-
公开(公告)号：US20170298883A1
公开(公告)日：2017-10-19
申请号：US15097644
申请日：2016-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Azeem Sarwar , Chaitanya Sankavaram , Rafat Hattar , Matthew Hamilton , Jonathan Pung
CPC classification number: F02M59/368 , F02D41/1401 , F02D41/3845 , F02D2041/1412 , F02D2041/1422 , F02D2041/224 , F02D2041/228 , F02M59/366 , F02M59/367 , F02M59/464 , F02M59/466
Abstract: An engine fuel delivery system includes a fuel pump having a pumping chamber to increase fuel pressure and a closeable inlet valve, and a fuel rail to communicate pressurized fuel received from the fuel pump to at least one engine cylinder. The engine fuel delivery system also includes a controller programmed to issue a control signal to periodically close the inlet valve to generate a setpoint fuel pressure within the pumping chamber. The controller is also programmed to adjust a control signal gain value in response to deviation in an outlet fuel pressure relative to the setpoint fuel pressure. The controller is further programmed to issue a warning message in response to the control signal gain being adjusted by more than a predetermined threshold from a calibrated gain value.
-
公开(公告)号：US20250147187A1
公开(公告)日：2025-05-08
申请号：US18502653
申请日：2023-11-06
Applicant: GM Global Technology Operations LLC
Inventor： Azeem Sarwar , Md Mhafuzul Islam
IPC: G01S17/931 , G01B11/06 , G01S7/481 , G01V8/10
Abstract: A system for determining vertical clearance for a vehicle may include a first ranging sensor operable to measure a distance relative to an object surrounding the vehicle. The system further may include a display operable to provide information to an occupant of the vehicle. The system further may include a controller in electrical communication with the first ranging sensor and the display. The controller is programmed to determine a minimum required vertical clearance based at least in part on a height of the vehicle. The controller is further programmed to determine a maximum available vertical clearance using the first ranging sensor. The controller is further programmed to provide a warning to the occupant of the vehicle using the display in response to determining that the maximum available vertical clearance is less than or equal to the minimum required vertical clearance.
-
公开(公告)号：US20200372729A1
公开(公告)日：2020-11-26
申请号：US16420687
申请日：2019-05-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shiming DUAN , Chaitanya Sankavaram , Azeem Sarwar , Ibrahim Haskara , Chunhao J. Lee , Chen-fang Chang
Abstract: A fault diagnostic system includes: memory including a fault model, the fault model including: a plurality of failure modes of a vehicle; and symptoms respectively associated with each of the failure modes; an updating module configured to: based on a data set, determine a new failure mode that is not already included in the fault model and new symptoms indicative of the occurrence of the new failure mode; modify the fault model by: adding the new failure mode to the fault model; and adding the new symptoms to the fault model in association with the new failure mode; and re-save the fault model in the memory.
-
公开(公告)号：US20200224601A1
公开(公告)日：2020-07-16
申请号：US16247746
申请日：2019-01-15
Applicant: GM Global Technology Operations LLC
Inventor： Ibrahim Haskara , Chen-fang Chang , Shiming Duan , Chunhao J. Lee , Azeem Sarwar
Abstract: A method of diagnosing a propulsion system implements a top-down hierarchical examination procedure, in which the propulsion system is analyzed as a whole to determine if the propulsion system is healthy. Data from a first set of vehicle sensors is compared to a system-healthy data cluster to determine if the propulsion system is healthy or unhealthy. If the propulsion system is unhealthy, then a plurality of subsystems of the propulsion system are each analyzed at a first examination level using selective data from the sensors to identify one of the subsystems as an unhealthy subsystem. A plurality of component systems of the unhealthy subsystem are then analyzed at a second examination level using other selective data from the sensors to identify one of the component systems of the unhealthy subsystem as an unhealthy component system.
-
公开(公告)号：US10481600B2
公开(公告)日：2019-11-19
申请号：US15705394
申请日：2017-09-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chih-hung Yen , Yao Hu , Yilu Zhang , Paul E. Krajewski , Steven W. Holland , Mutasim A. Salman , Xiaoyu Huang , Azeem Sarwar
Abstract: Systems and method are provided for collaboration between autonomous vehicles. In one embodiment, a processor-implemented method for coordinating travel between multiple autonomous vehicles is provided. The method includes sending a collaboration request to one or more vehicles in an area to form a group to perform a mission, receiving an acceptance of the collaboration request to join the group wherein the group includes a plurality of vehicles, cooperating in assigning leading functions for the group to one or more of the plurality of vehicles in the group, cooperating in mission negotiations for the group, cooperating in determining a formation for the group, and cooperating in generating a trajectory for the group. The vehicles in the group are operated in accordance with the determined formation and generated trajectory.
-
Patent Agency Ranking
公开(公告)号：US20190066406A1
公开(公告)日：2019-02-28
申请号：US15688440
申请日：2017-08-28
Applicant: GM Global Technology Operations LLC.
Inventor： Azeem Sarwar , Steven W. Holland , Paul E. Krajewski
IPC: G07C5/08
Abstract: A vehicle control system includes a plurality of components that are disposed to effect a vehicle function and a controller in communication with the plurality of components. A method for controlling the vehicle includes monitoring states of health (SOHs) of the plurality of components. Upon detecting a change in status of the SOH of the subject component, an allowable window of operation for the subject component and an allowable window of operation for the related component are determined, and operating constraints related to the vehicle function are determined based upon the allowable windows of operation for the subject component and the related component. Operation of the vehicle is controlled subject to the operating constraints related to the vehicle function.
-
公开(公告)号：US20190066399A1
公开(公告)日：2019-02-28
申请号：US15688457
申请日：2017-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shengbing Jiang , Xinyu Du , Steven W. Holland , Chaitanya Sankavaram , Azeem Sarwar , Shiming Duan
CPC classification number: G07C5/006 , G05D1/0088 , G07C5/008 , G07C5/0808
Abstract: A controller architecture for monitoring an autonomic vehicle control system includes a first controller, a second controller, a telematics controller, a third controller, a plurality of subsystem controllers, a first and a second communication bus, and a first and a second communication link. The telematics controller in communication with the first controller. The second controller includes a second processor and a second memory device. Each subsystem controller is configured to effect operation of one of a subsystem, wherein each of the subsystem controllers includes a vehicle health monitor (VHM) agent. The third controller includes a third processor and a third memory device. A first instruction set includes a prognostic classification routine based upon inputs from the VHM agents of the plurality of subsystem controllers. The telematics controller is disposed to communicate an output from the prognostic classification routine to an off-board controller.
-
公开(公告)号：US20190066398A1
公开(公告)日：2019-02-28
申请号：US15688422
申请日：2017-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chaitanya Sankavaram , Steven W. Holland , Shiming Duan , Azeem Sarwar , Yao Hu , Paul E. Krajewski , Yilu Zhang
Abstract: A method and associated device for automated maintenance scheduling for an autonomous vehicle includes monitoring a state of health (SOH) of an on-vehicle subsystem and monitoring an appointment log associated with a vehicle operator. Upon detecting a change in the SOH of the on-vehicle subsystem, the method includes communicating with a service center to determine a recommended maintenance action associated with the change in the SOH of the on-vehicle subsystem and to determine a proposed service appointment for the autonomous vehicle to effect the recommended maintenance action. The proposed service appointment is coordinated with the appointment log, and verified with the vehicle operator. A service appointment is scheduled based upon the proposed service appointment when verified by the vehicle operator. The appointment log is updated to include the service appointment.
-
公开(公告)号：US10167803B2
公开(公告)日：2019-01-01
申请号：US15169802
申请日：2016-06-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Azeem Sarwar , Chaitanya Sankavaram , Ian J. Macewen , Steven Ward Majors , Scott R. Jeffrey , Rafat F. Hattar
Abstract: An engine includes a plurality of combustion cylinders configured to burn a fuel to power the engine, and a plurality of fuel injectors. Each of the fuel injectors is arranged to distribute fuel delivered from a fuel tank to one of the plurality of combustion cylinders. The engine also includes a controller programmed to adjust a fuel trim signal gain based on sensing exhaust flow downstream of the combustion cylinders. The controller is also programmed to monitor a cumulative misfire count for each of the plurality of combustion cylinders. The controller is further programmed to issue a prognosis message identifying a state of health of at least one of the plurality of fuel injectors in response to a fuel trim signal gain exceeding an adjustment threshold and a cumulative misfire count greater than a misfire threshold.
-
公开(公告)号：US10161370B2
公开(公告)日：2018-12-25
申请号：US15097644
申请日：2016-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Azeem Sarwar , Chaitanya Sankavaram , Rafat Hattar , Matthew Hamilton , Jonathan Pung
Abstract: An engine fuel delivery system includes a fuel pump having a pumping chamber to increase fuel pressure and a closeable inlet valve, and a fuel rail to communicate pressurized fuel received from the fuel pump to at least one engine cylinder. The engine fuel delivery system also includes a controller programmed to issue a control signal to periodically close the inlet valve to generate a setpoint fuel pressure within the pumping chamber. The controller is also programmed to adjust a control signal gain value in response to deviation in an outlet fuel pressure relative to the setpoint fuel pressure. The controller is further programmed to issue a warning message in response to the control signal gain being adjusted by more than a predetermined threshold from a calibrated gain value.
-
-
-
-
-
-
-
-
-
Search Results
42
records
(took 0.021 seconds)
