公开(公告)号：US20030115870A1

公开(公告)日：2003-06-26

申请号：US10188382

申请日：2002-07-02

发明人： Helmut Finger ,  Peter Fledersbacher ,  Roger Martin ,  Siegfried Sumser

IPC分类号： F02D023/00

CPC分类号： F02B37/24 ,  F02B37/16 ,  F04D25/04 ,  F04D27/0215 ,  F04D27/0238 ,  Y02T10/144

摘要： An exhaust-gas turbocharger in an internal combustion engine has a turbine and a compressor which is driven by the turbine and contains, in a compressor flow duct, a compressor impeller. A bypass to the compressor impeller communicates with the inflow duct via a first flow opening and, via a second flow opening, communicates with the compressor outflow region downstream of the outlet edge of the compressor impeller. A shutoff element which may be adjusted between a closing position and an opening position is provided in the bypass for the purpose of variably setting the effective flow cross-section of the bypass. The adjustable shutoff element is arranged in the second flow opening to the compressor outflow region.

摘要翻译： 内燃机中的废气涡轮增压器具有涡轮机和压缩机，该涡轮机和压缩机由涡轮机驱动，并在压缩机流路中包含压缩机叶轮。 与压缩机叶轮的旁路经由第一流动开口与流入管道连通，并且经由第二流动开口与压缩机叶轮的出口边缘下游的压缩机流出区域连通。 为了可变地设置旁路的有效流动横截面，在旁路中设置有可以在关闭位置和打开位置之间调节的关闭元件。 可调关闭元件设置在压缩机流出区域的第二流动开口中。

公开(公告)号：US20030079474A1

公开(公告)日：2003-05-01

申请号：US10283682

申请日：2002-10-30

申请人： DAIMLERCHRYSLER AG

发明人： Helmut Finger ,  Lothar Lenke ,  Erwin Schmidt ,  Siegfried Sumser

IPC分类号： F02D023/00

CPC分类号： F01D17/165 ,  F02C6/12

摘要： An exhaust gas turbocharger for an internal combustion engine, which has an exhaust gas turbine in the exhaust system and a compressor in the induction system, comprises a variable turbine geometry, associated with the turbine, for adjustably setting a radial inlet cross section for the flow to the turbine rotor. The variable turbine geometry is configured as a guide cascade ring, which has guide vanes distributed over the periphery and encompasses the turbine rotor. The minimum distance between two adjacent guide vanes obeys a specified relationship with respect to the diameter of the turbine rotor and the number of guide vanes of the guide cascade ring. In addition, a flow edge is provided on the radially inner surface of each guide vane.

摘要翻译： 一种用于内燃机的排气涡轮增压器，其在排气系统中具有排气涡轮机和在该感应系统中的压缩机，包括与该涡轮相关联的可变涡轮几何形状，用于可调节地设定该流量的径向入口横截面 到涡轮转子。 可变涡轮机几何形状被构造为引导级联环，引导级联环具有分布在周边上并包围涡轮转子的导向叶片。 两个相邻的导向叶片之间的最小距离相对于涡轮机转子的直径和引导级联环的导向叶片的数量达到规定的关系。 此外，在每个导叶的径向内表面上设置流动边缘。

公开(公告)号：US20030029168A1

公开(公告)日：2003-02-13

申请号：US09924028

申请日：2001-08-07

发明人： Robert L. Hercey ,  Donald W. Heston ,  David L. Lehman

IPC分类号： F02D023/00

CPC分类号： F02D23/00 ,  Y02T10/144

摘要： Engines having turbochargers with a mechanically actuated wastegate typically control the wastegate in response to the air pressure at an outlet of a compressor portion of the turbocharger. Some engine configurations don't provide enough compressor outlet pressure variation to suitably control the wastegate. In the present invention, a control strategy is provided for opening and closing a wastegate based on exhaust gas pressure.

摘要翻译： 具有机械致动废气门的涡轮增压器的发动机通常响应于涡轮增压器的压缩机部分的出口处的空气压力来控制废气门。 一些发动机配置不能提供足够的压缩机出口压力变化以适当地控制废气门。 在本发明中，提供了一种基于废气压力打开和关闭废气门的控制策略。

公开(公告)号：US20030014973A1

公开(公告)日：2003-01-23

申请号：US10180652

申请日：2002-06-26

发明人： Jean-Francois Mazaud ,  Juerg Spuler

IPC分类号： F02D023/00

CPC分类号： F02D41/0007 ,  F01L1/34 ,  F01L13/065 ,  F01L2760/004 ,  F01L2800/00 ,  F02B29/0406 ,  F02B37/22 ,  F02B37/24 ,  F02B39/16 ,  F02D9/06 ,  F02D13/04 ,  F02M26/05 ,  F02M26/10 ,  F02M26/23 ,  Y02T10/144

摘要： An engine-turbocharger unit for a vehicle, in particular an industrial vehicle, having an internal combustion engine; a decompression brake device; and a turbocharger in turn having a variable-geometry turbine driven by the exhaust gas from the engine, and a compressor driven by the turbine and connected at the outlet to an intake manifold of the engine; the unit also has a throttling device located on the outlet side of the turbine and settable between a fully-open attitude and a closed attitude; the variable-geometry turbine and the throttling device are jointly controlled, thereby allowing independent control of the exhaust manifold pressure of the combustion engine and of the expansion ratio of the turbine.

公开(公告)号：US20030014972A1

公开(公告)日：2003-01-23

申请号：US10178754

申请日：2002-06-24

发明人： Steven Don Arnold

IPC分类号： F02D023/00

CPC分类号： F01D5/141 ,  F01D5/18 ,  F01D17/105 ,  F01D17/165 ,  F02C6/12 ,  F05D2220/40 ,  F05D2250/411

摘要： Variable geometry turbochargers comprise a turbine housing having an exhaust gas inlet and outlet, a volute connected to the inlet, and a nozzle wall adjacent the volute. A turbine wheel is carried within the turbine housing and is attached to a shaft. A plurality of movable vanes are disposed within the turbine housing adjacent the nozzle wall, and are positioned between the exhaust gas inlet and turbine wheel. The turbine housing includes a bypass exhaust gas flow port disposed internally therein having an inlet opening positioned upstream from the turbine wheel, and a outlet opening positioned downstream from the turbine wheel. The vanes are positioned adjacent respective bypass ports such that the inlet opening for each port is at least partially covered by a respective vane depending on vane placement. The inlet opening is exposed for facilitating bypass exhaust gas flow through the turbocharger when the respective vane is actuated or moved into an open position. The turbine housing may also comprise a specially configured nozzle wall terminal edge designed to work with vanes having a recessed underside surface to permit additional bypass exhaust gas flow within the turbocharger when the vanes are actuated in an open position.

摘要翻译： 可变几何涡轮增压器包括具有排气入口和出口，连接到入口的蜗壳和与蜗壳相邻的喷嘴壁的涡轮机壳体。 涡轮机叶轮承载在涡轮壳体内并且附接到轴。 多个可移动叶片设置在涡轮壳体内邻近喷嘴壁，并且位于排气入口和涡轮机叶轮之间。 涡轮壳体包括旁通排气流动端口，其内部设置有具有位于涡轮机叶轮上游的入口开口和位于涡轮机叶轮下游的出口。 叶片位于相邻的旁通端口附近，使得每个端口的入口开口至少部分地由相应的叶片覆盖，这取决于叶片布置。 当相应的叶片被致动或移动到打开位置时，入口开口被暴露以便于旁路废气流过涡轮增压器。 涡轮机壳体还可以包括专门配置的喷嘴壁终端边缘，其设计成与具有凹陷的下侧表面的叶片一起工作，以便当叶片在打开位置被致动时，允许在涡轮增压器内额外的旁路废气流动。

公开(公告)号：US20020170291A1

公开(公告)日：2002-11-21

申请号：US10049914

申请日：2002-02-20

发明人： Takashi Shirakawa

IPC分类号： F02D023/00

CPC分类号： F02M63/0225 ,  F02B37/22 ,  F02B37/24 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/0065 ,  F02D41/14 ,  F02D41/1454 ,  F02D41/2441 ,  F02D41/2451 ,  F02D2041/1409 ,  F02D2041/141 ,  F02D2041/1422 ,  F02D2041/1431 ,  F02D2200/0414 ,  F02D2200/602 ,  F02D2200/703 ,  F02M26/05 ,  F02M26/10 ,  F02M26/28 ,  F02M26/33 ,  F02M47/027 ,  F02M59/366 ,  Y02T10/144 ,  Y02T10/47

摘要： A fresh air amount of an engine (1) is controlled by a variable nozzle (53) of a turbocharger (50). A controller (41) calculates an open loop control value of a drive signal of a variable nozzle (53) based on the running state of the engine (1). A target intake fresh air amount of the engine (1) is calculated based on the running state, and a processing value obtained by smoothing the target intake fresh air amount value is calculated (S132). A feedback control value of the drive signal is calculated so that a real intake fresh air amount coincides with the processing value (S367). The variable nozzle (53) is controlled based on the open loop value and feedback control value. By using the processing value as the target value of the feedback control, unstable factors in feedback control resulting from the time delay from operation of the variable nozzle (53) to change of the intake fresh air amount aspirated by the engine (1), are eliminated.

摘要翻译： 发动机（1）的新鲜空气量由涡轮增压器（50）的可变喷嘴（53）控制。 控制器（41）基于发动机（1）的行驶状态来计算可变喷嘴（53）的驱动信号的开环控制值。 基于运行状态计算发动机（1）的目标进气新鲜空气量，并计算通过使目标进气新鲜空气量值平滑化而获得的处理值（S132）。 计算驱动信号的反馈控制值，使得真正的进气新鲜空气量与处理值一致（S367）。 基于开环值和反馈控制值来控制可变喷嘴（53）。 通过使用处理值作为反馈控制的目标值，由从可变喷嘴（53）的操作到由发动机（1）吸入的进气新鲜空气量的改变的时间延迟引起的反馈控制中的不稳定因素是 消除了

公开(公告)号：US20020088229A1

公开(公告)日：2002-07-11

申请号：US10063057

申请日：2002-03-15

申请人： Volvo Car Corporation

发明人： Goran Almkvist ,  Karin Thorn ,  Sten Sjostrom

IPC分类号： F02D023/00

CPC分类号： F02D13/0207 ,  F01L1/34 ,  F02D13/0215 ,  F02D13/0253 ,  F02D13/0265 ,  F02D13/0269 ,  F02D41/024 ,  F02D2013/0292 ,  F02D2041/001 ,  F02D2041/026 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/26

摘要： The invention discloses a method of reducing emissions in the exhaust gases of an internal combustion engine having at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine rotates, at least one inlet valve, at least one exhaust valve, control members for controlling the opening and closing of the inlet and exhaust valves, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method includes the steps of supplying an air/fuel mixture with lambda value greater than 1 to the cylinder, controlling the internal combustion engine so that it works at high load, and controlling the inlet valve so that it opens after the piston has passed the top dead-center position. According to an embodiment of the invention, the internal combustion engine is controlled so that the crankshaft rotates at an essentially constant speed within a range of about 1000 to about 2000 rpm.

摘要翻译： 本发明公开了一种减少内燃机废气排放的方法，该内燃机具有至少一个气缸，当内燃机的曲轴转动时，供给空气/燃料混合物，至少一个入口阀，至少一个 排气阀，用于控制入口和排气阀的打开和关闭的控制构件，以及在气缸中的上止点位置和下死点位置之间往复运动的活塞。 该方法包括以下步骤：将具有大于1的λ值的空气/燃料混合物供应到气缸，控制内燃机使其在高负载下工作，并且控制入口阀使其在活塞已经通过之后打开 上死点位置。 根据本发明的实施例，控制内燃机使得曲轴以基本上恒定的速度在大约1000至大约2000rpm的范围内旋转。

公开(公告)号：US20020073705A1

公开(公告)日：2002-06-20

申请号：US09742556

申请日：2000-12-20

发明人： Sean O. Cornell ,  Scott Leman ,  David E. Martin ,  Ronald E. Shinogle

IPC分类号： F02D023/00

CPC分类号： F02D41/12 ,  F02D13/04 ,  F02D41/0007 ,  F02D2200/704 ,  F02D2250/41 ,  Y02T10/144

摘要： A method of engine compression release braking with avoidance of turbine overspeed is disclosed. Initially, an electronic control module determines whether a turbine overspeed condition is present. If an overspeed condition is present, then the blow down timing of an engine compression release braking event is advanced. The present invention is particularly applicable to preventing turbine overspeed for vehicles operating at higher altitudes while compression braking.

摘要翻译： 公开了一种避免涡轮超速的发动机压缩释放制动方法。 最初，电子控制模块确定是否存在涡轮超速状况。 如果存在超速状态，则发动机压缩释放制动事件的减速时间提前。 本发明特别适用于在压缩制动时防止在较高高度工作的车辆的涡轮超速。

公开(公告)号：US20020059797A1

公开(公告)日：2002-05-23

申请号：US10010089

申请日：2001-12-06

申请人： Detroit Diesel Corporation

发明人： Admir M. Kreso

IPC分类号： F02D023/00

CPC分类号： F02D41/0072 ,  F02B37/24 ,  F02D2041/0067 ,  F02D2200/0406 ,  F02D2200/0414 ,  G01F1/36 ,  G01F1/42 ,  Y02T10/144 ,  Y02T10/47

摘要： A system and method for measuring the flow rate of recirculated exhaust gas in a compression ignition engine including a plurality of engine sensors having outputs indicative of current engine conditions and a turbocharger. The system includes an exhaust gas recirculation (EGR) valve mounted in the exhaust pipe upstream of the turbocharger for diverting a selectable portion of the exhaust gas for recirculation and combination with the charge air, one or more sensors for sensing current conditions of the recirculated exhaust gas, including temperature and pressure, one or more sensors for sensing current conditions of the intake air, and control logic for determining the flow rate of the recirculated exhaust gas as a function of the sensed conditions. In one embodiment, the system includes an obstruction in the flow path of the recirculated exhaust gas and a differential pressure sensor for determining the pressure differential between a point upstream of the obstruction and a point downstream of the obstruction and control logic for determining the flow rate of the recirculated exhaust gas as a function of the current intake manifold pressure, the recirculated exhaust gas temperature, and the differential pressure drop across the obstruction.

摘要翻译： 一种用于测量压缩点火发动机中再循环废气的流量的系统和方法，包括具有指示当前发动机状况的输出的多个发动机传感器和涡轮增压器。 该系统包括安装在涡轮增压器上游的排气管中的排气再循环（EGR）阀，用于转向排气的可选择部分以再循环并与增压空气组合，一个或多个传感器，用于感测再循环排气的当前状况 气体，包括温度和压力，用于感测进气的当前状况的一个或多个传感器，以及用于根据感测到的条件确定再循环废气的流量的控制逻辑。 在一个实施例中，系统包括在再循环废气的流动路径中的障碍物和差压传感器，用于确定障碍物上游的点与障碍物下游点之间的压力差和用于确定流量的控制逻辑 作为当前进气歧管压力，再循环排气温度和阻塞上的差压压力的函数的再循环废气。

公开(公告)号：US20010045093A1

公开(公告)日：2001-11-29

申请号：US09797342

申请日：2001-02-28

申请人： QUOIN INTERNATIONAL, INC.

发明人： Michael Dean Jacobson

IPC分类号： F02D023/00

CPC分类号： F02C6/16 ,  F01D1/30 ,  F02D29/04 ,  Y02E60/15

摘要： A pneumatic/mechanical actuator described herein consists of a variation of a Brayton-cycle machine for generating actuation force. The system avoids the continues heat problem of a Brayton-cycle by using compressed gas to drive a reversible turbine. The turbine only is driven when a change of actuation position. The system includes an internal-combustion engine-air compressor, a pneumatic energy storage and transfer system, a fuel/air mixing means, two electric pilot valves, two lean-ratio high-pressure catalytic-bed burners, a small-diameter and reversible turbine, a ratio speed-reducing transmission, an optical-encoder feedback position and speed sensor and a ball-screw push-rod mechanism. An alternative embodiment uses a free piston engine compressor hybrid to provide the compressed air. Manual or computer control may be used to monitor and direct desired changes in actuator position.

摘要翻译： 本文所述的气动/机械致动器由用于产生致动力的布雷顿循环机的变体组成。 该系统通过使用压缩气体驱动可逆涡轮机来避免布雷顿循环的持续热问题。 涡轮机只在启动位置发生变化时被驱动。 该系统包括内燃机空气压缩机，气动能量储存和输送系统，燃料/空气混合装置，两个电导阀，两个贫比高压催化床燃烧器，小直径和可逆 涡轮，比例减速传动，光编码器反馈位置和速度传感器以及滚珠丝杠推杆机构。 替代实施例使用自由活塞发动机压缩机混合动力来提供压缩空气。 可以使用手动或计算机控制来监视和指导执行器位置的所需变化。