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公开(公告)号：US11466634B1
公开(公告)日：2022-10-11
申请号：US17649025
申请日：2022-01-26
发明人： Steven Wooldridge , Xiaogang Zhang
摘要： Systems and methods for operating an internal combustion engine that is included in a hybrid vehicle are described. In one example, the internal combustion engine is operated in a two stroke mode during cold starting to increase mass flow to an electrically heated catalyst so that engine emissions may be reduced.
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公开(公告)号：US10107219B2
公开(公告)日：2018-10-23
申请号：US15462622
申请日：2017-03-17
摘要： Methods and systems are provided for adjusting engine cranking speed, fueling, and spark initiation to increase fuel vaporization during cold-start conditions. In one example, a method may include, during engine cold-start, cranking the engine at a lower speed relative to a nominal cranking speed while injecting fuel and disabling spark for a number of engine cycles, and after the completion of the number of engine cycle increasing the cranking speed and initiating spark.
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公开(公告)号：US10087860B2
公开(公告)日：2018-10-02
申请号：US14817945
申请日：2015-08-04
发明人： Gopichandra Surnilla , Jianwen James Yi , Steven Wooldridge , Alexander O'Connor Gibson , Gary Alan Coulson , Foo Chern Ting
IPC分类号： F02D41/06 , F02D9/02 , F02D41/04 , F02D41/38 , F02D41/40 , F02P5/04 , F02D37/02 , F02D41/00 , F02P5/15
摘要： Methods and systems are provided for improving engine startability during cold-start conditions, when operating with gasoline fuels, alcohol fuels, or blended fuels. In one example, a method of engine cold-start control may include initiating fuel injection for cylinder combustion with manifold pressure lowered via intake throttle adjustments. The manifold pressure is lowered based on an optimization between cylinder charge reduction and improved fuel boiling at the lower pressure.
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公开(公告)号：US09840976B2
公开(公告)日：2017-12-12
申请号：US15589566
申请日：2017-05-08
发明人： Steven Wooldridge , Gopichandra Surnilla , Brad Alan Boyer , James Alfred Hilditch , Michael Howard Shelby , Chris Paul Glugla , Benjamin Richard Petersen
IPC分类号： B60T7/12 , F02D41/00 , F02B47/08 , F02M26/06 , F02P5/145 , F02D41/30 , F02D41/40 , F02D43/00
CPC分类号： F02D41/0072 , F02B47/08 , F02D41/0007 , F02D41/005 , F02D41/10 , F02D41/12 , F02D41/3023 , F02D41/3076 , F02D41/402 , F02D43/00 , F02M26/06 , F02P5/145 , Y02T10/44 , Y02T10/47
摘要： Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed.
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公开(公告)号：US20170241355A1
公开(公告)日：2017-08-24
申请号：US15589566
申请日：2017-05-08
发明人： Steven Wooldridge , Gopichandra Surnilla , Brad Alan Boyer , James Alfred Hilditch , Michael Howard Shelby , Chris Paul Glugla , Benjamin Richard Petersen
CPC分类号： F02D41/0072 , F02B47/08 , F02D41/0007 , F02D41/005 , F02D41/10 , F02D41/12 , F02D41/3023 , F02D41/3076 , F02D41/402 , F02D43/00 , F02M26/06 , F02P5/145 , Y02T10/44 , Y02T10/47
摘要： Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed.
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公开(公告)号：US09664128B2
公开(公告)日：2017-05-30
申请号：US15000800
申请日：2016-01-19
发明人： Steven Wooldridge , Gopichandra Surnilla , Brad Alan Boyer , James Alfred Hilditch , Michael Howard Shelby , Chris Paul Glugla , Benjamin Richard Petersen
IPC分类号： F02M25/07 , F02D41/00 , F02M26/06 , F02D43/00 , F02D41/30 , F02D41/40 , F02P5/145 , F02D41/10 , F02D41/12
CPC分类号： F02D41/0072 , F02B47/08 , F02D41/0007 , F02D41/005 , F02D41/10 , F02D41/12 , F02D41/3023 , F02D41/3076 , F02D41/402 , F02D43/00 , F02M26/06 , F02P5/145 , Y02T10/44 , Y02T10/47
摘要： Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed.
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公开(公告)号：US20150020768A1
公开(公告)日：2015-01-22
申请号：US13946740
申请日：2013-07-19
发明人： Jianwen James Yi , Claudia Olivia Iyer , Steven Wooldridge , Gary Alan Coulson , David Bruce Reiche , Brad Alan VanDerWege
IPC分类号： F02M61/18
CPC分类号： F02M61/1806 , F02B23/104 , F02B23/105 , F02B2023/103 , F02B2075/125 , Y02T10/123 , Y02T10/125
摘要： A fuel injector having an injector axis, comprising a first nozzle aiming in a first radial direction; a first nozzle pair aiming in radial directions each equally angled relative to the first direction, closest to the first radial direction, and having a longest radial offset; a nozzle second pair in radial directions each equally angled relative to the first direction; and another nozzle aiming opposite the first radial direction and having a shortest radial offset.
摘要翻译： 一种具有喷射器轴线的燃料喷射器，包括瞄准第一径向的第一喷嘴; 瞄准径向的第一喷嘴对，其相对于第一方向各自相等成角度，最靠近第一径向方向，并且具有最长的径向偏移; 喷嘴第二对在径向方向上各自相对于第一方向成角度; 以及与第一径向相对的另一个喷嘴，并具有最短的径向偏移。
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公开(公告)号：US20140100760A1
公开(公告)日：2014-04-10
申请号：US13648563
申请日：2012-10-10
CPC分类号： F02D21/08 , F02B2075/125 , F02D13/0207 , F02D13/0219 , F02D13/0265 , F02D41/0057 , F02D41/3011 , F02D43/00 , Y02T10/123 , Y02T10/18 , Y02T10/47
摘要： Various embodiments related to controlling EGR in an engine are disclosed. In one embodiment, a first EGR amount is supplied to a cylinder at a first temperature and a first engine speed and load. Further, at the first engine speed and load, as engine temperature increases from the first temperature to a second temperature, a first fuel amount is injected after exhaust valve closing and before intake valve opening while a second EGR amount is supplied to the cylinder that is greater than the first EGR amount.
摘要翻译： 公开了与控制发动机中的EGR相关的各种实施例。 在一个实施例中，在第一温度和第一发动机转速和负载下将第一EGR量提供给气缸。 此外，在第一发动机转速和负载下，当发动机温度从第一温度升高到第二温度时，在排气门关闭后和进气门打开之前喷射第一燃料量，同时将第二EGR量供给到气缸 大于第一EGR量。
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公开(公告)号：US11236662B2
公开(公告)日：2022-02-01
申请号：US16918680
申请日：2020-07-01
摘要： Systems are provided for a pre-chamber. In one example, a pre-chamber comprises a passage outside of a primary combustion chamber for flowing fuel directly from a fuel injector to an interior volume of the pre-chamber.
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公开(公告)号：US20170082057A1
公开(公告)日：2017-03-23
申请号：US15365015
申请日：2016-11-30
CPC分类号： F02D41/38 , F02B2075/125 , F02D13/0219 , F02D13/0265 , F02D29/02 , F02D41/065 , F02D41/26 , F02D41/3076 , F02D41/3094 , F02D41/402 , F02D2041/001 , F02D2041/0092 , F02D2041/389 , F02M69/042 , F02N11/0814 , Y02T10/123 , Y02T10/18 , Y02T10/44
摘要： A method and system for improving starting of an engine is presented. In one example, the method selects a first cylinder to receive fuel since engine stop the cylinder's position relative to the cylinder's top-dead-center compression stroke. The method also describes adjusting a number of fuel injections for a first combustion event since engine stop.
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