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公开(公告)号：US20240247631A1
公开(公告)日：2024-07-25
申请号：US18158520
申请日：2023-01-24
申请人： FCA US LLC
发明人： Louai Faied , John M. Lebar , Ethan M. English
CPC分类号： F02M69/462 , F02D41/32 , F02M69/54 , F02M2037/087
摘要： A fuel delivery system for a vehicle having an engine includes a fuel injection system, a fuel supply line configured to supply fuel from to the fuel injection system, and a fuel pressure sensor. An active expansion chamber (AEC) accumulator is fluidly coupled to the fuel supply line and includes a housing defining an interior chamber and an adjustable expansion chamber, a plunger assembly separating the interior chamber and the adjustable expansion chamber, and an actuator configured to selectively move the plunger assembly to actively adjust a volume of the adjustable expansion chamber. A controller is configured to detect a pressure change condition in the fuel delivery system and, in response, automatically adjust the volume of the adjustable expansion chamber to maintain the pressure of the fuel delivery system below a predetermined threshold to thereby facilitate preventing fuel leakage at the fuel injectors when the engine is shut off.
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2.发明授权公开(公告)号：US11835005B2
公开(公告)日：2023-12-05
申请号：US17882740
申请日：2022-08-08
发明人： Hiroki Sato
CPC分类号： F02D41/1401 , B63H21/14 , F02D41/32 , F02D2041/1412 , F02D2041/1432 , F02D2200/0404 , F02D2200/0408 , F02D2200/101
摘要： A fuel injection controller for a vessel engine to drive a propulsion apparatus mounted in a vessel is configured or programmed to execute functions of an effective opening area calculator to calculate an effective opening area of a throttle valve based on a throttle opening degree of the vessel engine, a filter value calculator to determine a first-order lag filter value of the effective opening area, a correction value calculator to determine a ratio of the effective opening area to the first-order lag filter value as a correction value, a predictive suction pressure calculator to determine predictive suction pressure by multiplying an average value of suction pressure detected at a suction passage by the correction value determined by the correction value calculator, a fuel injection amount calculator to calculate a fuel injection amount based on the predictive suction pressure, and a fuel injection driver to drive a fuel injector based on the fuel injection amount.
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3.发明授权公开(公告)号：US11668259B1
公开(公告)日：2023-06-06
申请号：US18058069
申请日：2022-11-22
CPC分类号： F02D41/1401 , F02D13/02 , F02D41/32 , F02D41/38 , F02B75/048 , F02D13/0269 , F02D41/2422 , F02D2041/001 , F02D2041/1412 , F02D2041/1433 , F02D2041/389 , F02D2200/0625 , F02D2200/101 , F02D2200/1002
摘要： Methods and systems for optimizing fuel economy and maintaining particulate emissions below a threshold of an engine system in a vehicle. An engine system has port fuel injection, direct injection, variable compression ratio, and independent compression/expansion. A processor predicts settings for the four systems that optimize for a fuel economy that is maximized. A particulate rate of the engine system is computed based on the settings. A determination is made of whether the particulate rate is below a threshold. When the particulate rate is below the threshold, command signals are delivered to actuators of the systems to move to the settings. When the threshold is exceeded, the settings are revised to maintain the particulate below the threshold while optimizing for fuel economy.
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公开(公告)号：US20230093638A1
公开(公告)日：2023-03-23
申请号：US17938913
申请日：2022-09-06
申请人： Nikki Co., Ltd.
发明人： Atsuhiro Fujii , Ryuichi Oguro
摘要： A method for controlling fuel injection to an engine may include calculating an amount of air passing through a throttle, which is actually controlled, from a calculated amount of air in an intake manifold, which is calculated from a pressure value detected by a pressure sensor installed in the intake manifold connecting the throttle and a cylinder to each other, and a calculated pressure change in the intake manifold. The method may further include predicting an actual amount of air to be sucked into the cylinder when mixed with fuel from the calculated amount of air in the intake manifold and the calculated amount of air passing through the throttle. The method may also include injecting an amount of fuel according to the predicted actual amount of air to be sucked into the cylinder.
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5.发明申请公开(公告)号：US20230058745A1
公开(公告)日：2023-02-23
申请号：US17882740
申请日：2022-08-08
发明人： Hiroki SATO
摘要： A fuel injection controller for a vessel engine to drive a propulsion apparatus mounted in a vessel is configured or programmed to execute functions of an effective opening area calculator to calculate an effective opening area of a throttle valve based on a throttle opening degree of the vessel engine, a filter value calculator to determine a first-order lag filter value of the effective opening area, a correction value calculator to determine a ratio of the effective opening area to the first-order lag filter value as a correction value, a predictive suction pressure calculator to determine predictive suction pressure by multiplying an average value of suction pressure detected at a suction passage by the correction value determined by the correction value calculator, a fuel injection amount calculator to calculate a fuel injection amount based on the predictive suction pressure, and a fuel injection driver to drive a fuel injector based on the fuel injection amount.
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公开(公告)号：US11459941B2
公开(公告)日：2022-10-04
申请号：US17669362
申请日：2022-02-11
摘要： An engine control device performs air-fuel ratio control of an engine through a main air-fuel ratio feedback process based on an output of a front air-fuel ratio sensor, a sub air-fuel ratio feedback process of alternately switching a target air-fuel ratio between a lean-side target air-fuel ratio and a rich-side target air-fuel ratio based on an output from a rear air-fuel ratio sensor. The engine control device performs a limiting process of setting an upper limit of a control range of an opening level of a waste gate valve to be less when a combustion operation of the engine continues to be performed for a long time without being stopped by fuel cutoff than otherwise.
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公开(公告)号：US10895513B2
公开(公告)日：2021-01-19
申请号：US16687629
申请日：2019-11-18
申请人： MIKUNI CORPORATION
发明人： Ren Takahashi , Katsuhiko Fukui
摘要： A pressure detection signal processing device, engine control system, and non-transitory computer readable medium storing a program are provided. A current-voltage conversion part that converts a current signal corresponding to charge generated by a piezoelectric element in accordance with received pressure into a voltage signal, and digital signal processing parts that perform correction for removing a drift caused by a leakage current of the piezoelectric element on the voltage signal through digital signal processing are provided. The digital signal processing parts include a differentiation processing part that performs differentiation processing on the voltage signal, an integration processing part that performs integration processing on the signal having been subjected to the differentiation processing, and an integration processing part that further performs integration processing on the signal having been subjected to the integration processing.
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公开(公告)号：US10823104B2
公开(公告)日：2020-11-03
申请号：US16505082
申请日：2019-07-08
发明人： Ryo Kusakabe , Motoyuki Abe , Toshihiro Aono , Takashi Okamoto
摘要： The purpose of the present invention is to detect variations between the quantities of fuel injected into cylinders by fuel injection devices and correct the fuel injection quantity variation while minimizing the computational load on a drive device and the level of performance required of a pressure sensor. A drive device for fuel injection devices according to the present invention performs control wherein movable valves are driven so that predetermined quantities of fuel are injected by applying, for the duration of a set energization time, a current that will reach an energization current to solenoids of a plurality of fuel injection devices which open/close fuel flow paths. The drive device is characterized in that the set energization time or energization current is corrected on the basis of a pressure detection value from a pressure sensor that is attached to a fuel supply pipe disposed upstream of the plurality of fuel injection devices.
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公开(公告)号：US10428748B2
公开(公告)日：2019-10-01
申请号：US15100846
申请日：2014-12-01
发明人： Ryo Sase , Yukio Yamashita , Ko Takayanagi , Atsushi Matsuo , Rikikazu Hayashi
IPC分类号： F02D41/00 , F02B37/013 , F02B37/04 , F02B37/18 , F02D41/14 , F02D41/32 , F02B37/12 , F02D41/30 , F02B39/16
摘要： A control device (10) for a supercharging system for supplying compressed intake air to an engine (6) includes: an engine controller (10A) including an engine signal input part (10A1) and an engine control part (10A2) configured to control an operational state of the engine and to compute a target boost pressure of a supercharger (4); and a turbo controller (10B2) including a turbo signal input part (10B1) and a turbo control part (10B2) configured to compute a margin of the supercharger. The control device is configured to compute a target boost-pressure corrected value by correcting the target boost pressure in accordance with a magnitude of the margin computed by the turbo control part, and to control a boost-pressure control unit (12) so that the boost pressure of the supercharger reaches the target boost-pressure corrected value.
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公开(公告)号：US10267253B2
公开(公告)日：2019-04-23
申请号：US15309958
申请日：2015-05-07
发明人： Atsushi Okonogi , Takao Fukuda
摘要： A booster circuit installed in a fuel injection device of an internal combustion engine, wherein malfunctions and characteristic changes of the booster circuit are detected, among which the detection distinguishes between decreases in capacity caused by deterioration or broken wires in a booster capacitor, and failures of a current monitor circuit, coil, externally connected fuel injection valve, and other components. The range of decrease in boost voltage when the fuel injection valve is opened is monitored, as is the range of increase per switch performed in order to restore the boost voltage. This makes it possible to detect malfunctions and characteristic changes of the booster circuit.
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