公开(公告)号：EP3334909A1

公开(公告)日：2018-06-20

申请号：EP16835931.3

申请日：2016-08-11

申请人： Cummins, Inc.

发明人： SAAD, Philipe, F. ,  LYFORD-PIKE, Edward, J. ,  VISARIA, Milan, K. ,  TURLABATI, Agneya ,  BJATTACHARYYA, Anamitra ,  GRIFFIN, Jason, R. ,  NORTON, Brendan, C.

IPC分类号： F01L1/34 ,  F01L1/344 ,  F01L1/46 ,  F02D13/02 ,  G06F12/00 ,  G06F13/00

CPC分类号： F01L1/344 ,  F01L1/026 ,  F01L1/146 ,  F01L2001/054 ,  F01L2001/34486 ,  F01L2250/04 ,  F01L2820/041 ,  F02B29/0412 ,  F02D13/02 ,  F02D13/0219 ,  F02D19/02 ,  G06F13/00 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/32

摘要： A spark-ignited gas engine system comprises a combustion chamber defined by a piston, a head with a spark plug mechanism, and a cylinder having an associated intake valve and an associated exhaust valve, into which a mixture of combustible gas and air is entered via an intake manifold of the engine to drive a crankshaft. The system further comprises at least one turbocharger to compress the mixture. The system further comprises at least one camshaft, driven by the crankshaft via a gear assembly connected to the crankshaft, that comprises at least one cam that actuates the intake valve and the exhaust valve, at least one camphaser, coupled to the crankshaft via the gear assembly, and a controller to adjust a cam angle operation of the intake valve and the exhaust valve by adjusting the camphaser to a desired phase position to meet a target rotational phase of the camshaft.

公开(公告)号：EP3411574A1

公开(公告)日：2018-12-12

申请号：EP16889605.8

申请日：2016-02-04

申请人： Cummins, Inc.

发明人： TURLAPATI, Agneya ,  BREMMER, Robin, J. ,  SAAD, Philipe, F.

IPC分类号： F02D19/10

CPC分类号： F02D41/0027 ,  F02D19/0636 ,  F02D19/0642 ,  F02D35/023 ,  F02D35/028 ,  F02D41/0025 ,  F02D41/1452 ,  F02D2200/0612 ,  Y02T10/36

摘要： A system and method for self-adjusting engine performance parameters in response to fuel quality variations that includes an exhaust sensor for measuring a level of carbon dioxide present in an exhaust manifold, at least one of a knock sensor and a cylinder pressure transducer for determining a location of peak pressure and a centroid, respectively, a controller in communication with the exhaust sensor and the at least one of the knock sensor and the cylinder pressure transducer, the controller correlating a methane number of the fuel used by the engine to a brake specific carbon dioxide value calculated using the level of carbon dioxide measured by the exhaust sensor and the at least one of the centroid and the location of peak pressure, and an adjusting mechanism, wherein the adjusting mechanism adjusts an engine performance parameter based on the determined methane number.