-
公开(公告)号：US12129778B2
公开(公告)日：2024-10-29
申请号：US18472272
申请日：2023-09-22
CPC分类号： F01N3/0835 , B01D53/9418 , B01D53/9431 , B01D53/944 , B01D53/9477 , B01D53/9486 , B01D53/9495 , F01N3/0842 , F01N3/2013 , F01N3/2066 , F01N3/2803 , F01N3/2842 , F01N13/009 , F02D41/024 , F02D41/401 , B01D2255/1021 , B01D2255/1023 , F01N2370/02 , F02D2041/389
摘要： A system comprising (i) a vehicular compression ignition engine comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line for the engine comprising: a first emissions control device comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device comprising an electrically heatable element and a catalysed second honeycomb substrate, which comprises a rhodium-free platinum group metal comprising platinum, wherein the electrically heatable element is disposed upstream from the catalysed second honeycomb substrate and wherein both the electrically heatable element and the catalysed second honeycomb substrate are disposed downstream from the first honeycomb substrate; a third emissions control device, which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device; and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element and the catalysed second honeycomb substrate; and (iii) an engine control unit comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element; an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.
-
2.发明公开公开(公告)号：US20240318609A1
公开(公告)日：2024-09-26
申请号：US18733025
申请日：2024-06-04
CPC分类号： F02D41/3845 , F02D41/3863 , F02M55/007 , F02M63/0225
摘要： A fuel return device couples to the high pressure side of a DI fuel system. The fuel return device provides for both continuous bleeding and occasional purging of fuel from the high pressure side to prevent issues related to vapor accumulation or heat-induced pressure increase. The fuel return device may be attached to a high pressure fuel rail in place of a sensor. The sensor may be attached the fuel return device. The fuel return device may include both an orifice that throttles the fuel flow through the fuel return device and a solenoid that allows the flow rate to be increased.
-
公开(公告)号：US20240318607A1
公开(公告)日：2024-09-26
申请号：US18576408
申请日：2022-07-02
CPC分类号： F02D13/0203 , F01L1/18 , F01L9/10 , F01L13/0015 , F01P3/20 , F02D41/38 , F02P5/1504 , F02D2200/101
摘要： Internal cooling method for internal combustion engines, comprising any of the following stages: (a) vary the openings and closings of combustion chamber intake and exhaust elements in order to modify the functioning cycle performed by the engine, carrying out just intake and exhaust strokes, without compression or expansion strokes; (b) inject a cooling fluid inside the engine; (c) interrupt the fuel injection and ignition systems.
This method can be implemented in alternation together with a thermodynamic cycle in which the engine produces work.
Combustion engine in which the previously described method is applied, which comprises at least one control unit configured to act on the functioning of combustion chamber intake and exhaust elements, as well as on the injection and ignition systems, and thus implement the stages of said method.-
公开(公告)号：US12060847B2
公开(公告)日：2024-08-13
申请号：US18305672
申请日：2023-04-24
申请人： DENSO CORPORATION
发明人： Takahiro Kondo , Ryohei Sano
CPC分类号： F02D41/22 , F02D1/00 , F02D41/38 , F02D2041/224 , F02D2200/101
摘要： A booster pump increases fuel pressure in a high-pressure system of a fuel supply system. A decompression mechanism reduces the fuel pressure. In case of a discharge abnormality of the booster pump which causes rise in the fuel pressure, the fuel pressure control system performs an abnormality handling to cause the decompression mechanism to stop the rise in the fuel pressure. In case of the discharge abnormality, and on determination of a warning-required state, in which the fuel pressure in the high-pressure system possibly exceeds a threshold pressure, a control device causes a warning state, in which the fuel pressure does not exceed the threshold pressure before the rise in the fuel pressure stops, even if the discharge abnormality occurs.
-
公开(公告)号：US20240200503A1
公开(公告)日：2024-06-20
申请号：US18542887
申请日：2023-12-18
发明人： Benjamin Seville , Kyle Hilling
CPC分类号： F02D41/22 , F02D41/3836 , F02D2041/225
摘要： A method of determining fuel leak of fuel injectors of an injection system of a combustion engine, said method including determining a baseline pressure based on a predetermined integral response threshold and for each fuel injector determining a primary reference integral response by obtaining the associated primary reference integral response by obtaining the current integral response while running the engine at the baseline pressure with the respective fuel injector fluidly isolated.
-
公开(公告)号：US12006890B1
公开(公告)日：2024-06-11
申请号：US18396698
申请日：2023-12-27
发明人： Seiji Okamura
CPC分类号： F02D41/3854 , F02D41/1438 , F02D41/222 , F02D2001/009 , F02D41/3082 , F02D2250/31
摘要： Upon receiving a request to stop an internal combustion engine, processing circuitry of a fuel supply device opens a relief valve by increasing a fuel pressure in a delivery pipe to a specified pressure or greater before stopping the internal combustion engine. The processing circuitry determines whether a fuel pressure sensor is normal based on a result of comparison between a fuel pressure in the delivery pipe detected by the fuel pressure sensor and a fuel pressure determination value after the fuel pressure in the delivery pipe starts to decrease as a result of opening the relief valve.
-
公开(公告)号：US11959431B2
公开(公告)日：2024-04-16
申请号：US18104168
申请日：2023-01-31
发明人： Douglas Keith , Josef Thalhauser , Nikolaus Spyra
IPC分类号： F02D41/14 , F01N3/28 , F02B37/16 , F02B37/18 , F02B37/22 , F02D13/02 , F02D41/00 , F02D41/40 , F02P5/15 , F02D41/38
CPC分类号： F02D41/1448 , F01N3/2892 , F02B37/16 , F02B37/162 , F02B37/18 , F02B37/183 , F02B37/22 , F02D13/0234 , F02D41/0007 , F02D41/146 , F02D41/401 , F02P5/1502 , F02D2041/389
摘要： An internal combustion engine with an open-loop or closed-loop control device (2), wherein at least one combustion chamber (3) of the internal combustion engine (1) is designed to burn a fuel-air mixture using at least one combustion parameters that can be influenced by the open-loop or closed-loop control device (2), wherein the open-loop or closed-loop control device (2) has an emission control loop that is configured to actuate the at least one actuator that influences the at least one combustion parameter as a substitute parameter for NOx emissions by means of a functional relationship in such way that at last one combustion parameter can be set for each target or actual power rating of the internal combustion engine (1), wherein the functional relationship takes account of an influence of a change of the exhaust backpressure (p3′) affecting at least one combustion chamber (3).
-
公开(公告)号：US20240084774A1
公开(公告)日：2024-03-14
申请号：US18504464
申请日：2023-11-08
申请人： Arctic Cat Inc.
CPC分类号： F02P5/045 , F02B75/02 , F02D41/38 , F02P5/1502 , F02B2075/025 , F02D2200/101 , F02D2200/70
摘要： Embodiments describe a method of controlling a two-stroke internal combustion engine. A method of controlling a two-stroke internal combustion engine includes determining a base nominal exhaust gas temperature, determining a base barometric pressure correction to base nominal exhaust gas temperature, determining exhaust gas temperature differential, determining exhaust gas temperature injection correction, and utilizing the exhaust gas temperature injection correction to make a final short-term fuel or ignition correction.
-
公开(公告)号：US11927148B2
公开(公告)日：2024-03-12
申请号：US16906838
申请日：2020-06-19
CPC分类号： F02D41/402 , F02B23/08 , F02D41/3094 , F02D41/3836 , F02F1/004 , F02F3/00 , F02M61/14 , F02B2023/085 , F02D2041/3881 , F02D2041/389 , F02D2200/024 , F02D2200/1002 , F02D2200/101 , F02F1/242 , Y02T10/12
摘要： A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.
-
公开(公告)号：US11905908B2
公开(公告)日：2024-02-20
申请号：US17498003
申请日：2021-10-11
申请人： Cummins Inc.
CPC分类号： F02D41/3845 , F02D41/0087 , F02D2200/0602
摘要： A method for operating an engine fueling system to manage fuel in an accumulator supplying fuel to an engine including multiple cylinders comprising monitoring fuel load in the accumulator, determining that the engine is operating in a cylinder deactivation mode such as a skip-fire mode during which one or more fueling events to one or more of the cylinders is being skipped, and controlling a supply of fuel from a fuel pump to the accumulator during the cylinder deactivation mode operation. In embodiments, controlling the supply of fuel includes causing fuel to be supplied from the fuel pump to the accumulator if the monitored fuel load is less than or equal to a first fuel load, and causing fuel to be not supplied from the fuel pump to the accumulator if the monitored fuel load is greater than the first load value. Controlling the supply of fuel may comprise controlling the supply of fuel during each fueling event cycle of each deactivated cylinder.
-
-
-
-
-
-
-
-
-
搜索结果
2569 条记录 (耗时 0.03 秒)
