Compact turbocharged cylinder deactivation engine

An automotive vehicle engine comprising:

• a frame having multiple cylinders;
• intake and exhaust valves operable to control the admission of charge air to and the discharge of exhaust gas from the cylinders;
• a turbocharger having a compressor for supplying charge air and a turbine adapted to be driven by exhaust gas for driving the compressor to selectively pressurize the charge air;
• an intake manifold connecting the compressor with intake passages supplying air to the intake valves;
• an exhaust manifold connecting the exhaust valves with the turbine for driving the compressor;
• and
• valve gear operable to provide normal actuation of all the engine valves and to selectively deactivate the engine valves of at least some of the engine cylinders, the valves of deactivated cylinders being closed during deactivation to cut off air and exhaust gas flow through the deactivated cylinders;
• wherein the turbine has a divided housing with separate passages for conveying exhaust gas to the turbine and the exhaust manifold has separate outlets connected with the separate turbine housing passages, at least one of the manifold outlets being connected with a first group of cylinders that can be deactivated and another of the manifold outlets being connected with a second group of cylinders that can remain operative when the first group is deactivated.