METHOD AND SYSTEM FOR IMPROVING TURBOCHARGER EFFICIENCY
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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.
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Citations
20 Claims
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1-9. -9. (canceled)
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10. 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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. 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. - View Dependent Claims (19, 20)
Specification