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    Fuel control compensation for secondary air system flow variation
    2.
    发明申请
    Fuel control compensation for secondary air system flow variation 有权
    二次空气系统流量变化的燃油控制补偿

    公开(公告)号：US20060042232A1

    公开(公告)日：2006-03-02

    申请号：US10918581

    申请日：2004-08-13

    Applicant: Stephen Fulcher ,  Richard Jess ,  Patrick Risse ,  Stuart Smith ,  James Eng

    Inventor： Stephen Fulcher ,  Richard Jess ,  Patrick Risse ,  Stuart Smith ,  James Eng

    IPC: F01N3/00

    CPC classification number: F02D21/10

    Abstract: An engine control system and method maintains an optimum exhaust fuel to air ratio in an internal combustion engine. A secondary air injection (SAI) pressure is measured in an SAI system. The SAI pressure measurement is converted into an SAI flow value. A fuel compensation value is obtained based on the SAI flow value. Fuel delivery is compensated to the engine based on the fuel compensation value. In a second embodiment, the fuel compensation value is obtained based on the SAI pressure measurement. Fuel delivery is compensated to the engine based on the fuel compensation value. In a third embodiment, a primary flow value is calculated at an air intake of the engine. A fuel compensation value is calculated based on the SAI flow and primary flow values. Fuel delivery to the engine is compensated based on the fuel compensation value.

    Abstract translation: 发动机控制系统和方法在内燃机中保持最佳排气燃料与空气的比例。 在SAI系统中测量二次空气喷射（SAI）压力。 将SAI压力测量值转换为SAI流量值。 基于SAI流量值获得燃料补偿值。 基于燃料补偿值对发动机进行燃料补给。 在第二实施例中，基于SAI压力测量获得燃料补偿值。 基于燃料补偿值对发动机进行燃料补给。 在第三实施例中，在发动机的进气口处计算主流量值。 基于SAI流量和主流量值计算燃料补偿值。 基于燃料补偿值来补偿向发动机的输送。

    VALVE AND FUELING STRATEGY FOR OPERATING A CONTROLLED AUTO-IGNITION FOUR-STROKE INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    VALVE AND FUELING STRATEGY FOR OPERATING A CONTROLLED AUTO-IGNITION FOUR-STROKE INTERNAL COMBUSTION ENGINE 有权
    用于操作控制的自动点火四冲程内燃机的阀和燃油战略

    公开(公告)号：US20060016422A1

    公开(公告)日：2006-01-26

    申请号：US10899456

    申请日：2004-07-26

    Applicant: Tang-Wei Kuo ,  Barry Brown ,  Paul Najt ,  James Eng

    Inventor： Tang-Wei Kuo ,  Barry Brown ,  Paul Najt ,  James Eng

    IPC: F02B3/00

    CPC classification number: F02D13/0215 ,  F02B1/12 ,  F02B2075/027 ,  F02B2075/125 ,  F02D13/0219 ,  F02D13/0265 ,  F02D13/0273 ,  F02D41/3041 ,  F02D41/402 ,  F02M26/01 ,  Y02T10/123 ,  Y02T10/18 ,  Y02T10/44

    Abstract: Part load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through load dependent valve controls and fueling strategies. Optimal fuel economy is achieved by employing negative valve overlap to trap and re-compress combusted gases below a predetermined engine load and employing exhaust gas re-breathing above the predetermined engine load. Split-injection fuel controls are implemented during low and intermediate part load operation whereas a single-injection fuel control is implemented during high part load operation. Split-injections are characterized by lean fuel/air ratios and single-injections are characterized by either lean or stoichiometric fuel/air ratios. Controlled autoignition is thereby enabled through an extended range of engine loads while maintaining acceptable combustion stability and emissions at optimal fuel economy.

    Abstract translation: 受控自动点火四冲程内燃机的零件负载工作点在不影响通过负载相关阀控制和加油策略的燃烧稳定性的同时减少。 通过使用负阀重叠来捕获并重新压缩低于预定发动机负荷的燃烧气体并且使用在预定发动机负载上方重新呼吸的排气来实现最佳燃料经济性。 在低和中间部分负载操作期间实施分体喷射燃料控制，而在高部分负载操作期间实施单次喷射燃料控制。 分离注射的特征在于贫燃料/空气比，单次注射的特征在于稀燃或化学计量的燃料/空气比。 因此，通过扩展的发动机负载范围可实现受控自燃，同时在最佳燃油经济性的同时保持可接受的燃烧稳定性和排放。

    Four stroke engine auto-ignition combustion
    6.
    发明申请
    Four stroke engine auto-ignition combustion 有权
    四冲程发动机自动点火燃烧

    公开(公告)号：US20060005788A1

    公开(公告)日：2006-01-12

    申请号：US11041795

    申请日：2005-01-24

    Applicant: Tang-Wei Kuo ,  James Eng ,  Paul Najt ,  Barry Brown

    Inventor： Tang-Wei Kuo ,  James Eng ,  Paul Najt ,  Barry Brown

    IPC: F02B69/06 ,  F02B75/02 ,  F02M25/07 ,  F02B75/20

    CPC classification number: F02D41/3035 ,  F02B17/005 ,  F02B19/02 ,  F02D13/0207 ,  F02D13/0265 ,  F02D41/402 ,  F02M26/01 ,  Y02T10/125 ,  Y02T10/18 ,  Y02T10/42

    Abstract: A method of operating a four-stroke gasoline direct-injection controlled auto-ignition combustion engine includes opening both the intake and exhaust valves during terminal portions of the expansion strokes and initial portions of the contraction strokes, injecting fuel directly into the combustion chamber for mixing with retained gases and igniting the fuel near the ends of the contraction strokes. In the process, combustion gases are expanded to produce power during major portions of the expansion strokes, combusted gases are blown down into the exhaust outlet and the air inlet and are partially redrawn into the cylinder with fresh air during the terminal portions of the expansion strokes so the air charges are heated by the hot exhaust gases. Portions of the charges re-expelled and the remaining portions of the charges and injected fuel are compressed for ignition of the dilute fuel/air and exhaust gas mixture. Substantial reductions of NOx emissions result from the method.

    Abstract translation: 一种操作四冲程汽油直喷式控制自动点火内燃机的方法包括在膨胀冲程的终端部分和收缩冲程的初始部分中打开进气门和排气门，将燃料直接喷入燃烧室以进行混合 保留气体并点燃收缩行程末端附近的燃料。 在此过程中，燃烧气体在膨胀冲程的主要部分被膨胀以产生动力，燃烧的气体在膨胀冲程的末端部分被吹送到排气出口和空气入口中并被新鲜空气部分重新拉入气缸 所以空气由热废气加热。 电荷部分被重新排出，并且电荷和喷射燃料的剩余部分被压缩以便稀释燃料/空气和废气混合物的点燃。 该方法可大幅度减少NOx排放。

    Method for transition between controlled auto-ignition and spark ignition modes in direct fuel injection engines
    10.
    发明申请
    Method for transition between controlled auto-ignition and spark ignition modes in direct fuel injection engines 有权
    直喷式发动机控制自动点火和火花点火模式之间转换的方法

    公开(公告)号：US20060196466A1

    公开(公告)日：2006-09-07

    申请号：US11367045

    申请日：2006-03-02

    Applicant: Tang-Wei Kuo ,  Zongxuan Sun ,  Jun-Mo Kang ,  James Eng ,  Chen-Fang Chang ,  Barry Brown ,  Paul Najt ,  Man-Feng Chang

    Inventor： Tang-Wei Kuo ,  Zongxuan Sun ,  Jun-Mo Kang ,  James Eng ,  Chen-Fang Chang ,  Barry Brown ,  Paul Najt ,  Man-Feng Chang

    IPC: F02B17/00 ,  F02B5/00 ,  F02M25/07 ,  F01L1/34

    CPC classification number: F01L1/344 ,  F01L13/0015 ,  F02B1/12 ,  F02B17/005 ,  F02D11/10 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0265 ,  F02D41/005 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/402 ,  F02D2041/001 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/42

    Abstract: A method is provided for control of transition between combustion modes of a direct-injection engine operable in a homogeneous charge compression ignition (HCCI) mode at lower loads and a spark ignition flame propagation (SI) mode at higher loads. The engine includes a variable valve actuation system including two-step high and low lift valve actuation and separate cam phasing for both intake and exhaust valves. The method includes operating the engine at steady state, with fuel-air-exhaust gas mixtures at predetermined conditions, for each speed and load, and controlling the engine during mode changes between the HCCI mode and the SI mode by switching the exhaust and intake valves between low lift for HCCI operation and high lift for SI operation. High load may be an SI throttled mode with an intermediate unthrottled mode (SI/NTLC} in which transition between HCCI and SI/NTLC modes requires switching only the exhaust valve lift and transition between SI/NTLC and SI throttled modes requires switching only the intake valve lift, with predetermined phase adjustments in the valve timing phasing.

    Abstract translation: 提供了一种用于控制在较低负载下以均质充气压缩点火（HCCI）模式操作的直喷式发动机的燃烧模式之间的过渡和在较高负载下的火花点火火焰传播（SI）模式下的过渡的方法。 发动机包括可变气门驱动系统，其包括两步高和低升程气门致动以及用于进气门和排气门的单独的凸轮定相。 该方法包括：对于每个速度和负载，在预定条件下以稳定状态操作发动机，并且在HCCI模式和SI模式之间的模式转换期间通过切换排气和进气门来控制发动机 在HCCI操作的低电梯和SI操作的高电梯之间。 高负载可能是具有中间非节流模式（SI / NTLC）的SI节流模式，其中HCCI和SI / NTLC模式之间的转换只需要切换排气门升程，SI / NTLC和SI节流模式之间的转换只需要切换进气 气门升程，在气门正时相定相调整。

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