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公开(公告)号：US11703418B2
公开(公告)日：2023-07-18
申请号：US17699449
申请日：2022-03-21
Applicant: Mitsubishi Electric Corporation
Inventor： Tatsuhiko Takahashi , Yuhei Matsushima , Junichi Inoue , Toshikatsu Saito , Keiichi Arita , Kazuyo Kako
CPC classification number: G01M15/06 , F02D41/009 , F02D41/28 , F02D2041/286 , F02D2200/024
Abstract: To provide a controller for internal combustion engine which suppresses that estimation of the combustion state is performed based on the angle information on which the component due to the torsional vibration is superimposed, when the torsional vibration occurs in the crankshaft. A controller for internal combustion engine determines whether a torsional vibration occurs in a crankshaft based on an angle period; calculates a gas pressure torque in burning based on a crank angle acceleration which is calculated based on the angle period; estimates a combustion state of an internal combustion engine based on the gas pressure torque in burning; and stops estimation of the combustion state, when it is determined that the torsional vibration occurred.
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公开(公告)号：US20220333544A1
公开(公告)日：2022-10-20
申请号：US17673210
申请日：2022-02-16
Applicant: Mitsubishi Electric Corporation
Inventor： Yuhei Matsushima , Tatsuhiko Takahashi , Junichi Inoue , Toshikatsu Saito , Kazuhiro Tokuyama , Kazuyo Kako
Abstract: To provide a controller and a control method for internal combustion engine which can calculate the shaft torque in unburning with good accuracy in all the operating condition in which calculation is required, using the shaft torque in unburning which was set in the specific operating condition, and can improve estimation accuracy of the parameter relevant to the combustion state. A controller for internal combustion engine calculates a specific shaft torque in unburning with reference to a specific unburning condition data; calculates specific and current generated torques of unburning assumption using the physical model equation; calculates a current shaft torque in unburning based on the specific shaft torque in unburning, and the specific and current generated torques of unburning assumption; and calculates an increment of gas pressure torque by burning based on the current shaft torque in unburning and the actual shaft torque in burning condition.
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公开(公告)号：US11480121B2
公开(公告)日：2022-10-25
申请号：US17503483
申请日：2021-10-18
Applicant: Mitsubishi Electric Corporation
Inventor： Yuhei Matsushima , Tatsuhiko Takahashi , Junichi Inoue , Toshikatsu Saito , Kazuhiro Tokuyama , Kazuyo Kako
Abstract: To provide a controller and a control method for internal combustion engine which can reduce arithmetic load, while suppressing deterioration in the estimation accuracy of the parameter relevant to the combustion state, even if the error component of high frequency is included in the crank angle acceleration. A controller for internal combustion engine, by referring an unburning condition data, calculates a shaft torque in unburning in the vicinity of the top dead center in the burning condition; calculates an external load torque based on calculated shaft torque in unburning and the actual shaft torque in burning in the vicinity of the top dead center; calculates a shaft torque in unburning by referring the unburning condition data; calculates an increment of gas pressure torque by burning based on the shaft torque in unburning, the actual shaft torque in burning, and the external load torque.
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公开(公告)号：US20220220910A1
公开(公告)日：2022-07-14
申请号：US17503483
申请日：2021-10-18
Applicant: Mitsubishi Electric Corporation
Inventor： Yuhei Matsushima , Tatsuhiko Takahashi , Junichi Inoue , Toshikatsu Saito , Kazuhiro Tokuyama , Kazuyo Kako
Abstract: To provide a controller and a control method for internal combustion engine which can reduce arithmetic load, while suppressing deterioration in the estimation accuracy of the parameter relevant to the combustion state, even if the error component of high frequency is included in the crank angle acceleration. A controller for internal combustion engine, by referring an unburning condition data, calculates a shaft torque in unburning in the vicinity of the top dead center in the burning condition; calculates an external load torque based on calculated shaft torque in unburning and the actual shaft torque in burning in the vicinity of the top dead center; calculates a shaft torque in unburning by referring the unburning condition data; calculates an increment of gas pressure torque by burning based on the shaft torque in unburning, the actual shaft torque in burning, and the external load torque.
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公开(公告)号：US09541012B2
公开(公告)日：2017-01-10
申请号：US13908502
申请日：2013-06-03
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Toshikatsu Saito , Michihisa Yokono , Tomokazu Makino
CPC classification number: F02D23/00 , F02B37/18 , F02D13/0238 , F02D13/0269 , F02D41/0007 , F02D41/145 , F02D2200/0402 , F02D2200/0406 , F02D2200/0411 , F02D2200/0414 , Y02T10/142 , Y02T10/144 , Y02T10/18
Abstract: In a turbocharged internal combustion engine, an amount of cylinder suction air is calculated with sufficiently high accuracy to suitably control the internal combustion engine in consideration of influences of an exhaust pressure on a volumetric efficiency equivalent value without requiring a huge memory capacity, in fewer adaptive man hours, and under a low operation load. A correction calculation parameter is calculated using an exhaust pressure, an exhaust pressure for pre-correction volumetric efficiency equivalent value, and an intake manifold pressure, and a post-corrected volumetric efficiency equivalent value is calculated by correcting a pre-correction volumetric efficiency equivalent value using the correction calculation parameter. An amount of air entering a cylinder from an intake manifold is calculated on the basis of the post-correction volumetric efficiency equivalent value.
Abstract translation: 在涡轮增压内燃机中，以足够高的精度计算出一定量的气缸吸入空气，以便考虑到排气压力对容积效率当量值的影响而适当地控制内燃机，而不需要大的存储容量，在较少的适应性 工作时间小，运行负荷低。 使用排气压力，预校正体积效率当量值的排气压力和进气歧管压力来计算校正计算参数，并且通过校正预校正容积效率当量值来计算校正后的体积效率当量值 使用校正计算参数。 基于校正后体积效率当量值来计算从进气歧管进入气缸的空气量。
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Patent Agency Ranking
公开(公告)号：US11555462B2
公开(公告)日：2023-01-17
申请号：US17673210
申请日：2022-02-16
Applicant: Mitsubishi Electric Corporation
Inventor： Yuhei Matsushima , Tatsuhiko Takahashi , Junichi Inoue , Toshikatsu Saito , Kazuhiro Tokuyama , Kazuyo Kako
Abstract: To provide a controller and a control method for internal combustion engine which can calculate the shaft torque in unburning with good accuracy in all the operating condition in which calculation is required, using the shaft torque in unburning which was set in the specific operating condition, and can improve estimation accuracy of the parameter relevant to the combustion state. A controller for internal combustion engine calculates a specific shaft torque in unburning with reference to a specific unburning condition data; calculates specific and current generated torques of unburning assumption using the physical model equation; calculates a current shaft torque in unburning based on the specific shaft torque in unburning, and the specific and current generated torques of unburning assumption; and calculates an increment of gas pressure torque by burning based on the current shaft torque in unburning and the actual shaft torque in burning condition.
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公开(公告)号：US11473517B1
公开(公告)日：2022-10-18
申请号：US17673264
申请日：2022-02-16
Applicant: Mitsubishi Electric Corporation
Inventor： Yuhei Matsushima , Tatsuhiko Takahashi , Junichi Inoue , Toshikatsu Saito , Kazuyo Kako
Abstract: To provide a controller and a control method for internal combustion engine which can set appropriately an angle interval for estimating the combustion state in accordance with change of a burning angle interval, and can reduce calculation processing load for estimation of the combustion state. A controller for internal combustion engine changes the estimation crank angle interval based on an operating condition of the internal combustion engine; calculates an increment of gas pressure torque by burning at each crank angle of the estimation crank angle interval; and estimates the combustion state of the internal combustion engine, based on the increment of gas pressure torque by burning in the estimation crank angle interval.
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公开(公告)号：US11674493B2
公开(公告)日：2023-06-13
申请号：US17763030
申请日：2019-12-04
Applicant: Mitsubishi Electric Corporation
Inventor： Junichi Inoue , Yuhei Matsushima , Toshikatsu Saito
CPC classification number: F02P5/152 , F02D13/0215 , F02D35/027 , F02D2200/025
Abstract: To provide a controller and a control method for internal combustion engine which can suppress the increase in the calculation processing load for determining occurrence of the mechanical noise and occurrence of the knocking with good accuracy even when the mechanical noise occurs. When the maximum value of the strength of the component of the second frequency band in the comparison period exceeds the maximum value of the strength of the component of the first frequency band, a controller for internal combustion engine performs a second side stop determination processing that determine whether the knocking occurred, based on the strength of the component of the first frequency band, without using the strength of the component of the second frequency band.
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公开(公告)号：US10451024B2
公开(公告)日：2019-10-22
申请号：US15652354
申请日：2017-07-18
Applicant: Mitsubishi Electric Corporation
Inventor： Junichi Inoue , Yuhei Matsushima , Toshikatsu Saito
Abstract: Knocking and pre-ignition are identified, without contributing to pre-ignition, even when vibration magnitudes and timings of occurrence of the knocking and pre-ignition are the same. When detecting an abnormal combustion that cannot be identified as a knocking or pre-ignition, ignition timing is advanced, at which time knocking is identified when an abnormal combustion intensity increases, and pre-ignition is identified when a difference between ignition timing and abnormal combustion occurrence timing increases.
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公开(公告)号：US09957904B2
公开(公告)日：2018-05-01
申请号：US14243577
申请日：2014-04-02
Applicant: Mitsubishi Electric Corporation
Inventor： Toshikatsu Saito , Yuhei Matsushima
CPC classification number: F02D37/00 , F02D13/0207 , F02D13/0265 , F02D35/023 , F02D35/026 , F02D41/3035 , F02D41/401 , F02D2041/001 , Y02T10/18 , Y02T10/44
Abstract: When the starting timing of a negative valve overlapping (NVO) period exists at the delayed-angle side of the starting timing of a first NVO period, fuel injection into a cylinder is not started; when the starting timing of an NVO period exists between the starting timing of the first NVO period and the starting timing of the second NVO period, fuel injection into the cylinder is started at a given timing that includes the exhaust top dead center; when the starting timing of an NVO period exists between the starting timing of the second NVO period and the starting timing of the third NVO period, fuel injection into the cylinder is started at a given timing that does not include the exhaust top dead center, and that exists at both the advanced-angle and delayed-angle sides of the exhaust top dead center.
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