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公开(公告)号：US12044188B2
公开(公告)日：2024-07-23
申请号：US18274243
申请日：2022-01-13
发明人： Daniel Alberer , Andreas Kerschbaummayr , Andreas Leyrer , Bernhard Ramsebner , Martin Ranzmaier
摘要： A vehicle drive has an internal combustion engine, an air conduit system, an exhaust system and a diagnostic unit for identifying a leak in the air conduit system of the internal combustion engine. The diagnostic unit is designed to carry out a method for diagnosing a leak in an internal combustion engine, including by determining mass flows in the air conduit system, and identifying a leakage mass flow.
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公开(公告)号：US11988163B2
公开(公告)日：2024-05-21
申请号：US17930892
申请日：2022-09-09
申请人： PACCAR Inc
发明人： Trevor Ott , Maarten Meijer , Stephen Ciatti , Brandon Rouse
CPC分类号： F02D41/0007 , F02B37/12 , F02B39/10 , F02D41/0087 , F02D41/1454 , F02D41/18 , F02B2037/122 , F02D2200/101
摘要： Providing additional mass air flow to an engine of a vehicle to expand an operating range of cylinder deactivation (CDA) is provided. Aspects of the present disclosure describe a method and system to provide additional mass air flow to an engine using an auxiliary air source coupled to a turbocharger. When a low air-to-fuel ratio state is determined in association with operating the vehicle in CDA mode, the auxiliary air source is activated to assist the turbocharger with increase the supply of supercharged intake air to the engine. Accordingly, the operating range of CDA is expanded.
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3.发明公开公开(公告)号：US20240141845A1
公开(公告)日：2024-05-02
申请号：US18497688
申请日：2023-10-30
发明人： Kunpeng Wang , Ke Wang , Yuan Zoe , Zhou Cao
CPC分类号： F02D41/024 , F02D41/0087 , F02D41/18 , F02D2041/1412 , F02D2200/0802
摘要： Systems and methods for aftertreatment system thermal management using cylinder deactivation and/or intake-air throttling are disclosed. Systems and methods for thermal management of an aftertreatment system are provided herein. A controller coupled to an engine and an exhaust aftertreatment system is configured to: receive a first temperature value associated with the exhaust aftertreatment system and a second temperature value associated with the engine; determine, based on comparing the first temperature value to a first threshold, a thermal management mode including a first thermal management mode or a second thermal management mode; determine, responsive to determining the thermal management mode and based on comparing the second temperature value to a second threshold, an operating mode for the thermal management mode including at least one of a first operating mode or a second operating mode; and initiate the at least one of the first or the second operating mode.
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公开(公告)号：US20190242321A1
公开(公告)日：2019-08-08
申请号：US16386762
申请日：2019-04-17
申请人： DENSO CORPORATION
发明人： Takashi OOGA
CPC分类号： F02D41/18 , G01F1/6847
摘要： The present disclosure provides an air flow rate measuring including a casing and a sensor. The casing includes a main-bypass passage that defines an inlet and an outlet, a sub-bypass passage that branches off from the main-bypass passage at a branching area, and a guiding wall that changes, at a position upstream of the branching area, a flow direction of the passing air taken in from the inlet. The inlet and the guiding wall are arranged in an arranging direction along a flow direction of the intake air in the duct. The guiding wall includes an inlet side surface that faces the inlet and is not perpendicular to the arranging direction.
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公开(公告)号：US20190195112A1
公开(公告)日：2019-06-27
申请号：US16200703
申请日：2018-11-27
发明人： Akiyoshi Negishi , Shin Okada
CPC分类号： F01N11/002 , F01N3/021 , F01N3/103 , F01N3/206 , F01N11/007 , F01N13/008 , F01N2550/05 , F01N2560/025 , F01N2560/06 , F01N2610/03 , F02D41/024 , F02D41/1439 , F02D41/1446 , F02D41/1447 , F02D41/1454 , F02D41/1458 , F02D41/18 , F02D41/221 , F02D2041/1433 , F02M35/10386
摘要： An air flowmeter is arranged in an intake passage. An air-fuel ratio sensor is arranged downstream of an addition valve in an exhaust passage. An estimated air-fuel ratio is calculated based on an intake air amount detected by the air flowmeter and the sum of a fuel amount injected by a fuel injection valve and a fuel amount added by the addition valve. It is determined that there is a stuck-closed anomaly in the addition valve if the logical conjunction is true of a condition that a detected value of the air-fuel ratio sensor is greater than the estimated air-fuel ratio by a margin greater than or equal to a specified amount and a condition that a detected value of the exhaust temperature sensor in a period in which the addition valve adds fuel is smaller than a reference value in the period by a margin greater than or equal to a predetermined amount.
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公开(公告)号：US20190128209A1
公开(公告)日：2019-05-02
申请号：US16176158
申请日：2018-10-31
发明人： Masatoshi Nakajima , Yujiro Tsutsumi , Junya Iino , Kentaro Miki , Toru Nakashima , Keita Kamase
CPC分类号： F02D41/38 , F02D41/045 , F02D41/12 , F02D41/18 , F02D41/3845 , F02D2041/389 , F02D2250/31
摘要： In the present disclosure, pressurized fuel is directly injected from a fuel injection valve into a cylinder, and a fuel pressure is controlled to a target fuel pressure. A target fuel pressure during early depressurization is calculated on the basis of a target amount of intake air that is a target load of an internal-combustion engine, a target fuel pressure during a normal state is set on the basis of an actual amount of intake air that is an actual load of the internal-combustion engine, and a lower one of the target fuel pressure during early depressurization and the target fuel pressure during a normal state is set as the target fuel pressure.
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公开(公告)号：US20190085775A1
公开(公告)日：2019-03-21
申请号：US15855304
申请日：2017-12-27
发明人： Min-Kyu Won , Hyung-Soo Do , Soo-Hyeok Kang , Dae-Woo Kim
CPC分类号： F02D41/0002 , F02D13/0207 , F02D13/0215 , F02D13/0261 , F02D41/144 , F02D41/18 , F02D2041/001 , F02D2200/0406 , F02D2200/101
摘要： A method for correction of intake pulsation is provided. The method includes calculating a basic air charge amount of a cylinder or a charge amount conversion coefficient based on a measurement value of a sensor disposed in an intake system of an engine. A basic pulsation compensation coefficient for correcting an intake amount from a basic waveform of pulsation is calculated based on opening/closing of an intake valve and engine RPM. The basic pulsation compensation coefficient is then corrected when the basic waveform of the pulsation is changed.
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公开(公告)号：US20180363569A1
公开(公告)日：2018-12-20
申请号：US15779903
申请日：2016-10-10
发明人： Paul Finn , Pam Wade , Peter Bower , Neil Curry
CPC分类号： F02D19/10 , F02D35/027 , F02D41/0025 , F02D41/0027 , F02D41/18 , F02D2200/021 , F02D2200/0404 , F02D2200/0406 , F02D2400/11 , Y02T10/36
摘要： The invention relates to a multi-fuel engine comprising a primary fuel supply and at least a secondary fuel supply. The primary and at least secondary fuels are arranged to mix with each other and with air for combustion in one or more cylinders of the engine in use. One or more electronic control units (ECU) are provided to control one or more supply characteristics of the primary and/or at least secondary fuel(s) in use. The engine includes a mass air flow (MAF) sensing means. At least one of the ECUs is arranged to receive one or more signals from the MAF sensing means to control, at least partially, one or more supply characteristics of the primary fuel. In addition, the ECU and/or a further ECU is arranged to receive one or more signals from the MAF sensing means to control, at least partially, one or more supply characteristics of the at least secondary fuel.
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9.发明申请公开(公告)号：US20180313279A1
公开(公告)日：2018-11-01
申请号：US15957309
申请日：2018-04-19
发明人： Takehiro KOMATSU
IPC分类号： F02D41/00
CPC分类号： F02D41/0007 , F02D13/0261 , F02D41/18 , F02D2041/001 , F02D2041/002 , F02D2200/0406
摘要： A control device for an internal combustion engine includes an electronic control unit configured to predict a first intake air amount in a case where an overlapping period in which both of an intake valve and an exhaust valve of a cylinder of the internal combustion engine are open is set to be a first period, predict a second intake air amount in a case where the overlapping period is set to be a second period shorter than the first period with a valve timing of the exhaust valve being advanced, predict that scavenging will occur in the overlapping period in a case where the first intake air amount is greater than the second intake air amount, and predict that the scavenging will not occur in a case where the first intake air amount is equal to or smaller than the second intake air amount.
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公开(公告)号：US20180266871A1
公开(公告)日：2018-09-20
申请号：US15920833
申请日：2018-03-14
CPC分类号： G01F22/02 , F02D33/02 , F02D41/0002 , F02D41/009 , F02D41/1438 , F02D41/18 , F02D2041/1412 , F02D2041/1433 , F02D2200/0402 , F02D2200/0404 , F02D2200/0406 , F02D2200/0408 , F02D2200/602 , G01M15/05 , Y02T10/42
摘要： A method for determining an air volume in a combustion chamber of a fuel-injection internal combustion engine, especially during a load change condition, including synchronizing a throttle valve setpoint signal to an operating state criterion (tn); determining a curve dynamics of the throttle valve position taking into account the synchronized throttle valve setpoint signal; determining an actual air volume quantity at an ACTUAL time point (t0); determining a desired time point (t0+Δt); predicting a further air volume quantity for the desired time point (t0+Δt) and determining a total air volume quantity from the ACTUAL air volume quantity and the further air volume quantity for the desired time point (t0+Δt).
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