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11. 发明授权

US07275514B2 Method of HCCI and SI combustion control for a direct injection internal combustion engine 有权
标题翻译：直喷式内燃机的HCCI和SI燃烧控制方法
公开(公告)号：US07275514B2
公开(公告)日：2007-10-02
申请号：US11386203
申请日：2006-03-22
申请人： Tang-Wei Kuo , Zongxuan Sun , James A. Eng , Barry L. Brown , Paul M. Najt , Jun-Mo Kang , Chen-Fang Chang , Man-Feng Chang
发明人： Tang-Wei Kuo , Zongxuan Sun , James A. Eng , Barry L. Brown , Paul M. Najt , Jun-Mo Kang , Chen-Fang Chang , Man-Feng Chang
IPC分类号： F02B5/00 , F01L1/34 , F02M25/07
CPC分类号： F02D13/0261 , F01L13/00 , F02B1/12 , F02B17/00 , F02B2075/125 , F02D13/0203 , F02D13/0207 , F02D13/0265 , F02D13/0273 , F02D35/023 , F02D35/028 , F02D41/0002 , F02D41/0052 , F02D41/006 , F02D41/3035 , F02D41/3064 , F02D41/402 , F02D2041/001 , F02M26/01 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要： The present invention relates to methods for robust controlled auto-ignition and spark ignited combustion controls in gasoline direct-injection engines, including transients, using either exhaust re-breathing or a combination of exhaust re-compression and re-breathing valve strategy. These methods are capable of enabling engine operation with either lean of stoichiometric or stoichiometric air/fuel ratio for oxides of nitrogen (NOx) control, with varying exhaust gas recirculation (EGR) rates and throttle valve positions for knock control, and with a combination of homogeneous charge compression ignition (HCCI) and spark ignition (SI) combustion modes to optimize fuel economy over a wide range of engine operating conditions.
摘要翻译：本发明涉及用于汽油直喷发动机中稳健的受控自动点火和火花点火燃烧控制的方法，包括使用排气再呼吸或排气再压缩和再呼吸阀策略的组合的瞬变。这些方法能够实现发动机运行，其中氮气（NOx）控制的氧化物的化学计量或化学计量空气/燃料比为贫，具有改变的废气再循环（EGR）速率和用于爆震控制的节气门位置，以及均质充气压缩点火（HCCI）和火花点火（SI）燃烧模式，以在广泛的发动机运行条件下优化燃油经济性。

12. 发明授权

US07246597B2 Method and apparatus to operate a homogeneous charge compression-ignition engine 有权
标题翻译：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。

13. 发明申请

US20070107692A1 Method and apparatus to operate a homogeneous charge compression-ignition engine 有权
公开(公告)号：US20070107692A1
公开(公告)日：2007-05-17
申请号：US11398776
申请日：2006-04-06
申请人： Tang-Wei Kuo , Paul Najt , James Eng , Rodney Rask
发明人： Tang-Wei Kuo , Paul Najt , James Eng , Rodney Rask
IPC分类号： F02B5/00 , F02M7/00
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.

14. 发明申请

US20070084449A1 Method to improve combustion stability in a controlled auto-ignition combustion engine 有权
标题翻译：改善受控自动点火内燃机燃烧稳定性的方法
公开(公告)号：US20070084449A1
公开(公告)日：2007-04-19
申请号：US11399640
申请日：2006-04-06
申请人： Paul Najt , Tang-Wei Kuo , James Eng , Rodney Rask
发明人： Paul Najt , Tang-Wei Kuo , James Eng , Rodney Rask
IPC分类号： F02B75/08 , F02F3/26 , F02B5/00
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 / K 3 -K至2.0×10 -6 / V范围内的热容的热参数 > J / m 3 -K; 在0.25W / m-K至2.5W / m-K的范围内的热导率; 并且在1×10 -7 / 2至8×10 -6 / 2范围内的热扩散率 / s。

15. 发明申请

US20060196467A1 Load transient control methods for direct-injection engines with controlled auto-ignition combustion 有权
标题翻译：对具有可控自动点火燃烧的直喷发动机的负载瞬态控制方法
公开(公告)号：US20060196467A1
公开(公告)日：2006-09-07
申请号：US11366217
申请日：2006-03-02
申请人： Jun-Mo Kang , Chen-Fang Chang , Zongxuan Sun , Tang-Wei Kuo , James Eng , Barry Brown , Paul Najt , Man-Feng Chang
发明人： Jun-Mo Kang , Chen-Fang Chang , Zongxuan Sun , Tang-Wei Kuo , James Eng , Barry Brown , Paul Najt , Man-Feng Chang
IPC分类号： F02B5/00 , F02M51/00 , F02B47/08
CPC分类号： F02B47/08 , F02B1/12 , F02B23/101 , F02B2075/125 , F02B2275/14 , F02D9/02 , F02D13/0215 , F02D13/0219 , F02D13/0265 , F02D41/0052 , F02D41/006 , F02D41/0065 , F02D41/107 , F02D41/126 , F02D41/3035 , F02D41/3064 , F02D41/402 , F02D2041/001 , F02D2041/141 , F02D2200/0614 , F02M26/01 , F02M26/13 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/47
摘要： A direct injection controlled auto-ignition engine is operated at steady state, within a homogeneous charge compression-ignition (HCCI) load range and with fuel-air-diluent mixtures at predetermined conditions, for each speed and load, of engine control inputs, including at least fueling mass flow rate, injection timing (FI), spark timing (SI) and exhaust recompression obtained by negative valve overlap (NVO). During load change rates below a predetermined threshold, SI, FI and NVO change rates are synchronized to current changes in the fueling mass flow rate. For fast load increases above the threshold, the cylinder charge is temporarily enriched by increasing the percentage of residual gas or reducing the percentage of fresh air mass in the charge sufficiently to maintain auto-ignition temperature during the load change. This may be done by delaying NVO action for a predetermined speed-dependent number of engine cycles. At very low loads, stable fuel rate reduction may require an alternate method involving deceleration fuel cut-off followed by a step change during refire.
摘要翻译：直喷式控制自动点火发动机在均匀充气压缩点火（HCCI）负载范围内以及燃料 - 空气 - 稀释剂混合物在预定条件下对于发动机控制输入的每个速度和负载运行，包括至少燃料质量流量，喷射正时（FI），火花正时（SI）和通过负阀重叠获得的排气再压缩（NVO）。在负载变化率低于预定阈值时，SI，FI和NVO变化率与加油质量流量当前的变化同步。对于快速负载增加超过阈值，通过增加残余气体的百分比或减少充电中的新鲜空气质量百分比来充分地保持气缸充量，以在负载变化期间保持自燃温度，从而暂时增加气瓶充量。这可以通过将NVO动作延迟到预定的速度相关数量的发动机循环来完成。在非常低的负载下，稳定的燃油速率降低可能需要一种替代方法，包括减速燃料切断，然后在重新启动期间改变阶跃。

16. 发明授权

US07080613B2 Method for auto-ignition combustion control 有权
公开(公告)号：US07080613B2
公开(公告)日：2006-07-25
申请号：US10981971
申请日：2004-11-05
申请人： Tang-Wei Kuo , James A. Eng , Barry L. Brown
发明人： Tang-Wei Kuo , James A. Eng , Barry L. Brown
IPC分类号： F02B75/02 , F01L1/34 , F02M27/07 , F02B3/00 , F02B15/00
CPC分类号： F02D13/0207 , F01L13/0015 , F02B1/12 , F02B17/005 , F02B23/101 , F02B2023/108 , F02B2075/125 , F02D13/0246 , F02D13/0253 , F02D13/0265 , F02D13/0273 , F02D41/0002 , F02D41/006 , F02D41/008 , F02D41/3035 , F02D2041/001 , F02D2041/002 , F02M26/01 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/47
摘要： A method is disclosed for controlling the air-fuel ratio in a four-stroke gasoline direct-injection controlled auto-ignition combustion. The engine is operated with two sequential pairs of expansion and contraction strokes during two revolutions of the engine crank, the two revolutions defining a combustion cycle. A system is employed for variably actuating the intake and exhaust valves and adjusting the flow of air and burned gases entering the combustion chamber. Adjusting the flow affects the resulting air-fuel ratio in the combustion chamber. 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. Either valve strategy affects the air-fuel ratio in the cylinder and causes a proportion of burned gases from previous combustion cycles to be retained in the cylinder to provide the necessary conditions for auto-ignition of the air-fuel mixture.

17. 发明授权

US07059281B2 Four stroke engine auto-ignition combustion 有权
公开(公告)号：US07059281B2
公开(公告)日：2006-06-13
申请号：US11041795
申请日：2005-01-24
申请人： Tang-Wei Kuo , James A. Eng , Paul M. Najt , Barry L. Brown
发明人： Tang-Wei Kuo , James A. Eng , Paul M. Najt , Barry L. Brown
IPC分类号： F02B75/02 , F02B75/12 , F02M25/07
CPC分类号： F02D41/3035 , F02B17/005 , F02B19/02 , F02D13/0207 , F02D13/0265 , F02D41/402 , F02M26/01 , Y02T10/125 , Y02T10/18 , Y02T10/42
摘要： 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.

18. 发明申请

US20120118266A1 METHOD AND APPARATUS FOR CONTROLLING SPARK TIMING IN AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：在内燃机中控制火花时间的方法和装置
公开(公告)号：US20120118266A1
公开(公告)日：2012-05-17
申请号：US12947103
申请日：2010-11-16
申请人： Xiaofeng Yang , Wenbo Wang , Tang-Wei Kuo , Jeffrey M. Kaiser , Chao F. Daniels
发明人： Xiaofeng Yang , Wenbo Wang , Tang-Wei Kuo , Jeffrey M. Kaiser , Chao F. Daniels
IPC分类号： F02P5/00
CPC分类号： F02P5/04 , F02D35/028 , F02D41/1497 , F02D2200/1002
摘要： A method for operating a spark-ignition internal combustion engine includes controlling spark ignition timing responsive to a combustion charge flame speed corresponding to an engine operating point and a commanded air/fuel ratio associated with an operator torque request.
摘要翻译：用于操作火花点火式内燃机的方法包括根据对应于发动机工作点的燃烧充气火焰速度和与操作者扭矩请求相关联的命令空气/燃料比来控制火花点火正时。

19. 发明授权

US07742868B2 Method and apparatus for controlling fuel reforming under low-load operating conditions using exhaust recompression in a homogeneous charge compression ignition engine 有权
标题翻译：在均质充气压缩点火发动机中使用排气再压缩来控制在低负载运行条件下的燃料重整的方法和装置
公开(公告)号：US07742868B2
公开(公告)日：2010-06-22
申请号：US12045295
申请日：2008-03-10
申请人： Jun-Mo Kang , Chen-Fang Chang , Tang-Wei Kuo
发明人： Jun-Mo Kang , Chen-Fang Chang , Tang-Wei Kuo
IPC分类号： G06F19/00 , F02M51/00 , F02M25/07 , F01L1/34 , F02D41/14
CPC分类号： F02D41/3035 , F02B1/12 , F02D13/0265 , F02D19/024 , F02D19/084 , F02D41/0052 , F02D41/006 , F02D41/1458 , F02D41/187 , F02D41/403 , F02D2041/001 , F02M21/0206 , F02M21/0215 , F02M21/0275 , Y02T10/128 , Y02T10/18 , Y02T10/32 , Y02T10/36 , Y02T10/44 , Y02T10/47
摘要： A direct injection spark ignition multi-cylinder internal combustion engine operative in a controlled auto-ignition combustion mode includes a direct fuel injection system, a spark ignition system and a controllable engine valve system. The air/fuel ratio in the exhaust gas feedstream and an intake mass air flow are measured and an actual air/fuel ratio is calculated based upon the intake mass air flow and engine fueling. Magnitude of a negative valve overlap period between an exhaust valve closing and an intake valve opening is adjusted based upon the measured mass air flow. Timing of pre-injection fueling is adjusted during the negative valve overlap period based upon the measured air/fuel ratio.
摘要翻译：在受控自动点火燃烧模式下操作的直喷式火花点火多气缸内燃机包括直接燃料喷射系统，火花点火系统和可控发动机气门系统。测量废气进料流中的空气/燃料比和进气质量空气流量，并且基于进气质量空气流量和发动机加油计算实际空气/燃料比。基于测量的质量空气流量来调节排气门关闭和进气门开度之间的负阀重叠周期的大小。基于测量的空气/燃料比，在负气门重叠期间调节预喷射加油的时间。

20. 发明申请

US20090164104A1 METHOD TO ENCHANCE LIGHT LOAD HCCI COMBUSTION CONTROL USING MEASUREMENT OF CYLINDER PRESSURES 有权
标题翻译：使用气缸压力测量来加速轻负荷燃烧控制的方法
公开(公告)号：US20090164104A1
公开(公告)日：2009-06-25
申请号：US12338028
申请日：2008-12-18
申请人： Nicole Wermuth , Tang-Wei Kuo , Paul M. Najt
发明人： Nicole Wermuth , Tang-Wei Kuo , Paul M. Najt
IPC分类号： F02D41/30
CPC分类号： F02D41/3035 , F02B1/12 , F02B23/104 , F02B2075/125 , F02D13/0207 , F02D13/0219 , F02D13/0265 , F02D19/0689 , F02D19/084 , F02D35/023 , F02D41/006 , F02D41/3041 , F02D41/402 , F02D2041/001 , F02M26/01 , F02M26/21 , Y02T10/123 , Y02T10/128 , Y02T10/18 , Y02T10/36
摘要： A method for controlling an amount of fuel reforming in an internal combustion engine configured to selectively operate in a homogeneous charge compression-ignition combustion mode with an exhaust recompression strategy includes monitoring in-cylinder pressures during a current combustion cycle, utilizing the monitored in-cylinder pressures to project reforming required in a next combustion cycle, and controlling the next combustion cycle based on the projected reforming required in the next combustion cycle.
摘要翻译：一种用于控制内燃机中的燃料重整量的方法，其配置为选择性地以排气再压缩策略在均质充气压缩点火燃烧模式下操作，包括在当前燃烧循环期间监测缸内压力，利用监测的缸内在下一个燃烧循环中需要进行改造的压力，以及基于下一个燃烧循环中所需的预计重整来控制下一个燃烧循环。

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