公开(公告)号：US10167790B2

公开(公告)日：2019-01-01

申请号：US15423656

申请日：2017-02-03

Applicant: Mitsubishi Electric Corporation

Inventor： Hideki Hagari ,  Michihisa Yokono

IPC: F02D41/00 ,  F02D41/14 ,  F02M26/47 ,  F02D41/24 ,  F02M26/00

Abstract: To provide a controller and a control method for an internal combustion engine capable of reducing the calculation error of recirculation exhaust gas amount due to changes with time of the internal combustion engines, and humidity change of intake air, and also capable of reducing the calculation error of recirculation exhaust gas amount at transient operation. The controller and the control method for the internal combustion engine calculates humidity detecting EGR rate based on intake-air humidity and manifold humidity, calculates humidity detecting opening area which realizes humidity detecting recirculation flow rate calculated based on humidity detecting EGR rate, calculates learned opening area corresponding to present opening degree of EGR valve using learning value of opening area calculated based on humidity detecting opening area, and calculates flow rate of recirculation exhaust gas for control based on learned opening area.

公开(公告)号：US09863347B2

公开(公告)日：2018-01-09

申请号：US15131068

申请日：2016-04-18

Applicant: Mitsubishi Electric Corporation

Inventor： Michihisa Yokono ,  Hideki Hagari

IPC: F02D41/02 ,  F02D37/02 ,  F02D41/00 ,  F02D41/30 ,  F02D41/32 ,  F02P5/15 ,  F02P5/04

CPC classification number: F02D41/021 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/3005 ,  F02D41/32 ,  F02D2200/0418 ,  F02P5/045 ,  F02P5/15 ,  Y02T10/42 ,  Y02T10/46

Abstract: The control device includes an operation state detector, an intake manifold pressure detector, an air humidity detector, an air temperature detector, an atmospheric pressure detector, and a controller that controls the engine output on the basis of detection results of the detectors. The controller generates humidity information on the air which is taken in by the internal combustion engine, from the humidity, temperature, and atmospheric pressure, calculates a dry air partial pressure by correcting the pressure detected by the intake manifold pressure detector, by using the humidity information, and controls the engine output by taking the pressure detected by the intake manifold pressure detector as a wet air pressure and selecting, according to a control element, either one of the wet air pressure and the dry air partial pressure as a pressure to be used for the engine output control.

公开(公告)号：US09267426B2

公开(公告)日：2016-02-23

申请号：US13917875

申请日：2013-06-14

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Tomokazu Makino ,  Michihisa Yokono

IPC: F02D23/00 ,  F02B37/12 ,  F02B37/18 ,  F02D41/00

CPC classification number: F02B37/127 ,  F02B37/18 ,  F02D41/0007 ,  F02D2200/101 ,  F02D2200/602 ,  F02D2250/34 ,  Y02T10/144

Abstract: A desired wastegate valve opening degree is set in accordance with a driving condition of an internal combustion engine; based on a detected rotation speed of the internal combustion engine and a set desired wastegate valve opening degree. An ECU determines whether or not supercharging air to the internal combustion engine is required. If the supercharging air is not required and if the opening degree of the wastegate valve becomes a desired valve, a driving current supplied to the wastegate actuator from a wastegate valve driving unit is stopped.

Abstract translation: 根据内燃机的驱动条件设定所需的废气门开度; 基于检测到的内燃机的转速和设定的期望的废气门开度。 ECU判断是否需要向内燃机增压空气。 如果不需要增压空气，并且如果废气门阀的开度变为期望的阀，则停止从废气门阀驱动单元供给废气门执行器的驱动电流。

公开(公告)号：US09181860B2

公开(公告)日：2015-11-10

申请号：US14250931

申请日：2014-04-11

Applicant: Mitsubishi Electric Corporation

Inventor： Michihisa Yokono ,  Hideki Hagari

IPC: F02B37/18 ,  F02B37/16 ,  F02D41/00 ,  F02D9/02 ,  F02D43/00 ,  F02B37/22

CPC classification number: F02B37/18 ,  F02B37/22 ,  F02D9/02 ,  F02D11/105 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/1445 ,  F02D41/1454 ,  F02D41/18 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0408 ,  F02D2200/602 ,  F02D2200/703 ,  Y02T10/144

Abstract: Provided are a control device and a control method for an internal combustion engine, which enable a throttle-valve upstream pressure through simple calculation processing without being affected by a state of an opening degree of a wastegate valve (WGV). When a wastegate (WG) command value to a WGV driving section (212) for driving a WGV (33a) provided in a bypass passage (33) which bypasses a turbocharger (32) is to control supercharging to be weakened to the lowest level, the throttle-valve upstream pressure is estimated from an exhaust-gas amount. Otherwise, a value obtained by adding a preset value to an intake-manifold pressure is used as a throttle-valve upstream pressure estimate value. As a result, the throttle-valve upstream pressure is estimated with high accuracy by an inexpensive configuration without mounting a throttle-valve upstream pressure sensor, and then engine control is performed.

Abstract translation: 提供一种用于内燃机的控制装置和控制方法，其能够通过简单的计算处理使节流阀上游压力不受废气门阀（WGV）的开度的状态的影响。 当用于驱动旁路涡轮增压器（32）的旁路通路（33）中设置的WGV（33a）的WGV驱动部（212）的废气门（WG）指令值为控制增压降至最低水平时， 从排气量估计节流阀上游压力。 另外，作为节流阀上游侧压力推定值使用通过将预先设定的值加到进气歧管压力而获得的值。 结果，在不安装节流阀上游压力传感器的情况下，通过廉价的构造，以高精度估计节气门上游压力，然后进行发动机控制。