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31 条记录 (耗时 0.031 秒)

    Method for mid load operation of auto-ignition combustion
    4.
    发明授权
    Method for mid load operation of auto-ignition combustion 有权
    自动点火燃烧中负荷运行方法

    公开(公告)号：US07128062B2

    公开(公告)日：2006-10-31

    申请号：US11064320

    申请日：2005-02-23

    申请人： Tang-Wei Kuo ,  Paul M. Najt ,  James A. Eng ,  Junseok Chang ,  Zoran S. Filipi ,  Dionissios N. Assanis ,  Orgun A. Guralp

    发明人： Tang-Wei Kuo ,  Paul M. Najt ,  James A. Eng ,  Junseok Chang ,  Zoran S. Filipi ,  Dionissios N. Assanis ,  Orgun A. Guralp

    IPC分类号： F02M25/07 ,  F02B3/08 ,  F02B75/10 ,  G06F19/00

    CPC分类号： F02D13/0207 ,  F02B1/12 ,  F02B23/101 ,  F02B31/085 ,  F02B2023/108 ,  F02B2075/125 ,  F02D13/0246 ,  F02D13/0273 ,  F02D41/3035 ,  F02M26/01 ,  Y02T10/123 ,  Y02T10/18

    摘要： A method is disclosed for expanding the mid load range of a four-stroke gasoline direct-injection controlled auto-ignition combustion engine. The engine includes at least one cylinder containing a piston reciprocably connected with a crank and defining a variable volume combustion chamber including an intake valve controlling communication with an air intake and an exhaust valve controlling communication with an exhaust outlet. A system is employed for variably actuating the intake and exhaust valves. The valve actuating system is employable to operate the intake and exhaust valves with an exhaust re-compression or an exhaust re-breathing valve strategy. A reservoir chamber in communication with the combustion chamber is provided for temporary holding of residual burned gas. Residual burned gas in the combustion chamber and the exhaust outlet enters into the reservoir chamber and then loses thermal energy while in the reservoir chamber before being drawn back into the combustion chamber.

    摘要翻译： 公开了一种用于扩大四冲程汽油直喷式控制自点火内燃机的中间载荷范围的方法。 发动机包括至少一个缸体，该缸体包括与曲柄往复运动的活塞，并且限定可变体积燃烧室，该燃烧室包括控制与进气口连通的进气门和控制与排气出口连通的排气门。 采用系统来可变地致动进气门和排气门。 阀致动系统可用于利用排气再压缩或排气再呼吸阀策略操作进气门和排气门。 提供与燃烧室连通的储存室用于暂时保持残留的燃烧气体。 燃烧室中的残余燃烧气体和排气出口进入储存室，然后在被抽回燃烧室之前在储存室中失去热能。

    Method to improve combustion stability in a controlled auto-ignition combustion engine
    5.
    发明授权
    Method to improve combustion stability in a controlled auto-ignition combustion engine 有权
    改善受控自动点火内燃机燃烧稳定性的方法

    公开(公告)号：US07802553B2

    公开(公告)日：2010-09-28

    申请号：US11399640

    申请日：2006-04-06

    申请人： Paul M. Najt ,  Tang-Wei Kuo ,  James A. Eng ,  Rodney B. Rask

    发明人： Paul M. Najt ,  Tang-Wei Kuo ,  James A. Eng ,  Rodney B. Rask

    IPC分类号： F02B51/02

    CPC分类号： F02F3/14 ,  F01L3/04 ,  F01L2101/02 ,  F01L2103/00 ,  F02B1/12 ,  F02B77/02 ,  F05C2251/04 ,  F05C2251/048 ,  Y02T10/128

    摘要： A method to control combustion in an HCCI engine, to mitigate effects of combustion chamber deposits is detailed. The method comprises applying a specific surface coating to a combustion chamber surface. The surface coating has thermal properties substantially similar to the combustion chamber deposits. The thermal properties preferably include a) thermal conductivity, b) heat capacity, and c) thermal diffusivity. Applying a surface coating results in a reduction of combustion variability due to variation in combustion chamber deposits, and an improvement on combustion stability at low loads due to reduced heat loss. A preferred thermally insulating surface coating includes thermal parameters of a heat capacity in a range of 0.03×106 J/m3-K to 2.0×106 J/m3-K; a thermal conductivity in a range of 0.25 W/m-K to 2.5 W/m-K; and, a thermal diffusivity in a range of 1×10−7 m2/s to 8×10−6 m2/s.

    摘要翻译： 详细描述了一种控制HCCI发动机燃烧的方法，以减轻燃烧室沉积物的影响。 该方法包括将特定的表面涂层施加到燃烧室表面。 表面涂层具有与燃烧室沉积物基本相似的热性质。 热性质优选包括a）热导率，b）热容量，和c）热扩散率。 施加表面涂层导致由于燃烧室沉积物的变化而导致的燃烧变异性的降低，以及由于热损失减少而在低负载下的燃烧稳定性的改善。 优选的绝热表面涂层包括在0.03×10 6 J / m 3 -K至2.0×10 6 J / m 3 -K范围内的热容的热参数; 在0.25W / m-K至2.5W / m-K的范围内的热导率; 并且在1×10 -7 m 2 / s至8×10 -6 m 2 / s的范围内的热扩散率。

    Method and apparatus to operate a homogeneous charge compression-ignition engine
    6.
    发明授权
    Method and apparatus to operate a homogeneous charge compression-ignition engine 有权
    操作均质充气压缩点火发动机的方法和装置

    公开(公告)号：US07246597B2

    公开(公告)日：2007-07-24

    申请号：US11398776

    申请日：2006-04-06

    申请人： Tang-Wei Kuo ,  Paul M. Najt ,  James A. Eng ,  Rodney B. Rask

    发明人： Tang-Wei Kuo ,  Paul M. Najt ,  James A. Eng ,  Rodney B. Rask

    IPC分类号： F02B9/04

    CPC分类号： F02D41/3035 ,  F02B1/12 ,  F02B23/0672 ,  F02D13/0234 ,  F02D35/02 ,  F02D35/028 ,  F02D41/005 ,  F02D41/1467 ,  F02D2041/001 ,  Y02T10/125 ,  Y02T10/128 ,  Y02T10/18

    摘要： A method and apparatus for controlling engine operation to compensate for effects of combustion chamber deposits (CCDs) on combustion in a controlled auto-ignition engine is presented. Control methodologies comprise operation of variable valve actuation, fuel injection, spark timing, and intake air and coolant temperature to dynamically compensate for the effect of CCDs. A sensitivity to core gas temperature and chamber wall thermal conditions is shown, which is correlatable to in-cylinder CCD formation. Intake charge or coolant temperature control can be used to compensate for CCD effects. An engine control scheme relies upon a parametric input that quantifies instantaneous CCD formation in the combustion chamber. The result is further applicable to control pre-ignition in a conventional spark-ignition engine.

    摘要翻译： 提出了一种用于控制发动机操作以补偿燃烧室沉积物（CCD）对受控自动点火发动机燃烧的影响的方法和装置。 控制方法包括可变阀致动，燃料喷射，火花正时以及进气和冷却剂温度的操作，以动态补偿CCD的影响。 显示了对核心气体温度和室壁热条件的敏感性，这与缸内CCD形成有关。 进气充液或冷却液温度控制可用于补偿CCD效应。 发动机控制方案依赖于量化燃烧室中瞬时CCD形成的参数输入。 结果进一步适用于在常规火花点火发动机中控制预点火。

    Method for mid load operation of auto-ignition combustion
    8.
    发明授权
    Method for mid load operation of auto-ignition combustion 有权
    自动点火燃烧中负荷运行方法

    公开(公告)号：US06994072B2

    公开(公告)日：2006-02-07

    申请号：US10997661

    申请日：2004-11-24

    申请人： Tang-Wei Kuo ,  Barry L. Brown ,  James A. Eng ,  Paul M. Najt

    发明人： Tang-Wei Kuo ,  Barry L. Brown ,  James A. Eng ,  Paul M. Najt

    IPC分类号： F02B17/00

    CPC分类号： F02D41/3047 ,  F02B1/12 ,  F02B17/005 ,  F02B23/101 ,  F02B2075/125 ,  F02D13/0207 ,  F02D13/0242 ,  F02D13/0265 ,  F02D13/0273 ,  F02D41/006 ,  F02D41/402 ,  F02D2041/001 ,  F02M26/01 ,  F02M26/13 ,  Y02T10/123 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/47

    摘要： A method is disclosed for expanding the mid load operation limit in a four-stroke gasoline direct-injection controlled auto-ignition combustion engine. A system is employed for variably actuating the intake and exhaust valves and for operating the valves with an exhaust re-compression or exhaust re-breathing valve strategy. A spark plug is provided. A fuel injector having multiple injection capability is employed. A first fuel charge is injected into the combustion chamber to form a lean air-fuel mixture. A second fuel charge is injected into the combustion chamber to form a stratified air-fuel mixture having an ignitable mixture located near the spark plug. The ignitable mixture is ignited at the spark gap, thereby causing spark-ignition combustion that causes a sufficient increase in chamber pressure and temperature to trigger auto-ignition of the lean air-fuel mixture, resulting in the obtaining of a higher engine load before a pressure rise rate in the combustion chamber exceeds a prescribed threshold value.

    摘要翻译： 公开了一种用于扩大四冲程汽油直喷式自动点火内燃机的中负荷运行极限的方法。 采用系统来可变地致动进气门和排气门，并且用排气再压缩或排气再呼吸阀策略操作阀。 提供火花塞。 采用具有多个喷射能力的燃料喷射器。 将第一燃料装料注入到燃烧室中以形成稀薄的空气 - 燃料混合物。 第二燃料装料被注入到燃烧室中以形成具有位于火花塞附近的可燃混合物的分层空气 - 燃料混合物。 可点燃的混合物在火花隙处点燃，从而引起火花点火燃烧，导致室压力和温度的充分增加，以引起稀空燃混合物的自动点火，导致在一个 燃烧室内的压力上升率超过规定的阈值。