料喷雾云沿与所述燃烧室的所述壁碰撞之后接收的所述燃烧室的纵向方向的穿透力处于或接近预定的最大值。
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公开(公告)号：US20080022972A1
公开(公告)日：2008-01-31
申请号：US11802417
申请日：2007-05-22
IPC分类号： F02M25/07
CPC分类号： F02D41/005 , F02B29/0406 , F02D41/403 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/23 , F02M26/38 , Y02T10/44 , Y02T10/47
摘要： An engine exhaust gas purifier includes: an injection controller allowing a fuel injection valve to inject fuel near the top dead center on each compression stroke; an EGR amount controller for controlling the amount of exhaust gas recirculated into a combustion chamber; an excess air ratio controller for controlling the excess air ratio so that the local equivalence ratio in a late combustion stage is lower than the equivalence ratio at which soot is produced; and an intake air temperature controller for controlling the temperature of intake air after being mixed with exhaust gas. The intake air temperature controller controls the temperature of intake air within a temperature range lower than an upper temperature limit below which a predetermined ignition delay time can be secured and higher than a lower temperature limit above which the production of HC and CO can be avoided.
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公开(公告)号：US5459997A
公开(公告)日：1995-10-24
申请号：US215766
申请日：1994-03-22
CPC分类号： F01N3/222 , F01N11/00 , F01N3/22 , F01N2550/02 , Y02T10/47
摘要： An exhaust gas purification system having a catalyst for removing nitrogen oxides from exhaust gas causes the temperature range of activation of the catalyst to shift toward the higher temperature side when the degree of oxidation of the catalyst becomes pronounced.
摘要翻译： 具有从排气中除去氮氧化物的催化剂的排气净化系统使得当催化剂的氧化程度变得明显时，催化剂的活化温度范围向较高温度侧移动。
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公开(公告)号：US06725829B2
公开(公告)日：2004-04-27
申请号：US10394039
申请日：2003-03-24
IPC分类号： F02B300
CPC分类号： F02D41/0057 , F02B1/12 , F02B3/06 , F02B47/08 , F02D41/0072 , F02D41/3035 , F02D41/3064 , F02D41/405 , Y02T10/44 , Y02T10/47
摘要： In a combustion control apparatus of a direct-injection diesel engine, in which a fuel is injected at an early timing with an EGR ratio more than a first predetermined value at pre-mixed combustion area (H) where an engine load is relatively low so as to provide a pre-mixed combustion mode, while a diesel combustion mode is provided with the EGR ratio less than a second predetermined value at diffusion combustion area (D), when the operation of the engine 1 transfers from one of the pre-mixed combustion area (H) and the diffusion combustion area (D) to the other thereof, an opening of the an EGR valve 35 is changed and thereby a fuel injection mode is changed after an actual EGR ratio: EGR becomes a predetermined value: EGR1. When the EGR ratio: EGR is within a certain range (SB5→SB13→SB15), a follow-up injection (latter-injection) is executed (SB15, SB7) so that combustion thereby may begin at the timing when the main-combustion beginning at around TDC completes mostly. The latter-injection can make smoke produced by the main-injection burn again effectively. As a result, smoke concentration in the exhaust gas can be reduced greatly, and a transient deterioration of the exhaust gas condition at the transition between the operating areas (H), (D) and the like can be avoided.
摘要翻译： 在直喷式柴油发动机的燃烧控制装置中，在发动机负荷相对较低的预混合燃烧区域（H）的情况下，在EGR率大于第一预定值的早期时刻喷射燃料，因此， 为了提供预混合燃烧模式，当柴油机燃烧模式在扩散燃烧区域（D）处具有小于第二预定值的EGR率时，当发动机1的运转从预混合燃烧模式 燃烧区域（H）和扩散燃烧区域（D）之间，EGR阀35的开口被改变，从而在实际EGR率：EGR变为预定值：EGR1之后燃料喷射模式改变。 当EGR率：EGR在一定范围内（SB5-> SB13-> SB15）时，执行后续喷射（后期喷射）（SB15，SB7），从而可以在主燃烧时刻开始燃烧 在TDC周围开始的燃烧主要完成。 后者注射可以使主喷射产生的烟气再次有效燃烧。 结果，可以大大降低废气中的烟雾浓度，并且可以避免在操作区域（H），（D）等之间的过渡处的废气条件的暂时劣化。
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公开(公告)号：US06990949B2
公开(公告)日：2006-01-31
申请号：US10397829
申请日：2003-03-27
IPC分类号： F02B3/00
CPC分类号： F02B1/12 , F02B3/06 , F02B29/0406 , F02B75/02 , F02B2275/14 , F02D23/00 , F02D35/02 , F02D41/0057 , F02D41/3035 , F02D41/3047 , F02D41/40 , F02D41/402 , F02D2200/0406 , F02D2200/0414 , F02M26/05 , F02M26/10 , F02M26/23 , F02M26/33 , F02M26/57 , Y02T10/123 , Y02T10/44 , Y02T10/47
摘要： To suppress deposition of fuel injected at an early timing on a wall surface for preventing the degradation in fuel efficiency and increase in the amount of harmful components in an exhaust gas, in a direct-injection diesel engine which controls the injector to cause a combustion configuration dominated by the compressive ignition of the premixture while the engine is in the premixed combustion region defined on a low load side. When fuel is injected at an early timing to form the premixture, at least one of the pulse width to be inputted into the injector and the fuel pressure is or are adjusted according to the change in the injection timing, and corrected according to the intake air temperature or the intake pressure. If an allowable pulse width is insufficient to inject fuel in the amount corresponding to a target torque, fuel is injected in a divided manner.
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公开(公告)号：US06964256B2
公开(公告)日：2005-11-15
申请号：US10397833
申请日：2003-03-27
IPC分类号： F02B1/12 , F02B29/04 , F02B75/02 , F02D21/08 , F02D23/00 , F02D35/02 , F02D41/30 , F02D41/40 , F02M25/07 , F02B17/00
CPC分类号： F02D41/0057 , F02B1/12 , F02B29/0406 , F02B29/0493 , F02B75/02 , F02B2275/14 , F02D23/00 , F02D35/02 , F02D41/0072 , F02D41/3035 , F02D41/3047 , F02D41/402 , F02M26/05 , F02M26/10 , F02M26/23 , F02M26/33 , F02M26/57 , Y02T10/123 , Y02T10/44 , Y02T10/47
摘要： To optimize an ignition timing of premixture for improving fuel efficiency regardless of significant change in an EGR ratio or a fluctuation in temperature of recirculated exhaust gas and temperature in a combustion chamber, there is provided a control apparatus for a diesel engine which controls an injector extending into the combustion chamber to execute a main-injection for injecting fuel and increasing the EGR ratio, so as to attain the premixed compressive ignition combustion while the engine is in the premixed combustion region on the low load side. Just before or after a cool flame reaction occurs in the mixture formed by the main-injection, an auxiliary-injection is executed so that the latent heat of vaporization of the fuel decreases the temperature of the mixture to delay the ignition to a timing near TDC. The auxiliary-injection amount is adjusted according to the estimated value of EGR ratio or the change in the crank angular velocity to optimize the ignition timing of the mixture.
摘要翻译： 为了优化用于提高燃料效率的预混合物的点火正时，而不管EGR比率的显着变化或再循环废气的温度波动和燃烧室中的温度如何，都提供了一种用于控制喷射器延伸的喷射器的控制装置 进入燃烧室以执行用于喷射燃料的主喷射和增加EGR率，以便在发动机处于低负荷侧的预混合燃烧区域中时获得预混合的点火燃烧。 在通过主喷射形成的混合物中发生冷焰反应之前或之后，执行辅助喷射，使得燃料的蒸发潜热降低混合物的温度以将点火延迟到接近TDC的时间 。 根据EGR率的估计值或曲柄角速度的变化来调整辅助喷射量，以优化混合物的点火正时。
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