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公开(公告)号：US20220349366A1
公开(公告)日：2022-11-03
申请号：US17867145
申请日：2022-07-18
IPC分类号： F02M26/35 , F02M26/04 , F02M26/14 , F02M26/17 , F02M26/45 , F02M26/65 , F01N3/021 , F01N3/10 , F01N3/20 , F02D41/00 , F02M35/10
摘要： Systems and methods for treated exhaust gas recirculation (EGR) for an internal combustion engine are disclosed. The internal combustion engine has an exhaust manifold discharging exhaust gas and an intake manifold receiving forced air from a compressor. One or more exhaust treatment devices treat the exhaust gas and produce a treated exhaust gas. The EGR system includes an EGR line downstream of the one or more exhaust treatment devices and connected to the engine intake line downstream of the compressor, wherein the treated EGR line recirculates the treated exhaust gas to the intake manifold of the engine without passing through the compressor.
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公开(公告)号：US11448168B2
公开(公告)日：2022-09-20
申请号：US17287945
申请日：2018-12-28
发明人： Qiang Zhan , Guoliang Chu
IPC分类号： F02M26/02 , F02M26/14 , F01N13/10 , F02M31/20 , F02M35/10 , F02M26/17 , F02M26/22 , F02M26/35
摘要： An exhaust gas recirculation system includes a first turbocharger and a second turbocharger connected in series. An outlet of a turbine of the second turbocharger is connected to an exhaust pipe. An inlet of a compressor of the second turbocharger is connected to the exhaust pipe by means of an EGR gas collection pipe, and an outlet of the compressor of the second turbocharger is connected to an intake manifold by means of a low-pressure EGR exhaust pipe. The system employs energy of exhaust gas to drive turbines of a two-stage turbocharging system, thereby increasing utilization of the exhaust gas and improving the economic efficiency of an engine. An engine is also disclosed.
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公开(公告)号：US11434852B2
公开(公告)日：2022-09-06
申请号：US17217611
申请日：2021-03-30
发明人： Jongcheon Kim
摘要： A recirculation pipe and an engine system including the same are provided. A recirculation pipe of an EGR apparatus may include a pipe body, and a plurality of bellows tube assemblies formed in the pipe body and including a plurality of bellows tube. One bellows tube assembly among the plurality of bellows tube assemblies and another bellows tube assembly among the plurality of bellows tube assemblies have different shapes.
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公开(公告)号：US20220145834A1
公开(公告)日：2022-05-12
申请号：US17431092
申请日：2020-04-08
申请人： AIRKOM RESEARCH, LLC
IPC分类号： F02M26/35 , F02M26/14 , F02M26/17 , F02M26/04 , F02M35/10 , F02M26/65 , F02M26/45 , F02D41/00 , F01N3/20 , F01N3/10 , F01N3/021
摘要： Systems and methods for treated exhaust gas recirculation (EGR) for an internal combustion engine are disclosed. The internal combustion engine has an exhaust manifold discharging exhaust gas and an intake manifold receiving forced air from a compressor. One or more exhaust treatment devices treat the exhaust gas and produce a treated exhaust gas. The EGR system includes an EGR line downstream of the one or more exhaust treatment devices and connected to the engine intake line downstream of the compressor, wherein the treated EGR line recirculates the treated exhaust gas to the intake manifold of the engine without passing through the compressor.
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公开(公告)号：US11255258B2
公开(公告)日：2022-02-22
申请号：US17277076
申请日：2019-09-25
申请人： Fuelsave GmbH
发明人： Dirk Hoffmann
摘要： An internal combustion engine has a plurality of engine units, each having a working space, in which two rotary pistons are arranged so as mesh with each other and thereby divide the working space into an inflow region and an outflow region. Each engine unit has a closable inlet opening to the inflow region and a closable exhaust gas outlet opening. The internal combustion engine further includes a feed-line pipe to the inlet openings and an exhaust gas collection pipe connected to the exhaust gas outlet openings, so that the engine units are connected in parallel with each other. The internal combustion engine further includes exhaust gas lines which connect the engine units with each other in series. In certain cases, a control device operates some of the engine units either as internal combustion engines, or as expansion engines.
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公开(公告)号：US20210317795A1
公开(公告)日：2021-10-14
申请号：US17256894
申请日：2019-06-07
发明人： Takehide NAKAMURA
摘要： A throttle device is provided at the intake passage downstream of a compressor, a purge passage is connected to the intake passage upstream from the compressor, a purge valve is provided in the purge passage, an inlet valve is provided upstream of a connection position between the purge passage and the intake passage, and an air flow meter is provided in the intake passage upstream of the inlet valve. An electronic control device: calculates a target purge flow rate (TPFR) for vapor to the intake passage while the throttle device is controlled to a prescribed opening degree and the inlet valve is controlled to a target intake opening degree (TIOP); calculates the target purge opening degree to ensure the TPFR; controls the purge valve to the TIOP and corrects the TIOP by the TPFR; and controls the inlet valve by the corrected TIOP.
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公开(公告)号：US11143124B2
公开(公告)日：2021-10-12
申请号：US16795911
申请日：2020-02-20
发明人： Rani Kiwan , Imtiaz Ali , Gopichandra Surnilla
摘要： Methods and systems are provided for calibrating an effective area associated with an exhaust gas recirculation valve and/or a variable orifice associated with the exhaust gas recirculation valve. In one example, a method may include attaining a first steady-state intake pressure with the exhaust gas recirculation valve closed, determining a second steady-state intake pressure and a differential pressure across the variable orifice with the exhaust gas recirculation valve open, and estimating the variable orifice effective area based on the second steady-state intake pressure and the differential pressure. In this way, a calibration table may be updated for an exhaust gas recirculation control apparatus that includes an exhaust gas recirculation valve and a variable orifice, such that an actual amount of recirculated exhaust gas reflects a commanded amount.
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公开(公告)号：US10947932B2
公开(公告)日：2021-03-16
申请号：US16450818
申请日：2019-06-24
摘要： Methods and systems are provided for adjusting operation of a split exhaust engine system based on a total flow of gases through a scavenge exhaust gas recirculation system of the split exhaust engine system. In one example, a method may include setting a cam timing correction based on a difference between a first value and a second value of a flow through an exhaust gas recirculation (EGR) passage, the first value determined based on a first parameter set including a cylinder valve overlap area and the second value determined based on a second parameter set not including the cylinder valve overlap area, and operating at least one of an intake cam and an exhaust cam at a corrected timing using the cam timing correction. In this way, the flow through the EGR passage may be adjusted even without active control of a valve coupled in the EGR passage.
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公开(公告)号：US20200182203A1
公开(公告)日：2020-06-11
申请号：US16437795
申请日：2019-06-11
发明人： Seungwoo Hong , Dong Ho Chu , Dong Hee Han , Sangwook Kweon , Gil Hyun Ahn , Kwanhee Lee , Heechang Oh , Yeongseop Park , Jaegu Kang , Sung Bong Park , Dongjin Kang
摘要： An intake manifold according to an exemplary embodiment of the present invention may include a first intake manifold having a second intake pipe, a third intake pipe, and a first surge tank which temporarily stores intake air flowing through an intake line and distributes the intake air to the second intake pipe and the third intake pipe. A second intake manifold has a first intake pipe, a fourth intake pipe, and a second surge tank which temporarily stores intake air flowing through the intake line and distributes the intake air to the first intake pipe and the fourth intake pipe.
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公开(公告)号：US10557421B2
公开(公告)日：2020-02-11
申请号：US16168440
申请日：2018-10-23
IPC分类号： F02M26/14 , F02D13/02 , F02D41/00 , F02D41/02 , F02D41/12 , F02B25/14 , F02M26/20 , F02M26/53 , F01N13/10 , F02B37/00 , F02D41/26
摘要： Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a flow of exhaust (e.g., exhaust gas recirculation) from engine cylinders to the intake passage, upstream of a compressor, via an exhaust gas recirculation (EGR) passage and the first exhaust manifold may be adjusted by adjusting a timing of a first set of cylinder exhaust valves coupled to the first exhaust manifold. Additionally, the first set of cylinder exhaust valves open at a different time than a second set of cylinder exhaust valves coupled to the exhaust passage.
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