The regenerative cooling system (100) is provided for a regenerative heat engine (1) and comprises a cooling chamber (79) which surrounds a gas expander (78), leaving open a gas circulation space (80) between said chamber (79) and said expander (78), a working gas (81) expelled from the gas expander (78) circulating in said space (80) before returning to a regenerative heat exchanger (5) where it is cooled, a large portion of the heat of said gas (81) being reintroduced into the thermodynamic cycle of the regenerative heat engine (1).

The regenerative cooling system (100) is provided for a regenerative heat engine (1) and comprises a cooling chamber (79) which surrounds a gas expander (78), leaving open a gas circulation space (80) between said chamber (79) and said expander (78), a working gas (81) expelled from the gas expander (78) circulating in said space (80) before returning to a regenerative heat exchanger (5) where it is cooled, a large portion of the heat of said gas (81) being reintroduced into the thermodynamic cycle of the regenerative heat engine (1).

A method for regulation of a concentration/fraction of one or several substances in an exhaust stream in a motor vehicle through control of its driveline. The motor vehicle includes a driveline comprising a combustion engine; a driveline comprising a combustion engine connected to a gearbox, and an exhaust system for removal of an exhaust stream from the engine. The method includes the step: controlling the driveline for activation or deactivation of coasting of the vehicle based on one or several first parameters P.sub.1 for the regulation of a concentration/fraction C.sub.EXIX.sub.EX of one or several substances T.sub.EX in the exhaust stream, where at least one of the or several first parameters P.sub.1 are a first concentration/fraction difference between the first concentration/fraction C.sub.1/X.sub.1 in the exhaust stream and a reference concentration/fraction C.sub.RefIX.sub.Ref. Further, a computer program, a computer program product, a system and a motor vehicle such a system are disclosed.

A method for regulation of a concentration/fraction of one or several substances in an exhaust stream in a motor vehicle through control of its driveline. The motor vehicle includes a driveline comprising a combustion engine; a driveline comprising a combustion engine connected to a gearbox, and an exhaust system for removal of an exhaust stream from the engine. The method includes the step: controlling the driveline for activation or deactivation of coasting of the vehicle based on one or several first parameters P.sub.1 for the regulation of a concentration/fraction C.sub.EXIX.sub.EX of one or several substances T.sub.EX in the exhaust stream, where at least one of the or several first parameters P.sub.1 are a first concentration/fraction difference between the first concentration/fraction C.sub.1/X.sub.1 in the exhaust stream and a reference concentration/fraction C.sub.RefIX.sub.Ref. Further, a computer program, a computer program product, a system and a motor vehicle such a system are disclosed.

An internal combustion engine having an independent combustion chamber comprises a combustion chamber (1), an air inlet system (2), a material feeding system (3), and a working system (4). The air inlet system (2) and the combustion chamber (1) are connected together and configured to transport a compressed air to the combustion chamber (1). The material feeding system (3) and the combustion chamber (1) are connected together and configured to transport a fuel to the combustion chamber (1). The combustion chamber (1) has a fixed volume and has no movable wall such as a piston. The fuel continues to be burned in the combustion chamber (1) to generate a high-temperature and high-pressure gas, and chemical energy of the fuel is converted into internal energy of the high-temperature and high-pressure gas. The working system (4) and the combustion chamber (1) are connected together. The piston (21) of the working system (4) works to convert the internal energy of the gas into a mechanical energy.

An internal combustion engine having an independent combustion chamber comprises a combustion chamber (1), an air inlet system (2), a material feeding system (3), and a working system (4). The air inlet system (2) and the combustion chamber (1) are connected together and configured to transport a compressed air to the combustion chamber (1). The material feeding system (3) and the combustion chamber (1) are connected together and configured to transport a fuel to the combustion chamber (1). The combustion chamber (1) has a fixed volume and has no movable wall such as a piston. The fuel continues to be burned in the combustion chamber (1) to generate a high-temperature and high-pressure gas, and chemical energy of the fuel is converted into internal energy of the high-temperature and high-pressure gas. The working system (4) and the combustion chamber (1) are connected together. The piston (21) of the working system (4) works to convert the internal energy of the gas into a mechanical energy.

To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion.

To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion.

To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion.

To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion.