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公开(公告)号：US10094324B2
公开(公告)日：2018-10-09
申请号：US13905691
申请日：2013-05-30
发明人： Thomas Michael Lavertu , Adam Edgar Klingbeil , Roy James Primus , Omowoleola Chukwuemeka Akinyemi , Venu Gopal Gummadavelli , Barry Allen Record , James Henry Yager
IPC分类号： F02B3/00 , F02D43/04 , F02D41/00 , F02B37/00 , F02B37/013 , F02B37/16 , F02B37/18 , F02B37/22 , F02M26/08 , F02M26/10 , F02D41/14 , F02D41/40 , F02D31/00 , F02B29/04 , F02M26/23
摘要： A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.
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公开(公告)号：US20140358404A1
公开(公告)日：2014-12-04
申请号：US13905691
申请日：2013-05-30
发明人： Thomas Michael Lavertu , Adam Edgar Klingbeil , Roy James Primus , Omowoleola Chukwuemeka Akinyemi , Venu Gopal Gummadavelli , Barry Allen Record , James Henry Yager
IPC分类号： F02D43/04
CPC分类号： F02D43/04 , F01N2560/026 , F02B29/0412 , F02B37/004 , F02B37/013 , F02B37/16 , F02B37/18 , F02B37/22 , F02D31/001 , F02D41/0007 , F02D41/005 , F02D41/144 , F02D41/1454 , F02D41/1461 , F02D41/40 , F02D41/401 , F02D2041/001 , F02D2250/18 , F02D2250/36 , F02D2250/38 , F02M26/08 , F02M26/10 , F02M26/23 , Y02T10/142 , Y02T10/144 , Y02T10/44 , Y02T10/47
摘要： A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.
摘要翻译： 提供了一种操作内燃机的方法。 该方法包括在多个气缸内燃烧新鲜空气和燃料的混合物。 该方法还包括将排气的第一部分引导到用于膨胀废气的涡轮增压器的第一级涡轮机和第二级涡轮机，引导来自排气歧管的排气的第二部分经由旁路第一 并且在与新鲜空气混合之后将第三部分排气再循环到进气歧管中。 该方法包括以下步骤中的至少一个：控制每个发动机功率设定时的正常发动机转速，同时通过增加每个循环的燃料喷射来保持发动机功率水平恒定; 在再循环期间同时增加废气第三部分的流量; 并推进燃料喷射正时，以减少符合第4级要求的排放水平。
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公开(公告)号：US20160160811A1
公开(公告)日：2016-06-09
申请号：US15045616
申请日：2016-02-17
发明人： Dipankar Deb , Manthram Sivasubramaniam , Prashant Srinivasan , Sharath Sridhar Aramanekoppa , Prem Kumar Patchaikani , Sachin Shivajirao Kulkarni , Sebastian Walter Freund , Jassin Marcel Fritz , Georgios Bikas , James Henry Yager , Shashi Kiran
CPC分类号： F02M26/49 , F02D9/04 , F02D41/005 , F02D41/0065 , F02D41/0082 , F02D41/1448 , F02D41/221 , F02D41/40 , F02M26/09 , F02M26/16 , F02M26/43 , F02M26/44 , F02M26/47 , Y02T10/47
摘要： Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.
摘要翻译： 提供了用于控制废气再循环（EGR）的系统和方法。 在一个示例中，发动机系统包括将排气歧管连接到发动机排气系统的第一EGR阀，将排气歧管连接到发动机进气系统的第二EGR阀和控制单元。 控制单元基于目标量选择性地调节第一EGR阀的位置，并且基于目标量和第一EGR阀的位置来调节第二EGR阀的位置。 响应于第一EGR阀的第一劣化条件，控制单元基于目标量并基于第一排气歧管的压力调节第二EGR阀的位置，并且响应于第一EGR阀的第二劣化条件 阀，基于目标量调节第二EGR阀的位置。
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公开(公告)号：US20150198070A1
公开(公告)日：2015-07-16
申请号：US14155553
申请日：2014-01-15
发明人： Barry Record , Roy James Primus , Venu Gummadavelli , James Henry Yager , Omowoleola Chukwuemeka Akinyemi , Adam Edgar Klingbeil , Thomas Michael Lavertu
IPC分类号： F01N3/10
CPC分类号： F01N3/10 , F02B23/0645 , F02B23/0669 , F02M61/1806 , F02M61/184 , F02M61/1846
摘要： Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.
摘要翻译： 为发动机的燃烧系统提供各种方法和系统。 在一个实例中，燃烧系统包括具有中心顶点的活塞冠碗，燃烧室以约13:1至约17:1的压缩比可操作，燃烧室至少部分地由活塞 冠碗和燃料喷射器，喷嘴延伸到燃烧室的中心部分，其可操作以将燃料直接喷射到燃烧室中，喷嘴限定了六至十个范围内的多个孔。
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公开(公告)号：US10253731B2
公开(公告)日：2019-04-09
申请号：US15045616
申请日：2016-02-17
发明人： Dipankar Deb , Manthram Sivasubramaniam , Prashant Srinivasan , Sharath Sridhar Aramanekoppa , Prem Kumar Patchaikani , Sachin Shivajirao Kulkarni , Sebastian Walter Freund , Jassin Marcel Fritz , Georgios Bikas , James Henry Yager , Shashi Kiran
IPC分类号： F02M26/49 , F02M26/09 , F02M26/16 , F02M26/44 , F02M26/47 , F02M26/43 , F02D41/14 , F02D41/22 , F02D41/00 , F02D41/40 , F02D9/04
摘要： Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.
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公开(公告)号：US09695723B2
公开(公告)日：2017-07-04
申请号：US14155553
申请日：2014-01-15
发明人： Barry Record , Roy James Primus , Venu Gummadavelli , James Henry Yager , Omowoleola Chukwuemeka Akinyemi , Adam Edgar Klingbeil , Thomas Michael Lavertu
CPC分类号： F01N3/10 , F02B23/0645 , F02B23/0669 , F02M61/1806 , F02M61/184 , F02M61/1846
摘要： Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.
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