公开(公告)号：US20070068158A1

公开(公告)日：2007-03-29

申请号：US11239553

申请日：2005-09-28

申请人： Harold Sun ,  Richard Baker ,  John Vanderslice ,  Jeffrey Schneyer ,  William Ruona

发明人： Harold Sun ,  Richard Baker ,  John Vanderslice ,  Jeffrey Schneyer ,  William Ruona

IPC分类号： F02B33/44

CPC分类号： F02B37/013 ,  F02B37/004 ,  F02B37/12 ,  F02B37/16 ,  F02B37/18 ,  F02B37/24 ,  Y02T10/144

摘要： A method for controlling an engine having an intake manifold and an exhaust manifold, where an exhaust gas recirculation path with a valve is provided between said intake and exhaust manifold, and the engine has a turbocharger; the method comprising during at least one decreased engine output condition, increasing opening of the exhaust gas recirculation valve and adjusting exhaust expansion through a turbine of the turbocharger to decrease expansion through the turbocharger and thereby reduce a likelihood of turbocharger surge.

摘要翻译： 一种用于控制具有进气歧管和排气歧管的发动机的方法，其中在所述进气歧管和排气歧管之间设置有带有阀的废气再循环路径，并且所述发动机具有涡轮增压器; 所述方法包括在至少一个减少的发动机输出状态期间，增加排气再循环阀的打开并调节通过涡轮增压器的涡轮机的排气膨胀，以减小通过涡轮增压器的膨胀，从而降低涡轮增压器浪涌的可能性。

公开(公告)号：US20050045163A1

公开(公告)日：2005-03-03

申请号：US10961005

申请日：2004-10-07

申请人： Eric Kurtz ,  John Vanderslice

发明人： Eric Kurtz ,  John Vanderslice

IPC分类号： F02B1/12 ,  F02B3/06 ,  F02B23/06 ,  F02B29/04 ,  F02D41/00 ,  F02D41/40 ,  F02M25/07 ,  F02B33/44 ,  F02B47/08

CPC分类号： F02D41/005 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0696 ,  F02B29/0406 ,  F02B2275/14 ,  F02D41/0065 ,  F02D41/402 ,  F02D41/403 ,  F02M26/05 ,  F02M26/06 ,  F02M26/07 ,  F02M26/24 ,  F02M26/28 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/44 ,  Y02T10/47

摘要： The present invention is a dual-stage fuel injection strategy for compression ignition engines in which 15-40% of the fuel is injected into the combustion chamber no later than about −20 to −30 CA ATDC and as early as IVC. The remaining fuel is then injected in one or more fuel pulses, none of which start before about −20 to −30 CA ATDC. The fuel injected early in the compression stroke forms a lean mixture that burns with low soot and low NOx emissions. The combustion of that fuel serves to increase in-cylinder temperature such that the ignition delay of subsequent fuel injection pulses is short. This mode is utilized when it is predicted that a NOx spike is imminent. Various other alternative methods for reducing NOx spikes are also disclosed such as specialized EGR systems that can provide EGR with low manifold vacuum.

摘要翻译： 本发明是一种用于压缩点火发动机的双级燃料喷射策略，其中15-40％的燃料不晚于约-20至-30CA ATDC并且早于IVC被注入到燃烧室中。 然后将剩余的燃料以一个或多个燃料脉冲喷射，其中没有一个在约-20至-30CA ATDC之前开始。 在压缩冲程早期喷射的燃料形成燃烧的低烟炱和低NOx排放的稀混合物。 该燃料的燃烧用于增加缸内温度，使得随后的燃料喷射脉冲的点火延迟较短。 当预测NOx尖峰即将到来时，利用该模式。 还公开了用于减少NOx尖峰的各种其它替代方法，例如可以提供低歧管真空的EGR的专用EGR系统。

公开(公告)号：US06167698A

公开(公告)日：2001-01-02

申请号：US09468499

申请日：1999-12-21

申请人： Edward Thomas King ,  John Vanderslice

发明人： Edward Thomas King ,  John Vanderslice

IPC分类号： F01N300

CPC分类号： F01N3/2066 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0807 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/08 ,  F02B37/164 ,  Y02T10/144 ,  Y02T10/24

摘要： An exhaust gas purification system for an engine equipped with a turbocharger and an exhaust pipe having a NOx conversion catalyst therein. The system comprises a reservoir for storing pressurized air received from the turbocharger, a reductant injector in fluid communication with a reductant supply, and a mixing chamber in fluid communication with the reservoir and connected to the reductant injector. The reductant injector is responsive to an injection signal for atomizing and injecting a quantity of reductant into the mixing chamber. The mixing chamber is in fluid communication with the exhaust pipe for introducing a quantity of air and reductant mixture into the exhaust gas flow upstream of the NOx conversion catalyst. In one aspect of the invention, the system includes an engine control unit, a valve connected between the reservoir and the mixing chamber, and a differential pressure transducer positioned between the mixing chamber and the exhaust pipe for measuring the pressure differential across the mixing chamber and exhaust pipe upstream of the NOx conversion catalyst. The engine control unit controls the valve to introduce a quantity of pressurized air from the reservoir into the mixing chamber to maintain the pressure differential between the mixing chamber and exhaust pipe substantially constant.

摘要翻译： 一种配备有涡轮增压器和排气管的发动机的废气净化系统，其中具有NOx转化催化剂。 该系统包括用于存储从涡轮增压器接收的加压空气的储存器，与还原剂供应源流体连通的还原剂注入器，以及与储存器流体连通并连接到还原剂注入器的混合室。 还原剂喷射器响应于喷射信号，用于将一定量的还原剂雾化并注入到混合室中。 混合室与排气管流体连通，用于将一定量的空气和还原剂混合物引入到NOx转化催化剂上游的废气流中。 在本发明的一个方面，该系统包括发动机控制单元，连接在储存器和混合室之间的阀以及位于混合室和排气管之间的差压变送器，用于测量混合室两端的压力差，以及 排气管在NOx转化催化剂的上游。 发动机控制单元控制阀门，将一定数量的加压空气从储存器引入混合室，以保持混合室和排气管之间的压差基本恒定。

公开(公告)号：US07322194B2

公开(公告)日：2008-01-29

申请号：US11239553

申请日：2005-09-28

申请人： Harold Sun ,  Richard Baker ,  John Vanderslice ,  Jeffrey B. Schneyer ,  William Ruona

发明人： Harold Sun ,  Richard Baker ,  John Vanderslice ,  Jeffrey B. Schneyer ,  William Ruona

IPC分类号： F02M25/07 ,  F02B33/44 ,  F02D23/00

CPC分类号： F02B37/013 ,  F02B37/004 ,  F02B37/12 ,  F02B37/16 ,  F02B37/18 ,  F02B37/24 ,  Y02T10/144

摘要： A method for controlling an engine having an intake manifold and an exhaust manifold, where an exhaust gas recirculation path with a valve is provided between said intake and exhaust manifold, and the engine has a turbocharger; the method comprising during at least one decreased engine output condition, increasing opening of the exhaust gas recirculation valve and adjusting exhaust expansion through a turbine of the turbocharger to decrease expansion through the turbocharger and thereby reduce a likelihood of turbocharger surge.

摘要翻译： 一种用于控制具有进气歧管和排气歧管的发动机的方法，其中在所述进气歧管和排气歧管之间设置有带有阀的废气再循环路径，并且所述发动机具有涡轮增压器; 所述方法包括在至少一个减少的发动机输出状态期间，增加排气再循环阀的打开并调节通过涡轮增压器的涡轮机的排气膨胀，以减小通过涡轮增压器的膨胀，从而降低涡轮增压器浪涌的可能性。