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US 2016/0108798 A1Published application
Method and system for improving turbocharger efficiency
AssigneeFord Global Technologies, LLC
InventorBrad Alan VanDerWege
Life of this patent
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Abstract
Methods and systems are provided for enhancing turbocharger performance for a boosted engine system configured to operate with a pattern of deactivated cylinders. In one example, a method may include, in response to a demand for boost, operating with a cylinder pattern based on boost demand and turbocharger configuration. The specific pattern may depend on the pattern constraints imposed by engine load and NVH metrics.
Claims20
A method for a boosted engine system, comprising:
- in response to a boost demand,
- selectively deactivating a cylinder pattern of individual cylinder valve mechanisms;
- the cylinder pattern selected to direct exhaust from active cylinders into one scroll of a multi-scroll exhaust turbine.
A method for a boosted engine system, comprising:
- in response to boost demand,
- selectively deactivating individual cylinder valve mechanisms according to a cylinder pattern, the cylinder pattern selected to direct exhaust from active cylinders into one of a plurality of engine turbines.
A method, comprising:
- in response to a boost demand,
- selectively deactivating a cylinder pattern of individual cylinder mechanisms to direct exhaust from active cylinders into each of a first and second turbine.
Dependencies are inferred from the claim text.