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公开(公告)号：US20230020219A1
公开(公告)日：2023-01-19
申请号：US17377723
申请日：2021-07-16
Applicant: GM Global Technology Operations LLC
Inventor： Insu Chang , SeungHwan Keum , Jun-mo Kang , Young J. Kim
Abstract: A system and method of active endturn cooling of an electric motor of a vehicle is provided. The method comprises providing a motor having a coolant nozzle and a cam, and measuring speed, lateral acceleration, and road tilt angle of coolant due to road tilt. The method further comprises calculating coolant angle and coolant acceleration angle based on the road tilt angle and the lateral acceleration if the speed is greater than zero. The method further comprises comparing the coolant angle with a critical angle. The method further comprises calculating a first control angle and a first coolant distance based on the road tilt angle and the lateral acceleration of the vehicle if the acceleration angle is greater than the critical angle. The method further comprises determining a cam position based on the first control angle. The method further comprises moving the cam to the position to move the nozzle and compensate for the lateral acceleration such that coolant drops within a target area of the motor.
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公开(公告)号：US20210016626A1
公开(公告)日：2021-01-21
申请号：US16511811
申请日：2019-07-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Insu Chang , Chen-fang Chang , Jun-mo Kang
IPC: B60H1/00
Abstract: An air conditioning system for a vehicle includes a compressor, a condenser fluidically connected to the compressor, an evaporator fluidically connected to the compressor and the condenser, an air moving device positioned to direct a flow of air over the evaporator, a route planning module that provides route planning for the vehicle between a first point and a destination, and an air conditioning controller operatively connected to the compressor, the air moving device, the air conditioning controller including a processor and a non-volatile memory, the processor being operable to deactivate the compressor at a selected point before the vehicle reaches the destination.
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公开(公告)号：US10371116B2
公开(公告)日：2019-08-06
申请号：US15836183
申请日：2017-12-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Junfeng Zhao , Jun-mo Kang
Abstract: A multi-cylinder spark-ignition internal combustion engine includes a monitored cylinder and a plurality of non-monitored cylinders, a pressure sensor disposed to monitor in-cylinder pressure in the monitored cylinder and a rotational position sensor. The controller is in communication with the pressure sensor, the rotational position sensor and the spark controller. The controller monitors, via the pressure sensor, in-cylinder pressure for the monitored cylinder during a combustion event, and determines a first spark timing based upon a desired spark timing and the in-cylinder pressure. A spark controller controls spark timing for the monitored cylinder based upon the final spark timing. The controller monitors, via the rotational position sensor, engine rotational speed and crankshaft speed pulsations associated with the monitored cylinder and the non-monitored cylinders, and determines a modal coefficient for the non-monitored cylinders based upon the engine rotational speed and the crankshaft speed pulsations.
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Patent Agency Ranking
公开(公告)号：US20190178223A1
公开(公告)日：2019-06-13
申请号：US15836183
申请日：2017-12-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Junfeng Zhao , Jun-mo Kang
CPC classification number: F02P5/153 , F02D35/023 , F02D41/008 , F02D41/1497 , F02D2200/101 , F02P5/045 , F02P5/1512
Abstract: A multi-cylinder spark-ignition internal combustion engine includes a monitored cylinder and a plurality of non-monitored cylinders, a pressure sensor disposed to monitor in-cylinder pressure in the monitored cylinder and a rotational position sensor. The controller is in communication with the pressure sensor, the rotational position sensor and the spark controller. The controller monitors, via the pressure sensor, in-cylinder pressure for the monitored cylinder during a combustion event, and determines a first spark timing based upon a desired spark timing and the in-cylinder pressure. A spark controller controls spark timing for the monitored cylinder based upon the final spark timing. The controller monitors, via the rotational position sensor, engine rotational speed and crankshaft speed pulsations associated with the monitored cylinder and the non-monitored cylinders, and determines a modal coefficient for the non-monitored cylinders based upon the engine rotational speed and the crankshaft speed pulsations.
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75.发明授权公开(公告)号：US10273928B1
公开(公告)日：2019-04-30
申请号：US15796019
申请日：2017-10-27
Applicant: GM Global Technology Operations LLC
Inventor： Junfeng Zhao , Jun-mo Kang , Yiran Hu
Abstract: Disclosed are model-based combustion timing systems and control logic for engine assemblies, methods for making/operating such engine assemblies, and motor vehicles with spark-ignited engine assemblies implementing model-based combustion timing. A method for controlling torque output of an engine assembly includes receiving a requested torque demand for the engine, and determining a current fuel command and valve timing for the engine's power cylinder(s). A first math model is used to determine a desired CA50 based on the requested torque demand, a power cylinder indicated mean effective pressure (IMEP), an expander cylinder IMEP, and the current fuel command/valve timing. A second math model is used to determine a maximum brake torque (MBT) CA50 based on power cylinder and expander cylinder IMEPs, and current fuel command/valve timing. An engine control unit determines a final spark timing based on a correlation between the desired CA50 and MBT CA50, modified by a spark timing gain.
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公开(公告)号：US10215576B2
公开(公告)日：2019-02-26
申请号：US15247243
申请日：2016-08-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jun-mo Kang , Yiran Hu , Steven E. Muldoon , Chen-fang Chang , Dongxu Li , Junfeng Zhao
Abstract: A method for generating energy-optimized travel routes with a vehicle navigation system includes generating candidate travel routes between a route origin and one or more route destinations, and then dividing each candidate travel route into a plurality of route segments. The method includes estimating expected travel speeds along each segment using cloud information and calculating an expected energy efficiency over each of the candidate travel routes using one or more vehicle-specific energy efficiency models. The travel routes are displayed via the navigation system, including a trace of the energy-optimized travel routes and an expected or relative energy efficiency along the energy-optimized travel routes. A vehicle includes the navigation system and a powertrain. A powertrain controller may control vehicle speed over a selected route to maintain an optimally energy-efficient speed.
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公开(公告)号：US10208699B2
公开(公告)日：2019-02-19
申请号：US15641944
申请日：2017-07-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiran Hu , Jun-mo Kang , Steven E. Muldoon , Chen-fang Chang
Abstract: A direct-injection internal combustion engine is described and includes a pressure sensor that is disposed to monitor in-cylinder combustion pressure. A method, executed as a control routine in an attached controller, includes monitoring engine speed, engine load, temperature and combustion pressure. Combustion variation parameters are determined based upon the combustion pressure. A desired state for a combustion parameter can be determined based upon the engine speed, the engine load, and the temperature, and an adjustment to the desired state for the combustion parameter can be determined based upon the combustion variation parameters, wherein the adjustment to the desired state is selected to achieve acceptable states for the combustion variation parameters. Operation of the internal combustion engine is controlled based upon the desired state for the combustion parameter and the adjustment to the desired state for the combustion parameter.
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公开(公告)号：US20180058868A1
公开(公告)日：2018-03-01
申请号：US15247243
申请日：2016-08-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jun-mo Kang , Yiran Hu , Steven E. Muldoon , Chen-fang Chang , Dongxu Li , Junfeng Zhao
CPC classification number: G01C21/3469 , B60K6/22 , B60K6/50 , B60W20/12 , B60Y2200/92 , B60Y2300/244 , G01C21/343 , G01C21/3492 , G01C21/3605 , G01C21/3626 , G01C21/3655 , G01C21/3667 , G01C21/3691 , Y10S903/904 , Y10S903/915
Abstract: A method for generating energy-optimized travel routes with a vehicle navigation system includes generating candidate travel routes between a route origin and one or more route destinations, and then dividing each candidate travel route into a plurality of route segments. The method includes estimating expected travel speeds along each segment using cloud information and calculating an expected energy efficiency over each of the candidate travel routes using one or more vehicle-specific energy efficiency models. The travel routes are displayed via the navigation system, including a trace of the energy-optimized travel routes and an expected or relative energy efficiency along the energy-optimized travel routes. A vehicle includes the navigation system and a powertrain. A powertrain controller may control vehicle speed over a selected route to maintain an optimally energy-efficient speed.
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