公开(公告)号：US08171914B2

公开(公告)日：2012-05-08

申请号：US12440892

申请日：2007-08-30

申请人： Frank Atzler ,  Oliver Kastner ,  Andreas Weigand

发明人： Frank Atzler ,  Oliver Kastner ,  Andreas Weigand

IPC分类号： F02M7/00 ,  F02M25/07 ,  F02D41/30

CPC分类号： F02D35/023 ,  F02D35/026 ,  F02D41/401 ,  F02D41/402 ,  F02D41/403 ,  F02M45/02 ,  F02M45/12 ,  Y02T10/44

摘要： To reduce pollutant emissions and consumption of passenger cars diesel engines multiple injection strategies are applied. Assuming constant cylinder and bowl geometry and constant rail pressure the variation of the number of injections, injection quantity of each injection and separation between two consecutive injections are the major parameters to be optimised. Furthermore, a single injection is applied with a shaped injection rate by a rise in injection pressure, equal to that observed in cam controlled injection systems. The needle lift can be modified for piezo driven common rail injection systems.Both methods are compared in terms of pollutant emission, fuel consumption and robustness. Experiments were carried out on single cylinder research engines. Multiple injection strategies with large hydraulic dwell times were compared with a short dwell setting simulating a “rate shaped” single injection. Rate shaping was implemented performing multiple injections with hydraulic dwell times close to or equal zero.

摘要翻译： 为了减少乘用车柴油发动机的污染物排放和消耗，采用多种喷射策略。 假设恒定缸体和碗几何形状以及不变轨道压力，两次连续喷射之间的喷射次数，每次喷射的喷射量和分离的变化是要优化的主要参数。 此外，通过注射压力的升高，单次注射以成形的注射速率施加，等于在凸轮控制的注射系统中观察到的注射压力。 针式电梯可以用于压电驱动共轨注射系统。 这两种方法在污染物排放，燃料消耗和鲁棒性方面进行了比较。 在单缸研究引擎上进行实验。 将具有大液压停留时间的多次注射策略与模拟“速率成形”单次注射的短暂停留设置进行比较。 液压停留时间接近或等于零进行了多次注射。

公开(公告)号：US20120035833A1

公开(公告)日：2012-02-09

申请号：US13182484

申请日：2011-07-14

申请人： Massimiliano MELIS ,  Matteo ALLASIA ,  Vincenzo RAMPINO

发明人： Massimiliano MELIS ,  Matteo ALLASIA ,  Vincenzo RAMPINO

IPC分类号： F02D41/30 ,  F02D28/00

CPC分类号： F02D41/402 ,  F02D41/401 ,  F02D41/403 ,  Y02T10/44

摘要： A method is provided for estimating a hydraulic dwell time between a first injection pulse and a second injection pulse performed by a fuel injector of an internal combustion engine. The method includes, but is not limited to determining a value of an electric dwell time between the first injection pulse and the second injection pulse, estimating a value of an injector closing delay between an instant in which an electric closing command of the first injection pulse is generated and an instant in which the fuel injector closes, estimating a value of an injector opening delay between an instant in which an electric opening command of the second injection pulse is generated and an instant in which the fuel injector opens, and calculating a value of the hydraulic dwell time as a function of the electric dwell time value, of the injector closing delay value and of the injector opening delay value.

摘要翻译： 提供了一种用于估计由内燃机的燃料喷射器执行的第一喷射脉冲和第二喷射脉冲之间的液压停留时间的方法。 该方法包括但不限于确定第一喷射脉冲和第二喷射脉冲之间的电停留时间的值，估计在第一喷射脉冲和第二喷射脉冲的闭合指令之间的喷射器闭合延迟的值 产生燃料喷射器闭合的瞬间，估计在产生第二喷射脉冲的电开启指令的瞬间与燃料喷射器打开的瞬间之间的喷射器打开延迟的值，并计算值 作为电停留时间值，喷射器关闭延迟值和喷射器打开延迟值的函数的液压停留时间。

公开(公告)号：US08099231B1

公开(公告)日：2012-01-17

申请号：US12858693

申请日：2010-08-18

申请人： Yujiro Suwa

发明人： Yujiro Suwa

IPC分类号： G06F19/00

CPC分类号： F02D41/221 ,  F02D41/403 ,  F02D2200/025 ,  Y02T10/44

摘要： A control system for an engine includes an injection control module, a processing module, and a malfunction detection module. The injection control module commands a fuel injector to operate in a split injection mode. The processing module that measures engine vibration during a period after commanding the split injection mode. The malfunction detection module detects a malfunction of the fuel injector based on a comparison between the measured engine vibration and expected engine vibration.

摘要翻译： 用于发动机的控制系统包括喷射控制模块，处理模块和故障检测模块。 喷射控制模块命令燃料喷射器以分流喷射模式操作。 处理模块，用于在指定分流喷射模式之后的一段时间内测量发动机振动。 故障检测模块基于测量的发动机振动与预期的发动机振动之间的比较来检测燃料喷射器的故障。

公开(公告)号：US20120000441A1

公开(公告)日：2012-01-05

申请号：US13160871

申请日：2011-06-15

申请人： Eiji Nakai ,  Sadaharu Matsumoto ,  Naotoshi Shirahashi ,  Shinichi Morinaga

发明人： Eiji Nakai ,  Sadaharu Matsumoto ,  Naotoshi Shirahashi ,  Shinichi Morinaga

IPC分类号： F02D41/30 ,  F02M51/00

CPC分类号： F02D41/403 ,  F02D35/02 ,  F02D41/0007 ,  F02D41/0087 ,  F02D2250/18 ,  F02D2700/03 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/44

摘要： A diesel engine for a vehicle comprises an engine body mounted in the vehicle having a plurality of cylinders that is supplied with fuel, a plurality of fuel injection valves for directly injecting the fuel into the cylinders, and an injection control module for controlling a mode of injecting the fuel into the cylinders through the fuel injection valves. The injection control module sets a fuel injection amount per cylinder at least according to a load on the engine body, performs a main injection, and performs at least one pre-injection where fuel is injected prior to the main injection. The injection control module further executes a cylinder-cutoff operation mode where the fuel supplies to the cylinder or the cylinders are stopped when the engine body is under a low load condition where the fuel injection amount per cylinder is below a predetermined amount.

摘要翻译： 一种用于车辆的柴油发动机，包括安装在车辆中的发动机主体，其具有供给燃料的多个气缸，用于将燃料直接喷射到气缸中的多个燃料喷射阀，以及用于控制燃料的模式的喷射控制模块 通过燃料喷射阀将燃料喷射到气缸中。 喷射控制模块至少根据发动机主体上的负载来设定每个气缸的燃料喷射量，执行主喷射，并且在主喷射之前执行至少一个喷射燃料的预喷射。 喷射控制模块进一步执行气缸关闭操作模式，其中当发动机主体处于每个气缸的燃料喷射量低于预定量的低负载状态时，停止对气缸或气缸的燃料供给。

公开(公告)号：US20110313641A1

公开(公告)日：2011-12-22

申请号：US13197316

申请日：2011-08-03

申请人： Chris Paul Glugla ,  Michael Mancini

发明人： Chris Paul Glugla ,  Michael Mancini

IPC分类号： F02D41/30 ,  F02D28/00

CPC分类号： F02P5/1528 ,  F02D35/02 ,  F02D35/021 ,  F02D35/023 ,  F02D35/027 ,  F02D41/0007 ,  F02D41/0025 ,  F02D41/10 ,  F02D41/182 ,  F02D41/402 ,  F02D41/403 ,  F02M69/46 ,  Y02T10/144 ,  Y02T10/44

摘要： Methods are provided for controlling an engine in response to a pre-ignition event. A pre-ignition threshold and a pre-ignition mitigating action are adjusted based on a rate of change of cylinder aircharge. As a result, pre-ignition events occurring during transient engine operating conditions are detected and addressed different from pre-ignition events occurring during steady-state engine operating conditions.

摘要翻译： 提供了用于响应于预先点火事件来控制发动机的方法。 基于气缸充气变化率来调节预点火阈值和预点火减轻动作。 因此，在瞬态发动机运行条件期间发生的预先点火事件被检测和寻址，不同于稳态发动机运行条件期间发生的预先点火事件。

公开(公告)号：US08065071B2

公开(公告)日：2011-11-22

申请号：US12302935

申请日：2007-04-20

申请人： Uwe Jung ,  Janos Radeczky ,  Michael Wirkowski

发明人： Uwe Jung ,  Janos Radeczky ,  Michael Wirkowski

IPC分类号： F02B47/08 ,  F02M25/07 ,  F02D41/26

CPC分类号： F02D41/1498 ,  F02D41/0055 ,  F02D41/0072 ,  F02D41/0085 ,  F02D41/009 ,  F02D41/08 ,  F02D41/22 ,  F02D41/403 ,  F02D2200/1012 ,  F02D2250/18 ,  Y02T10/47

摘要： In a method of operating an internal combustion engine having at least two combustion chambers, each combustion chamber contributes torque to the total torque of the internal combustion engine, and the internal combustion engine is designed in such a way that a quantity of exhaust gas can be recycled into combustion chambers. The method has the steps: (a) detecting the torque contributions of at least two combustion chambers, then (b) changing the quantity of exhaust gas recycled into the combustion chambers, the torque contribution of which has been detected in step (a), then (c) detecting the torque contributions of at least two combustion chambers, the torque contribution of which has been detected in step (a), then (d) determining the change in the torque contributions as a result of the change in the quantity of recycled exhaust gas, and then (e) outputting a signal as a function of the change in the torque contributions.

摘要翻译： 在操作具有至少两个燃烧室的内燃机的方法中，每个燃烧室对内燃机的总扭矩提供扭矩，并且内燃机的设计使得排气量可以是 再循环进入燃烧室。 该方法具有以下步骤：（a）检测至少两个燃烧室的转矩贡献，然后（b）改变在步骤（a）中检测到的转矩贡献的再循环到燃烧室中的排气量， 然后（c）检测在步骤（a）中检测到的转矩贡献的至少两个燃烧室的转矩贡献，然后（d）确定扭矩贡献的变化是由于 再循环废气，然后（e）根据转矩贡献的变化输出信号。

公开(公告)号：US08036812B2

公开(公告)日：2011-10-11

申请号：US12849161

申请日：2010-08-03

申请人： Christian Winge Vigild ,  Daniel Roettger ,  David Joseph Dronzkowski ,  Eric Kurtz

发明人： Christian Winge Vigild ,  Daniel Roettger ,  David Joseph Dronzkowski ,  Eric Kurtz

IPC分类号： F02D41/30 ,  F02B3/00 ,  F02M51/00

CPC分类号： F02D41/0072 ,  F02D41/144 ,  F02D41/1454 ,  F02D41/40 ,  F02D41/403 ,  Y02T10/44 ,  Y02T10/47

摘要： A system and method are disclosed for controlling an internal combustion engine in which actual concentration of combusted gas in the intake is compared with desired concentration of combusted gas in the intake. When a difference is detected, at least one of start of injection timing and quantity of fuel injected is adjusted in accordance with the difference. The actual concentration of combusted gas in the intake is estimated based on engine sensors such as an oxygen sensor coupled to an engine intake. The adjustment of injection timing and/or quantity of fuel is performed, according to some embodiments, during a transition between a low temperature combustion mode and a standard diesel combustion mode.

摘要翻译： 公开了一种用于控制内燃机的系统和方法，其中将进气中的燃烧气体的实际浓度与进气中的所需燃烧气体浓度进行比较。 当检测到差异时，根据差异来调整喷射正时开始和喷射量中的至少一个。 进气中燃烧气体的实际浓度基于诸如与发动机进气口相连的氧传感器的发动机传感器来估计。 根据一些实施例，在低温燃烧模式和标准柴油燃烧模式之间的过渡期间，执行喷射正时和/或燃料量的调节。

公开(公告)号：USRE42609E1

公开(公告)日：2011-08-16

申请号：US12568988

申请日：2009-09-29

申请人： Eric Matthew Kurtz ,  John H. Vanderslice

发明人： Eric Matthew Kurtz ,  John H. Vanderslice

IPC分类号： F02M45/02 ,  F02M25/07 ,  F02M51/00

CPC分类号： F02D41/005 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0696 ,  F02B29/0406 ,  F02B2275/14 ,  F02D41/0065 ,  F02D41/402 ,  F02D41/403 ,  F02M26/05 ,  F02M26/06 ,  F02M26/07 ,  F02M26/24 ,  F02M26/28 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/44 ,  Y02T10/47

摘要： The present invention is a dual-stage fuel injection strategy for compression ignition engines in which 15-40% of the fuel is injected into the combustion chamber no later than about −20 to −30 CA ATDC and as early as IVC. The remaining fuel is then injected in one or more fuel pulses, none of which start before about −20 to −30 CA ATDC. The fuel injected early in the compression stroke forms a lean mixture that burns with low soot and low NOx emissions. The combustion of that fuel serves to increase in-cylinder temperature such that the ignition delay of subsequent fuel injection pulses is short. This mode is utilized when it is predicted that a NOx spike is imminent. Various other alternative methods for reducing NOx spikes are also disclosed such as specialized EGR systems that can provide EGR with low manifold vacuum.

摘要翻译： 本发明是一种用于压缩点火发动机的双级燃料喷射策略，其中15-40％的燃料不晚于约-20至-30CA ATDC并且早于IVC被注入到燃烧室中。 然后将剩余的燃料以一个或多个燃料脉冲喷射，其中没有一个在约-20至-30CA ATDC之前开始。 在压缩冲程早期喷射的燃料形成燃烧的低烟炱和低NOx排放的稀混合物。 该燃料的燃烧用于增加缸内温度，使得随后的燃料喷射脉冲的点火延迟较短。 当预测NOx尖峰即将到来时，利用该模式。 还公开了用于减少NOx尖峰的各种其它替代方法，例如可以提供低歧管真空的EGR的专用EGR系统。

公开(公告)号：US20110088657A1

公开(公告)日：2011-04-21

申请号：US12989559

申请日：2008-04-24

申请人： Shiro Tanno ,  Yasushi Ito

发明人： Shiro Tanno ,  Yasushi Ito

IPC分类号： F02B5/00

CPC分类号： F02D41/0025 ,  F02B3/06 ,  F02B17/005 ,  F02B23/101 ,  F02B2075/125 ,  F02B2275/16 ,  F02D13/0226 ,  F02D19/061 ,  F02D19/0636 ,  F02D19/0649 ,  F02D19/0665 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/0694 ,  F02D19/081 ,  F02D35/021 ,  F02D35/023 ,  F02D35/028 ,  F02D41/3076 ,  F02D41/401 ,  F02D41/403 ,  F02D2200/0408 ,  F02D2200/0414 ,  F02D2200/0611 ,  F02D2200/0612 ,  F02M37/0064 ,  F02M37/0088 ,  Y02T10/123 ,  Y02T10/36 ,  Y02T10/44

摘要： To improve an ignitability to a fuel having a low compressed ignitability in a combustion chamber in a compressed self-ignition diffusive combustion mode operation. In a multi-fuel internal combustion engine operated by introducing at least one type of fuel among at least two types of fuels having different properties into a combustion chamber or introducing a mixed fuel composed of at least the two types of fuels into the combustion chamber, an electronic control unit is provided with a fuel characteristics detection means that detects an ignitability index value as an index showing a compressed ignitability of a fuel itself introduced into the combustion chamber, and a fuel injection control means that previously injects, when a compressed self-ignition diffusive combustion is performed using a fuel in the combustion chamber, which is determined to have a low compressed ignitability based on the ignitability index value, the fuel at a predetermined timing in a period from an intake stroke to a compression stroke, and thereafter mainly injects the fuel and introduces the fuel having the low compressed ignitability into the combustion chamber.

摘要翻译： 在压缩自点火扩散燃烧模式操作中，改善在燃烧室中具有低压缩点火性的燃料的点火性。 在通过将具有不同特性的至少两种类型的燃料中的至少一种燃料引入燃烧室或将由至少两种类型的燃料组成的混合燃料引入燃烧室中的多燃料内燃机中， 电子控制单元设置有燃料特性检测装置，其检测作为引导到燃烧室中的燃料本身的压缩点火性的指标的点火指标值，以及当压缩自对准时预先注入的燃料喷射控制装置， 使用燃烧室中的燃料进行点火扩散燃烧，该燃料被确定为在从进气冲程到压缩冲程的期间内的预定定时基于点火指数值具有低压缩点火性，然后主要 喷射燃料并将具有低压燃点燃性的燃料引入燃烧室。

公开(公告)号：US07874276B2

公开(公告)日：2011-01-25

申请号：US11816292

申请日：2006-02-13

申请人： Alain Ranini ,  Sébastien Potteau

发明人： Alain Ranini ,  Sébastien Potteau

IPC分类号： F02F3/26 ,  F02B3/00 ,  F02B19/10

CPC分类号： F02D41/403 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0651 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02M45/04 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/44

摘要： The invention relates to a method for control of fuel injection for an internal combustion engine, in particular with direct fuel injection, comprising at least one cylinder (10), one piston (30) running in said cylinder, with a projection (34) arranged in a concave bowl (32), a fuel injector (22) and a combustion chamber (26). According to the invention, during high engine loads, a first amount of fuel is injected at a piston (30) position of between 35 and 70° before the top dead centre position of said piston, followed by an injection of at least one second amount of fuel, the first amount of fuel being less than the second amount and the fuel is injected into said combustion chamber by means of an injector (22) with a cone angle (a1) less than or equal to 2Arctg CD/2F where CD is the diameter of the cylinder (10) and F the distance between the points of origin of the fuel jets from the injector (22) and the position of the piston corresponding to a crankshaft angle of 50° with relation to the top dead centre (PMH) of the piston.

摘要翻译： 本发明涉及一种用于控制内燃机的燃料喷射的方法，特别是用于直接燃料喷射的方法，包括至少一个气缸（10），一个在所述气缸中运行的活塞（30），其中突出部（34）被布置 在凹槽（32），燃料喷射器（22）和燃烧室（26）中。 根据本发明，在高发动机负载期间，在活塞的上止点位置之前的第35和70°之间的活塞（30）位置处喷射第一量的燃料，然后喷射至少一个第二量 的燃料，第一量的燃料小于第二量，并且燃料通过具有小于或等于2Arctg CD / 2F的锥角（a1）的喷射器（22）注入到所述燃烧室中，其中CD是 气缸（10）的直径，F是来自喷射器（22）的燃料喷嘴的原点和与上止点（PMH）相对应的曲轴角度为50°的活塞的位置之间的距离 ）活塞。