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An engine system for a vehicle is provided, comprising an internal combustion engine including an exhaust system; a first turbine including a first wastegate and arranged along a first branch of the exhaust system, a second turbine including a second wastegate and arranged along a second branch of t

An engine system for a vehicle is provided, comprising an internal combustion engine including an exhaust system; a first turbine including a first wastegate and arranged along a first branch of the exhaust system, a second turbine including a second wastegate and arranged along a second branch of the exhaust system; a first exhaust gas sensor arranged along the first branch of the exhaust system downstream of the first turbine and first wastegate; a second exhaust gas sensor arranged along the second branch of the exhaust system downstream of the second turbine and the second wastegate; and a control system configured to command the first and second wastegates to a closed or open position and to indicate one of said wastegates as unresponsive to said command in response to a temperature difference between the first and second branches indicated by the first and second exhaust gas sensors.

대표청구항 ▼

The invention claimed is: 1. A method of operating an engine system including an engine having a first cylinder bank and a second cylinder bank operatively coupled to at least two turbochargers via a common intake manifold, the method comprising:during a first mode, varying an amount of fuel that is

The invention claimed is: 1. A method of operating an engine system including an engine having a first cylinder bank and a second cylinder bank operatively coupled to at least two turbochargers via a common intake manifold, the method comprising:during a first mode, varying an amount of fuel that is provided to the first cylinder bank responsive to feedback provided by a first exhaust gas sensor arranged along an exhaust passage of the first cylinder bank and varying an amount of fuel that is provided to the second cylinder bank responsive to feedback provided by a second exhaust gas sensor arranged along an exhaust passage of the second cylinder bank; andduring a second mode, the second mode being different from the first mode, adjusting an operating parameter of at least one of the turbochargers responsive to a comparison of a first temperature indication provided by the first exhaust gas sensor and a second temperature indication provided by the second exhaust gas sensor.