Electrical monitoring of gaseous fuel admission valves

An internal combustion engine, comprising:

• a gaseous fuel system;
• a plurality of cylinders to receive gaseous fuel from the gaseous fuel system;
• a plurality of gaseous fuel admission valves, each gaseous fuel admission valve of the plurality of gaseous fuel admission valves being associated with a cylinder of the plurality of cylinders, each gaseous fuel admission valve fluidly connecting the gaseous fuel system with a respective cylinder of the plurality of cylinders;
• at least one sensor configured to measure an electrical operation parameter of each gaseous fuel admission valve of the plurality of gaseous fuel admission valves;
• and
• a control unit configured to receive the electrical operation parameter for each gaseous fuel admission valve from the at least one sensor, the electrical operation parameter being associated with an actuation of a respective gaseous fuel admission valve of the plurality of gaseous fuel valves, and the control unit is further configured to perform a method including:
• operating the internal combustion engine on gaseous fuel by repeatedly actuating the gaseous fuel admission valve and combusting the gaseous fuel in at least one cylinder of the plurality of cylinders;
• measuring, using the at least one sensor, a plurality of temporal developments of the electrical operation parameter respectively associated with an actuation of each gaseous fuel admission valve, the temporal developments including a first temporal development to be evaluated and a plurality of preceding temporal developments preceding the first temporal development;
• determining an operating condition of the gaseous fuel admission valve based on a comparison of the first temporal development and at least one preceding temporal development of the plurality of preceding temporal developments;
• and
• adjusting a supply of the gaseous fuel to the at least one cylinder based on the determined operating condition,
• each temporal development of the plurality of temporal developments including at least one of
• an opening section, in which the gaseous fuel admission valve is moving open by energizing the gaseous fuel admission valve, and
• a closing section, in which the gaseous fuel admission valve is moving closed by deenergizing the gaseous fuel admission valve.