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公开(公告)号：US10006383B2
公开(公告)日：2018-06-26
申请号：US14596347
申请日：2015-01-14
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
CPC classification number: F02D41/0007 , F02D23/00 , F02D41/18 , F02D2200/0402 , F02D2200/0406 , F02D2200/0414 , Y02T10/144
Abstract: In a control device and method for an internal combustion engine with a supercharger, a first/second temperature sensor and a first/second air pressure sensor are respectively provided on an upstream/downstream side of a supercharging path from a compressor to a throttle valve. A control portion calculates an inflow air mass to the supercharging path and an outflow air mass from the supercharging path, calculates a throttle upstream air mass in a high operational load state from those air masses, calculates a throttle upstream air mass in a low operational load state from outputs of the first temperature sensor and the first air pressure sensor, selects either one of the throttle upstream air masses depending on an operational load state of the engine, and calculates a throttle upstream pressure based on the upstream air mass selected and a second temperature detected by the second temperature sensor.
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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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公开(公告)号：US10156212B2
公开(公告)日：2018-12-18
申请号：US15193265
申请日：2016-06-27
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
Abstract: There is provided an internal combustion engine controller and a control method thereof that can accurately estimate an EGR rate even when the humidity of intake air (the atmospheric air) changes. In the internal combustion engine controller and the control method thereof, an EGR rate is calculated based on an inner-manifold water vapor partial pressure ratio calculated based on a manifold pressure, a manifold temperature, and a manifold humidity and an inner-intake-air water vapor partial pressure ratio calculated based on an intake-air pressure, an intake-air temperature, and an intake-air humidity.
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公开(公告)号：US09897024B2
公开(公告)日：2018-02-20
申请号：US15062307
申请日：2016-03-07
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
CPC classification number: F02D41/021 , F02D41/0002 , F02D41/144 , F02D41/18 , F02D41/182 , F02D41/187 , F02D41/26 , F02D2200/0418 , F02D2200/703 , F02P5/15 , Y02T10/42
Abstract: In an engine control device, a saturated water vapor pressure Ps is calculated from an intake temperature detected by an intake air temperature sensor. A water vapor partial pressure is worked out from the saturated water vapor pressure and humidity detected by a humidity sensor. A specific humidity q and a molar fraction are worked out from the water vapor partial pressure and an atmospheric pressure detected by an atmospheric pressure sensor. A moist air amount is calculated from an intake air amount detected by an AFS on the basis of the molar fraction, and a dry air amount is calculated from this moist air amount on the basis of the specific humidity. A fuel injection amount, an ignition timing, and a target throttle opening are then calculated on the basis of various operation information, using the moist air amount, the dry air amount, and the specific humidity.
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5.发明授权公开(公告)号：US09062596B2
公开(公告)日：2015-06-23
申请号：US14055340
申请日：2013-10-16
Applicant: Mitsubishi Electric Corporation
Inventor： Toshiaki Maruo , Michihisa Yokono , Takahiko Ono
CPC classification number: F02B37/183 , F02B37/18 , F02D11/105 , F02D41/0007 , F02D2200/0404 , F02D2200/0406 , F02D2200/101 , F02D2200/602 , Y02T10/144
Abstract: Provided are a wastegate valve control device for an internal combustion engine and a wastegate valve control method for an internal combustion engine, which are capable of controlling a wastegate valve (WGV) to a desired open/closed state at low cost even when a reference position of the WGV is shifted from a full-closure position of the WGV. When a target WGV opening (control target value) is equal to or smaller than a threshold opening, a given opening is added to or subtracted from the target WGV opening while the WGV is controlled to perform an opening/closing operation based on the target WGV opening. By monitoring a change in throttle upstream pressure or driving current of a WGV actuator, an optimal target WGV opening corresponding to the shift of the reference position with respect to the full-closure position of the WGV is determined.
Abstract translation: 提供一种用于内燃机的废气门控制装置和用于内燃机的废气门阀控制方法，其能够以低成本将废气门阀（WGV）控制到期望的打开/关闭状态，即使当参考位置 的WGV从WGV的全面关闭位置转移。 当目标WGV打开（控制目标值）等于或小于阈值打开时，给定开口被添加到目标WGV开启中或从目标WGV开启中减去，而WGV被控制以基于目标WGV执行打开/关闭操作 开放 通过监测WGV致动器的油门上游压力或驱动电流的变化，确定对应于参考位置相对于WGV的全闭合位置的偏移的最佳目标WGV开度。
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Patent Agency Ranking
公开(公告)号：US09856802B2
公开(公告)日：2018-01-02
申请号：US14955181
申请日：2015-12-01
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
CPC classification number: F02D41/0007 , F02B37/18 , F02D41/1448 , F02D41/18 , F02D2200/0402 , F02D2200/0404 , F02D2200/0406 , F02D2200/602 , Y02T10/144
Abstract: There is provided a controller, for a supercharger-equipped internal combustion engine, that can accurately estimate a supercharging pressure, without providing a pressure sensor for detecting the supercharging pressure. In a controller for a supercharger-equipped internal combustion engine, a correction value for correcting a supercharging pressure estimation value is changed so that an effective opening area estimation value, estimated based on a supercharging pressure estimation value and the like, approaches a preliminarily set effective opening area default value corresponding to a throttle opening degree detection value.
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公开(公告)号：US10138831B2
公开(公告)日：2018-11-27
申请号：US15657363
申请日：2017-07-24
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
Abstract: To provide a controller and a control method for an internal combustion engine capable of learning the individual difference and the aging change of the flow characteristic of the EGR valve, by a method which is hardly influenced by the individual difference and the aging change of the internal combustion engine body, and improving the estimation accuracy of the flow rate of recirculation exhaust gas. The controller for an internal combustion engine calculates an oxygen concentration detecting EGR rate Regr based on the inner-manifold oxygen concentration; calculates an oxygen concentration detecting recirculation flow rate based on the oxygen concentration detecting EGR rate and the intake air flow rate, and calculates a learning value of the opening area of EGR valve; and calculates a flow rate of recirculation exhaust gas for control based on the learned opening area.
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8.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
Applicant: Mitsubishi Electric Corporation , Mazda Motor Corporation
Inventor： Hideki Hagari , Takuo Watanuki , Michihisa Yokono , Takafumi Nishio
CPC classification number: F02B37/18 , F02D23/00 , F02D41/0007 , F02D41/18 , F02D41/2432 , F02D2200/0406 , F02D2200/101 , F02D2200/703 , F02D2250/34 , Y02T10/144 , Y02T10/42
Abstract: 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：US09605608B2
公开(公告)日：2017-03-28
申请号：US14302638
申请日：2014-06-12
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
CPC classification number: F02D41/0007 , F02B37/183 , F02B37/225 , F02D11/105 , F02D41/1402 , F02D41/2464 , F02D2041/1432 , F02D2200/0404 , F02D2200/0406 , F02D2200/0408 , F02D2200/101 , F02D2200/602 , Y02T10/144
Abstract: In the control device, a relationship of a throttle-upstream pressure with respect to an exhaust-gas amount is used in a state where a supercharge pressure becomes the lowest by a WG-instruction value with respect to a WGV-control component 220 for driving a WGV 33a provided at a bypass passage 33 bypassing a turbocharger 32, and a relationship of a throttle-upstream pressure with respect to an aperture of a throttle valve 23, a rotational speed of an engine, and an intake-manifold pressure is used, and any of the throttle-upstream pressures, whichever is higher, being calculated in accordance with each of the relationship, is defined as a throttle-upstream-estimation value, whereby the throttle-upstream pressure is estimated by a cheap means with high accuracy so as to control the engine.
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公开(公告)号：US10815918B2
公开(公告)日：2020-10-27
申请号：US15635345
申请日：2017-06-28
Applicant: Mitsubishi Electric Corporation
Inventor： Michihisa Yokono , Hideki Hagari
IPC: F02D41/00 , F02B39/10 , F02B37/04 , F02B37/00 , F02B37/16 , F02B37/18 , F02D41/18 , F02D11/10 , F02B37/12
Abstract: To provide a controller and a control method for a supercharger-equipped internal combustion engine capable of assisting the insufficient part of supercharging pressure supercharged by the turbocharger, with a good responsiveness by the electric compressor, using simple calculation, even though using a plurality of superchargers. The controller for a supercharger-equipped internal combustion engine calculates, as a target intermediate supercharging pressure, a value subtracting, from the target supercharging pressure, a pressure difference subtracting the actual intermediate supercharging pressure from the actual supercharging pressure; calculates a pressure ratio of the target intermediate supercharging pressure and the actual atmospheric pressure; calculates a target rotational speed of the electric compressor based on the pressure ratio and the actual intake air flow rate; and controls the electric motor.
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