-
1.发明申请公开(公告)号：US20150032359A1
公开(公告)日：2015-01-29
申请号：US14446090
申请日：2014-07-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Serena TORDIN
CPC classification number: F02D41/182 , F02D41/1456 , F02D41/2467 , F02D41/34
Abstract: A method of correcting operating set points of an internal combustion engine is disclosed. The method includes predetermining an oxygen sensor time correction factor representative of a delay between a combustion event of a fuel quantity injected into a cylinder of the engine and a measurement in the exhaust pipe of an air-to-fuel ratio produced by said combustion event; calculating a fuel injection error quantity as a difference between a nominal fuel quantity and an estimated fuel quantity injected into the cylinder, the nominal fuel quantity being determined for an injection that precedes the measurement of an air-to-fuel ratio value by the oxygen sensor time correction factor, the estimated fuel quantity being determined as a function of an air mass flow value and of the measured air-to-fuel ratio value; and correcting the operating set points of the internal combustion engine using the calculated fuel injection error quantity.
Abstract translation: 公开了一种校正内燃机的操作设定点的方法。 所述方法包括：预先确定表示在所述燃烧事件中产生的燃料喷射到所述发动机气缸内的燃料燃烧事件与所述排气管中的测量值之间的延迟的氧传感器时间校正因子; 计算燃料喷射误差量作为标称燃料量和喷射到气缸中的估计燃料量之间的差值，为通过氧传感器测量空气燃料比值之前的喷射确定的标称燃料量 时间校正因子，所估计的燃料量被确定为空气质量流量值和所测量的空气 - 燃料比值的函数; 以及使用所计算的燃料喷射误差量来校正所述内燃机的操作设定点。
-
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.
-
3.发明申请公开(公告)号：US20180328265A1
公开(公告)日：2018-11-15
申请号：US15595083
申请日：2017-05-15
Applicant: GM Global Technology Operations LLC
Inventor： Serena TORDIN , Fabrizio RAMOLIVO , Francesco CASTORINA
CPC classification number: F02B29/0493 , F02B29/0437 , F02M35/10157 , F02M35/10222 , F02M35/10268
Abstract: A system according to the present disclosure includes a coolant flow request module and a pump control module. The coolant flow request module is configured to determine a coolant flow request based on at least one of (i) an outlet temperature of a compressor disposed upstream of a heat exchanger of a charge air cooler, and (ii) an efficiency of a radiator of the charge air cooler. The pump control module is configured to control an output of a pump based on the coolant flow request. The pump circulates coolant through the radiator of the charge air cooler and through the heat exchanger of the charge air cooler when the pump is activated. The heat exchanger is disposed upstream of an intake manifold of an engine.
-
公开(公告)号：US20170152826A1
公开(公告)日：2017-06-01
申请号：US15366621
申请日：2016-12-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Paul Leonardo CLAUDE , Serena TORDIN
CPC classification number: F02M65/001 , F01N3/0814 , F01N3/106 , F01N3/2066 , F01N2560/025 , F02D41/0087 , F02D41/08 , F02D41/1456 , F02D41/22 , F02D41/221 , F02D41/3005 , F02D2200/0616 , Y02T10/40
Abstract: A method and apparatus is disclosed for testing a fuel injector of an internal combustion engine equipped with a plurality of fuel injectors to detect injector clogging. A test injector is switched off. A requested value of a fuel quantity to be injected by the other fuel injectors of the plurality of fuel injectors is adjusted to operate the internal combustion engine in idle mode. A value of an oxygen concentration in an exhaust gas is measured. A value of a fuel quantity that has been injected is estimated as a function of the measured value of the oxygen concentration. A fuel quantity drift of each fuel injector is calculated as a function of the requested values and the estimated values of the fuel quantity provided by the injector tests. Each fuel quantity drift is used to identify if the corresponding fuel injector is clogged.
-
-
-
Search Results
4
records
(took 0.012 seconds)
