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公开(公告)号：US12129775B2
公开(公告)日：2024-10-29
申请号：US18602706
申请日：2024-03-12
CPC分类号： F01M13/022 , F01M2013/0433 , F01M2013/0438
摘要： A gas-liquid separator comprises a housing comprising a first inlet structured to receive a blowby gas stream, the blowby gas stream having a first flow velocity, and a second inlet structured to a communicate a compressed gas into the housing, at least a portion of the second inlet disposed within the first inlet. An elastomeric nozzle is coupled to the first inlet and positioned around the second inlet, the elastomeric nozzle structured to combine the blowby gas stream with the compressed gas such that the compressed gas causes the blowby gas stream to flow at a second flow velocity that is greater than the first flow velocity. An impaction plate is disposed downstream of the elastomeric nozzle such that the blowby gas stream impacts the impaction plate and separates liquid and aerosol contained in the blowby gas stream.
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公开(公告)号：US20240287922A1
公开(公告)日：2024-08-29
申请号：US18565165
申请日：2022-02-21
申请人： KUBOTA CORPORATION
发明人： Yu SUZUKI , Yuki YOSHITA , Satoshi SHIBATA
CPC分类号： F01M13/0416 , F01M5/001 , F01M11/02 , F01M13/02 , F01M2013/0438
摘要： A temperature raising mechanism 800 for a blow-by gas treatment device has a head cover 4 assembled to a cylinder head, a blow-by gas treatment device 100 which is disposed in the head cover 4 and treats the blow-by gas, and heating means 600 which is fixed to an outer surface 703 of the head cover 4 and generates heat. The blow-by gas treatment device 100 has a partition wall part 200 which partitions an inside of the head cover 4 into a plurality of regions, and a separating portion 330 which separates the blow-by gas into oil and gas. The head cover 4 has a heat conducting portion 700 which is in contact with the partition wall part 200 and conducts the heat generated by the heating means 600 to the separating portion 330.
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公开(公告)号：US12055077B2
公开(公告)日：2024-08-06
申请号：US17383722
申请日：2021-07-23
发明人： Karl Gruenbeck
CPC分类号： F01M1/20 , F01M13/021 , F01M2013/0083 , F01M2250/60 , F01M2250/62
摘要： The disclosure relates to a method and a device for checking the functionality of a crankcase ventilation system of an internal combustion engine. The crankcase ventilation system includes two crankcase ventilation lines arranged between a crankcase outlet of a crankcase and an associated introduction point into an air path of the internal combustion engine, via which crankcase ventilation lines gas can be introduced from the crankcase into the air path. The method includes measuring a pressure in the crankcase, supplying the measured pressure values to a control unit, and calculating the gradient of the measured pressure. The method also includes performing a gradient check, checking whether the gradient satisfies a specified criterion, and returning to the measurement of the pressure if the gradient satisfies the specified criterion. The method also includes recording an entry in a fault memory if the gradient does not satisfy the specified criterion.
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公开(公告)号：US11971327B2
公开(公告)日：2024-04-30
申请号：US17632328
申请日：2020-06-02
CPC分类号： G01M3/025 , F01M13/028 , G01M3/26 , F01M2250/00
摘要： A blowby gas treatment device includes a pressure control valve, a fresh air induction pipe, a first blowby gas pipe, a second blowby gas pipe, a shutoff valve, a one-way valve, and a PCV valve. A leak diagnosis includes a first-stage diagnosis to determine whether or not falling of a pressure in a crank case after closing of the shutoff valve under a non-supercharging condition is normal. A second-stage diagnosis is implemented by using an air fuel ratio feedback control, and determining whether or not a sensed intake air quantity obtained by an air flow meter is equal to an actual intake air quantity flowing into a cylinder set. When the sensed intake air quantity is equal to the actual intake air quantity, presence of an in-system leak is determined, and when the actual intake air quantity is larger, presence of an out-of-system leak is determined.
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公开(公告)号：US11946397B1
公开(公告)日：2024-04-02
申请号：US18141579
申请日：2023-05-01
申请人： Caterpillar Inc.
发明人： Rodney Allen Lawrence , Brandyn A. Stack , Joshua Amiel Lehe , Nicholas Edwin Wainscott , Eric John Forthofer
CPC分类号： F01M5/005 , F01M5/021 , F01M11/0004 , F01M13/021 , F01M13/04 , F01M2013/026 , F01M2013/0438
摘要： An engine system optionally including: a crankcase of an engine having a blow-by gas passing therethrough; a liquid source containing a liquid; and an oil separating apparatus in fluid communication with the blow-by gas. The oil separating apparatus having a coalescing filter to separate oil from the blow-by gas. Separate from the blow-by gas and the coalescing filter, the oil separating apparatus is in fluid communication with the liquid source to receive the liquid. The liquid is passed through the oil separating apparatus in a heat exchange relationship with the blow-by gas to maintain a desired temperature range for the blow-by gas.
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公开(公告)号：US11725553B2
公开(公告)日：2023-08-15
申请号：US17848375
申请日：2022-06-23
发明人： Tomoyuki Kimura , Hisato Inokuchi
IPC分类号： F01M13/04 , F02B39/14 , F02M25/06 , F02M35/16 , F01M9/10 , F02B37/00 , F01M13/00 , F02M35/10 , F02B67/00 , F01M11/02 , F01M13/02 , F02B37/02 , F02F7/00 , F02F1/24
CPC分类号： F01M13/0416 , F01M9/10 , F01M11/02 , F01M13/00 , F01M13/022 , F01M13/04 , F02B37/00 , F02B37/02 , F02B39/14 , F02B67/00 , F02M25/06 , F02M35/10 , F02M35/10222 , F02M35/10288 , F02M35/16 , F01M2011/021 , F01M2013/027 , F01M2013/0488 , F02F1/242 , F02F7/006 , Y02T10/12
摘要： An engine includes: an exhaust manifold 7 close to one of left and right side surfaces of an engine; a turbocharger 60 having an exhaust-side inlet connected to the exhaust manifold 7; and a rocker-arm-chamber-integrated intake manifold 8 being disposed on an upper surface of a cylinder head 5 and integrally including a rocker arm chamber 90 and an intake manifold 6. The intake manifold 8 has a wall 101 dividing the rocker arm chamber 90 close to the one of the left and right side surfaces of the engine 1 and the intake manifold 6 close to the other of the left and right side surfaces to isolate the rocker arm chamber 90 and the intake manifold 6 from each other. The rocker arm chamber 90 has, in its upper portion, a positive crankcase ventilation device 69 protruding therefrom and being configured to return blowby gas to an intake system. The positive crankcase ventilation device 69 has, in its side surface, a blowby-gas discharge port 67 connected with a gas conduit 68 through which blowby gas is delivered to an intake-side inlet of the turbocharger 60.
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公开(公告)号：US11598233B2
公开(公告)日：2023-03-07
申请号：US17252162
申请日：2019-06-12
发明人： Johannes Maier
摘要： A connection device for connecting a ventilating line to an intake air flow guide of an internal combustion engine, wherein the connection device has a non-return valve for preventing a flow from the intake air flow guide into the ventilating line. The connection device has at least one hole which is arranged upstream of the non-return valve and connects an interior chamber of the connection device to a surrounding area of the connection device.
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公开(公告)号：US11480079B2
公开(公告)日：2022-10-25
申请号：US17445703
申请日：2021-08-23
发明人： Ramprasad Shetti , Roshan Kotian , Stephen Kocienski , Jason Lymangrover , Marc Peoples , David Wright , Balaji Hosadurgam Ravindranath
摘要： Systems and methods for engine coalescer exhaust extraction are provided. In one embodiment, a system comprises an engine including a crankcase fluidly coupled to a coalescer, a muffler adapted to receive combustion exhaust gases from the engine, and a coalescer exhaust passage fluidly coupling the coalescer to the muffler. The coalescer exhaust passage includes an inlet arranged upstream of the muffler adapted to flow a motive fluid to the coalescer exhaust passage to increase a flow speed of coalescer exhaust through the coalescer exhaust passage.
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公开(公告)号：US11415030B2
公开(公告)日：2022-08-16
申请号：US16761333
申请日：2019-01-07
发明人： Jörg Ströse , Christian Scheibe , Tobias Köhnlein
摘要： The invention enables an adequate crankcase negative pressure in an internal combustion engine, in all operating ranges to the extent possible and using a suction device for the crankcase ventilation of an internal combustion engine, which suction device is equipped with a housing, a controllable electric motor and a compressor for conveying crankcase gas, which compressor is driven by the electric motor, the compressor having connection points for a crankcase ventilation line, such that the crankcase pressure of the internal combustion engine is controllable by controlling the electric motor.
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公开(公告)号：US20220205375A1
公开(公告)日：2022-06-30
申请号：US17560258
申请日：2021-12-23
发明人： Chikao KOMAKI , Ryota ITO
摘要： A blow-by gas leak diagnostic device includes a first PCV flow path, a second PCV flow path, a fresh air inlet, a pressure measurement unit, a first valve that opens and closes the first PCV flow path, a second valve that opens and closes the second PCV flow path, a third valve that opens and closes the fresh air inlet, a valve control unit, and a leak diagnosis unit. The valve control unit controls an opening degree of the third valve when a downstream side of an intake manifold with respect to a throttle valve has a negative pressure, and the second valve is in a closed state. The leak diagnosis unit diagnoses presence or absence of a leak in the first PCV flow path on the basis of an inner pressure of the first PCV flow path measured by the pressure measurement unit.
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