Patent ID: 9255515
Filing Date: 2016-02-09
CPC Classification: F01N,F02D,Y02T

Claim Text:
1. A method for determining if an injector ( 10 ) is blocked, said injector ( 10 ) comprising an electromagnetic solenoid ( 20 ) with a coil having a resistance (R) and an inductance (L), passed through by a power supply current of maximum intensity (I max ) and powered by a power supply voltage (E), a closure and an opening of the injector ( 10 ) being controlled by a control device (D′), said control device (D′) comprising a microcontroller ( 80 ), and a measurement resistance (r), said method comprising the following steps: Step 1: Controlling the opening of the injector ( Step 2: Measuring by the microcontroller ( Step 3: Determining a necessary duration (τ, τ Step 4: Computing the inductance (L) of the coil of the solenoid ( Step 5: Comparing the value of the inductance (L) thus computed to a threshold value of the inductance (Lth), Step 6: If the value of the inductance (L) is greater than or equal to the threshold value (Lth), then blocking the injector ( Step 7: If the value of the inductance (L) is less than the threshold value (Lth), blocking the injector (