-
21.发明授权公开(公告)号：US11499490B1
公开(公告)日：2022-11-15
申请号：US17544568
申请日：2021-12-07
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： J. Steven Kolhouse , Avra Brahma
Abstract: Systems and methods for mitigating exhaust gas emissions via cylinder deactivation are provided. A system includes a controller coupled to an internal combustion engine and an electric motive device. The controller includes a processor and a memory coupled to the processor. The memory stores instruction that, when executed by the processor, cause the controller to: command the internal combustion engine to operate in a cylinder deactivation mode whereby at least one cylinder of a plurality of cylinders of the internal combustion engine is deactivated; receive a power request exceeding a current power output from the internal combustion engine; command the electric motive device to provide a supplemental power output based on the received power request; and, subsequent to commanding the electric motive device to provide the supplemental power out, activate the at least one cylinder of the plurality of cylinders of the internal combustion engine.
-
22.发明授权公开(公告)号：US11365662B2
公开(公告)日：2022-06-21
申请号：US16829581
申请日：2020-03-25
Applicant: Cummins Inc.
Inventor： Avra Brahma
Abstract: A system includes an aftertreatment system having a catalyst, a heater, at least one sensor configured to determine an exhaust gas temperature, and a controller. The controller is structured to determine whether the exhaust gas temperature is at or below a predefined threshold temperature, provide a first command to start and control the heater in response to the exhaust gas temperature being at or below the predefined threshold temperature, modulate control of the heater as a function of the predefined threshold temperature and an actual temperature, and selectively provide a second command for a close post injection based on the exhaust gas temperature. The controller is further structured to coordinate the first and second commands using a chaining sequence, wherein the first command is provided followed by the second command only if the predefined threshold temperature is not attained by the first command.
-
公开(公告)号：US20220170405A1
公开(公告)日：2022-06-02
申请号：US17675985
申请日：2022-02-18
Applicant: Cummins Inc.
Inventor： Avra Brahma , Vivek Bithar
IPC: F01N11/00
Abstract: A method and an apparatus including a processing circuit structured to: receive a first signal indicative of an upstream air-fuel equivalence ratio from a first sensor positioned upstream of an intake of a catalyst, the first signal defining a duty cycle, receive a second signal indicative of a downstream air-fuel equivalence ratio from a second sensor positioned downstream of the intake of the catalyst, adjust the duty cycle based at least in part on the second signal, and provide a fault signal in response to the duty cycle not meeting a duty cycle range for a predetermined period of time. A notification circuit is structured to provide a notification indicating that the second sensor is faulty in response to receiving the fault signal.
-
公开(公告)号：US20220120233A1
公开(公告)日：2022-04-21
申请号：US17498003
申请日：2021-10-11
Applicant: Cummins Inc.
Inventor： Ross A. Phillips , Donald J. Benson , J. Steven Kolhouse , Avra Brahma
Abstract: 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.
-
公开(公告)号：US11255245B2
公开(公告)日：2022-02-22
申请号：US16466923
申请日：2017-12-06
Applicant: Cummins Inc.
Inventor： Avra Brahma , Vivek Bithar
IPC: F01N11/00
Abstract: An apparatus includes a processing circuit structured to receive a first signal indicative of an upstream air-fuel equivalence ratio from a first sensor positioned upstream of an intake of a catalyst, receive a second signal indicative of a downstream air-fuel equivalence ratio from a second sensor positioned downstream of the intake of the catalyst, determine an actual oxygen storage capacity of the catalyst based at least in part on the received first signal and the received second signal, compare the actual oxygen storage capacity to a maximum storage capacity, and provide a fault signal in response to the actual oxygen storage capacity exceeding the maximum storage capacity. The apparatus also includes a notification circuit structured to provide a notification indicating that the second sensor is faulty in response to receiving the fault signal.
-
Patent Agency Ranking
26.发明授权公开(公告)号：US11131259B1
公开(公告)日：2021-09-28
申请号：US17119321
申请日：2020-12-11
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： Louis J. Serrano , Xiaoping Cai , Shikui Kevin Chen , Benjamin M. Wolk , Avra Brahma , Justin R. Lee
Abstract: A system and method for transitioning a firing fraction of a variable displacement internal combustion engine when generating a desired torque output. During and following the transition to the second firing fraction, a charge of a combustion recipe is ascertained and used operating the cylinders of the variable displacement internal combustion engine to generate the desired torque output. The charge is preferably optimized for the engine operating at the second firing fraction, at least relative to the previous charge of the previous combustion recipe used with the first firing fraction.
-
公开(公告)号：US20210047975A1
公开(公告)日：2021-02-18
申请号：US17081317
申请日：2020-10-27
Applicant: Cummins Inc.
Inventor： Avra Brahma , Yongsoon Yoon
Abstract: A system for detecting and controlling air-fuel ratio imbalance conditions between cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
-
公开(公告)号：US12175813B2
公开(公告)日：2024-12-24
申请号：US18371183
申请日：2023-09-21
Applicant: Cummins Inc.
Inventor： Jeffrey Diwakar Abraham , Marcela Schmalz de Bernardi , Avra Brahma , Timothy J. Greis , Michael Haas , Gregory H. Henderson , Adam W. Kidd , Lyle E. Kocher , Krithika Mohan , Daniel J. Smith , Christophe Tricaud , Ananth Vemuri , Easwar Yarrabikki
Abstract: A system is configured to store a relationship data set of a plurality of diagnostic estimators and a plurality of failure modes, each failure mode represents a type of failure that can occur with a sensor or a vehicle component of a vehicle system, each diagnostic estimator is associated with a respective subset of the failure modes, each subset defines a control space within the vehicle system that contains at least one of (i) one or more sensors or (ii) one or more vehicle components. The system is configured to store a healthy diagnostic vector regarding nominal operational parameters of the vehicle system; acquire diagnostic information regarding current operational parameters of the vehicle system to generate an error diagnostic vector; apply the error diagnostic vector to the healthy diagnostic vector to generate a ratio diagnostic vector; and apply the ratio diagnostic vector to generate a value for each failure mode.
-
公开(公告)号：US11905904B2
公开(公告)日：2024-02-20
申请号：US17884473
申请日：2022-08-09
Applicant: Cummins Inc.
Inventor： Avra Brahma , Yongsoon Yoon
CPC classification number: F02D41/068 , F01N11/005 , F01N11/007
Abstract: Systems and apparatuses include an engine, an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system and the engine. During a warmup period for an engine, the controller determines a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system. The controller receives a target value regarding the mass flow rate of the exhaust gas. The controller controls at least one of the engine, the aftertreatment system, or at least one component associated therewith to reach or attempt to reach the target value regarding the mass flow rate of the exhaust gas.
-
30.发明授权公开(公告)号：US11898481B2
公开(公告)日：2024-02-13
申请号：US17843743
申请日：2022-06-17
Applicant: Cummins Inc.
Inventor： Avra Brahma
CPC classification number: F01N3/2013 , F01N3/105 , F01N3/2066 , F01N11/002 , F02D41/401 , F02D41/405 , F01N3/027 , F01N3/0275 , F01N3/103 , F01N3/2006 , F01N3/208 , F01N3/2026 , F01N9/005 , F01N2240/04 , F01N2240/16 , F01N2550/22 , F01N2900/04 , F01N2900/0602 , F01N2900/16 , F01N2900/1602 , F01N2900/1624 , F01N2900/1626 , F02D2200/06 , F02D2200/50
Abstract: A system includes an aftertreatment system coupled to an engine, a heater, at least one sensor configured to determine an exhaust gas temperature, and a processing circuit. The processing circuit is structured to determine whether the exhaust gas temperature is at or below a predefined threshold temperature; provide a first command to control the heater in response to the exhaust gas temperature being at or below the predefined threshold temperature; selectively provide a second command to increase the exhaust gas temperature; and coordinate the first and second commands, where the first command is provided followed by the second command only if the predefined threshold temperature is not attained by the first command.
-
-
-
-
-
-
-
-
-
Search Results
39
records
(took 0.017 seconds)
