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1.发明授权公开(公告)号：US09964027B2
公开(公告)日：2018-05-08
申请号：US15131526
申请日：2016-04-18
CPC分类号： F02B37/18 , F02D23/00 , F02D41/0007 , F02D41/18 , F02D41/2432 , F02D2200/0406 , F02D2200/101 , F02D2200/703 , F02D2250/34 , Y02T10/144 , Y02T10/42
摘要： The objective of the present invention is to provide a controller for a supercharger-equipped internal combustion engine and a control method that can reduce man-hours for data measurement and matching, which are required to perform while the internal combustion engine and the supercharger are combined. In a controller, a target turbine flow rate for realizing a target compressor driving force is calculated; a target wastegate flow rate is calculated based on an exhaust gas flow rate and the target turbine flow rate; a target turbine-upstream pressure is calculated based on a target before/after-turbine pressure ratio for realizing the target compressor driving force and a turbine-downstream pressure; a target gate effective opening area is calculated based on the target wastegate flow rate, the target before/after-turbine pressure ratio, and the target turbine-upstream pressure; then, a gate valve control value is calculated.
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公开(公告)号：US09957883B2
公开(公告)日：2018-05-01
申请号：US15137199
申请日：2016-04-25
发明人： Junichi Inoue , Takahiko Ono , Toshiaki Maruo , Takafumi Nishio , Yugou Sunagare
CPC分类号： F02B37/183 , F02D11/105 , F02D41/0007 , F02D41/1445 , F02D41/18 , F02D2041/1409 , F02D2041/1433 , F02D2250/18 , Y02T10/144 , Y02T10/42
摘要： A controller, for a supercharger-equipped internal combustion engine, that can improve the feedback response of compressor driving force is provided. In a controller, inertial force produced by an inertial moment of a supercharger is calculated, based on a real rotation speed of the supercharger; then, driving force feedback control is implemented in which a gate valve control value, which is a control value for a gate valve actuator, is changed so that an addition value obtained by adding the inertial force to the real compressor driving force approaches a target compressor driving force.
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公开(公告)号：US10436106B2
公开(公告)日：2019-10-08
申请号：US15268732
申请日：2016-09-19
发明人： Takahiko Ono , Takafumi Nishio
摘要： A required opening correction amount is calculated based on a target supercharging pressure and an actual supercharging pressure, a target opening is calculated based on a required opening and the required opening correction amount, an actual operating position of a wastegate valve is determined to correspond to a fully closed position when the wastegate valve is in a fully closed condition, an actual opening of the wastegate valve is calculated based on the fully closed position and the actual operating position, an operation amount of an actuator for aligning the target opening with the actual opening is calculated based on the target opening and the actual opening, and when the target opening corresponds to the fully closed condition and the actual operating position is not decreased at or above a prescribed rate, the fully closed position is updated to the actual operating position.
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4.发明授权公开(公告)号：US10006351B2
公开(公告)日：2018-06-26
申请号：US15262153
申请日：2016-09-12
发明人： Toshiaki Maruo , Takahiko Ono , Takafumi Nishio
CPC分类号： F02B37/186 , F02B37/18 , F02D23/00 , F02D41/0007 , F02D2041/1409 , F02D2200/0406 , Y02T10/144
摘要： A controller is provided, which detects operating conditions of an internal combustion engine on the basis of detection results from a group of sensors and drives an actuator that modifies an opening position of a wastegate valve on the basis of the operating conditions. When driving the wastegate valve to a fully closed opening, the controller initially drives the actuator toward a preset provisional fully closed position, and after determining on the basis of a detection result from a position sensor that an actual opening of the wastegate valve has reached the provisional fully closed opening, switches a target opening to the fully closed opening and drives the actuator accordingly.
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公开(公告)号：US10787980B2
公开(公告)日：2020-09-29
申请号：US16343186
申请日：2017-10-05
摘要： In a predetermined operating region, a fuel injection valve executes a second injection to inject fuel into a cylinder in a compression stroke, and a first injection to inject fuel into the cylinder 2 in the compression stroke or an intake stroke before the second injection. When a purge is executed, the total quantity of fuel to be injected by the fuel injection valve into the cylinder is reduced more than when the purge is not executed, and a fuel reduction quantity of the second injection is made smaller than a fuel reduction quantity of the first injection.
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公开(公告)号：US10208661B2
公开(公告)日：2019-02-19
申请号：US15126986
申请日：2015-02-18
发明人： Takafumi Nishio
IPC分类号： F02B39/16 , F02B37/16 , F02B37/18 , F02D9/04 , F02D23/00 , F02D41/00 , F02D41/22 , F01N3/08 , F01N3/10 , F01N13/00
摘要： When it is detected that an exhaust cut valve is stuck in a closed state, a control device stops feedback control and maintains a wastegate valve in a completely open state in each of an open operation range and a closed operation range. When it is detected that the exhaust cut valve is stuck in an open state, the control device stops the feedback control and maintains the wastegate valve in the completely open state in the closed operation range, whereas the control device performs the feedback control in the open operation range.
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公开(公告)号：US20170030260A1
公开(公告)日：2017-02-02
申请号：US15217916
申请日：2016-07-22
发明人： Takafumi Nishio
CPC分类号： F02B37/183 , F02B33/40 , F02B37/18 , F02B39/08 , F02D41/0007 , F02D41/1401 , F02D41/1445 , F02D41/2464 , F02D2041/1409 , F02D2041/1422 , F02D2041/1433 , F02D2200/0406 , F02M35/10157 , Y02T10/144
摘要： To improve the controllability of the feedback control of the boost pressure, an ECU comprises a valve control part that feedback controls a boost pressure of a turbocharger based on a deviation between a target boost pressure and an actual boost pressure, and a determination part that determines whether or not the exhaust state in an exhaust passage can achieve the target boost pressure, and the feedback control includes at least an integral term, and when the determination part determines the exhaust state cannot achieve the target boost pressure, the valve control part reduces the influence of the deviation on the calculation of integral term compared with that when the exhaust state can achieve the target boost pressure.
摘要翻译： 为了提高对增压压力的反馈控制的可控性，ECU包括阀控制部，其基于目标增压压力和实际增压压力之间的偏差来反馈控制涡轮增压器的增压压力，以及确定部 排气通道中的排气状况是否能够达到目标增压压力，并且反馈控制至少包括积分项，并且当确定部件确定排气状态不能达到目标增压压力时，阀控制部件减小 与排气状态达到目标增压压力时的偏差对积分项计算的影响。
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公开(公告)号：US20220120212A1
公开(公告)日：2022-04-21
申请号：US17464972
申请日：2021-09-02
摘要： An engine control device is provided, which includes a blowby gas passage connecting an engine body to an intake passage so that blowby gas leaked from a combustion chamber is recirculated to the intake passage, a boost pressure changer configured to change a boost pressure of a turbocharger, and a controller configured to set a target boost pressure and control the boost pressure changer. The turbocharger includes a turbine which is provided to an exhaust passage and driven by exhaust gas, and a compressor which is provided to the intake passage and rotary driven by the turbine to boost intake air. The blowby gas passage is connected to the intake passage near the compressor. The controller corrects the target boost pressure when an ambient temperature is below a given determination temperature, to be higher than the target boost pressure when the ambient temperature is at or above the determination temperature.
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公开(公告)号：US11078876B2
公开(公告)日：2021-08-03
申请号：US16660053
申请日：2019-10-22
发明人： Yuri Sakamoto , Tomohiro Kanaya , Takafumi Nishio
摘要： An estimation unit estimates a fuel pressure on a discharge side of a high-pressure pump based on an amount of fuel injection with a fuel injection valve from a time point at which a detected fuel pressure changes from a higher status than a first pressure to a lower status, assuming that the fuel has not been discharged with the high-pressure pump. The determination unit determines that a relief valve is in an open status based on a dropping mode of the estimated fuel pressure and a dropping mode of the detected fuel pressure.
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公开(公告)号：US10309298B2
公开(公告)日：2019-06-04
申请号：US15217916
申请日：2016-07-22
发明人： Takafumi Nishio
IPC分类号： F02B37/18 , F02D23/00 , F02B33/40 , F02B39/08 , F02M35/10 , F02D41/00 , F02D41/14 , F02D41/24
摘要： To improve the controllability of the feedback control of the boost pressure, an ECU comprises a valve control part that feedback controls a boost pressure of a turbocharger based on a deviation between a target boost pressure and an actual boost pressure, and a determination part that determines whether or not the exhaust state in an exhaust passage can achieve the target boost pressure, and the feedback control includes at least an integral term, and when the determination part determines the exhaust state cannot achieve the target boost pressure, the valve control part reduces the influence of the deviation on the calculation of integral term compared with that when the exhaust state can achieve the target boost pressure.
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