Engine system

An engine system comprising:

• an engine including a first cylinder bank and a second cylinder bank, each including a plurality of cylinders generating a driving torque by combustion of a fuel;
• a throttle valve provided at an intake manifold distributing an intake gas to the cylinders of the first cylinder bank and the second cylinder bank to control an intake amount of the intake gas;
• a first exhaust manifold gathering exhaust gas exhausted from the cylinders of the first cylinder bank to be supplied to a first exhaust line;
• a second exhaust manifold gathering the exhaust gas exhausted from the cylinders of the second cylinder bank to be supplied to a second exhaust line;
• a turbocharger including a turbine rotated by the exhaust gas exhausted through the first exhaust manifold and a compressor rotated in connection with the turbine to compress external air;
• a cylinder deactivation (CDA) device selectively deactivating the cylinders of the first cylinder bank;
• an electric supercharger including a motor to supply supercharged air to the cylinders of the first and second cylinder banks and an electric compressor operated by the motor,
• a first exhaust gas processing device mounted to the first exhaust line;
• a second exhaust gas processing device mounted to the second exhaust line;
• and
• a main exhaust gas processing device mounted to a main exhaust line in which the first exhaust line and the second exhaust line are joined,
• wherein the exhaust gas exhausted from the first exhaust manifold is directly exhausted to the turbine and exhaust gas exhausted from the second exhaust manifold is directly exhausted to the second exhaust gas processing device.