公开(公告)号：US10072601B2

公开(公告)日：2018-09-11

申请号：US15053766

申请日：2016-02-25

申请人： Ford Global Technologies, LLC

发明人： Dietmar Hermann ,  Uwe Reuter ,  David van Bebber

IPC分类号： F02D41/38 ,  F02D41/06 ,  F02D41/26 ,  F02D41/04 ,  F02N11/08 ,  F02M55/02

CPC分类号： F02D41/3863 ,  F02D41/042 ,  F02D41/062 ,  F02D41/26 ,  F02D41/3818 ,  F02D41/3827 ,  F02D41/3845 ,  F02D41/3854 ,  F02M55/025 ,  F02N11/0814

摘要： Methods and system are provided for operating a fuel system of a stop-start engine system. In one example a method may comprise powering off a lift pump and maintaining a volume control valve in a closed position during an engine stop to maintain a fuel pressure within a fuel rail and one or more fuel injectors. The method may further comprise, in response to determining an engine start is desired, powering on the lift pump, initiating cylinder combustion, and operating a higher pressure pump (HPP) in an unpressurized mode when a fuel pressure upstream of the HPP is less than a threshold and switching to operating the HPP in a pressurized mode when the fuel pressure upstream of the HPP reaches the threshold.

公开(公告)号：US20150081195A1

公开(公告)日：2015-03-19

申请号：US14469502

申请日：2014-08-26

申请人： Ford Global Technologies, LLC

发明人： Oliver Berkemeier ,  Jens Wojahn ,  David van Bebber ,  Klemens Grieser ,  Uwe Reuter

IPC分类号： F02D41/38 ,  G05D16/02 ,  F02D41/14

CPC分类号： F02D41/3863 ,  F02D41/1401 ,  F02D2200/0614 ,  F02D2250/04 ,  G05D16/02 ,  Y10T137/0396

摘要： A system and method for controlling fuel injection and a fuel injection system, wherein the fuel injection system comprises a fuel pump and a plurality of injection valves, each connected to a cylinder of an internal combustion engine, wherein the fuel pump and/or the injection valves produce pressure waves that cause fuel pressure fluctuations, and wherein depending on a respective current demanded fuel quantity in the internal combustion engine the fuel injection quantity is reduced or increased by using at least one actuator to produce additional pressure waves in the fuel injection system that modify the fuel pressure fluctuations with at least temporary boosting of said fuel pressure fluctuations.

摘要翻译： 一种用于控制燃料喷射和燃料喷射系统的系统和方法，其中所述燃料喷射系统包括燃料泵和多个喷射阀，每个喷射阀连接到内燃机的气缸，其中燃料泵和/或喷射 阀产生导致燃料压力波动的压力波，并且其中，根据内燃机中相应的电流要求燃料量，燃料喷射量通过使用至少一个致动器在燃料喷射系统中产生额外的压力波而减小或增加， 改变燃料压力波动，至少暂时增加所述燃料压力波动。

公开(公告)号：US20160245220A1

公开(公告)日：2016-08-25

申请号：US15053766

申请日：2016-02-25

申请人： Ford Global Technologies, LLC

发明人： Dietmar Hermann ,  Uwe Reuter ,  David van Bebber

IPC分类号： F02D41/38 ,  F02D41/26

CPC分类号： F02D41/3863 ,  F02D41/042 ,  F02D41/062 ,  F02D41/26 ,  F02D41/3818 ,  F02D41/3827 ,  F02D41/3845 ,  F02D41/3854 ,  F02M55/025 ,  F02N11/0814

摘要： Methods and system are provided for operating a fuel system of a stop-start engine system. In one example a method may comprise powering off a lift pump and maintaining a volume control valve in a closed position during an engine stop to maintain a fuel pressure within a fuel rail and one or more fuel injectors. The method may further comprise, in response to determining an engine start is desired, powering on the lift pump, initiating cylinder combustion, and operating a higher pressure pump (HPP) in an unpressurized mode when a fuel pressure upstream of the HPP is less than a threshold and switching to operating the HPP in a pressurized mode when the fuel pressure upstream of the HPP reaches the threshold.

摘要翻译： 提供了用于操作停止起动发动机系统的燃料系统的方法和系统。 在一个示例中，一种方法可以包括在发动机停止期间关闭提升泵并将体积控制阀保持在关闭位置，以将燃料压力维持在燃料轨道和一个或多个燃料喷射器内。 该方法还可以包括：当HPP上游的燃料压力小于或等于的情况下，响应于确定需要发动机启动，对提升泵供电，启动气缸燃烧和以非加压模式操作高压泵（HPP） 阈值，并且当HPP上游的燃料压力达到阈值时，切换到以加压模式操作HPP。