-
公开(公告)号：US10808594B2
公开(公告)日：2020-10-20
申请号：US15958242
申请日：2018-04-20
Applicant: GM Global Technology Operations LLC
Inventor： Daniel S. Dimoski , Brian P. Hannon, Jr. , Vijay Ramappan
Abstract: A system providing an approach for catalytic converter warmup mode is applicable to multiple vehicle applications including hybrid vehicles. The system determines exhaust enthalpy during conditions including transient engine speed and transient engine load for a catalytic converter receiving exhaust output from an engine. Multiple exhaust parameter measurement devices each measure exhaust conditions entering the catalytic converter. A processor receives output from each of the exhaust parameter measurement devices and continuously calculates an enthalpy of the catalytic converter. The calculated enthalpy of the catalytic converter is repeatedly compared to a predetermined enthalpy threshold required to achieve catalytic light-off saved in a memory.
-
公开(公告)号：US10480391B2
公开(公告)日：2019-11-19
申请号：US14495141
申请日：2014-09-24
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. Gonze , Yue-Ming Chen , Vijay Ramappan , Ben W. Moscherosch
Abstract: A coolant control system of a vehicle includes first and second target flowrate modules, a target speed module, and a speed control module. The first target flowrate module determines a first target flowrate of coolant through an engine. The second target flowrate module, when a change in heat input to the engine is greater than a predetermined value, sets a second target flowrate to greater than the first target flowrate. The target speed module determines a target speed of an engine coolant pump based on the second target flowrate. The speed control module controls a speed of the engine coolant pump based on the target speed.
-
公开(公告)号：US20190323407A1
公开(公告)日：2019-10-24
申请号：US15958242
申请日：2018-04-20
Applicant: GM Global Technology Operations LLC
Inventor： Daniel S. Dimoski , Brian P. Hannon, JR. , Vijay Ramappan
Abstract: A system providing an approach for catalytic converter warmup mode is applicable to multiple vehicle applications including hybrid vehicles. The system determines exhaust enthalpy during conditions including transient engine speed and transient engine load for a catalytic converter receiving exhaust output from an engine. Multiple exhaust parameter measurement devices each measure exhaust conditions entering the catalytic converter. A processor receives output from each of the exhaust parameter measurement devices and continuously calculates an enthalpy of the catalytic converter. The calculated enthalpy of the catalytic converter is repeatedly compared to a predetermined enthalpy threshold required to achieve catalytic light-off saved in a memory.
-
公开(公告)号：US09869223B2
公开(公告)日：2018-01-16
申请号：US14466289
申请日：2014-08-22
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. Gonze , Vijay Ramappan , Michael J. Paratore, Jr. , Yue-Ming Chen
CPC classification number: F01N3/046 , F01N9/00 , F01N13/105 , F01N2260/024 , F01N2900/0408 , F01N2900/08 , F01N2900/1631 , F01P7/16 , Y02T10/20 , Y02T10/47
Abstract: A method is disclosed for optimizing fuel economy during an engine warm up phase of operation of an internal combustion engine. An exhaust manifold may have a coolant jacket through which a coolant may flow. A temperature of the coolant in the exhaust manifold may be determined to detect when it is at a predetermined maximum threshold, which represents a temperature threshold just below a temperature at which the coolant will begin to boil. When this threshold is reached, then a determination may be made as to a minimum rate of flow of the coolant through the exhaust manifold which maintains the coolant at about the predetermined maximum threshold, and the coolant may be flowed through the exhaust manifold at the determined minimum rate of flow.
-
公开(公告)号：US09719406B2
公开(公告)日：2017-08-01
申请号：US14593157
申请日：2015-01-09
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. Gonze , Yue-Ming Chen , Vijay Ramappan
CPC classification number: F01P7/164 , F01P7/14 , F01P2007/146 , F01P2025/32 , F01P2025/64 , F01P2037/00
Abstract: A coolant control system of a vehicle includes a coolant valve control module and a pump control module. The coolant valve control module determines a position of a coolant valve. The pump control module determines a speed of a coolant pump based on the position of the coolant valve and a desired coolant output temperature, measures a coolant output temperature, determines a difference between the desired coolant output temperature and the measured coolant output temperature, generates a correction factor based on the difference between the desired coolant output temperature and the measured coolant output temperature, and applies the correction factor to the speed of the coolant pump.
-
Patent Agency Ranking
6.发明授权公开(公告)号：US09540987B2
公开(公告)日：2017-01-10
申请号：US14495037
申请日：2014-09-24
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. Gonze , Vijay Ramappan , Yue-Ming Chen
CPC classification number: F01P7/14 , F01P7/164 , F01P11/14 , F01P2007/146 , F01P2025/30 , F01P2025/32 , F16K5/08 , G01B21/16
Abstract: A system according to the principles of the present disclosure includes a coolant valve, a valve control module, and a fault diagnostic module. The coolant valve includes a first valve chamber, a second valve chamber, and a partition disposed between the first and second valve chambers. The coolant valve further includes a first end stop disposed on a first outer perimeter surface of the first valve chamber and a second end stop disposed on a second outer perimeter surface of the second valve chamber. The valve control module rotates the coolant valve in a first direction and in a second direction that is opposite from the first direction. The fault diagnostic module diagnoses a fault in the coolant valve based on a measured position of the coolant valve as the coolant valve is rotated in the first and second directions.
Abstract translation: 根据本公开的原理的系统包括冷却剂阀，阀控制模块和故障诊断模块。 冷却剂阀包括第一阀室，第二阀室和设置在第一和第二阀室之间的隔板。 所述冷却剂阀还包括设置在所述第一阀室的第一外周表面上的第一端部止动件和设置在所述第二阀室的第二外周表面上的第二端部止动件。 阀控制模块沿与第一方向相反的第一方向和第二方向旋转冷却剂阀。 故障诊断模块基于冷却剂阀在第一和第二方向旋转时的测量位置来诊断冷却剂阀中的故障。
-
公开(公告)号：US09506420B2
公开(公告)日：2016-11-29
申请号：US13756869
申请日：2013-02-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vijay Ramappan , Darrell W. Burleigh , Gerald W. Fly
CPC classification number: F02D43/04 , F02D37/02 , F02D41/0002 , F02D41/0072 , F02D41/0077 , F02D41/1446 , F02D41/1454 , F02D41/30 , F02D2200/0418 , F02D2200/0611 , Y02T10/47
Abstract: An engine control system for a vehicle includes an exhaust gas recirculation (EGR) rate-estimation module and a control module. The EGR rate-estimation module receives a first signal indicating a first relative humidity of a flow of air and a second signal indicating a second relative humidity of a mixed flow of air and exhaust gas. The EGR rate-estimation module determines an estimated EGR rate based on the first relative humidity and the second relative humidity, wherein the estimated EGR rate corresponds to a flow rate of a flow of exhaust gas to an engine. The control module selectively adjusts an engine operating parameter based on the estimated EGR rate.
Abstract translation: 用于车辆的发动机控制系统包括废气再循环（EGR）速率估计模块和控制模块。 EGR率估计模块接收指示空气流的第一相对湿度的第一信号和表示空气和废气的混合流的第二相对湿度的第二信号。 EGR率估计模块基于第一相对湿度和第二相对湿度来确定估计的EGR率，其中估计的EGR率对应于排放到发动机的排气流量。 控制模块基于估计的EGR率来选择性地调节发动机工作参数。
-
公开(公告)号：US11168627B2
公开(公告)日：2021-11-09
申请号：US16686728
申请日：2019-11-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Dale A. Frank , Ryan J. Prescott , Manoj K. Moningi , Michael J. Lucido , Vijay Ramappan
IPC: F02D41/00 , F02D41/14 , F02D41/22 , F02D41/30 , F02D17/02 , F02D13/06 , F02D41/34 , F01L13/00 , F02D41/24
Abstract: Systems and methods are provided for determining and correcting air/fuel imbalance between cylinders of an internal combustion engine. A deactivation strategy is determined and implemented. An evaluation is made of whether the engine is operating with an air/fuel imbalance between cylinders. When an imbalance is identified, an alternate deactivation strategy is implemented. Based on outcomes of the alternate deactivation strategy, a source cylinder of the air/fuel imbalance is identified, and fuel flow to the source cylinder is corrected.
-
公开(公告)号：US09599011B2
公开(公告)日：2017-03-21
申请号：US14495265
申请日：2014-09-24
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. Gonze , Vijay Ramappan , Yue-Ming Chen
CPC classification number: F01P11/18 , F01P5/14 , F01P11/14 , F04B51/00 , G01F15/005
Abstract: A pump current module determines a first current flowing through an electric engine coolant pump based on a coolant valve position. A current error module receives a second current flowing through the electric engine coolant pump measured using a current sensor and determines a current error based on a difference between the first current and the second current. A fault module indicates whether a fault is present based on the current error.
-
公开(公告)号：US20160281584A1
公开(公告)日：2016-09-29
申请号：US14669097
申请日：2015-03-26
Applicant: GM Global Technology Operations LLC
Inventor： Eugene V. GONZE , Yue-Ming Chen , Vijay Ramappan , Christopher Harold Knieper
IPC: F01P7/14
CPC classification number: F01P11/16 , F01P3/20 , F01P2031/30 , F01P2050/24 , F01P2060/18
Abstract: A system includes a coolant management module that, determines whether an engine of a vehicle is off, determines, in response to a determination that the engine is off, whether a heater associated with the engine is on, receives one of a plurality of engine coolant temperature (ECT) measurements and a respective location associated with the received ECT measurement, and communicates the respective location and an instruction to direct engine coolant flow from the respective location to one of the heater and engine. The system also includes a coolant control module that selectively actuates one or more coolant control valves based on the respective location and the instruction.
Abstract translation: 一种系统包括：冷却剂管理模块，其确定车辆的发动机是否关闭，响应于发动机关闭的确定，确定与发动机相关联的加热器是否接通，接收多个发动机冷却剂中的一个 温度（ECT）测量和与接收到的ECT测量相关联的相应位置，并且传送相应位置和指令，以将发动机冷却剂流从相应位置引导到加热器和发动机之一。 该系统还包括冷却剂控制模块，其基于相应的位置和指令选择性地致动一个或多个冷却剂控制阀。
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.02 seconds)
