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公开(公告)号：US11274615B2
公开(公告)日：2022-03-15
申请号：US16902615
申请日：2020-06-16
发明人： Allen Lehmen , Michiel J. Van Nieuwstadt , Kenneth John Behr , Daniel Buckrop , Ethan D. Sanborn , Marcus William Fried
摘要： Systems and methods for estimating a temperature of an after treatment device in an exhaust system of an engine are described. In one example, the temperature is estimated during condition when an engine is in a fuel cut-out mode and fuel vapors are being released to the engine via a fuel vapor storage canister.
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公开(公告)号：US20190234333A1
公开(公告)日：2019-08-01
申请号：US16378231
申请日：2019-04-08
CPC分类号： F02D41/1454 , F02D13/0219 , F02D19/0665 , F02D41/221 , F02D41/222 , F02D41/2467 , F02D41/3094 , F02D2041/3881
摘要： Methods and systems are provided for enabling a transfer function of a direct injector and a port injector, each fueling an engine cylinder, to be accurately learned. During selected conditions, the direct injected fuel fraction may be actively changed from a target fraction to one of an upper and lower limit of the direct injector so as to provide a measurable air-fuel ratio error. Fueling errors for the distinct fuel injectors is then learned based on the measured air-fuel ratio error relative to the actively changed fuel fraction.
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13.发明授权公开(公告)号：US10337442B2
公开(公告)日：2019-07-02
申请号：US15131950
申请日：2016-04-18
摘要： Methods and systems for simultaneously operating port fuel injectors and direct fuel injectors of an internal combustion engine are described. In one example, a port fuel injection window is shorted to provide time for scheduling a direct fuel injector pulse width so that the direct fuel injector pulse width may be adjusted so that a desired amount of fuel enters a cylinder.
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公开(公告)号：US20190072051A1
公开(公告)日：2019-03-07
申请号：US16184375
申请日：2018-11-08
CPC分类号： F02D41/3094 , F02D41/10 , F02D2200/60 , F02D2200/602
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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公开(公告)号：US10208686B1
公开(公告)日：2019-02-19
申请号：US15727337
申请日：2017-10-06
发明人： Joseph Lyle Thomas , Ethan D. Sanborn , Paul Hollar , Daniel Dusa
摘要： Methods and systems are provided for learning a cylinder-to-cylinder air variation. During conditions when a PFDI engine is operated in a port-injection only mode, prior to port fuel injection, a direct-injection fuel rail pressure may be lowered via direct-injection. Then, prior to a spark event in a port-injected cylinder, the direct-injector may be transiently opened to use the rail pressure sensor for estimating a cylinder compression pressure, and inferring cylinder air charge therefrom.
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公开(公告)号：US10156201B2
公开(公告)日：2018-12-18
申请号：US15981048
申请日：2018-05-16
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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公开(公告)号：US10018143B2
公开(公告)日：2018-07-10
申请号：US15242050
申请日：2016-08-19
发明人： Adithya Pravarun Re Ranga , Gopichandra Surnilla , Joseph Lyle Thomas , Ethan D. Sanborn , Mark Thomas Linenberg , Kenneth John Behr , Yichao Guo
CPC分类号： F02D41/402 , F02D41/1454 , F02D41/221 , F02D41/2467 , F02D41/263 , F02D41/3094 , F02D2041/224 , F02D2041/227 , F02D2041/389 , F02D2200/08
摘要： Systems and methods for determining air-fuel error in an engine fueled via direct and port fuel injection. Errors associated with individual fuel injection systems are distinguished from a common error based on trends in the error correction coefficients of the individual fuel injection systems. Adaptive fuel multipliers for each injection system are updated to account for the common error.
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公开(公告)号：US20180051647A1
公开(公告)日：2018-02-22
申请号：US15242188
申请日：2016-08-19
发明人： Adithya Pravarun Re Ranga , Gopichandra Surnilla , Joseph Lyle Thomas , Ethan D. Sanborn , Mark Thomas Linenberg , Kenneth John Behr
CPC分类号： F02D41/402 , F02D35/0092 , F02D41/1454 , F02D41/2467 , F02D41/26 , F02D41/3094 , F02D2041/389
摘要： Systems and methods for determining air-fuel error in an engine fueled via direct and port fuel injection. Errors associated with individual fuel injection systems are distinguished from a common error based on trends in the error correction coefficients of the individual fuel injection systems. Adaptive fuel multipliers for each injection system are updated to account for the common error.
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公开(公告)号：US09885309B1
公开(公告)日：2018-02-06
申请号：US15214232
申请日：2016-07-19
IPC分类号： F02D41/30
CPC分类号： F02D41/3094 , F02D41/3076
摘要： Methods and a system are provided for controlling fuel injection in a vehicle engine. The system specifically relates to an engine fueled with both port and direct fuel injectors. In one example, a method may include delivering a first portion of fuel via port injection during a first injection window, and subsequently delivering a second portion of fuel directly during a second injection window before the engine exits cranking speeds.
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公开(公告)号：US20170130666A1
公开(公告)日：2017-05-11
申请号：US15156047
申请日：2016-05-16
IPC分类号： F02D41/30
CPC分类号： F02D41/3094 , F02D41/10 , F02D2200/60 , F02D2200/602
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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