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1.发明申请公开(公告)号：US20150218978A1
公开(公告)日：2015-08-06
申请号：US14260608
申请日：2014-04-24
Applicant: GM Global Technology Operations LLC
Inventor： RONALD J. KUBANI , Scott T. Feldmann , Donovan L. Dibble
IPC: F01L13/00
CPC classification number: F01L13/0015 , F01L1/185 , F01L1/2405 , F01L1/46 , F01L3/24 , F01L13/0036 , F01L2001/186 , F01L2013/11 , F01L2013/118 , F01L2800/11 , F01L2820/01
Abstract: A system according to the principles of the present disclosure includes a valve lift determination module and a fault detection module. The valve lift determination module determines valve lift based on at least one of a first period when a valve is open and N differences between a first value of a valve lift signal generated by a valve lift sensor when the valve is closed and a second value of the valve lift signal when the valve is open, wherein N is an integer greater than one. The fault detection module detects a fault in a valve actuator based on the valve lift.
Abstract translation: 根据本公开的原理的系统包括气门升程确定模块和故障检测模块。 阀升程确定模块基于阀打开的第一周期和阀闭合时由气门升程传感器产生的阀提升信号的第一值之间的N个差异和第二值 阀打开时的气门升程信号，其中N是大于1的整数。 故障检测模块基于气门升程来检测阀门执行器中的故障。
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公开(公告)号：US11098666B1
公开(公告)日：2021-08-24
申请号：US17035088
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Vijay A. Ramappan , Michael J. Lucido , Jeffrey M. Hutmacher , Scott T. Feldmann , Randy L. Dufresne
Abstract: A system includes a three-way catalyst (TWC) sulfur load module, a cylinder/fuel cutoff module, a fuel control module, and a valve control module. The TWC sulfur load module is configured to determine an amount of sulfur deposited on a three-way catalyst of an engine in a vehicle. The cylinder/fuel cutoff module is configured to determine whether to enable deceleration cylinder cutoff (DCCO) based on the amount of sulfur deposited on the three-way catalyst. The fuel control module is configured to control a fuel injector to selectively stop fuel injection in the engine when DCCO is enabled. The valve control module is configured to selectively maintain intake and exhaust valves of the engine in a closed position when DCCO is enabled.
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公开(公告)号：US20180340484A1
公开(公告)日：2018-11-29
申请号：US15603794
申请日：2017-05-24
Applicant: GM Global Technology Operations LLC
Inventor： Etsuko Stewart , Timothy P. Philippart , Scott T. Feldmann , Zhong Li
Abstract: A method is provided for operating a three step camshaft system during engine position sensor fault conditions. The three step camshaft has multiple cam actuators each having an actuator pin. The method includes: disposing multiple camshaft barrels on a camshaft, each barrel having a slot receiving the actuator pin of a cam actuator during camshaft barrel rotation axially displacing each camshaft barrel to a high lift lobe position, a low lift lobe position and an active fuel management (AFM) lobe position; determining if an engine position sensor is in a fault condition; identifying if the fault condition occurs simultaneously with any of the camshaft barrels positioned in the AFM lobe position; energizing selected cam actuators in communication with the camshaft barrels positioned in the AFM lobe position to axially displace the camshaft barrel away from the AFM lobe position and to the low lift lobe position.
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公开(公告)号：US11156179B1
公开(公告)日：2021-10-26
申请号：US17038420
申请日：2020-09-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew A. Raftopoulos , Michael A. Smith , Robert Gallon , Pratap S. Murthy , Scott T. Feldmann
Abstract: A system includes a fuel control module and a valve control module. The fuel control module controls a fuel injector to stop fuel delivery to each cylinder of an engine in a vehicle when the vehicle is decelerating. The valve control module controls a valve actuator to actuate intake and exhaust valves of each cylinder of the engine between open and closed positions when fuel delivery to each cylinder of the engine is stopped. The valve control module controls the valve actuator to adjust an amount of airflow through each cylinder of the engine to a minimum amount when fuel delivery to each cylinder of the engine is initially stopped. The valve control module controls the valve actuator to adjust the amount of airflow through each cylinder of the engine to an amount greater than the minimum amount before fuel delivery to each cylinder of the engine is restarted.
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Patent Agency Ranking
公开(公告)号：US10954830B1
公开(公告)日：2021-03-23
申请号：US16553437
申请日：2019-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Etsuko M. Stewart , Scott T. Feldmann , Pratap S. Murthy
Abstract: A control system of a vehicle includes: an electric motor configured to phase rotation of an camshaft of an engine relative to rotation of a crankshaft of the engine; a current module configured to, while the engine is off: selectively transition a current signal back and forth between a first state and a second state; and a motor driver module configured to, while the engine is off: apply power to the electric motor from a battery and adjust a position of the camshaft toward a predetermined position when the current signal is in the first state; and disconnect the electric motor from the battery and allow the position of the camshaft to move away from the predetermined position when the current signal is in the second state.
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公开(公告)号：US20210062690A1
公开(公告)日：2021-03-04
申请号：US16553437
申请日：2019-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Etsuko M. STEWART , Scott T. Feldmann , Pratap S. Murthy
Abstract: A control system of a vehicle includes: an electric motor configured to phase rotation of an camshaft of an engine relative to rotation of a crankshaft of the engine; a current module configured to, while the engine is off: selectively transition a current signal back and forth between a first state and a second state; and a motor driver module configured to, while the engine is off: apply power to the electric motor from a battery and adjust a position of the camshaft toward a predetermined position when the current signal is in the first state; and disconnect the electric motor from the battery and allow the position of the camshaft to move away from the predetermined position when the current signal is in the second state.
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公开(公告)号：US10480444B2
公开(公告)日：2019-11-19
申请号：US15603794
申请日：2017-05-24
Applicant: GM Global Technology Operations LLC
Inventor： Etsuko Stewart , Timothy P. Philippart , Scott T. Feldmann , Zhong Li
Abstract: A method is provided for operating a three step camshaft system during engine position sensor fault conditions. The three step camshaft has multiple cam actuators each having an actuator pin. The method includes: disposing multiple camshaft barrels on a camshaft, each barrel having a slot receiving the actuator pin of a cam actuator during camshaft barrel rotation axially displacing each camshaft barrel to a high lift lobe position, a low lift lobe position and an active fuel management (AFM) lobe position; determining if an engine position sensor is in a fault condition; identifying if the fault condition occurs simultaneously with any of the camshaft barrels positioned in the AFM lobe position; energizing selected cam actuators in communication with the camshaft barrels positioned in the AFM lobe position to axially displace the camshaft barrel away from the AFM lobe position and to the low lift lobe position.
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公开(公告)号：US20180274397A1
公开(公告)日：2018-09-27
申请号：US15468508
申请日：2017-03-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Klaus Pochner , Uwe Steinmann , Kea Hyuk Chang , Scott T. Feldmann , Jon C. Wasberg
CPC classification number: F01L1/3442 , F01L2001/34426 , F01L2001/3443 , F01L2013/111 , F01L2201/00 , F01L2800/00 , F01L2820/041 , F02D13/02 , F02D13/0219 , F02D41/20 , F02D2041/001 , F02D2041/2027 , Y02T10/18
Abstract: A method, control system, and variable valve timing system are provided for controlling an actuator that can be switched into an on state and an off state with pulse width modulation. The systems and method include controls configured to determine an actual system parameter on a first time schedule and a desired system parameter on a second time schedule. On a third time schedule, a position error difference between the actual system parameter and the desired system parameter is determined. The third time schedule is configured to begin and to determine the position error difference each time that the actual system parameter is determined and each time that the desired system parameter is determined. A desired duty cycle is determined, and a duty cycle command is sent to a pulse width modulation output unit.
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9.发明授权System and method for measuring valve lift and for detecting a fault in a valve actuator based on the valve lift 有权基于气门升程测量阀门升程和检测阀门执行机构故障的系统和方法公开(公告)号：US09506381B2
公开(公告)日：2016-11-29
申请号：US14260608
申请日：2014-04-24
Applicant: GM Global Technology Operations LLC
Inventor： Ronald J. Kubani , Scott T. Feldmann , Donovan L. Dibble
CPC classification number: F01L13/0015 , F01L1/185 , F01L1/2405 , F01L1/46 , F01L3/24 , F01L13/0036 , F01L2001/186 , F01L2013/11 , F01L2013/118 , F01L2800/11 , F01L2820/01
Abstract: A system according to the principles of the present disclosure includes a valve lift determination module and a fault detection module. The valve lift determination module determines valve lift based on at least one of a first period when a valve is open and N differences between a first value of a valve lift signal generated by a valve lift sensor when the valve is closed and a second value of the valve lift signal when the valve is open, wherein N is an integer greater than one. The fault detection module detects a fault in a valve actuator based on the valve lift.
Abstract translation: 根据本公开的原理的系统包括气门升程确定模块和故障检测模块。 阀升程确定模块基于阀打开的第一周期和阀闭合时由气门升程传感器产生的阀提升信号的第一值之间的N个差异和第二值 阀打开时的气门升程信号，其中N是大于1的整数。 故障检测模块基于气门升程来检测阀门执行器中的故障。
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