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公开(公告)号：US20180306069A1
公开(公告)日：2018-10-25
申请号：US15914580
申请日：2018-03-07
发明人： Noriyasu ADACHI , Keisuke SASAKI , Shigehiro SUGIHIRA , Takayoshi KAWAI , Shinji SADAKANE , Hiroyuki SUGIHARA , Kaoru OHTSUKA
IPC分类号： F01L1/047
摘要： Provided is a control device for an internal combustion engine equipped with a cam switching device including a cam groove provided on the outer peripheral surface of a camshaft and an electromagnetic solenoid type actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The control device is configured, in causing the cam switching device to perform a cam switching operation, to perform energization of the actuator such that the engagement pin is seated on a forward outer peripheral surface, and to more lower, when an electric current (coil current) flowing through the actuator as a result of the energization is greater, an average electric voltage per unit time applied to the actuator in protruding the engagement pin toward the cam groove from the forward outer peripheral surface.
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公开(公告)号：US20180052077A1
公开(公告)日：2018-02-22
申请号：US15676093
申请日：2017-08-14
发明人： Noriyasu ADACHI , Tomoya OTA , Hiroshi WATANABE , Yoshio UENO , Takayoshi KAWAI , Aya YAMADA
CPC分类号： G01M15/046 , F02B75/045 , F02B77/083 , F02D15/02 , F02D41/0087 , F02D41/123 , F02D41/1497 , F02D41/221 , F02D2200/101 , Y02T10/40
摘要： An object is to carry out an abnormality diagnosis for a variable compression ratio mechanism without adding any special hardware configuration for estimating a compression ratio. An abnormality diagnostic device for a variable compression ratio mechanism adapted to be applied to an internal combustion engine comprises a controller configured to calculate a predetermined rotational speed difference which is a rotational speed difference, between an engine rotational speed at a predetermined crank angle before or after compression top dead center and an engine rotational speed in the vicinity of the compression top dead center for a predetermined cylinder at the time of carrying out fuel cut processing, set a reference range of the predetermined rotational speed difference, and make a diagnosis that abnormality has occurred in the variable compression ratio mechanism when the predetermined rotational speed difference is out of the reference range.
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公开(公告)号：US20200247390A1
公开(公告)日：2020-08-06
申请号：US16749995
申请日：2020-01-23
发明人： Ryosuke IKEMURA , Naoto KATO , Takayoshi KAWAI , Teppei YOSHIOKA , Hiromasa HASHIMOTO , Hiroshi WATANABE , Yasuhiro KUZE
摘要： A drive force control system configured to reduce a total energy consumption of a hybrid vehicle. The drive force control system calculates: an output power of the engine which can optimize a thermal efficiency given that the engine is operated at a best fuel point; and a required electric power to be supplied from a battery or to be generated by a control motor, which can adjust the drive power established by the output power of the engine to the required power. A power exchange between the control motor and the battery is interrupted if the required electric power to be supplied from the electric storage device or to be generated by the control motor is less than a first predetermined electric power.
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公开(公告)号：US20190135103A1
公开(公告)日：2019-05-09
申请号：US16180117
申请日：2018-11-05
发明人： Yasuhiro KUZE , Naoya TAKAGI , Teruhiko MIYAKE , Naoto KATO , Takayoshi KAWAI , Teppei YOSHIOKA
摘要： A vehicle control system, in which that maintains a reaction force against the backward movement of a vehicle while preventing an overheating of a motor due to phase lock of the motor. When a thermal load on a specific phase of the motor exceeds a threshold value, a controller execute a phase shift control to reduce a thermal load on a specific phase of the motor by changing a rotational angle of the motor, while interrupting torque transmission between the motor and wheels and generating the torque to stop the vehicle by the actuator.
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公开(公告)号：US20190263249A1
公开(公告)日：2019-08-29
申请号：US16263108
申请日：2019-01-31
发明人： Takayoshi KAWAI , Naoto Kato , Naoya Takagi , Yasuhiro Kuze , Teruhiko Miyake , Teppei Yoshioka
摘要： An engine starting system for starting an engine promptly during propulsion without reducing a drive force. When a condition to crank the engine is satisfied during propulsion in a neutral stage, torque is applied to an input rotary element to crank the engine by reducing a rotational speed of a control rotary element by increasing a torque capacity of a first engagement device to utilize an inertial force of the free rotary element as a reaction force.
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公开(公告)号：US20180230869A1
公开(公告)日：2018-08-16
申请号：US15888563
申请日：2018-02-05
发明人： Shigehiro SUGIHIRA , Noriyasu ADACHI , Keisuke SASAKI , Takayoshi KAWAI , Kaoru OTSUKA , Shinji SADAKANE , Hiroyuki SUGIHARA
摘要： In a system that selects a large-cam as a driving cam at a time of a start of an engine, when an engine stop request is output, it is determined whether there is a small-cam cylinder for which a small-cam is selected as the driving cam. In a case where it is determined that there is a small-cam cylinder, a switching command for switching the driving cam from the small-cam to the large-cam is output. When an engine start request is output, the above determination is performed again. In a case where it is determined that there is a small-cam cylinder, the switching command is output to all solenoid actuators again. In addition, the drive of the fuel injector is suspended until the switching operation of the driving cam is completed for all cylinders.
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公开(公告)号：US20180202329A1
公开(公告)日：2018-07-19
申请号：US15810306
申请日：2017-11-13
发明人： Kaoru OHTSUKA , Hiroyuki SUGIHARA , Shinji SADAKANE , Noriyasu ADACHI , Shigehiro SUGIHIRA , Keisuke SASAKI , Takayoshi KAWAI
CPC分类号： F01L13/0036 , F01L1/047 , F01L2013/0052 , F01L2013/101 , F02B75/02 , F02B75/20 , F02B2075/027 , F02B2075/1816 , F02D13/0226 , F02D13/08 , F02D41/042 , F02D2041/001 , Y02T10/18
摘要： When a stop request to the engine is issued, it is determined whether or not all of the drive cams are large cams. When it is determined that at least one of the small cams is included in the drive cams, the engine is continued to drive for a while and a switch control for switching the drive cams from the small cams to the large cams is executed within the duration. A self-holding type solenoid is used to switch between the small cams and the large cams. In the switch control, a permission to stop the engine is output at a timing when the “pin protrudable section” of the final cylinder #2 has elapsed.
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公开(公告)号：US20190010887A1
公开(公告)日：2019-01-10
申请号：US16026948
申请日：2018-07-03
发明人： Keisuke SASAKI , Noriyasu ADACHI , Shigehiro SUGIHIRA , Takayoshi KAWAI , Shinji SADAKANE , Kaoru OTSUKA
摘要： An electronic control unit of a control device for an internal combustion engine executes, for a first cycle, first drive processing for controlling an actuator such that a pin drive operation is executed for switching from a first cam to a second cam, executes second drive processing for controlling the actuator such that the pin drive operation is executed again for a second cycle, and executes abnormality determination processing for determining that a cam switching mechanism has an abnormality in a case where a pin returns to a reference position by using a pin return section following a cam switching section of the first cycle after the execution of the first drive processing and the pin returns to the reference position by using the pin return section following the cam switching section of the second cycle after the execution of-the second drive processing.
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公开(公告)号：US20180274393A1
公开(公告)日：2018-09-27
申请号：US15877437
申请日：2018-01-23
发明人： Takayoshi KAWAI , Noriyasu ADACHI , Shigehiro SUGIHIRA , Keisuke SASAKI , Kaoru OTSUKA , Shinji SADAKANE , Hiroyuki SUGIHARA
CPC分类号： F01L1/047 , F01L1/08 , F01L13/0015 , F01L13/0036 , F01L2013/0052 , F01L2800/01 , F01L2820/04 , F01L2820/041 , F01L2820/042 , F02D41/00 , F02D41/0002 , F02D41/062 , F02D2041/001 , F02D2041/0092 , F16H53/025
摘要： At crank angle CA10 at which the switch request of the drive cam was issued, the ejection operations of the pins at all the solenoid actuators started simultaneously. The ejected pins are seated on the cam carriers at erank angle CA12. The pin seated on the cam carrier moves along the grooves in accordance with the rotation of the cam carrier. The earliest finish timing of the switch operation of the drive cam is at crank angle CA13 (#4 cylinder). At the crank angle CA13, drive of the fuel injector and the ignition device in each cylinder is permitted.
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公开(公告)号：US20180252125A1
公开(公告)日：2018-09-06
申请号：US15864656
申请日：2018-01-08
发明人： Keisuke SASAKI , Noriyasu ADACHI , Shigehiro SUGIHIRA , Takayoshi KAWAI , Shinji SADAKANE , Hiroyuki SUGIHARA , Kaoru OHTSUKA
CPC分类号： F01L13/0036 , F01L1/047 , F01L1/053 , F01L2013/0052 , F01L2013/101 , F01L2013/113 , F01L2013/116 , F01L2250/02 , F01L2250/04
摘要： An internal combustion engine system is provided with a cam switching device including a cam groove provided on the outer peripheral surface or a camshaft and an actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The internal combustion engine system is configured, in causing the cam switching device to perform a cam switching operation, to control the actuator such that the engagement pin is seated on a forward outer peripheral surface which is located more forward than an end of the cam groove on the forward side with respect to an insert section of the cam groove in the rotational direction of the camshaft.
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