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公开(公告)号：US20180334983A1
公开(公告)日：2018-11-22
申请号：US15597741
申请日：2017-05-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Gennaro MERLINO , Angelo CANCELLIERI , Umberto FERRARA , Francesco Concetto PESCE , Alessandro FORINA
CPC classification number: F02D41/3827 , F02D41/04 , F02D41/403 , F02D41/405 , F02D2041/389 , F02D2200/06
Abstract: Methods and systems are provided for controlling fuel injections by a fuel injector in a cylinder of an internal combustion engine. First and second fuel injections are applied in each cycle of a piston in the cylinder. First and second electronic control signals are applied to the fuel injector to generate first and second fuel injections by the fuel injector during a first cycle of the piston. A hydraulic fusion state of the generated first and second fuel injections is determined. A parameter of the applied first and second electronic control signals is adjusted in response to determining the hydraulic fusion state and applied to the fuel injector to generate first and second fuel injections by the fuel injector during a second cycle of the piston subsequent to the first cycle.
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公开(公告)号：US20170107928A1
公开(公告)日：2017-04-20
申请号：US15298896
申请日：2016-10-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Angelo CANCELLIERI , Paul Leonardo CLAUDE
CPC classification number: F02D41/2467 , F02D41/20 , F02D41/2416 , F02D41/2432 , F02D41/2438 , F02D41/247 , F02D41/402 , F02D41/403 , F02D2041/2055 , Y02T10/44
Abstract: A first test injection of a fuel injector is performed with a first test Energizing Time and the actual fuel quantity injected is measured to obtain a first point of a characteristic curve representing a relationship between the injector Energizing Time and the fuel quantity which is actually injected. A ratio between the actual fuel quantity injected and a nominal fuel quantity corresponding to the first test Energizing Time is calculated and used to determine a plurality of corrected Energizing Times for subsequent test injections. The subsequent test injections are performed using the corrected Energizing Times and the actual fuel quantity that has been injected during each one of the subsequent test injections is measured to obtain further points of the characteristic curve. The characteristic curve of the fuel injector is modeled based on the obtained further points and used to control the operation of the fuel injector.
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公开(公告)号：US20180142644A1
公开(公告)日：2018-05-24
申请号：US15359847
申请日：2016-11-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Angelo CANCELLIERI
CPC classification number: F02D41/40 , F02D41/2432 , F02D41/2441 , F02D41/2467 , F02D41/263 , F02D2200/0602 , F02M63/0275 , F02M65/003
Abstract: Methods and systems are provided for controlling fuel injectors included in a fuel injection system of an internal combustion engine of a vehicle. The fuel injection system includes a fuel rail. The methods and systems measure data for the fuel injector relating fuel injection flow rate and fuel injector energization time at a first rail pressure. The methods and systems transform the measured data using a correlation function t to correlated data relating fuel injection flow rate and injector energization time at a second rail pressure different from the first rail pressure. The methods and systems control the fuel injector using the correlated data relating fuel injection flow rate and injector energization time.
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公开(公告)号：US20170107927A1
公开(公告)日：2017-04-20
申请号：US15298888
申请日：2016-10-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Serena TORDIN , Valerio NUZZO , Paul Leonardo CLAUDE , Angelo CANCELLIERI
CPC classification number: F02D41/2464 , F02D41/123 , F02D41/1454 , F02D41/1456 , F02D41/182 , F02D41/2432 , F02D41/247 , F02D41/248 , F02D41/402 , F02D2041/389 , F02D2200/0406 , F02D2200/0414 , F02D2200/0602 , F02D2200/0616 , F02D2250/31
Abstract: A method of operating a fuel injector of an internal combustion engine includes setting a value of a target fuel quantity to be injected by the fuel injector, initializing a value of a fuel quantity requested from the fuel injector to the value of the target fuel quantity, and correcting the value of the requested fuel quantity. A first learning cycle is performed to correct the value of the requested fuel quantity in which a difference between the target fuel quantity and the injected fuel quantity is calculated and added to the requested fuel quantity to provide a corrected value. The corrected value of the requested fuel quantity is used to determine a reference value of an energizing time that causes the fuel injector to inject a fuel quantity corresponding to the target fuel quantity. The fuel injector is operated based on the determined reference value of the energizing time.
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