Ammonia generator, vehicle and method for generating ammonia

A motor vehicle comprising:

• an internal combustion engine and a SCR catalytic converter in an exhaust system of the internal combustion engine;
• an ammonia generator having devices for generating ammonia from an exhaust gas produced in a combustion process, the devices including a free-piston engine operated with fuel, wherein the ammonia is generated from exhaust gas of the free piston engine, and wherein the free-piston engine increases pressure of fuel being injected into the internal combustion engine.

An ammonia generator for a vehicle having an internal combustion engine and a SCR catalytic converter in an exhaust system of the internal combustion engine, comprising devices for generating ammonia from an exhaust gas produced in a combustion process, the devices including a free-piston engine operated with fuel, wherein the ammonia is generated from exhaust gas of the free piston engine, and wherein the free-piston engine increases pressure of fuel being injected into the internal combustion engine.

A method for generating ammonia from an exhaust gas of a combustion process, the method used in a vehicle having an internal combustion engine and an SCR catalytic converter in an exhaust system of the internal combustion engine, comprising the steps of:

• producing the exhaust gas in a combustion process in a free-piston engine operated with fuel;
• and
• increasing the pressure of a fuel injected into the internal combustion engine by means of the free-piston engine.