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公开(公告)号：US10851718B2
公开(公告)日：2020-12-01
申请号：US16493205
申请日：2018-02-20
Applicant: Mazda Motor Corporation
Inventor： Takafumi Nishio , Takahiro Yamamoto , Toshiaki Nishimoto , Masanori Hashimoto
IPC: F02D17/02 , F01L13/00 , F01M1/02 , F01M1/16 , F02D9/08 , F02D13/02 , F02D13/06 , F02D41/00 , F02P5/04 , F02P5/15
Abstract: A controller increases an actual oil pressure up to a transient oil pressure (an actuating oil pressure) and then supplies oil adjusted to have the transient oil pressure (the actuating oil pressure) to valve stopping mechanisms to actuate the valve stopping mechanisms. The controller, when actuating the valve stopping mechanisms, starts increase in an intake filling amount when the actual oil pressure increases up to a predetermined determination value set at the transient oil pressure (the actuating oil pressure) or lower.
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公开(公告)号：US10233797B2
公开(公告)日：2019-03-19
申请号：US14770416
申请日：2014-02-26
Applicant: Mazda Motor Corporation
Inventor： Masanori Hashimoto , Hisashi Okazawa
Abstract: An oil supply device for an engine is provided with an oil pump of a variable capacity type; a plurality of hydraulically operated devices connected to the pump via an oil path; a pump control unit which changes the capacity of the pump to control a discharge amount of oil; and a hydraulic pressure detecting unit which detects a hydraulic pressure of the oil path. The plurality of the hydraulically operated devices include a metal bearing, and the pump control unit sets a highest requested hydraulic pressure among requested hydraulic pressures of the hydraulically operated devices as a target hydraulic pressure for each of the operating conditions of the engine, and changes the capacity of the pump in such a manner that the hydraulic pressure detected by the hydraulic pressure detecting unit coincides with the target hydraulic pressure for controlling the discharge amount.
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公开(公告)号：US20160356188A1
公开(公告)日：2016-12-08
申请号：US15174721
申请日：2016-06-06
Applicant: Mazda Motor Corporation
Inventor： Masanori Hashimoto , Hisashi Okazawa , Hiroaki Muranaka , Kimio Ishida , Hiroshi Hosokawa , Sho Ishigaki
CPC classification number: F01M1/16 , F01M1/02 , F01M1/08 , F01M2001/0238 , F01M2001/0246 , F01M2250/62 , F16N2250/04 , F16N2250/08
Abstract: An oil supply system for an engine is provided, which includes an oil pressure controller for controlling a variable displacement oil pump to adjust a discharge pressure thereof to reach a target oil pressure corresponding to an operating state of the engine, the variable displacement oil pump capable of adjusting a discharge amount of oil, a load detector for detecting an engine load, and an oil temperature detector for detecting an oil temperature. When the engine load is low, to increase an amount of oil mist flowing inside a crank case of the engine, the oil pressure controller controls the variable displacement oil pump to increase the discharge amount as the oil temperature becomes lower, the oil mist generated by the oil flowing out of a bearing part rotatably supporting at least a crankshaft and being atomized, the engine load being considered low when below a predetermined reference load.
Abstract translation: 提供一种用于发动机的供油系统，其包括用于控制可变排量油泵以调节其排出压力以达到对应于发动机的运行状态的目标油压的油压控制器，所述可变排量油泵能够 调节油的排出量，用于检测发动机负荷的负载检测器和用于检测油温的油温检测器。 当发动机负荷低时，为了增加在发动机的曲轴箱内流动的油雾量，油压控制器控制可变排量油泵，以随着油温变低而增加排出量，由 油从轴承部分流出至少可旋转地支撑曲轴并被雾化，当低于预定参考载荷时，发动机负载被认为是低的。
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公开(公告)号：US10519874B2
公开(公告)日：2019-12-31
申请号：US15760574
申请日：2017-02-07
Applicant: MAZDA MOTOR CORPORATION
Inventor： Masanori Hashimoto
Abstract: An oil supply control device for an engine includes: a hydraulic controller which outputs a control value to an adjusting device to cause a detected hydraulic pressure detected by a hydraulic pressure sensor to coincide with a predetermined hydraulic pressure value; a determination portion which compares an output control value output from the hydraulic controller to the adjusting device when the detected hydraulic pressure coincides with the predetermined hydraulic pressure value and a control value stored in a memory, to determine whether or not a difference between the output control value and the stored control value lies within a predetermined allowable range; and a device controller which allows activation of a hydraulic actuating device when an oil temperature is not lower than a first temperature in a case where the difference lies within the allowable range, inhibits activation of the hydraulic actuating device when the oil temperature is lower than a second temperature higher than the first temperature in a case where the difference does not lie within the allowable range, and allows activation of the hydraulic actuating device when the oil temperature is not lower than the second temperature in a case where the difference does not lie within the allowable range.
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公开(公告)号：US10473007B2
公开(公告)日：2019-11-12
申请号：US15760141
申请日：2017-02-07
Applicant: MAZDA MOTOR CORPORATION
Inventor： Masanori Hashimoto
IPC: F01M1/16 , F01L1/356 , F02D17/02 , F01L25/02 , F01M1/02 , F01L1/24 , F01L1/344 , F01L13/00 , F02D41/00 , F02D13/06 , F01L1/053 , F01L1/18 , F01L1/46
Abstract: An oil supply control device includes: a memory which stores first master data constituted by predetermined control value; a hydraulic controller which outputs the control value to an adjusting device to cause a hydraulic pressure to coincide with a target hydraulic pressure; and a determination portion which determines whether or not a first difference between an output control value and the control value of the first master data lies within a predetermined allowable range, wherein the hydraulic controller starts to control the adjusting device with use of the control value of the first master data, when the first difference lies within the allowable range, and starts to control the adjusting device with use of the control value of second master data, when the first difference does not lie within the allowable range, the control value of the second master data causing the first difference to lie within the allowable range.
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Patent Agency Ranking
公开(公告)号：US10240539B2
公开(公告)日：2019-03-26
申请号：US15676240
申请日：2017-08-14
Applicant: MAZDA MOTOR CORPORATION
Inventor： Toshiaki Nishimoto , Masanori Hashimoto
IPC: F02D13/06 , F01L1/34 , F01L1/24 , F01L13/00 , F02D41/00 , F01L1/18 , F01L1/344 , F01L1/053 , F02D41/14
Abstract: A hydraulic control system for an engine having a plurality of cylinders includes: valve stop mechanisms that switch the engine from all-cylinder operation to cylinder cut-off operation; a VVT that can change the timing to open and close valves 14 during all-cylinder operation and cylinder cut-off operation; an oil pump that supplies oil to hydraulically operated devices including the valve stop mechanisms and the VVT through a hydraulic path; and a control device. The control device controls a maintaining oil pressure, which is required to maintain the operated state of the valve stop mechanisms during cylinder cut-off operation, so that the maintaining oil pressure is set to a high value in a high oil viscosity region.
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公开(公告)号：US20150053175A1
公开(公告)日：2015-02-26
申请号：US14460294
申请日：2014-08-14
Applicant: Mazda Motor Corporation
Inventor： Toshiaki Nishimoto , Hisashi Okazawa , Masanori Hashimoto , Junsou Sasaki
CPC classification number: F02D31/001 , F01L1/344 , F01L1/3442 , F01L13/0005 , F01L2001/0537 , F01L2013/001 , F01M1/02 , F02B75/18 , F02D13/0219 , F02D13/0261 , F02D13/06 , F02D29/04 , F02D29/06 , F02D41/0087 , F02D41/083 , F02D41/1401 , F02D41/1498 , F02D2041/0012 , F02D2250/24 , Y02T10/18
Abstract: A control device of a multi-cylinder engine is provided. The device includes first and second auxiliary components. The first auxiliary component generates energy. The device includes an angular speed variation detecting device for detecting an angular speed variation of a crankshaft, and an auxiliary component control device for controlling drive loads of the first and second auxiliary components. When an engine load is low and the angular speed variation exceeds a predetermined threshold, the auxiliary component control device increases a total drive load of the auxiliary components. Here, if the drive load of the first auxiliary component is increasable, the drive load of the first auxiliary component is increased, and when this increase amount is insufficient, the drive load of the second auxiliary component is increased, whereas if the drive load of the first auxiliary component is not increasable, the drive load of the second auxiliary component is increased.
Abstract translation: 提供了一种多缸发动机的控制装置。 该装置包括第一和第二辅助部件。 第一辅助部件产生能量。 该装置包括用于检测曲轴的角速度变化的角速度变化检测装置和用于控制第一和第二辅助部件的驱动负载的辅助部件控制装置。 当发动机负载低并且角速度变化超过预定阈值时，辅助部件控制装置增加辅助部件的总驱动负载。 这里，如果第一辅助部件的驱动负载可以增加，则第一辅助部件的驱动负载增加，并且当该增加量不足时，第二辅助部件的驱动负载增加，而如果第二辅助部件的驱动负载 第一辅助部件不可增加，第二辅助部件的驱动负载增加。
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公开(公告)号：US10738664B2
公开(公告)日：2020-08-11
申请号：US15391200
申请日：2016-12-27
Applicant: MAZDA MOTOR CORPORATION
Inventor： Masanori Hashimoto , Hisashi Okazawa
IPC: F01L1/344 , F01L13/00 , F01L1/24 , F01M11/10 , F01L9/02 , F01M1/02 , F01M1/16 , F02F7/00 , F01L1/18 , F01L1/053
Abstract: A controller sets a target hydraulic pressure from a required hydraulic pressure of a hydraulically operated device according to an operating condition of an engine. The controller causes an oil control valve to perform feedback control of the discharge amount of an oil pump in such a manner that an actual hydraulic pressure detected by a hydraulic pressure sensor coincides with the target hydraulic pressure. The controller executes feedback control after executing fixed duty control of setting a duty ratio of the oil control valve to a fixed duty ratio for a predetermined period of time from start of the engine.
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公开(公告)号：US09840970B2
公开(公告)日：2017-12-12
申请号：US14769304
申请日：2014-03-10
Applicant: MAZDA MOTOR CORPORATION
Inventor： Masanori Hashimoto , Hisashi Okazawa , Toshiaki Nishimoto , Akira Tsuda
CPC classification number: F02D13/0215 , F01L13/0005 , F01L2013/001 , F01L2013/0084 , F01M1/08 , F01M1/16 , F02D13/02 , F02D13/06 , F02D17/02 , Y02T10/18
Abstract: The invention relates to a control device for a multi-cylinder engine provided with an oil pump, a hydraulically operated valve characteristic control device which changes valve characteristics of at least one of an intake valve and an exhaust valve; and a hydraulically operated valve stop device which stops at least one of the intake valve and the exhaust valve when a reduced cylinder operation is performed. The control device for a multi-cylinder engine is provided with a valve control unit which operates the valve stop device after an operation of the valve characteristic control device is completed when the valve characteristic control device is operated at a time of request for the reduced cylinder operation.
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公开(公告)号：US09624843B2
公开(公告)日：2017-04-18
申请号：US14460288
申请日：2014-08-14
Applicant: Mazda Motor Corporation
Inventor： Toshiaki Nishimoto , Hisashi Okazawa , Masanori Hashimoto , Junsou Sasaki
CPC classification number: F02D13/0207 , F01L1/2405 , F01L1/3442 , F01L13/0005 , F01L2013/001 , F01L2800/00 , F01L2820/042 , F02D13/0219 , F02D13/0261 , F02D13/06 , F02D41/0002 , F02D41/0087 , F02D41/0097 , F02D41/1498 , F02D2041/0012 , F02D2200/024 , F02D2250/24 , Y02T10/18 , Y02T10/42
Abstract: A control device of a multi-cylinder engine is provided. The control device includes an auxiliary component and a valve stopping device having a locking mechanism for stopping an operation of at least one of intake and exhaust valves of a specific cylinder of the multi-cylinder engine according to an engine operating state. The control device includes an angular speed variation detecting device for detecting an angular speed variation of a crankshaft, an auxiliary component control device for controlling a drive load of the auxiliary component. In an all-cylinder operation, when an engine load is lower than a predetermined value and the detected angular speed variation exceeds a predetermined threshold, the auxiliary component control device performs an auxiliary component drive load increase control in which the drive load of the auxiliary component is increased to reduce the angular speed variation to be lower than the predetermined threshold.
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