公开(公告)号：US09068907B1

公开(公告)日：2015-06-30

申请号：US14270857

申请日：2014-05-06

Applicant: GM Global Technology Operations LLC

Inventor： Jun-Mo Kang ,  Yongjie Zhu ,  Yiran Hu ,  Chen-Fang Chang ,  Hanho Yun

IPC: F01N3/00 ,  G01M15/08 ,  F02D41/00 ,  F01N13/02 ,  F01N13/10 ,  F02M25/07 ,  F02D13/02

CPC classification number: F01N13/107 ,  F01N3/00 ,  F01N13/02 ,  F02D13/0207 ,  F02D13/0261 ,  F02D13/0265 ,  F02D41/00 ,  F02D41/0007 ,  F02D41/005 ,  F02D41/0062 ,  F02D2041/001 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/47

Abstract: A method can be used to determine the total residual gas volume in a cylinder when the piston of an internal combustion engine is at the bottom dead center (BDC) position. The method includes: (a) measuring an intake manifold pressure and an exhaust manifold pressure; (b) determining a residual gas volume in the at least one cylinder originating from a current engine cycle; (c) determining a residual gas volume in the at least one intake port originating from at least one previous engine cycle; and (d) determining a total residual gas volume when the piston is at a BDC position based, at least in part, on the residual gas volume in the at least one cylinder originating from the current engine cycle and the residual gas volume in the at least one cylinder originating from at least one previous engine cycle.

Abstract translation: 当内燃机的活塞处于下死点（BDC）位置时，可以使用一种方法来确定气缸中的总残余气体体积。 该方法包括：（a）测量进气歧管压力和排气歧管压力; （b）确定来自当前发动机循环的至少一个气缸中的残余气体体积; （c）确定源于至少一个先前发动机循环的至少一个进气口中的残余气体体积; 以及（d）至少部分地基于来自当前发动机循环的至少一个气缸中的残余气体体积和在所述发动机循环中的剩余气体体积来确定活塞处于BDC位置时的总剩余气体体积 至少一个气缸起始于至少一个先前的发动机循环。

公开(公告)号：US12243988B2

公开(公告)日：2025-03-04

申请号：US18350488

申请日：2023-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Insu Chang ,  Chen-fang Chang ,  Jun-mo Kang ,  Hanho Yun ,  Chunhao J. Lee ,  Yongjie Zhu ,  Nicholas W. Pinto

IPC: H01M10/42 ,  B60L50/64 ,  H01M10/052 ,  H01M10/48 ,  H01M50/204 ,  H01M50/249

Abstract: A vehicle includes a propulsion system having multiple electric motors. A battery system is connected to the electric motors via a direct current to direct current (DC-DC) converter and an inverter. The battery system includes a battery assembly having a plurality of battery modules. Each of the battery modules has multiple individual battery cells arranged in battery packs, a set of sensors configured to monitor a set of parameters of each battery pack, and a plurality of battery pack mounts. Each battery pack mount includes a base plate and a top plate and an actuator configured to alter a distance between plates. A monitoring unit is configured to monitor a value representative of a battery pack pressure, determine whether the value falls within a pressure threshold window, and maintain the value within the pressure threshold window by actively altering the battery pack pressure.

公开(公告)号：US20250023120A1

公开(公告)日：2025-01-16

申请号：US18350488

申请日：2023-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Insu Chang ,  Chen-fang Chang ,  Jun-mo Kang ,  Hanho Yun ,  Chunhao J. Lee ,  Yongjie Zhu ,  Nicholas W. Pinto

IPC: H01M10/42 ,  B60L50/64 ,  H01M10/052 ,  H01M10/48 ,  H01M50/204 ,  H01M50/249

Abstract: A vehicle includes a propulsion system having multiple electric motors. A battery system is connected to the electric motors via a direct current to direct current (DC-DC) converter and an inverter. The battery system includes a battery assembly having a plurality of battery modules. Each of the battery modules has multiple individual battery cells arranged in battery packs, a set of sensors configured to monitor a set of parameters of each battery pack, and a plurality of battery pack mounts. Each battery pack mount includes a base plate and a top plate and an actuator configured to alter a distance between plates. A monitoring unit is configured to monitor a value representative of a battery pack pressure, determine whether the value falls within a pressure threshold window, and maintain the value within the pressure threshold window by actively altering the battery pack pressure.

公开(公告)号：US20240424945A1

公开(公告)日：2024-12-26

申请号：US18341176

申请日：2023-06-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Insu Chang ,  Hanho Yun ,  Jun-mo Kang ,  Chen-fang Chang

IPC: B60L58/12 ,  G01R31/396 ,  H01M10/44 ,  H01M10/48

Abstract: Aspects of the disclosure include the detection of battery cell degradation. An exemplary battery management system can include a memory, computer readable instructions, and one or more processors that perform operations that include: responsive to determining that a charging state has completed, measuring a first cell voltage of a cell of the battery pack; responsive to the first cell voltage exceeding a reference voltage, measuring a second cell voltage of the cell of the battery pack; responsive to the second cell voltage being equal to the reference voltage, measuring a cell pressure of the cell of the battery pack at the reference voltage; determining a difference between the cell pressure and a prior cell pressure at the reference voltage; and responsive to the difference between the cell pressure and the prior cell pressure exceeding a threshold, identifying the cell of the battery pack as a degraded cell.

公开(公告)号：US11698034B2

公开(公告)日：2023-07-11

申请号：US17229418

申请日：2021-04-13

Applicant: GM Global Technology Operations LLC

Inventor： Hanho Yun ,  Jun-mo Kang

IPC: F02D13/02 ,  F02D41/02 ,  F02D41/14 ,  F02D41/30

CPC classification number: F02D13/0261 ,  F02D13/0265 ,  F02D41/0235 ,  F02D41/1475 ,  F02D41/3017 ,  F02D41/3035 ,  F02D2041/1468 ,  F02D2200/08 ,  F02D2200/1002

Abstract: A method of transient control for enrichment operation in a low-temperature combustion engine. The method includes determining if a current mode of the low-temperature combustion (LTC) engine is a positive valve overlap (PVO) mode. Determining if a previous mode of the LTC engine was also the PVO mode when the current mode is the PVO mode, wherein the previous mode is immediately prior to the current mode. Determining if the previous mode of the LTC engine was a negative valve overlap (NVO) mode when the previous mode was not the PVO mode. Initiating a predetermined enrichment PVO mode for the LTC engine based on the previous mode of the LTC engine. The predetermined enrichment PVO mode includes initiating a deep enrichment PVO mode, when the previous mode of the LTC engine was the NVO mode, and initiating a shallow enrichment PVO mode, when the previous mode of the LTC engine was not the NVO mode.

公开(公告)号：US20190040837A1

公开(公告)日：2019-02-07

申请号：US16074802

申请日：2016-02-23

Applicant: GM Global Technology Operations LLC

Inventor： Hanho Yun ,  Cherian A. Idicheria ,  Paul M. Najt

IPC: F02P5/15 ,  F02P9/00 ,  F02M26/47 ,  F02P15/08

Abstract: A method of controlling pre-primary ignitions of an internal combustion engine includes accessing data corresponding to an exhaust gas recirculation error and data corresponding to at least one of a rotational speed of the engine, a throttle position of a throttle, and a combustion mode of the engine. A voltage of the electrical power to be applied to an ignition source and a number of pre-primary ignitions to be applied are calculated based on the data corresponding to the exhaust gas recirculation error and the data corresponding to at least one of the rotational speed of the engine, the throttle position, and the combustion mode of the engine.

公开(公告)号：US09394838B2

公开(公告)日：2016-07-19

申请号：US14077364

申请日：2013-11-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Orgun A. Guralp ,  Jun-Mo Kang ,  Hanho Yun ,  Sai S. V. Rajagopalan ,  Yongjie Zhu ,  Chen-Fang Chang ,  Paul M. Najt

IPC: F02D41/30 ,  F02D41/00 ,  F02D41/14 ,  F02D13/02 ,  F02D41/04 ,  F02B1/12

CPC classification number: F02D41/0002 ,  F02B1/12 ,  F02D13/0207 ,  F02D13/0219 ,  F02D41/045 ,  F02D41/1454 ,  F02D41/3035 ,  F02D2041/001 ,  F02D2200/602 ,  F02M26/16 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/42

Abstract: An internal combustion engine is configured to operate in a homogeneous-charge compression-ignition combustion mode. A method for operating the internal combustion engine includes determining a desired effective charge dilution for a cylinder charge for a cylinder firing event. A desired air/fuel ratio, a desired intake air mass and a desired intake oxygen are determined to achieve the desired effective charge dilution for a combustion event. The desired air/fuel ratio is adjusted based upon a difference between the desired intake oxygen and the actual intake oxygen, and engine operation is controlled to achieve the adjusted desired air/fuel ratio.

Abstract translation: 内燃机配置为在均质充气压缩点火燃烧模式下操作。 用于操作内燃机的方法包括确定用于气缸点火事件的气缸充气的期望的有效电荷稀释。 确定期望的空气/燃料比，期望的进气质量和期望的进气量，以实现用于燃烧事件的期望的有效电荷稀释。 基于期望的进气氧和实际的进气氧之间的差来调整所需的空气/燃料比，并且控制发动机运转以实现所调整的所需的空气/燃料比。

公开(公告)号：US20150300279A1

公开(公告)日：2015-10-22

申请号：US14256478

申请日：2014-04-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-Mo Kang ,  Orgun A. Guralp ,  Hanho Yun ,  Sai S.V. Rajagopalan ,  Chen-Fang Chang ,  Paul M. Najt

IPC: F02D41/00

CPC classification number: F02D41/0002 ,  F02D41/0007 ,  F02D41/006 ,  F02D41/3035 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2200/0406 ,  F02D2200/703 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/47

Abstract: The method can control a powertrain in order to maintain the charge temperature at a desired value regardless of exhaust manifold pressure or altitude. The method includes the following steps: (a) receiving a torque request; (b) determining a desired air charge based, a least in part, on the torque request; (c) determining an actual air charge based, at least in part, on input signals from a manifold absolute pressure (MAP) sensor and a mass airflow (MAF) sensor; (d) adjusting an intake valve timing of the intake valve such that the actual air charge is equal to a desired air charge, and (e) adjusting throttle position and actuator positions of boosting devices such that the actual intake manifold pressure is equal to the desired intake manifold pressure.

Abstract translation: 该方法可以控制动力系，以便将充气温度保持在期望值，而与排气歧管压力或高度无关。 该方法包括以下步骤：（a）接收扭矩请求; （b）至少部分地基于扭矩请求确定期望的空气充注; （c）至少部分地基于来自歧管绝对压力（MAP）传感器和质量气流（MAF）传感器的输入信号来确定实际空气充量; （d）调节进气门的进气门正时，使得实际空气充注量等于所需的空气充量，（e）调节升压装置的节气门位置和致动器位置，使得实际进气歧管压力等于 所需进气歧管压力。