Engine system

An engine system comprising:

• a first cylinder group and a second cylinder group which burn a supplied gas mixture and discharge an exhaust gas;
• a first high-pressure stage supercharger and a second high-pressure stage supercharger each having a high-pressure stage turbine driven by the exhaust gas of the corresponding cylinder group and a high-pressure stage compressor rotated by driving of the high-pressure stage turbine and configured to compress a gas supplied to the corresponding cylinder group;
• a first low-pressure stage supercharger having a first low-pressure stage turbine driven by an exhaust gas discharged from the high-pressure stage turbine of the first high-pressure stage supercharger and a first low-pressure stage compressor rotated by driving of the first low-pressure stage turbine and configured to compress a gas supplied to the high-pressure stage compressor of the second high-pressure stage supercharger;
• and
• a second low-pressure stage supercharger having a second low-pressure stage turbine driven by an exhaust gas discharged from the high-pressure stage turbine of the second high-pressure stage supercharger and a second low-pressure stage compressor rotated by driving of the second low-pressure stage turbine and configured to compress a gas supplied to the high-pressure stage compressor of the first high-pressure stage supercharger.