公开(公告)号：US20240011450A1

公开(公告)日：2024-01-11

申请号：US18348071

申请日：2023-07-06

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Noriya ISHIZAKI ,  Haruto URA ,  Takahiro NAKAJIMA

IPC分类号： F02D45/00 ,  F02D41/22

CPC分类号： F02D45/00 ,  F02D41/22 ,  F02D2200/04

摘要： Provided is a management system for an internal combustion engine equipped with a turbocharger, the management system including a first acquisition unit configured to acquire an amount of decrease in efficiency of a compressor of the turbocharger, and an information generation unit configured to generate information about maintenance based on the amount of decrease in efficiency.

公开(公告)号：US20190024603A1

公开(公告)日：2019-01-24

申请号：US16027996

申请日：2018-07-05

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Keiichi MYOJO ,  Yuki NOSE ,  Eiji IKUTA

IPC分类号： F02D41/24 ,  F02D41/14 ,  F01N3/20 ,  F01N3/08 ,  F02D41/08 ,  F02D41/00 ,  F02P5/15

CPC分类号： F02D41/2458 ,  F01N3/0871 ,  F01N3/101 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/2066 ,  F01N2430/06 ,  F02D41/0002 ,  F02D41/0032 ,  F02D41/008 ,  F02D41/025 ,  F02D41/08 ,  F02D41/1408 ,  F02D41/1454 ,  F02D41/22 ,  F02D43/00 ,  F02D45/00 ,  F02P5/1502

摘要： A controller for an internal combustion engine is configured to execute a dither control process, a purge control process, and a limiting process. The dither control process operates the fuel injection valves such that at least one of the cylinders is a lean combustion cylinder, in which the air-fuel ratio is leaner than the stoichiometric air-fuel ratio, and at least another one of the cylinders is a rich combustion cylinder, in which the air-fuel ratio is richer than the stoichiometric air-fuel ratio. The purge control process controls the purge flow rate by operating the adjustment device. The limiting process limits the purge control process such that, when the dither control process is being executed, the purge flow rate is reduced as compared to a case in which the dither control process is not being executed.

公开(公告)号：US20180313285A1

公开(公告)日：2018-11-01

申请号：US15981029

申请日：2018-05-16

申请人： Fujitsu Limited

发明人： Noriyasu Aso ,  Masatoshi Ogawa

IPC分类号： F02D41/14 ,  F02D41/26 ,  F02D41/00 ,  G06F17/17

CPC分类号： F02D45/00

摘要： A Wiebe function parameter identification method, the method includes: acquiring, by a computer, operation data when an internal-combustion engine is in operation; and identifying values of a plurality of parameters included in a combination of at least two Wiebe functions including a first Wiebe function and a second Wiebe function based on the operation data and a first difference between values of a same parameter of the first Wiebe function and the second Wiebe function.

公开(公告)号：US20180304829A1

公开(公告)日：2018-10-25

申请号：US15769700

申请日：2016-09-13

申请人： Hitachi Automotive Systems, Ltd.

发明人： Yoshimitsu YANAGAWA ,  Masahiro MATSUMOTO ,  Hiroshi NAKANO ,  Akira KOTABE

IPC分类号： B60R16/02 ,  F02D45/00 ,  G05F1/56 ,  B60L3/04 ,  H03K17/22

CPC分类号： B60R16/0207 ,  B60L3/04 ,  F02D45/00 ,  G05F1/56 ,  H03K17/223

摘要： Even when a positive/negative surge is applied to a power-supply line, occurrence of malfunction in a semiconductor device is lessened. In an in-vehicle semiconductor device, regulators convert an externally-supplied voltage to generate voltages. A voltage monitoring unit includes a voltage monitoring circuit and a switch, and monitors first to third voltages. An internal circuit has a processor operated by the voltage, and an oscillator operated by the voltage and generating a clock signal to be provided the processor. The voltage monitoring unit stops providing the clock signal to the processor when the voltage level of at least any one of the first to third voltages is below a set value. The voltage monitoring unit provides the clock signal to the processor when the voltage levels of all the first to third voltages exceed the set value.

公开(公告)号：US20180258877A1

公开(公告)日：2018-09-13

申请号：US15759584

申请日：2016-09-07

申请人： DENSO CORPORATION

发明人： Nobuyuki SATAKE

IPC分类号： F02D41/40 ,  F02D41/20

CPC分类号： F02D41/40 ,  F02D41/20 ,  F02D41/247 ,  F02D41/34 ,  F02D45/00 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/286 ,  F02D2041/389 ,  F02M51/04 ,  F02M51/061 ,  F02M57/02 ,  Y02T10/44

摘要： An ECU includes an injection controller that performs a partial lift injection in which a fuel injection valve is drivingly opened by an injection pulse by which a lift amount of a valve body of the fuel injection valve does not reach a full lift position, a first calculation section that calculates a first parameter correlated with an amount of induced electromotive force generated by a magnetic flux change during movement of the valve body to a closed position after OFF of the injection pulse of the partial lift injection, a second calculation section that calculates, based on a time-series change of the induced electromotive force after OFF of the injection pulse of the partial lift injection, a second parameter correlated with a voltage inflection point generated with reaching of the valve body to the closed position, and a correction section that corrects a time length of the injection pulse based on the first parameter and the second parameter.

公开(公告)号：US20180230924A1

公开(公告)日：2018-08-16

申请号：US15751272

申请日：2016-08-25

申请人： DENSO CORPORATION

发明人： Makoto TANAKA ,  Syohei FUJITA

IPC分类号： F02D41/20 ,  F02D41/34 ,  F02D41/36 ,  F02D45/00 ,  F02M51/06

CPC分类号： F02D41/20 ,  F02D41/34 ,  F02D41/36 ,  F02D41/40 ,  F02D45/00 ,  F02D2041/1433 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02D2200/0618 ,  F02M51/00 ,  F02M51/06 ,  F02M51/061 ,  F02M51/0675 ,  F02M61/10 ,  F16K31/0627 ,  Y02T10/44

摘要： An injection control device controls a fuel injection valve driven by an electric power. The injection control device includes a current detection unit to detect a driving current supplied to a solenoid of the fuel injection valve, an identification unit to identify a theoretical model of the driving current in a state where a movable core moved by an electromagnetic force generated by the solenoid is at rest, and a state detection unit to detect a state of the movable core. The state detection unit detects the state of the movable core, based on a deviation between the driving current detected by the current detection unit and the theoretical model.

公开(公告)号：US20180195451A1

公开(公告)日：2018-07-12

申请号：US15741604

申请日：2016-07-06

申请人： Hitachi Automotive Systems, Ltd.

发明人： Shinya MATOHARA ,  Yoshihiko AKAGI ,  Seiji ASANO ,  Kazuhiro ORYOJI

IPC分类号： F02D41/14 ,  F02D41/00 ,  F02P5/15

CPC分类号： F02D41/144 ,  F02D41/0002 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/0072 ,  F02D41/0077 ,  F02D41/04 ,  F02D41/14 ,  F02D43/00 ,  F02D45/00 ,  F02D2200/0418 ,  F02M25/08 ,  F02M26/46 ,  F02P5/15 ,  F02P5/1516

摘要： An EGR rate estimation method using an EGR valve opening area involves aggravated EGR rate estimation accuracy as an EGR valve is deteriorated and is unable to satisfy required accuracy when a target EGR rate is high. With a method for correcting a fuel injection amount by a fuel injection valve through estimation of a purge air-fuel ratio on the basis of variations in an air-fuel ratio variable depending on whether purging is performed, the fuel injection correction fails to accommodate the change in the air-fuel ratio when concentration of fuel evaporative emissions adsorbed by an activated carbon of a canister is high, resulting in reduced conversion efficiency of a catalyst. An arrangement includes an introduction port that is disposed in an intake pipe and through which a gas other than fresh air flows in the intake pipe and humidity sensors disposed upstream and downstream, respectively, of the introduction port. The EGR rate or the purge air-fuel ratio in the intake pipe is estimated using detection values of the respective humidity sensors.

公开(公告)号：US20180163661A1

公开(公告)日：2018-06-14

申请号：US15835668

申请日：2017-12-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Shinya OHORI ,  Junji HYODO

IPC分类号： F02D41/38 ,  F02D41/22 ,  B60W10/06

CPC分类号： F02D41/3845 ,  B60W10/06 ,  B60W2050/021 ,  F02D41/06 ,  F02D41/068 ,  F02D41/22 ,  F02D41/222 ,  F02D41/38 ,  F02D45/00 ,  F02D2041/223 ,  F02D2041/224 ,  F02D2200/0414 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/501

摘要： After a system-off state has continued for a preset, time period since a system-off operation, on satisfaction of abnormality diagnosis prerequisites including a condition that a warm-up determination parameter indicating a degree of warm-up of an engine at a system-off time is equal to or greater than a predetermined value, characteristic abnormality diagnosis is performed to determine whether a characteristic abnormality occurs in a fuel pressure sensor. For a time period from a system-on operation to a system-off operation, the warm-up determination parameter is incremented when the engine is in operation, while being decremented after satisfaction of a predetermined condition when the engine is not in operation.

公开(公告)号：US20180058356A1

公开(公告)日：2018-03-01

申请号：US15558277

申请日：2016-03-11

申请人： Yanmar Co., Ltd.

发明人： Hirotoshi KIHARA ,  Hirotaka NAKAMURA ,  Shiro TANIHARA ,  Kyoko HASHIMOTO ,  Makoto ASAI ,  Takafumi KUBO

IPC分类号： F02D41/14

CPC分类号： F02D41/1402 ,  F02D29/00 ,  F02D45/00 ,  F02D2200/024 ,  F02D2200/1002

摘要： In cases where a control device determines that a load is continuously less than a predetermined value for a predetermined period, the control device executes a first control to maintain the engine speed at a first rotation speed or higher, and when the control device determines that the load reached the predetermined value within the predetermined time, the control device executes a second control to maintain the engine speed at a second rotation speed or higher, which is higher than the first rotation speed. This provides a control device for an engine and an engine, which can restrain activation of an oil pressure switch attributed to an oil temperature.

公开(公告)号：US20180051615A1

公开(公告)日：2018-02-22

申请号：US15560963

申请日：2016-02-29

申请人： ISUZU MOTORS LIMITED

发明人： Teruo NAKADA ,  Takayuki SAKAMOTO ,  Daiji NAGAOKA ,  Hiroyuki YUZA

IPC分类号： F01N9/00 ,  F01N3/20

CPC分类号： F01N9/005 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/20 ,  F01N3/36 ,  F01N9/002 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/14 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1631 ,  F02D41/0235 ,  F02D45/00 ,  Y02T10/47

摘要： An exhaust purification system includes; a catalyst provided in an exhaust passage of an engine to purify an exhaust gas; a catalyst temperature estimating unit that estimates a temperature of the catalyst based on an initial temperature of the catalyst at the time of starting of the engine and a caloric value of the catalyst which changes depending on an operating state of the internal combustion engine; and an initial catalyst temperature setting unit that sets an initial temperature of the catalyst based on a catalyst temperature stored immediately before stopping the engine, a temperature of an exhaust gas flowing into the catalyst which is stored immediately before stopping the engine, a temperature of an exhaust gas flowing into the catalyst which is acquired at the time of starting the engine, and a temperature of air taken into the engine which is acquired at the time of starting the engine.