Patent ID: 7908860

Claim:
An internal combustion engine having a first and a second cylinder bank disposed in a V-shape defining a valley between the first and second cylinder banks and a turbocharger system, the system comprising: a high pressure turbocharger disposed in the valley; a first low-pressure turbocharger disposed adjacent an outer side of the first cylinder bank opposite the valley; a second low-pressure turbocharger disposed adjacent an outer side of the second cylinder bank opposite the valley; an exhaust gas system comprising a first high pressure flow path connecting the first cylinder bank with the high pressure turbocharger, a second high pressure flow path connecting the second cylinder bank with the high pressure turbocharger, a first low pressure flow path connecting the high pressure turbocharger with the first low pressure turbocharger, a second low pressure flow path connecting the high pressure turbocharger with the second low pressure turbocharger, a first turbine bypass flow path connecting the first cylinder bank with the first low pressure turbocharger and including a first turbine bypass valve, and a second turbine bypass flow path connecting the second cylinder bank with the second low pressure turbocharger and including a second turbine bypass valve wherein the first and second turbine bypass flow paths bypass the high-pressure turbine; an intake air system comprising a first intake air flow path connecting the first low pressure turbocharger with the high pressure turbocharger, a second intake air flow path connecting the second low pressure turbocharger with the high pressure turbocharger, and a compressor bypass flow path including a compressor bypass valve; and a controller operative to control the positions of at least one of the first turbine bypass valve, the second turbine bypass valve, and the compressor bypass valve in response to at least one engine operating condition.