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公开(公告)号：US20240018917A1
公开(公告)日：2024-01-18
申请号：US17632960
申请日：2021-04-15
IPC分类号： F02D41/00
CPC分类号： F02D41/0055 , F02D41/0052 , F02D2200/501 , F02D2200/703
摘要： A first output limit value is determined as an intersection point of a knock-limit output line which is set according to an exhaust gas recirculation rate and ignition timing and an exhaust-temperature-limit output line which is set according to the exhaust gas recirculation rate and ignition timing; a second output limit value is determined as an intersection point of the knock-limit output line and an air-quantity-limit output line which is set according to the exhaust gas recirculation rate, ignition timing and atmospheric pressure; and a third output limit value is determined as an intersection point of the knock-limit output line and a thermal-management-limit output line which is set according to the exhaust gas recirculation rate, ignition timing and vehicle running speed. A value of the exhaust gas recirculation rate at which the condition “P1≥P2 or P1≥P3” is satisfied is set as a target exhaust gas recirculation rate.
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公开(公告)号：US11781470B2
公开(公告)日：2023-10-10
申请号：US16139110
申请日：2018-09-24
发明人： Yoshinori Manju
CPC分类号： F02B29/0437 , F01P3/12 , F02B29/0443 , F02B29/0493 , F02D41/0055 , F02D41/042 , F02M26/17 , F02M26/28 , F02M26/33 , F01P2060/02 , F02D2200/021
摘要： Provided is a control device for an internal combustion engine that includes: a water-cooled cooler (intercooler) arranged at at least one of a portion of an intake air passage located on the upstream side of an intake port and an EGR passage; and a water pump configured to supply a cooling water with the cooler. The control device is configured: to execute a water supply operation that supplies the cooling water with the cooler by actuating the water pump when its execution condition which includes a requirement that a cooler temperature is higher than a cooling water temperature is met during stop of the internal combustion engine; and not to execute the water supply operation when the cooler temperature is lower than or equal to the cooling water temperature during stop of the internal combustion engine.
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公开(公告)号：US20230193860A1
公开(公告)日：2023-06-22
申请号：US18063423
申请日：2022-12-08
CPC分类号： F02M26/15 , F02M26/05 , F02M26/06 , F02D41/0055 , F02M2026/004
摘要： Methods and systems are provided for an exhaust system. In one example, the exhaust system includes an aftertreatment device and a recirculation passage. A recirculation valve is positioned in the recirculation passage and configured to control an amount of recirculated exhaust gas flowing through the recirculation passage to the aftertreatment device. The exhaust system further includes a diverter valve configured to control a flow of engine exhaust gases to different portions of a catalyst of the aftertreatment device.
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4.发明申请公开(公告)号：US20190249626A1
公开(公告)日：2019-08-15
申请号：US16316873
申请日：2017-06-29
申请人： YANMAR CO., LTD.
发明人： Go ASAI
CPC分类号： F02M25/14 , B60W10/06 , B60W20/16 , F02B51/02 , F02D19/0607 , F02D19/0626 , F02D19/0642 , F02D19/0671 , F02D19/10 , F02D41/0025 , F02D41/0027 , F02D41/0047 , F02D41/0055 , F02M27/02 , F02M33/00
摘要： An internal combustion engine in which a required reformed-fuel heat generation quantity (required output cylinder heat generation quantity) is calculated based on a required engine power and the thermal efficiency of an output cylinder. An estimated reformed fuel heat generation quantity is calculated based on the molar number of reformed fuel, mole fraction of each gas component in the reformed fuel, and heat generation quantity of each gas component in the reformed fuel. When a value resulting from subtracting the estimated reformed fuel heat generation quantity from the required reformed-fuel heat generation quantity is negative, a fuel reforming operation is not executed, assuming that there is a possibility that surplus reformed fuel may be generated. For example, a fuel supply from an injector to a fuel reformation chamber is stopped.
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公开(公告)号：US20190024552A1
公开(公告)日：2019-01-24
申请号：US15653237
申请日：2017-07-18
发明人： Michael James Uhrich , Joseph Norman Ulrey , Ross Dykstra Pursifull , Christopher Paul Glugla , Emil G. Serban
CPC分类号： F01N3/0234 , F01N3/101 , F01N9/002 , F01N2430/06 , F01N2430/08 , F02D15/00 , F02D37/02 , F02D41/0055 , F02D41/0225 , F02D41/0245 , F02D41/029 , F02D41/1448 , F02D41/405 , F02D2200/0802 , F02D2200/0812
摘要： Methods and systems are provided for adjusting engine compression ratio (CR) and spark timing to attain particulate filter (PF) regeneration temperature. In one example, a method may include, in response to PF load reaching a threshold and PF temperature being lower than the PF regeneration temperature, lowering the CR and then selectively adjusting spark timing based on an estimated residual gas fraction (RGF) at the lower CR.
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公开(公告)号：US20180355809A1
公开(公告)日：2018-12-13
申请号：US16106875
申请日：2018-08-21
发明人： Michael James Uhrich , Daniel Joseph Styles , Karen Evelyn Bevan , William Samuel Schwartz , Chad Allan Baker
IPC分类号： F02D41/00 , F02M35/104 , F02D41/26 , F02D41/14 , F01N13/08 , F01N13/00 , F01N3/20 , F01N1/00 , F02M26/22 , F02M26/00
CPC分类号： F02D41/0055 , F01N1/00 , F01N3/20 , F01N5/02 , F01N13/008 , F01N13/009 , F01N13/08 , F01N2240/02 , F01N2240/10 , F01N2410/00 , F02D41/0007 , F02D41/0065 , F02D41/0077 , F02D41/0082 , F02D41/0255 , F02D41/064 , F02D41/1408 , F02D41/1458 , F02D41/26 , F02D2200/0802 , F02M26/22 , F02M35/104 , F02M2026/004 , Y02T10/16 , Y02T10/26 , Y02T10/47
摘要： Methods and systems are provided for a single heat exchanger coupled to a main exhaust passage upstream of one or more exhaust catalysts or in between two exhaust catalysts for exhaust heat recovery and exhaust gas recirculation (EGR) cooling. In one example, in the pre-catalyst configuration of the heat exchanger, during exhaust heat recovery, a portion of exhaust may be routed via the heat exchanger while the remaining portion of exhaust may be routed directly to the exhaust catalysts, and fueling may be adjusted on a per-cylinder basis to maintain a target exhaust air-fuel-ratio at the exhaust catalysts.
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公开(公告)号：US20180181090A1
公开(公告)日：2018-06-28
申请号：US15304624
申请日：2015-05-12
发明人： Masanori SHIMADA , Hayato NAKADA
IPC分类号： G05B13/04 , B60W30/17 , B60W50/00 , F01N9/00 , F02D41/00 , F02D41/08 , F02D41/04 , F02D41/10 , F02D41/14
CPC分类号： G05B13/048 , B60W30/16 , B60W30/17 , B60W50/0097 , B60W2050/0014 , B60W2550/14 , B60W2550/302 , B60W2550/308 , B60W2750/308 , F01N3/021 , F01N9/002 , F01N9/005 , F01N2900/1602 , F02D21/08 , F02D23/00 , F02D41/0002 , F02D41/0007 , F02D41/005 , F02D41/0055 , F02D41/0225 , F02D41/029 , F02D41/042 , F02D41/047 , F02D41/08 , F02D41/10 , F02D41/1401 , F02D41/1402 , F02D41/1446 , F02D2041/1412 , F02D2041/143 , F02D2200/021 , F02D2200/04 , F02D2200/0414 , F02D2200/0804 , F02D2200/0812 , F02D2200/101 , F02D2200/501 , Y02T10/20 , Y02T10/42 , Y02T10/47
摘要： This control device is configured to, based on a premise that an operating condition of a plant is a specific operating condition that is defined in advance, search for a virtual current value of a controlled variable for ensuring that a specific state quantity does not conflict with a constraint in the future using a prediction model, set the virtual current value which was found by the search to a target value of the controlled variable, and determine a manipulated variable of the plant so that an actual current value of the controlled variable approaches the target value. Due to this configuration, even if the operating condition of the plant suddenly changes to the specific operating condition, the controlled variable of the plant can be adjusted in advance so that the specific state quantity in the specific operating condition does not conflict with the constraint.
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公开(公告)号：US20180142635A1
公开(公告)日：2018-05-24
申请号：US15609630
申请日：2017-05-31
发明人： Hyunwoo NOH
CPC分类号： F02D41/0055 , F01N3/023 , F01N3/0885 , F02B37/168 , F02B2037/125 , F02D21/08 , F02D41/0007 , F02D41/0077 , F02D41/027 , F02D41/028 , F02D41/029 , F02D2041/0017 , F02D2200/1002 , F02D2200/602 , F02D2250/21 , F02M26/05 , Y02T10/144 , Y02T10/47
摘要： A method and a system for preventing surge of a vehicle may include: determining whether an engine operation mode is a particulate filter regeneration mode or a catalyst desulfurization mode; determining, when the engine operation mode is the particulate filter regeneration mode or the catalyst desulfurization mode, a torque change; determining whether the torque change is smaller than a predetermined value; determining, when the torque change is smaller than the predetermined value, whether an intake pressure is higher than an exhaust pressure by at least a predetermined pressure; and opening, when the intake pressure is higher than the exhaust pressure by at least the predetermined pressure, an exhaust gas recirculation (EGR) valve and a throttle valve.
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公开(公告)号：US20180135542A1
公开(公告)日：2018-05-17
申请号：US15653712
申请日：2017-07-19
发明人： Hong Kil BAEK , Seung Woo Lee , Tae Won Lee
IPC分类号： F02D41/00
CPC分类号： F02D41/0052 , F01N3/0814 , F01N3/0842 , F01N3/2066 , F01N2240/30 , F01N2560/08 , F01N2560/14 , F01N2610/02 , F02D19/0671 , F02D41/0025 , F02D41/0055 , F02D41/0065 , F02D41/22 , F02M26/22 , F02M26/36 , F02M26/47 , F02M26/49 , Y02T10/36 , Y02T10/40
摘要： A reforming system may include an engine; an intake line connected to the engine; an exhaust line connected to the engine; a reformer provided at an exhaust gas recirculation (EGR) line diverging from the exhaust line and mixing the exhaust gas with fuel; a front end pressure sensor provided at the EGR line of the front end portion of the reformer and measuring pressure of the exhaust gas of the front end portion of the reformer; a rear end pressure sensor provided at the EGR line of the rear end portion of the reformer and measuring pressure of the exhaust gas of the rear end portion of the reformer; and a reforming controller configured for determining whether reforming continues on the basis of a pressure difference between the front end portion and the rear end portion of the reformer measured by the front end and the rear end sensors.
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公开(公告)号：US09925974B2
公开(公告)日：2018-03-27
申请号：US15139146
申请日：2016-04-26
IPC分类号： B60W20/00 , F02M25/07 , B60W20/16 , B60W20/13 , F02M26/35 , B60K6/24 , B60K6/28 , B60K6/30 , B60K6/48 , F02D21/08
CPC分类号： B60W20/16 , B60K6/24 , B60K6/28 , B60K6/30 , B60K6/365 , B60K6/445 , B60K6/48 , B60W10/06 , B60W10/08 , B60W20/13 , B60W2030/206 , B60W2510/068 , B60Y2300/474 , F02D17/02 , F02D21/08 , F02D29/02 , F02D41/0055 , F02D41/0065 , F02D41/0087 , F02D41/024 , F02D41/0255 , F02D41/042 , F02D41/064 , F02D2200/0802 , F02D2200/0804 , F02M26/35 , F02M26/43 , F02N11/0818 , Y02T10/26
摘要： Methods and systems are provided for controlling hybrid vehicle engine operation, where the vehicle engine comprises one or more cylinders dedicated to recirculating exhaust to an intake manifold. In one example, during an engine cold-start event or other event where temperature of one or more exhaust catalysts are below a temperature needed for catalytic activity, fuel injection to the dedicated exhaust gas recirculation cylinder(s) is maintained shut off, while its intake and exhaust valves are maintained activated, thus enabling the dedicated exhaust gas recirculation cylinder(s) to route air to the intake manifold of the engine, resulting in exhaust gas lean of stoichiometry that may serve to heat the catalyst. In this way, during cold start events and other events where temperature of one or more exhaust catalysts are below a temperature for catalytic activity, combustion stability issues may be avoided, and exhaust catalyst(s) rapidly heated, thereby reducing undesired tailpipe emissions.
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