Method for descaling a combustion engine by hydrogen injection and descaling station for implementing same

A method for cleaning a motor vehicle motorisation unit comprising an internal combustion engine, said method comprising:

• the reading by a diagnostic tool connected to the motor vehicle, of faults of the motorisation unit possibly highlighted by a control electronics system of the motorisation unit during the prior operation of the motorisation unit and stored, if necessary, in a memory of said control electronics system;
• the reading by the diagnostic tool in real time, engine turned on, of operating parameters of the motorisation unit, and the establishment of a diagnosis relating to the clogging of members of the motorisation unit according to the faults highlighted, if necessary, as well as said operating parameters of the motorisation unit;
• the connection to the vehicle of a cleaning station of the motorisation unit by injection of a cleaning fluid, said cleaning station being further connected;
• under the control of the diagnostic tool and according to a cleaning procedure which depends on the diagnostic established, cleaning of the motorisation unit by injection, engine turned on, of a cleaning fluid in the inlet of the engine by a cleaning station connected to the motor vehicle and connected to the diagnostic tool to the effects of its control by said diagnostic tool, with simultaneous movement, also under the control of the diagnostic tool, movable members of the motorisation unit comprised among the members of said motorisation unit which are sensitive to clogging;
• the removal by the diagnostic tool of the faults highlighted, if necessary, of the memory of the control electronics system of the motorisation unit;
• the learning, after the cleaning operation, by the diagnostic tool, in real time, engine turned on, of the effective state of self-adaptive members of the motorisation unit comprised among the members of said motorisation unit which are sensitive to clogging;
• and
• the updating by the diagnostic tool, in the control electronics system of the motorisation unit, of operating parameters of said motorisation unit normally impacted by the clogging of members of said motorisation unit which are sensitive to clogging, to take account of the effective state, after the cleaning operation, of the self-adaptive members of the motorisation unit among the members of said motorisation unit which are sensitive to clogging.