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259 条记录 (耗时 0.023 秒)

    System for controlling recirculated exhaust gas temperature in an internal combustion engine
    1.
    发明公开
    System for controlling recirculated exhaust gas temperature in an internal combustion engine 失效
    用于控制内燃机中的再循环排气温度的系统

    公开(公告)号：EP1270921A3

    公开(公告)日：2003-03-26

    申请号：EP02078993.9

    申请日：1997-12-11

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Charlton, Steve J. ,  Roettgen, Leslie A.

    IPC分类号： F02M25/07

    CPC分类号： F28F27/02 ,  F02D21/08 ,  F02M26/25 ,  F02M26/28 ,  F02M26/32 ,  F02M26/33 ,  F02M26/47 ,  F28D21/0003 ,  F28F2250/06

    摘要： A system (50) for controlling the temperature of recirculated exhaust gas supplied to an internal combustion engine (50). In one embodiment, the system (50) includes a heat exchanger (56) having the recirculated exhaust gas flowing therethrough and further having coolant fluid flowing therethrough. A control valve is disposed within the flow path of the coolant fluid, and the valve position is modulated to vary the rate of coolant fluid flow through the heat exchanger, thereby controlling the temperature of the recirculated exhaust gas supplied by the heat exchanger. In another embodiment, the heat exchanger defines a number of exhaust gas flow passages therethrough and a number of gas flow control valves are disposed between the exhaust gas inlet of the heat exchanger and the number of exhaust gas flow passages. The exhaust gas flow control valves are selectively actuated to disable exhaust gas flow through any number of subsets of the exhaust gas flow passages, thereby controlling the temperature of recirculated exhaust gas supplied by the heat exchanger.

    摘要翻译： 一种用于控制供应给内燃机（50）的再循环废气的温度的系统（50）。 在一个实施例中，系统（50）包括热交换器（56），该热交换器具有循环的废气流过并且还具有从其中流过的冷却剂流体。 控制阀布置在冷却剂流体的流动路径内，并且阀位置被调节以改变通过热交换器的冷却剂流体流动的速率，从而控制由热交换器供应的再循环排气的温度。 在另一个实施例中，热交换器限定穿过其中的多个排气流动通道，并且多个气流控制阀设置在热交换器的排气入口和排气流动通道的数量之间。 排气流量控制阀被选择性地致动以禁止排气流过任何数量的排气流动通道子集，从而控制由热交换器供应的再循环排气的温度。

    High-temperature coolant loop for cooled exhaust gas recirculation for internal combustion engines
    3.
    发明公开
    High-temperature coolant loop for cooled exhaust gas recirculation for internal combustion engines 有权
    用于内燃机冷却废气再循环的高温冷却剂回路

    公开(公告)号：EP1091113A3

    公开(公告)日：2001-12-12

    申请号：EP00120103.7

    申请日：2000-09-18

    申请人： Cummins Engine Company, Inc. ,  Behr GmbH & Co. ,  Behr America, Inc.

    发明人： Wall, John C. ,  Flik, Markus ,  Lange, Hans

    IPC分类号： F02M25/07

    CPC分类号： F02B29/0425 ,  F02M26/05 ,  F02M26/16 ,  F02M26/24 ,  F02M26/28 ,  Y02T10/146

    摘要： An EGR system for an internal combustion engine has a separate, secondary high-temperature cooling loop (44), in addition to a primary cooling loop (42). In the secondary cooling loop (44), coolant flows through a secondary high-temperature exhaust gas cooler (36), which is located upstream of the primary exhaust gas cooler (38). A large amount of heat is transferred from the exhaust gases to the coolant in the secondary high-temperature cooling loop (44). The heat absorbed by the high-temperature coolant is rejected in a secondary high-temperature radiator (52). Heat absorbed by the primary coolant is rejected in a primary radiator (46). The two radiators (46,52) occupy the same amount of frontal area as a single radiator used in a conventional single-stage EGR cooling system, but overall reject more heat to the ambient. In an alternate arrangement, the EGR system for a liquid-cooled internal combustion engine has a single exhaust gas cooler (136) which is cooled by an EGR cooling loop that is independent of the engine cooling system. The EGR cooling loop includes a secondary radiator (152) located adjacent the primary engine cooling radiator (146), and the two radiators (146,152) together occupy the same frontal area as a single radiator used in a conventional single-stage EGR cooling system, but overall reject more heat to the ambient.

    摘要翻译： 除了主冷却回路（42）之外，用于内燃机的EGR系统具有单独的次级高温冷却回路（44）。 在二次冷却回路（44）中，冷却剂流过位于主废气冷却器（38）上游的二次高温废气冷却器（36）。 大量的热量从废气转移到二级高温冷却回路（44）中的冷却剂中。 高温冷却剂吸收的热量在次级高温散热器（52）中被排斥。 由主冷却剂吸收的热量在主散热器（46）中被排斥。 两个散热器（46,52）占用与传统的单级EGR冷却系统中使用的单个散热器相同量的正面面积，但是总体上向环境吸收更多热量。 在另一种结构中，用于液体冷却内燃机的EGR系统具有单独的废气冷却器（136），该废气冷却器由独立于发动机冷却系统的EGR冷却回路冷却。 EGR冷却回路包括位于主发动机冷却散热器（146）附近的副散热器（152），并且两个散热器（146,152）一起占据与常规单级EGR冷却系统中使用的单个散热器相同的正面区域， 但总体上拒绝更多的热量到环境中。

    Apparatus and method for diagnosing and controlling an ignition system of an internal combustion engine
    6.
    发明公开
    Apparatus and method for diagnosing and controlling an ignition system of an internal combustion engine 有权
    装置和方法用于诊断和内燃发动机的点火系统的测试

    公开(公告)号：EP0922856A3

    公开(公告)日：2001-02-07

    申请号：EP98309910.2

    申请日：1998-12-03

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Tozzi, Luigi P.

    IPC分类号： F02P11/00 ,  F02P17/12

    CPC分类号： F02P17/12 ,  F02D35/021 ,  F02D35/027 ,  F02D41/1498 ,  F02D2200/1015 ,  F02P2017/121 ,  F02P2017/125

    摘要： An apparatus for diagnosing and controlling an ignition system of an internal combustion engine includes an ignition coil controllable by an ignition control circuit, a spark voltage sensor electrically connected to the high tension side of the ignition coil secondary and an ion voltage sensor electrically connected to the low tension side of the ignition coil secondary. A computer processes the spark voltage signal by comparing the signal to a number of predefined spark voltage waveforms in memory. If the spark voltage signal matches any of the spark voltage waveforms in memory that correspond to a predefined ignition system failure mode, a corresponding error code is stored in memory. The computer is further operable to process a voltage peak of the spark voltage, wherein the voltage peak corresponds to the breakdown voltage in the spark gap of a spark plug connected to the secondary coil. If the voltage peak exceeds a peak threshold, or if a slope of the spark voltage waveform about the voltage peak is less than a slope threshold, the computer is operable to store a corresponding error code in memory. The computer is also operable to process the ion voltage signal to determine a combustion quality value and a roughness value therefrom. If the combustion quality factor is outside a predefined range or if the roughness value exceeds a roughness threshold, the computer is operable to adjust engine fueling, spark timing and/or spark energy.

    A method of detecting faults in an air intake heating system for supplying heated air to a vehicle internal combustion engine, and an air intake heating and diagnostic system for use with a vehicle having an internal combustion engine
    8.
    发明公开
    A method of detecting faults in an air intake heating system for supplying heated air to a vehicle internal combustion engine, and an air intake heating and diagnostic system for use with a vehicle having an internal combustion engine 失效
    用于Einlassluftheizvorrichtung车辆内燃机，和Einlassluftheizvorrichtung的错误检测为在车辆中使用的内燃发动机的方法和监控装置

    公开(公告)号：EP0965746A1

    公开(公告)日：1999-12-22

    申请号：EP99117406.1

    申请日：1995-09-21

    申请人： CUMMINS ENGINE COMPANY, INC.

    发明人： Andrews, Eric B. ,  Stepper, Mark, R.

    IPC分类号： F02M31/13 ,  F02N17/04

    CPC分类号： F02N19/06 ,  F02M31/042 ,  F02M31/13 ,  F02N19/04 ,  Y02T10/126

    摘要： An air intake heating and diagnostic system (10) for an internal combustion engine includes a microprocessor based controller (12) for activating electrical heating elements (26 and 28) for a preheat time period prior to starting the engine and for a postheat time period after starting the engine. The controller (12) receives inputs corresponding to intake manifold air temperature, battery temperature, vehicle speed, engine speed, and key switch position. The system (10) continuously monitors the integrity of the various sensors (14,16,18,20), monitors the functionality of the heating elements (26 and 28) during the postheat time period, and warns the vehicle operator by illuminating a "check engine" lamp (38) if certain fault conditions are detected. In both cases, the controller (12) sets fault flags within the controller memory (40) corresponding to the detected fault conditions.

    摘要翻译： 在内燃机的进气加热和诊断系统（10）包括用于启动发动机之前和之后的后加热的时间段激活用于预热时间段电加热元件（26和28）中的基于微处理器的控制器（12） 起动发动机。 所述控制器（12）接收输入对应于进气歧管空气温度，电池温度，车辆速度，发动机速度，和钥匙开关位置。 该系统（10）连续监控各种传感器（14,16,18,20）的完整性，监控对在热后的时间段的加热元件（26和28）的功能，并且通过照射警告车辆操作人员一个“ 检查引擎“灯（38），如果检测到某些故障情况。 在这两种情况下，所述控制器（12）设置对应于检测到的故障条件的故障的控制器存储器（40）内的标志。

    INDUCTION HARDENED MICROALLOY STEEL HAVING ENHANCED FATIGUE STRENGTH PROPERTIES
    9.
    发明公开
    INDUCTION HARDENED MICROALLOY STEEL HAVING ENHANCED FATIGUE STRENGTH PROPERTIES 失效
    感应淬火调质钢具有改进的抗疲劳特性

    公开(公告)号：EP0912769A1

    公开(公告)日：1999-05-06

    申请号：EP97932398.0

    申请日：1997-07-01

    申请人： THE TIMKEN COMPANY ,  CUMMINS ENGINE COMPANY, INC.

    发明人： BURNETT, Michael, E. ,  MUSOLFF, Carl, F.

    IPC分类号： C21D1 ,  C21D9 ,  C22C38

    CPC分类号： C21D1/10 ,  C21D1/18 ,  C21D9/30 ,  C21D2221/00 ,  C22C38/46 ,  Y02P10/253 ,  Y10S148/904

    摘要： Improved fatigue strength properties are achieved in an induction hardened microalloy steel useful for demanding service environments. The microalloy steel has low carbon and sulfur contents, comprising in % by weight, 0.15 % to 0.45 % C, 0.50 % to 1.60 % Mn, up to 0.20 % V, 0.001 % to 0.01 % S, balance Fe. The material is fabricated to a selected configuration, such as an engine crankshaft, for example. Selected surfaces of the fabricated article are hardened by induction heating. The article can be used directly after induction hardening or it may be tempered at low to moderate temperatures of from about 100 °C (200 °F) to 290 °C (550 °F) to achieve a desired surface hardness and compressive residual stress level. The controlled alloy chemistry and low tempering temperature provide a substantial increase in bending fatigue strength over conventional higher carbon grade steels.