Internal-combustion engine e.g. petrol engine for driving hydrid vehicle, has exhaust valves fixed to exhaust gas pipes, and hot exhaust gas stands that are provided under pressure in one of gas pipes higher pressure in other gas pipe

摘要

The engine has cylinders, and two exhaust valves that are provided for each cylinder. The valves are fixed to exhaust gas pipes, where one of the exhaust gas pipes is connected with an expansion turbine of an exhaust-gas turbocharger. An energy surplus developed at the expansion turbine of the exhaust-gas turbocharger is transferred mechanically or pneumatically to a main crankshaft. Hot exhaust gas stands are provided under pressure in one of the exhaust gas pipes higher than pressure in the other exhaust gas pipe. Independent claims are also included for the following: (1) a method for regulating an internal-combustion engine (2) a method for heating an internal-combustion engine.