Claims:1. A method to detect clogging in a fuel filter (102) of a vehicle, said vehicle further comprising an electric feed pump (101) , a high pressure fuel pump (103) , a common rail (104) and at least an Electronic Control Units (ECU (105)s), the method steps comprising: calculating a value of electric power consumed by the electric feed pump (101); measuring rail pressure deviation in the common rail (104); characterized in that method:
Calculating a value of hydraulic power based on rail pressure deviation and a flow rate requirement of the high pressure fuel pump (103);
Calculating a ratio between the electric power consumed by the electric feed pump (101) and the hydraulic power;
indicating a user of vehicle the clogging of the fuel filter (102) based on the measured ratio.
2. The method to detect clogging in a fuel filter (102) of a vehicle as claimed in claim 1, where the flow rate requirement of the high pressure fuel pump (103) is a predefined value calculated for steady state condition of the high pressure fuel pump (103).
3. The method to detect clogging in a fuel filter (102) of a vehicle as claimed in claim 1, where indicating the user of vehicle the clogging of the fuel filter (102) is done through audio and visual means.
4. An Electronic Control Unit (ECU (105)) adapted to detect clogging in a fuel filter (102) of a vehicle, the ECU (105) configured to :
Calculate a value of electric power consumed by an electric feed pump (101) of the vehicle;
measure a rail pressure deviation in common rail (104) of the vehicle;
calculate a value of hydraulic power based on rail pressure deviation and the a flow rate requirement of the high pressure fuel pump (103);
calculate a ratio between the electric power consumed by the electric feed pump (101) and the hydraulic power;
indicate a user of vehicle the clogging of the fuel filter (102) based on the measured ratio.
5. The Electronic Control Units (ECU (105)) adapted to detect clogging in a fuel filter (102) of a vehicle as claimed in claim 5, where the flow rate requirement of the high pressure fuel pump (103) is a predefined value calculated for steady state condition of the high pressure fuel pump (103).
6. The Electronic Control Units (ECU (105)) adapted to detect clogging in a fuel filter (102) of a vehicle as claimed in claim 5, where indicating the user of vehicle the clogging of the fuel filter (102) is done through audio and visual means.

, Description:The present disclosure proposes a method of detecting a degree of filter clogging in an internal combustion engine using an Electronic control unit (ECU (105)). In step 201, the ECU (105) receives a measured values of a set of parameters. In step 202, the ECU (105) stores a matrix comprising a correlation factor between each of the set of parameters and value of differential pressure. In step 203, the ECU (105) calculates a predicted value of differential pressure based on the measured values of the set of parameters and the matrix. In step 204, the ECU (105) linearizes the predicted value of differential pressure with a dynamic value of actual differential pressure. The dynamic value of actual differential pressure is derived from a self-learning algorithm using the actual value of differential pressure measured at various instances. In step 205, the ECU (105) indicates the value of degree of filter clogging to the vehicle user.