METHODS FOR TURBOCHARGED ENGINE WITH CYLINDER DEACTIVATION AND VARIABLE VALVE TIMING
A system and methods are described for a turbocharged engine, comprising powering the engine using a first operating cylinder, supplementing the power using a second switchable cylinder, deactivating the second switchable cylinder responsive to a load below a first threshold, and closing a first shu...
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Main Authors | , , , , , , , , , , , |
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Format | Patent |
Language | English |
Published |
14.10.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A system and methods are described for a turbocharged engine, comprising powering the engine using a first operating cylinder, supplementing the power using a second switchable cylinder, deactivating the second switchable cylinder responsive to a load below a first threshold, and closing a first shut-off element downstream of a compressor during the partial deactivation to prevent a first turbocharger from imparting a delivery action into a second compressor during the partial deactivation. Embodiments are further described wherein a bypass line in a second exhaust line further serves as a short-circuit line to prevent the second compressor from imparting a delivery action against the closed first shut-off element. A variable valve timing is then included to further optimize the combustion process during the partial deactivation. |
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Bibliography: | Application Number: CN201510158995 |