公开(公告)号：US06491754B1

公开(公告)日：2002-12-10

申请号：US09593984

申请日：2000-06-13

Applicant: Edwin X. Graf ,  James A. Eng

Inventor： Edwin X. Graf ,  James A. Eng

IPC: B05C1104

CPC classification number: B05C11/041 ,  B05C11/045

Abstract: An apparatus for one of direct and indirect application of a coating medium onto a traveling fiber material web includes at least one doctor element for application and/or metering of the coating medium. At least one doctor element is formed of a carbon fiber material.

Abstract translation: 用于将涂覆介质直接和间接施加到行进纤维材料纤维网上的设备包括用于施涂和/或计量涂布介质的至少一个刮板元件。 至少一个刮刀元件由碳纤维材料形成。

公开(公告)号：US06284103B1

公开(公告)日：2001-09-04

申请号：US09358775

申请日：1999-07-21

Applicant: James A. Eng ,  Peter T. Hunnicutt ,  Edwin X. Graf

Inventor： James A. Eng ,  Peter T. Hunnicutt ,  Edwin X. Graf

IPC: D21F310

CPC classification number: D21F3/105

Abstract: A method of manufacturing a suction roll shell for use in a paper-making machine utilizes a mandrel with a length and a cross-sectional area corresponding to the shell. The mandrel has a plurality of generally radially extending holes. A plurality of pins are placed in the holes, with each pin extending radially outward from the shell a distance greater than a desired thickness of the shell. At least one elongate fiber is wound around the mandrel to form the shell with the desired thickness. The pins are removed from the mandrel and the shell.

Abstract translation: 制造用于造纸机的吸辊壳的方法利用具有对应于壳体的长度和横截面面积的心轴。 心轴具有多个大致径向延伸的孔。 多个销被放置在孔中，每个销从壳体径向向外延伸一个大于壳体所需厚度的距离。 至少一根细长的纤维缠绕在心轴上以形成具有所需厚度的壳体。 销从心轴和壳体上移除。

公开(公告)号：US07802553B2

公开(公告)日：2010-09-28

申请号：US11399640

申请日：2006-04-06

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

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

IPC: F02B51/02

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07370616B2

公开(公告)日：2008-05-13

申请号：US11367045

申请日：2006-03-02

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

Inventor： Tang-Wei Kuo ,  Zongxuan Sun ,  Jun-Mo Kang ,  James A. Eng ,  Chen-Fang Chang ,  Barry L. Brown ,  Paul M. 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。

公开(公告)号：US07367308B2

公开(公告)日：2008-05-06

申请号：US11367050

申请日：2006-03-02

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

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

IPC: F02D43/00

CPC classification number: F02D41/402 ,  F02B1/12 ,  F02B23/101 ,  F02B2075/125 ,  F02D9/02 ,  F02D13/0265 ,  F02D41/0002 ,  F02D41/0052 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/144 ,  F02D41/3035 ,  F02D41/3047 ,  F02D41/3064 ,  F02M26/01 ,  F02M26/13 ,  Y02T10/123 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/47

Abstract: A method is provided for control of a direct-injection engine operated with controlled auto-ignition (HCCI) during load transient operations between modes of lean combustion low load (HCCI/Lean) and stiochiometric combustion medium load (HCCI/Stoich.). The method includes 1) operating the engine at steady state, within a homogeneous charge compression-ignition (HCCI) load range, with fuel-air-exhaust gas mixtures at predetermined conditions, for each speed and load, and controlling the engine during changes of operating mode between one to another of the HCCI/Stoich. medium load mode and the HCCI/Lean lower load mode by synchronizing change rates of predetermined controlled inputs to the current engine fueling change rate.

Abstract translation: 提供了一种用于控制在稀燃燃烧低负载（HCCI / Lean）和诊断燃烧介质载荷（HCCI / Stoich）的模式之间的负载瞬变操作期间用受控自动点火（HCCI）操作的直接喷射发动机的方法。 该方法包括：1）在均匀充气压缩点火（HCCI）负载范围内，对于每个速度和负载，在预定条件下，以燃料 - 空气 - 废气混合物在稳定状态下操作发动机，以及在发动机变化期间控制发动机 HCCI / Stoich之间的操作模式。 通过将预定的受控输入的变化速率与当前的发动机加油变化率进行同步，来实现中负载模式和HCCI /精益低负荷模式。

公开(公告)号：US07275514B2

公开(公告)日：2007-10-02

申请号：US11386203

申请日：2006-03-22

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

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

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

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07246597B2

公开(公告)日：2007-07-24

申请号：US11398776

申请日：2006-04-06

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

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

IPC: F02B9/04

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07080613B2

公开(公告)日：2006-07-25

申请号：US10981971

申请日：2004-11-05

Applicant: Tang-Wei Kuo ,  James A. Eng ,  Barry L. Brown

Inventor： Tang-Wei Kuo ,  James A. Eng ,  Barry L. Brown

IPC: F02B75/02 ,  F01L1/34 ,  F02M27/07 ,  F02B3/00 ,  F02B15/00

CPC classification number: 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

Abstract: 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.

公开(公告)号：US07059281B2

公开(公告)日：2006-06-13

申请号：US11041795

申请日：2005-01-24

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

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

IPC: F02B75/02 ,  F02B75/12 ,  F02M25/07

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.

公开(公告)号：US06368458B1

公开(公告)日：2002-04-09

申请号：US09534933

申请日：2000-03-24

Applicant: Edwin X. Graf ,  James A. Eng

Inventor： Edwin X. Graf ,  James A. Eng

IPC: B30B304

CPC classification number: D21G1/00 ,  D21G1/0026 ,  D21G1/004 ,  D21G1/0286

Abstract: A calender press for use in a paper-making machine includes a top roll positioned adjacent to a nip and rotatable about a longitudinal axis thereof. The top roll has a length and circumferential perimeter. The length extends in the direction of and is longer than the width of the fiber web. The top roll is thermally compensated in a plurality of thermal zones which are adjacent to each other across the length of the top roll, whereby the perimeter of the top roll may be adjusted in a locally adjustable manner toward and away from the nip. A bottom roll is positioned adjacent to the top roll and defines the nip with the top roll. The bottom roll is rotatable about a longitudinal axis thereof and has a length and circumferential perimeter. The length extends in the direction of and is longer than the width of the fiber web. The perimeter is smaller at each longitudinal end of the bottom roll and larger at approximately a midpoint between the longitudinal ends, thereby defining a crowned bottom roll. The bottom roll is thermally compensated in a plurality of thermal zones which are adjacent to each other across the length of the bottom roll, whereby the perimeter of the bottom roll may be adjusted in a locally adjustable manner toward and away from the nip. The thermal compensation of the bottom roll and the top roll coact to effect a nip load of less than approximately 150 pounds per linear inch between the top roll and bottom roll.

Abstract translation: 用于造纸机的压延机包括邻近辊隙定位并可围绕其纵向轴线旋转的顶辊。 顶辊具有长度和圆周周长。 该长度在纤维网的宽度方向上延伸并且长于纤维网的宽度。 上辊在多个热区中被热补偿，多个热区在顶辊的长度上彼此相邻，由此顶辊的周边可以以局部可调节的方式朝向和远离辊隙进行调节。 底辊定位成与顶辊相邻并且与顶辊限定压区。 底辊可以围绕其纵向轴线旋转并且具有长度和圆周周长。 该长度在纤维网的宽度方向上延伸并且长于纤维网的宽度。 周边在底辊的每个纵向端处较小，并且在纵向端部之间的大致中点处较大，由此限定顶部的底部辊。 底辊在多个热区域中被热补偿，多个热区域在底辊的长度上彼此相邻，由此底辊的周边可以以局部可调节的方式朝向和远离辊隙进行调节。 底辊和顶辊的热补偿共同作用以在顶辊和底辊之间实现小于约150磅/线性英寸的辊隙负荷。