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公开(公告)号：US10001088B2
公开(公告)日：2018-06-19
申请号：US15016061
申请日：2016-02-04
CPC分类号： F02M25/0818 , B60K15/035 , B60K15/03504 , B60K2015/03217 , B60K2015/03514 , B60K2015/03566 , B60Y2400/306
摘要： Methods and systems are provided for conducting an engine off natural vacuum test in a vehicle in order to indicate the presence or absence of undesired evaporative emissions. In one example, a vehicle fuel system and evaporative emissions system are sealed from atmosphere, and responsive to a pressure increase below an expected threshold, the fuel system and evaporative emissions system are actively pressurized via circulating hot engine coolant to a heater core and blowing hot air through the vehicle cabin to the fuel system via a three way ventilation valve in the rear of the vehicle. In this way, false failures of EONV test procedures due to environmental factors and vehicle operator drive habits may be reduced, and unnecessary engine service may be avoided.
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公开(公告)号：US20150292421A1
公开(公告)日：2015-10-15
申请号：US14252665
申请日：2014-04-14
IPC分类号： F02D41/00
CPC分类号： F02D41/004 , F02B37/16 , F02D41/0002 , F02D41/0042 , F02D2009/024 , F02D2250/41 , F02M25/0836 , F02M25/089 , F02M35/10157 , F02M35/10222 , Y02T10/144
摘要： Methods and systems are provided for improving the efficiency of canister purge completion. Based on engine operating conditions, a canister is purged to a compressor inlet or a throttle outlet. During purging conditions, as canister loads change, a purge flow through the canister is varied so that a fixed preselected portion of total engine fueling is delivered as fuel vapors.
摘要翻译： 提供了方法和系统，以提高罐吹扫完成的效率。 基于发动机工作条件，将罐排出到压缩机入口或节流阀出口。 在清洗条件期间，随着罐体负载的变化，通过罐的吹扫流量是变化的，使得总体发动机加油的固定预选部分作为燃料蒸气被输送。
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公开(公告)号：US20140297163A1
公开(公告)日：2014-10-02
申请号：US13852785
申请日：2013-03-28
CPC分类号： F02D41/0002 , F02D41/003 , F02D41/0065 , F02D2200/0406 , F02D2250/08 , F02D2250/41 , F02M25/06 , F02M25/089 , Y02T10/42
摘要： A method for operating an engine system is provided. The method includes maintaining an intake volume positioned upstream of a throttle and downstream of air cleaner within a selected operating pressure range through adjustment of a balance purge valve positioned upstream of the intake volume and a gas discharge source.
摘要翻译： 提供了一种用于操作发动机系统的方法。 该方法包括通过调节位于入口容积上游的平衡清除阀和气体排放源来将位于节气门上游的进气体量保持在选定的操作压力范围内的空气净化器的下游。
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公开(公告)号：US20140224225A1
公开(公告)日：2014-08-14
申请号：US13764624
申请日：2013-02-11
IPC分类号： F02M25/08
CPC分类号： F02M25/0836 , F02D9/02 , F02D19/0621 , F02D41/003 , F02D41/0032 , F02D41/0037 , F02D41/004 , F02D41/0042 , F02D41/0045 , F02D41/005 , F02D2009/0213 , F02M25/08 , F02M26/05 , F02M26/06 , F02M26/71 , F02M35/10222
摘要： A purge valve and a fuel vapor management system for use with an engine emission control system are disclosed. The purge valve may include a first inlet for receiving a first flow of air from an air cleaner, a second inlet for receiving a second flow of purge vapors from an evaporative canister, and an outlet directing a controlled mixture of the first and second flows to an engine, upstream of an intake throttle. Relative amounts of the first flow and second flow may be selectively controlled by varying a position of the valve.
摘要翻译： 公开了一种用于发动机排放控制系统的清洗阀和燃料蒸气管理系统。 吹扫阀可以包括用于从空气净化器接收第一空气流的第一入口，用于从蒸发罐接收第二吹扫蒸气的第二入口，以及将第一和第二流的受控混合物引导到 发动机，在进气节气门的上游。 可以通过改变阀的位置来选择性地控制第一流量和第二流量的相对量。
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公开(公告)号：US20180045128A1
公开(公告)日：2018-02-15
申请号：US15791856
申请日：2017-10-24
CPC分类号： F02D41/004 , F02B37/16 , F02D41/0002 , F02D41/0042 , F02D2009/024 , F02D2250/41 , F02M25/0836 , F02M25/089 , F02M35/10157 , F02M35/10222 , Y02T10/144
摘要： Methods and systems are provided for improving the efficiency of canister purge completion. Based on engine operating conditions, a canister is purged to a compressor inlet or a throttle outlet. During purging conditions, as canister loads change, a purge flow through the canister is varied so that a fixed preselected portion of total engine fueling is delivered as fuel vapors.
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公开(公告)号：US09822719B2
公开(公告)日：2017-11-21
申请号：US15064811
申请日：2016-03-09
发明人： Aed M. Dudar , Donald Ignasiak , Dennis Seung-Man Yang , Russell Randall Pearce , Mark W. Peters , Niels Christopher Kragh
CPC分类号： F02M35/10222 , F02D41/0032 , F02D41/0045 , F02D41/1456 , F02M25/0836 , F02M25/0854 , F02M25/089
摘要： Methods and systems are provided for controlling the purging of a fuel vapor canister coupled to a vehicle fuel tank, configured for capturing and storing vapors emanating from the tank. In one example, two canister purge valves are coupled in series in a fuel vapor conduit between the fuel vapor canister and engine intake, one at the intake manifold and one at the fuel vapor canister, such that fine control over the introduction of fuel vapors into the engine is maintained via the purge valve at the intake manifold, while thorough purging of the fuel vapor canister may be regulated via the purge valve at the fuel vapor canister. In this way, fuel vapors in the fuel vapor canister may be effectively purged to intake, thus reducing the potential for undesired evaporative emissions.
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公开(公告)号：US20170260918A1
公开(公告)日：2017-09-14
申请号：US15064811
申请日：2016-03-09
发明人： Aed M. Dudar , Donald Ignasiak , Dennis Seung-Man Yang , Russell Randall Pearce , Mark W. Peters , Niels Christopher Kragh
CPC分类号： F02M35/10222 , F02D41/0032 , F02D41/0045 , F02D41/1456 , F02M25/0836 , F02M25/0854 , F02M25/089
摘要： Methods and systems are provided for controlling the purging of a fuel vapor canister coupled to a vehicle fuel tank, configured for capturing and storing vapors emanating from the tank. In one example, two canister purge valves are coupled in series in a fuel vapor conduit between the fuel vapor canister and engine intake, one at the intake manifold and one at the fuel vapor canister, such that fine control over the introduction of fuel vapors into the engine is maintained via the purge valve at the intake manifold, while thorough purging of the fuel vapor canister may be regulated via the purge valve at the fuel vapor canister. In this way, fuel vapors in the fuel vapor canister may be effectively purged to intake, thus reducing the potential for undesired evaporative emissions.
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公开(公告)号：US09168829B2
公开(公告)日：2015-10-27
申请号：US13944762
申请日：2013-07-17
CPC分类号： B60K15/03006 , B01D53/04 , B60K15/04 , F02M25/08 , F02M25/0854
摘要： A vapor storage device is provided. The vapor storage device includes a diffuser plate positioned on an axis of an inlet port and comprising one or more openings extending through the plate from a leading edge to a trailing edge and a dome coupled to the inlet port of the device and the diffuser plate, where the dome includes side walls spaced away from the diffuser plate.
摘要翻译： 提供蒸汽存储装置。 蒸气存储装置包括位于入口端口的轴线上的扩散板，包括从前缘到后缘延伸穿过板的一个或多个开口和连接到装置的入口端口和扩散板的圆顶， 其中圆顶包括与扩散板间隔开的侧壁。
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公开(公告)号：US20150107562A1
公开(公告)日：2015-04-23
申请号：US14581529
申请日：2014-12-23
CPC分类号： F02D41/004 , F02D19/0621 , F02D41/003 , F02D41/0032 , F02M25/0836 , F02M25/0854 , F02M25/0872 , F02M25/089
摘要： A method for operating a fuel system is disclosed. The method includes sequentially purging fuel vapors from each of a plurality of regions of a canister. Purging a region includes opening an air inlet valve associated with that region and maintaining air inlet valves associated with each other region closed to direct fuel vapors to at least one purge outlet.
摘要翻译： 公开了一种操作燃料系统的方法。 该方法包括从罐的多个区域中的每一个顺序地清除燃料蒸汽。 吹扫区域包括打开与该区域相关联的进气阀，并且保持与彼此相邻的区域相关联的进气阀，以将燃料蒸气引导至至少一个吹扫出口。
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