System, vehicle and method for lubricating a hydrogen injector in a vehicle

A vehicle comprising:

• a hydrogen combustion engine;
• an extraction and separation device configured to collect at least a fraction of an exhaust gas of the hydrogen combustion engine and separate a water component from the collected fraction of the exhaust gas to provide liquid water and dried exhaust gas;
• a reactor connected to the extraction and separation device and configured to generate nitric acid from the liquid water and a nitrogen oxide content of the dried exhaust gas;
• and
• a hydrogen injector connected to the hydrogen combustion engine and connected to the reactor and configured to receive the generated nitric acid for lubrication.

A method for lubricating a hydrogen injector in a vehicle, the method comprising:

• collecting a fraction of exhaust gas of a hydrogen combustion engine;
• extracting a water component from the collected fraction of the exhaust gas to provide liquid water and dried exhaust gas;
• generating, in a reactor, nitric acid from the dried exhaust gas and the liquid water;
• and
• introducing the generated nitric acid to the hydrogen injector.