Patents Assigned to Cummins Inc.
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Patent number: 12366186Abstract: A lubricant manifold includes a lubricant filter head, a pump inlet channel, an inlet transfer channel, and a lubricant cooler. The lubricant filter head is configured to be coupled to a lubricant filter. The pump inlet channel is fluidly coupled to the lubricant filter head and integrally formed with the lubricant filter head. The pump inlet channel is configured to receive a lubricant and provide the lubricant to the lubricant filter head. The inlet transfer channel is fluidly coupled to the lubricant filter head and integrally formed with the lubricant filter head and the pump inlet channel. The inlet transfer channel is configured to receive the lubricant from the pump inlet channel. The lubricant cooler is fluidly coupled to the inlet transfer channel and integrally formed with the lubricant filter head, the pump inlet channel, and the inlet transfer channel.Type: GrantFiled: November 4, 2022Date of Patent: July 22, 2025Assignee: Cummins Inc.Inventors: Shweta Nitin Patil, Chuan Wang
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Systems and methods for operating passive nitrogen oxide adsorbers in exhaust aftertreatment systems
Patent number: 12366191Abstract: A system includes a passive NOx adsorber (PNA) for receiving and treating exhaust gas generated by an engine and a controller. The controller is configured to: while exhaust gas is received by the PNA, detect a torque demand that is greater than a threshold value; responsive to detecting that the torque demand is greater than the threshold value, engage a motor, coupled with a battery system, with a drive shaft of the system to meet at least a portion of the torque demand; and in response to the engagement of the motor with the drive shaft not meeting all of the torque demand, engage the engine with the drive shaft to meet a remainder of the torque demand.Type: GrantFiled: August 13, 2024Date of Patent: July 22, 2025Assignee: Cummins Inc.Inventors: Jinyong Luo, Xiaobo Song, Xing Jin, David Schmidt, Lu Qiu, Lisa A Orth-Farrell, Ying Yuan, Manik Narula, Lars K. Henrichsen -
Patent number: 12359690Abstract: A system for lubricating a crankshaft of an engine includes a first main journal including a first shaft and in fluid communication with an oil supply. The system also includes a first main journal oil passage in fluid communication with the oil supply extending through the first shaft. The system also includes a first pin journal including a first crank, and a first oil passage extending partially through the first crank in fluid communication with the first main journal oil passage. The system also includes a second pin journal including a second crank, and a second oil passage extending partially through the second crank in fluid communication with the first main journal oil passage. Each of the first oil passage extends at a first non-zero angle and the second oil passage extends at a second non-zero angle relative to the first main journal oil passage.Type: GrantFiled: September 15, 2023Date of Patent: July 15, 2025Assignee: Cummins Inc.Inventors: Qing Zhang, Leaf Li, Xin Jia
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Patent number: 12362688Abstract: A system and method for controlling a six-phase machine include generating a plurality of control vectors for the six-phase machine. The six-phase machine is configured as a combination of a first three-phase machine and a second three-phase machine. Each of the plurality of control vectors is generated by combining two phase vectors from the six-phase machine, where one phase vector is selected from the first three-phase machine and another phase vector is selected from the second three-phase machine. The system and method also include implementing a control method based on the plurality of control vectors to control the operation of the six-phase machine.Type: GrantFiled: October 15, 2021Date of Patent: July 15, 2025Assignee: Cummins Inc.Inventors: Akm Arafat, Dakshina Murthy-Bellur, Santhosh Krishnamoorthi, Shankari Bangalore Kalyanam Ramnath
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Patent number: 12355366Abstract: Inverter apparatuses and systems with a DC energy source are disclosed, in which a planar and radially symmetrical positive DC busbar is coupled with a positive terminal of the DC energy source and a planar and radially symmetrical negative DC busbar is coupled with a negative terminal of the DC energy source. The inverter has a plurality of switches such that the plurality of switches are positioned radially symmetrically with respect to a center of the DC busbars. Each switch is coupled with either the positive DC busbar or the negative DC busbar on a first end and one of a plurality of AC busbars on a second end. A single toroidal filtering core is located at the center of the DC busbars and is coupled with the plurality of AC busbars.Type: GrantFiled: November 10, 2021Date of Patent: July 8, 2025Assignee: Cummins Inc.Inventors: Sanchit Mishra, Akm Arafat, Michael Hays, Dakshina Subbarao Murthy-Bellur, Minyu Cai
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Patent number: 12344259Abstract: A method includes receiving an indication regarding a deceleration event for a vehicle, remapping a response of a prime mover of the vehicle from following a first response curve to following a deceleration response curve in response to (i) the deceleration event and (ii) a speed of the vehicle being greater than a speed threshold, and activating an output of the prime mover to accelerate the vehicle at a relatively lesser amount of depression of an accelerator from a non-depressed state of the accelerator than prior to the deceleration event in response to the accelerator being engaged by an operator following the deceleration event.Type: GrantFiled: January 30, 2024Date of Patent: July 1, 2025Assignee: Cummins Inc.Inventors: Martin T. Books, Vivek Anand Sujan
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Patent number: 12344228Abstract: A system and method for power management of hybrid electric vehicles is provided. In some implementations, a plug-in series hybrid electric vehicle may include an engine, a motor/generator (MG), a traction motor, an energy storage device, and a controller. The controller is coupled to the engine and the MG to control operation of the engine and the MG such that a state-of-charge (SOC) of the energy storage device tracks a dynamic reference SOC profile during a trip and an average engine power (AEP) is maintained above a threshold. In some instances, maintaining AEP above a threshold supports emission control of the vehicle.Type: GrantFiled: September 20, 2023Date of Patent: July 1, 2025Assignee: Cummins Inc.Inventors: Dat Duc Le, Carlos A. Lana, Kenneth M. Follen
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Patent number: 12344217Abstract: Methods and systems for operating a vehicle on a reduced traction surface are disclosed. A controller of the vehicle obtains at least one of: ambient information or GPS information, determines a derate increment size based on the ambient or GPS information, imposes a sustained derate by applying a torque limit on a braking torque of the vehicle based on the derate increment size in response to detecting a traction control event. The controller also determines a verification period and a derate reduction period based on the ambient or GPS information to reduce the sustained derate in response to detecting a lack of traction control event during the verification period at a rate determined by the derate reduction period.Type: GrantFiled: June 27, 2023Date of Patent: July 1, 2025Assignee: Cummins Inc.Inventors: Jaime Antonio Lugo-Castillo, Martin T. Books, Richard A. Booth
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Patent number: 12344230Abstract: Systems and methods for controlling a hybrid system. For example, a computer-implemented method includes determining a system temperature zone of the aftertreatment system as being in: a first temperature zone below a first temperature threshold, a second temperature zone from the first temperature threshold to a second temperature threshold, or a third temperature zone above the second temperature threshold; determining a power demand corresponding to the operation of the hybrid system as being in: a first power demand zone if the power demand is below a power threshold, or a second power demand zone if the power demand is equal to or greater than the power threshold; and determining a control strategy based at least in part on the determined system temperature zone and the determined power demand.Type: GrantFiled: July 20, 2021Date of Patent: July 1, 2025Assignee: Cummins Inc.Inventors: Xing Jin, David Schmidt, Lu Qiu, Lisa A. Orth-Farrell, Ying Yuan, Jinyong Luo, Manik Narula
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Patent number: 12338757Abstract: A method for increasing a temperature of an exhaust gas to a target temperature is provided. The method includes determining, by a controller, a target energy of the exhaust gas and determining, by the controller, a target emissions based the target energy. The method further includes determining, by the controller, a tradeoff in a performance of an engine corresponding to one or more of the target emissions, an engine speed, and a driver demand power and determining, by the controller, an allowable heater power based on the tradeoff. The method further includes operating, by the controller, a heater with a heater power command not exceeding the allowable heater power to heat the exhaust gas to the target temperature.Type: GrantFiled: December 17, 2021Date of Patent: June 24, 2025Assignee: Cummins Inc.Inventors: Dheeraj Bharadwaj Gosala, Avra Brahma
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Patent number: 12337815Abstract: A system is provided for performing an automated electrification operation for an electric vehicle (102) using a processor (122). An electrification controller (126) communicates with a model generation unit (128). The model generation unit (128) generates a model representative of a power consumption trend of the electric vehicle (102). The electrification controller (126) sets a target power margin for the electric vehicle (102) based on the model such that the target power margin is close to a minimum state-of-charge (SOC) threshold of an energy storage supply (124) of the electric vehicle (102). The target power margin represents a difference between the minimum SOC threshold and an ending power level of the energy storage supply (124) after completion of a mission associated with the electric vehicle (102). The processor (122) performs the automated electrification operation for the electric vehicle (102) based on the target power margin.Type: GrantFiled: November 9, 2018Date of Patent: June 24, 2025Assignee: Cummins Inc.Inventors: Martin T. Books, Jennifer K. Light-Holets
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Patent number: 12326128Abstract: A fuel injector including a flow balanced injector needle seal is provided. The fuel injector includes a needle in a fuel passage of the fuel injector body. The needle moves longitudinally in the fuel passage to selectively stop and start fuel injection from the fuel passage. The fuel injector includes a check valve assembly that maintains pressurized fuel in the fuel passage and permits fuel flow out of the fuel passage in response to a fuel injection event. The needle seal is provided between the check valve assembly and a sleeve that extends around the proximal end of the needle. The needle seal includes multiple inlet orifices for receiving a fuel flow into the needle seal that are positioned relative to one another so that net lateral forces on the needle are effectively offset from one another.Type: GrantFiled: December 20, 2022Date of Patent: June 10, 2025Assignee: Cummins Inc.Inventors: Romaine O. Edwards, Jason R. Garcia, Steve W. Gillespie
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Publication number: 20250179966Abstract: A system includes an aftertreatment system coupled to an engine and a controller communicably coupled to the engine and the aftertreatment system, the controller is configured to perform operations. The operations include receiving an engine braking request, and, responsive to receiving the engine braking request, enabling an engine braking operation whereby at least one engine braking mode of a plurality of engine braking modes is enabled and implemented. The operations include receiving a temperature value regarding a temperature of the aftertreatment system, comparing the temperature value to a first threshold or a second threshold, and selecting and implementing one of the one or more engine braking modes based on comparing the temperature value to the first threshold or the second threshold.Type: ApplicationFiled: November 27, 2024Publication date: June 5, 2025Applicant: Cummins Inc.Inventors: J. Steven Kolhouse, Jonathan A. Dickson, Lyle E. Kocher, Jennifer Kay Light-Holets, Michael J. Ruth
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Publication number: 20250172102Abstract: Systems and methods for improving torque converter matching can include a controller monitoring a state of a torque converter of a vehicle and controlling the engine torque based on the state of the torque converter. The controller can dynamically control the engine torque, when the torque converter is determined to be in an open state, to maintain substantially constant engine power or to regulate the engine torque as a function of the speed ratio of the torque converter, such as over a full spectrum of the speed ratio. The controller can cause the engine to operate according to different engine torque curves or patterns at different states of the torque converter.Type: ApplicationFiled: November 26, 2024Publication date: May 29, 2025Applicant: Cummins Inc.Inventor: Steven M. Bellinger
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Publication number: 20250172083Abstract: A system, method, and apparatus for predicting and controlling tailpipe NOx conversion and ammonia slip based on degradation of an aftertreatment system. The aftertreatment system is coupled to a controller. The controller can be configured to retrieve, from a memory, a model of a catalyst of the aftertreatment system. The model can be generated based on at least historical data from at least one sensor upstream of the catalyst and at least one sensor downstream of the catalyst. The controller predicts, using the model, a first value to be sensed by the sensor upstream of the catalyst and a second value to be sensed by the sensor downstream of the catalyst. The controller controls reductant dosing from a doser based on the predicted second value.Type: ApplicationFiled: January 20, 2023Publication date: May 29, 2025Applicant: Cummins Inc.Inventors: Rohil Daya, Anand Srinivasan, Karthik Venkata Rama Krishna Dadi, Saurabh Yashwant Joshi, Michael J. Cunningham
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Patent number: 12316211Abstract: An inverter system is provided such that the system includes a direct-current (DC) voltage supply electrically coupled with a DC link, a plurality of inverters, each electrically coupled with the DC link, a plurality of electric machines where each electric machine is electrically coupled with one of the inverters, and a controller coupled with each of the inverters. The controller can control carrier signals of the inverters such that the carrier signals are synchronized and interleaved at an angle (?) that is determined based on the waveform type of the carrier signals and the number of inverters in the system.Type: GrantFiled: July 8, 2021Date of Patent: May 27, 2025Assignee: Cummins Inc.Inventors: Minyu Cai, Akm Arafat, Bradford K. Palmer, Dakshina S. Murthy-Bellur
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Patent number: 12297787Abstract: An apparatus includes a control circuit. The control circuit is structured to interpret condition data indicative of an external operating condition of a vehicle, determine an operating parameter of the vehicle based on an actuator response of an actuator of the vehicle, compare the operating parameter to an operating parameter threshold where the operating parameter threshold is based on the external operating condition, and remap an actuator response map of the actuator based on the comparison indicating that the operating parameter does not satisfy the operating parameter threshold. The operating parameter includes at least one of a fuel economy value, an emissions value, an acceleration value, a braking value, or a wear value.Type: GrantFiled: December 13, 2021Date of Patent: May 13, 2025Assignee: Cummins Inc.Inventors: J. Steven Kolhouse, Carlos Alcides Lana, Vivek A. Sujan, Phani Vajapeyazula, J. Stephen Wills, Thomas M. Yonushonis
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Patent number: 12291111Abstract: A control system for controlling a powertrain of an electric vehicle is disclosed. The powertrain comprises a traction motor and a battery for powering the traction motor. The control system is configured to detect a low state of charge of the battery and to operate the powertrain in a low state of charge mode when the low state of charge is detected. In the low state of charge mode, the control system adjusts at least one parameter of the powertrain, such as traction motor torque, powertrain cooling, accessory cooling and accessory power consumption, to reduce power drawn from the battery.Type: GrantFiled: February 15, 2023Date of Patent: May 6, 2025Assignee: Cummins Inc.Inventor: Omkar A. Harshe
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Patent number: 12292010Abstract: A vehicle system and method of controlling a vehicle engine are provided. The method includes determining a speed of an engine in the vehicle system including a hydraulic system and a vehicle propulsion system operatively coupled to the engine. The method includes determining that the engine speed is decreasing and an actual engine speed is less than a target engine speed, and determining a current gear setting and one or more operating parameters of the hydraulic system in response to determining that the engine speed is decreasing and the actual engine speed is less than the target engine speed. The method, in response to the current gear setting being engaged and the one or more operating parameters being greater than a predetermined threshold value, includes controlling the engine speed to be higher than the target engine speed.Type: GrantFiled: November 16, 2023Date of Patent: May 6, 2025Assignee: Cummins Inc.Inventors: Rohit Saha, David A. Vittorio
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Patent number: 12292018Abstract: A gaseous fuel-air mixer includes an outer shell, an inner shell, and a fuel chamber rib. The outer shell includes an air intake and a fuel intake. The air intake is configured to receive air. The air intake has an air outlet. The fuel intake has a fuel inlet that is configured to receive fuel. The inner shell includes an inner shell intake that is configured to separately receive the air from the air outlet and the fuel from the fuel intake and to provide a gaseous fuel-air mixture. The inner shell cooperates with the outer shell to define a fuel intake collecting chamber that is configured to receive the fuel from the fuel inlet and a fuel intake concentrating chamber that is configured to receive the fuel from the fuel intake collecting chamber and provide the fuel to the inner shell intake.Type: GrantFiled: March 15, 2024Date of Patent: May 6, 2025Assignee: Cummins Inc.Inventors: George Martin Tolhurst, Joshua Bradley Bettis, Alan C. Anderson, Jeremy Aaron Lackey