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Combustion and thermal management strategies using variable valve timing

A technology of thermal management, thermal management system, applied in the field of internal combustion engine operation, which can solve the problems of expensive, expensive exhaust heater, high cost of exhaust throttle valve, etc.

Active Publication Date: 2022-04-26
CUMMINS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While turbochargers with variable geometry (VG) intake ports have been used to increase exhaust temperatures, VG turbochargers are more expensive than wastegate turbochargers
Exhaust heaters are also expensive and require a generator to generate energy to run the heater
Exhaust throttles are costly and have reliability issues

Method used

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  • Combustion and thermal management strategies using variable valve timing
  • Combustion and thermal management strategies using variable valve timing
  • Combustion and thermal management strategies using variable valve timing

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Embodiment Construction

[0015] In order to promote an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the accompanying drawings and a detailed description thereof will be given. It should be understood, however, that the scope of the present invention is not so limited and any alterations and further modifications of the illustrated embodiments and any further applications of the principles of the invention presented herein would normally occur to one skilled in the art to which the invention pertains are covered by this article.

[0016] refer to figure 1 , the system 10 includes a four-stroke internal combustion engine 12 . figure 1 An embodiment is shown in which the engine 12 is a diesel engine, but any engine type is contemplated, including compression ignition, spark ignition, and combinations of these. The engine 12 may include a plurality of cylinders 14 . figure 1 An arrangement of cylinders 14 including six cylinders in an in...

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Abstract

A system and method for thermal management of aftertreatment components is described. The disclosed method may employ any one or combination of operating modes to achieve exhaust gas target conditions to support or initiate thermal management of an aftertreatment device.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of the filing date of U.S. Provisional Application Serial No. 62 / 453,326, filed February 1, 2017, which is incorporated herein by reference. technical field [0003] The present disclosure relates generally to internal combustion engine operation, and more particularly, to systems and methods for combustion and thermal management of internal combustion engine operation. Background technique [0004] Thermal management of an internal combustion engine's aftertreatment system and / or intake air flow may provide operational benefits such as a more efficient combustion process and more efficient aftertreatment device operation. While turbochargers with variable geometry (VG) intake ports have been used to increase exhaust temperatures, VG turbochargers are more expensive than wastegate turbochargers. Exhaust heaters are also expensive and require a generator to generate energy to run the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D13/02F01L1/34F01L1/344F01L13/00F02D13/00
CPCF02D41/0245F02D41/401F02D13/0203F02D13/0249Y02T10/12Y02T10/40F02M26/33F01N9/00F02D41/0007F02D41/024
Inventor T.希普M.H.戴恩
Owner CUMMINS INC