公开(公告)号：US20130066502A1

公开(公告)日：2013-03-14

申请号：US13672466

申请日：2012-11-08

Applicant: Tula Technology Inc.

Inventor： Ronald D. YUILLE ,  Mark A. SHOST ,  Louis J. SERRANO ,  Adya S. TRIPATHI

IPC: B60W20/00 ,  B60W10/08 ,  B60W10/06

CPC classification number: B60W20/00 ,  B60K6/48 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W2510/244 ,  B60W2710/0666 ,  F02D17/02 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/0087 ,  F02D41/1401 ,  F02D41/1402 ,  F02D41/266 ,  F02D2041/2027 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/1512 ,  Y02T10/42 ,  Y02T10/46 ,  Y02T10/6221

Abstract: A variety of methods and arrangements for operating an internal combustion engine and one or more motor/generators in a hybrid vehicle are described. In various embodiments, the engine is operated in a skip fire mode. Depending on the state of charge of an energy storage device and/or other factors, the engine is operated to generate more or less than a desired level of torque. The one or more motor/generators are used to add or subtract torque so that the motor/generator(s) and the engine collectively deliver the desired level of torque. In some embodiments, the engine may be run with a substantially open throttle to reduce pumping losses and improve fuel efficiency.

Abstract translation: 描述了用于操作混合动力车辆中的内燃机和一个或多个电动机/发电机的各种方法和装置。 在各种实施例中，发动机以跳火模式操作。 根据能量存储装置的充电状态和/或其他因素，发动机被操作以产生大于或小于期望的扭矩水平。 一个或多个电动机/发电机用于增加或减少转矩，使得电动机/发电机和发动机共同提供所需的扭矩水平。 在一些实施例中，发动机可以以基本上打开的节气门运行，以减少泵送损失并提高燃料效率。

公开(公告)号：US12196144B2

公开(公告)日：2025-01-14

申请号：US18497688

申请日：2023-10-30

Applicant: Cummins Inc. ,  Tula Technology, Inc.

Inventor： Kunpeng Wang ,  Ke Wang ,  Yuan Zoe ,  Zhou Cao

IPC: F02D41/02 ,  F01N3/20 ,  F02D41/00 ,  F02D41/18 ,  F02D41/14

Abstract: Systems and methods for aftertreatment system thermal management using cylinder deactivation and/or intake-air throttling are disclosed. Systems and methods for thermal management of an aftertreatment system are provided herein. A controller coupled to an engine and an exhaust aftertreatment system is configured to: receive a first temperature value associated with the exhaust aftertreatment system and a second temperature value associated with the engine; determine, based on comparing the first temperature value to a first threshold, a thermal management mode including a first thermal management mode or a second thermal management mode; determine, responsive to determining the thermal management mode and based on comparing the second temperature value to a second threshold, an operating mode for the thermal management mode including at least one of a first operating mode or a second operating mode; and initiate the at least one of the first or the second operating mode.

公开(公告)号：US20240159196A1

公开(公告)日：2024-05-16

申请号：US18373144

申请日：2023-09-26

Applicant: Cummins Inc. ,  Tula Technology, Inc.

Inventor： Aaron William Beinborn ,  J. Steven Kolhouse ,  David J. Langenderfer ,  David Schmidt

IPC: F02D41/00 ,  F02D13/02 ,  F02D41/02 ,  F02D41/22 ,  F02D41/40

CPC classification number: F02D41/0087 ,  F02D13/0207 ,  F02D41/024 ,  F02D41/22 ,  F02D41/401 ,  F02D2200/10

Abstract: A system includes a controller having at least one processing circuit including at least one memory coupled to at least one processor. The controller is configured to: receive data regarding operation of an engine indicating that one or more cylinders of a plurality of cylinders of the engine is compromised; cause the engine to operate in a modified engine operating mode whereby operation of the one or more cylinders that is compromised is modified; cause the engine to operate in a non-modified engine operating mode whereby operation of the one or more cylinders that is compromised is not modified responsive to receiving information regarding a predetermined condition despite the data regarding operation of the engine indicating that the one or more cylinders of the plurality of cylinders of the engine is compromised.

公开(公告)号：US11959432B2

公开(公告)日：2024-04-16

申请号：US18180362

申请日：2023-03-08

Applicant: Tula Technology, Inc.

Inventor： Robert C. Wang ,  Louis J. Serrano ,  Shikui Kevin Chen

IPC: F02D41/22 ,  F02D13/02 ,  F02D13/06 ,  F02D41/00

CPC classification number: F02D41/221 ,  F02D13/0242 ,  F02D13/06 ,  F02D41/0087 ,  F02D41/009 ,  F02D2200/0406

Abstract: A method of operating an engine is provided. An exhaust valve actuation fault is detected for a first exhaust valve associated with a first cylinder during a first working cycle. In response to the detection of the exhaust valve actuation fault, fueling to at least the first cylinder is cut off. Actuation of the first exhaust valve is attempted in second working cycles that follow the first working cycle, wherein the second working cycles are not fueled. Whether or not the first exhaust valve actuated properly during the second working cycles is determined. Operation of the first cylinder is resumed when it is determined that the first exhaust valve actuated properly. Operation of the first cylinder is not resumed when it is determined that the first exhaust valve did not actuate properly.

公开(公告)号：US11821379B1

公开(公告)日：2023-11-21

申请号：US17830925

申请日：2022-06-02

Applicant: Tula Technology, Inc.

Inventor： Louis J. Serrano ,  Xin Yuan ,  Shikui Kevin Chen ,  Xi Luo ,  Robert C. Wang ,  Xiaoping Cai ,  Vijay Srinivasan

IPC: F02D41/00 ,  F02D41/24

CPC classification number: F02D41/0087 ,  F02D41/0085 ,  F02D41/2403 ,  F02D2041/0012 ,  F02D2200/0802 ,  F02D2200/1002 ,  F02D2200/50

Abstract: A system and method for operating an ICE by (a) generating a running history of one or more-cylinder events per cylinder, and (b) using the running history to select a least-used non-rotating firing pattern, among a plurality of non-rotating firing patterns, provided for each firing fraction less than one (1). By making the least used selection based on the running history, unequal usage among cylinders of the ICE can be mitigated.

公开(公告)号：US11674423B2

公开(公告)日：2023-06-13

申请号：US17561468

申请日：2021-12-23

Applicant: Tula Technology, Inc.

Inventor： Matthew A. Younkins ,  Shikui Kevin Chen

IPC: F01N3/00 ,  F01N3/20 ,  F01N3/08 ,  F02D41/00 ,  F01N11/00 ,  F01N3/021 ,  F02D41/40 ,  F01N13/00

CPC classification number: F01N3/2033 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/2066 ,  F01N11/005 ,  F01N13/009 ,  F02D41/0087 ,  F02D41/401 ,  F01N2430/08 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F02D2041/0012 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02T10/12 ,  Y02T10/40

Abstract: System and methods are described for optimizing exhaust flow rate and temperature during specified operational periods warm-up and keep-warm conditions, by minimizing or maximizing heat flux during those specified operational periods.

公开(公告)号：US11624335B2

公开(公告)日：2023-04-11

申请号：US17569722

申请日：2022-01-06

Applicant: Tula Technology, Inc.

Inventor： Robert C. Wang ,  Louis J. Serrano ,  Shikui Kevin Chen

IPC: F02D41/22 ,  F02D41/00 ,  F02D13/06 ,  F02D13/02

Abstract: A method of operating an engine is provided. An exhaust valve actuation fault is detected for a first exhaust valve associated with a first cylinder during a first working cycle. In response to the detection of the exhaust valve actuation fault, fueling to at least the first cylinder is cut off. Actuation of the first exhaust valve is attempted in second working cycles that follow the first working cycle, wherein the second working cycles are not fueled. Whether or not the first exhaust valve actuated properly during the second working cycles is determined. Operation of the first cylinder is resumed when it is determined that the first exhaust valve actuated properly. Operation of the first cylinder is not resumed when it is determined that the first exhaust valve did not actuate properly.

公开(公告)号：US11619187B2

公开(公告)日：2023-04-04

申请号：US17714880

申请日：2022-04-06

Applicant: Tula Technology, Inc. ,  Cummins Inc.

Inventor： Louis J. Serrano ,  Xiaoping Cai ,  Shikui Kevin Chen ,  Benjamin M. Wolk ,  Avra Brahma ,  Justin R. Lee

IPC: F02D41/00 ,  F02D17/02 ,  F02D37/02 ,  F02D13/06

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 combustion recipe is ascertained and used operating the cylinders of the variable displacement internal combustion engine to generate the desired torque output. The recipe 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：US11560822B2

公开(公告)日：2023-01-24

申请号：US17002509

申请日：2020-08-25

Applicant: Tula Technology, Inc.

Inventor： Shahaboddin Owlia

IPC: F01N9/00 ,  F02D13/06 ,  F02D41/02 ,  F01N3/021

Abstract: Methods, systems, and devices for particulate filter soot management for internal combustion engines are described herein. A method for particulate filter soot management for internal combustion engines includes determining a quantity of soot on a particulate filter and adjusting a skip fire firing sequence based at least in part on maintaining the quantity of soot on the particulate filter within a desired soot quantity range.

公开(公告)号：US20220349357A1

公开(公告)日：2022-11-03

申请号：US17867797

申请日：2022-07-19

Applicant: Tula Technology, Inc.

Inventor： Louis Joseph Serrano ,  Vijay Srinivasan

IPC: F02D41/00 ,  F02D17/02

Abstract: Methods, systems, and devices for operating an engine controller in a vehicle for managing motor torque smoothing. One controller is configured to select a periodic disruptive waveform generated over a period of time to approximate that is associated with the vehicle being at idle, determine a first harmonic sinusoid from a group of harmonic sinusoids that reduces the error between an approximated waveform and the disruptive waveform, and initiate a supplemental quantity of torque during the period of time based on the disruption quantity of torque.