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公开(公告)号：US20190170075A1
公开(公告)日：2019-06-06
申请号：US16092807
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Eiji MURASE , Tomohiro NAKANO
摘要： A fuel injection control device includes a correction unit to calculate a correction coefficient for correcting a valve closing timing detected by an electromotive force quantity detection mode by using a valve closing timing detected by a timing detection mode. An estimation unit estimates an estimated injection quantity by using a valve closing timing after corrected by using a correction coefficient when the electromotive force quantity detection mode is selected by a selection unit and a valve closing timing is detected by the electromotive force quantity detection mode.
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公开(公告)号：US20190136789A1
公开(公告)日：2019-05-09
申请号：US16092940
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Eiji MURASE , Tomohiro NAKANO
CPC分类号： F02D41/401 , F02D41/20 , F02D41/247 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058 , F02D2200/0614 , F02D2200/063 , F02M51/0614 , F02M51/0685 , Y02T10/44
摘要： A fuel injection control device includes a valve closing detection unit to detect a valve closing timing by using either of an electromotive force quantity detection mode and an timing detection mode and a selection unit to select either of the electromotive force quantity detection mode and the timing detection mode for detecting the valve closing timing, and the selection unit: selects the timing detection mode when a requested injection quantity is larger than a prescribed reference injection quantity in partial lift injection; and selects the electromotive force quantity detection mode when the requested injection quantity is smaller than the reference injection quantity.
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公开(公告)号：US20190120167A1
公开(公告)日：2019-04-25
申请号：US16092831
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Tomohiro NAKANO
CPC分类号： F02D41/345 , F02D41/20 , F02D41/247 , F02D41/3094 , F02D2041/2055 , F02D2041/2058 , F02D2041/389 , F02D2200/0614 , F02M51/061 , Y02T10/44
摘要： A fuel injection control device has a detection unit, a correction value calculation unit, and a conduction time calculation unit. The detection unit detects a current increase speed that is a speed of increasing an electric current flowing in an electromagnetic coil in accordance with the start of conducting the electromagnetic coil during partial lift injection in which a valve body starts valve closing operation before the valve body reaches a maximum valve opening position after the valve body starts valve opening operation. The correction value calculation unit calculates a correction value for a requested injection quantity on the basis of the detected current increase speed. The conduction time calculation unit calculates a conduction time of the electromagnetic coil during the partial lift injection on the basis of the requested injection quantity corrected by the correction value.
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公开(公告)号：US20190178189A1
公开(公告)日：2019-06-13
申请号：US16093068
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Eiji MURASE , Tomohiro NAKANO
摘要： A fuel injection control device includes a valve closing detection unit (54) to detect a valve closing timing by using either of an electromotive force quantity detection mode and a timing detection mode, a selection unit (21) to select either of the electromotive force quantity detection mode and the timing detection mode for detecting the valve closing timing, and a correction unit (21) to calculate a correction coefficient for correcting a requested injection quantity so as to reduce the difference between an estimated injection quantity and the requested injection quantity, and the selection unit selects the electromotive force quantity detection mode regardless of the value of the requested injection quantity when the calculation of the correction coefficient is not completed.
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公开(公告)号：US20190195163A1
公开(公告)日：2019-06-27
申请号：US16092994
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Tomohiro NAKANO
摘要： A fuel injection control device includes a conduction time calculation unit, a detection unit, an estimation unit, a correction unit, a sudden change determination unit, and a reflection speed setting unit. The detection unit detects a physical quantity having a correlation with an actual injection quantity during the partial lift injection. The estimation unit estimates the actual injection quantity on the basis of a detection result of the detection unit. The correction unit corrects the requested injection quantity by a correction quantity corresponding to a deviation between the actual injection quantity and the requested injection quantity. The sudden change determination unit determines whether or not the correction quantity is in a sudden change state on the basis of whether or not the correction quantity has changed from a previous value by a prescribed quantity or more. The reflection speed setting unit sets the reflection speed.
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公开(公告)号：US20190145330A1
公开(公告)日：2019-05-16
申请号：US16092885
申请日：2017-04-07
发明人： Nobuyuki SATAKE , Tomohiro NAKANO
CPC分类号： F02D41/04 , F02D41/20 , F02D41/247 , F02D2041/2055 , F02D2200/0614 , F02M47/027 , F02M57/02 , F02M59/366 , F02M59/466 , F02M65/00
摘要： A fuel injection control device has a conduction time calculation unit, a setting unit, a conduction control unit, a detection unit, an estimation unit, and a changing unit. The conduction time calculation unit calculates a conduction time of an electric actuator corresponding to a requested injection quantity during partial lift injection. The setting unit sets a command conduction time. The conduction control unit energizes an electric actuator on the basis of a command conduction time set by the setting unit. The detection unit detects a physical quantity having a correlation with an actual injection quantity during partial lift injection. The estimation unit estimates an actual injection quantity on the basis of a detection result of the detection unit. The changing unit changes a lower limit time on the basis of a deviation between an estimated actual injection quantity and a requested injection quantity.
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