公开(公告)号：US06595436B2

公开(公告)日：2003-07-22

申请号：US09850117

申请日：2001-05-08

申请人： Joseph Kirzhner ,  Lester Peters ,  John D. Crofts ,  Wayne Eckerle

发明人： Joseph Kirzhner ,  Lester Peters ,  John D. Crofts ,  Wayne Eckerle

IPC分类号： B05B108

CPC分类号： F02M61/167 ,  F02M51/0603 ,  F02M2200/702

摘要： The fuel injector includes a solid state actuator that operates through an actuator motion amplifying lever to directly control the needle valve motion. Hydraulic forces, which act along the axes of the needle valve and the motion amplifying lever, are compensated by using a control piston, or other biasing means, to reduce the required amplitude of the control current/voltage and to reduce the required strength of the spring biasing the needle valve closed. The fuel injector may also include a control fuel inlet that is separate from the injection fuel inlet port.

公开(公告)号：US20050028797A1

公开(公告)日：2005-02-10

申请号：US10637361

申请日：2003-08-08

申请人： John Janssen ,  Bruce Watson ,  Charles Schenk ,  Josh Shao ,  Lester Peters ,  David Buchanan ,  Wayne Eckerle ,  Julius Perr

发明人： John Janssen ,  Bruce Watson ,  Charles Schenk ,  Josh Shao ,  Lester Peters ,  David Buchanan ,  Wayne Eckerle ,  Julius Perr

IPC分类号： F02M25/07

CPC分类号： F02M26/59 ,  F02M26/40 ,  F02M26/58 ,  F02M26/67

摘要： A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.

公开(公告)号：US20080006712A1

公开(公告)日：2008-01-10

申请号：US11044724

申请日：2005-01-28

申请人： Donald Benson ,  David Rix ,  Lester Peters ,  Shankar Venkataraman ,  C. Morris

发明人： Donald Benson ,  David Rix ,  Lester Peters ,  Shankar Venkataraman ,  C. Morris

IPC分类号： F02D1/06

CPC分类号： F02M47/027 ,  F02M45/083 ,  F02M61/042 ,  F02M63/0017 ,  F02M63/0022 ,  F02M2200/315

摘要： A closed nozzle fuel injector is provided which effectively controls the fuel injection flow rate, especially during an initial portion of an injection event, while also permitting accurate control over pilot and/or post injection flow rates at all operating conditions thereby advantageously reducing emissions and combustion noise. The injector includes a rate shaping orifice to restrict fuel flow during an initial portion of an injection event and a rate shaping sleeve mounted for movement to cause a greater flow of injection fuel during a later portion of the injection event. A damping chamber and orifice are also provided to control movement of the rate shaping sleeve.

摘要翻译： 提供了一种封闭的喷嘴燃料喷射器，其特别是在喷射事件的初始部分期间有效地控制燃料喷射流量，同时还允许在所有操作条件下精确控制先导和/或后喷射流量，从而有利地减少排放和燃烧 噪声。 喷射器包括速率成形孔，用于限制喷射事件的初始部分期间的燃料流量，以及安装成用于在喷射事件的稍后部分期间引起更大喷射燃料流量的速率成形套筒。 还提供阻尼室和孔口以控制速率成形套筒的运动。

公开(公告)号：US20050252494A1

公开(公告)日：2005-11-17

申请号：US10843357

申请日：2004-05-12

申请人： Peter Rauznitz ,  Lester Peters ,  John Crofts ,  William Meyer

发明人： Peter Rauznitz ,  Lester Peters ,  John Crofts ,  William Meyer

IPC分类号： F02D41/20 ,  F02M37/04 ,  F02M47/02 ,  F02M59/46 ,  F02M61/16 ,  F02M63/00

CPC分类号： F02D41/2096 ,  F02M45/12 ,  F02M47/027 ,  F02M61/161 ,  F02M63/0026 ,  F02M63/004 ,  F02M63/0043 ,  F02M63/0068

摘要： A piezoelectric fuel injection system and a method of controlling same are provided which include a piezoelectric fuel injector having a piezoelectric element, a power source adapted to provide power to the piezoelectric element to actuate the piezoelectric fuel injector, and a controller adapted to charge the piezoelectric element to an initial voltage to begin said injection event, to decrease the voltage from the initial voltage to an intermediate voltage, and to increase the voltage from the intermediate voltage to a primary voltage to thereby control the injection rate shape. The initial voltage level is at least approximately equal to said primary voltage level and preferably approximately equal to a maximum voltage rating. The initial voltage duration, the intermediate voltage duration and the magnitude of the intermediate voltage can be changed or varied to modify the injection or rate shape.

摘要翻译： 提供了一种压电燃料喷射系统及其控制方法，其包括具有压电元件的压电式燃料喷射器，适于向压电元件供电以驱动压电燃料喷射器的动力源，以及适于对压电元件充电的控制器 元件到初始电压以开始所述注入事件，以将电压从初始电压降低到中间电压，并且将电压从中间电压增加到初级电压，从而控制注入速率形状。 初始电压电平至少近似等于所述初级电压电平，优选近似等于最大额定电压。 可以改变或改变初始电压持续时间，中间电压持续时间和中间电压的幅度以改变注入或速率形状。