Patent ID: 6112765
Filing Date: 2000-09-05
Classification: F02D,F02M,F16K,Y02T,Y10T

Abstract:
An apparatus for determining whether a solenoid gaseous fuel admission valve is operating within predetermined performance related parameters when the valve is in a closed position, the valve having an electcally enerizable coil, at least one movable plate, and a second plate, the apparatus comprising:power means for supplying electrical energy to the coil for moving the at least one movable plate, whereby the valve forms a variable resistor having a resistance value, the resistance value varying as a function of the position of the at least one movable plate relative to said second plate and an amount of contanination between said at least one movable plate and said second plate when the valve is in a closed position;means for producing a signal indicative of the resistance value of the variable resistor based upon the position of said at least one movable plate relative to said second plate and the amount of contamination between said at least one movable plate and said second plate; anda data processing means operable to compare the resistance value to a benchmark resistance value and to output a signal to display means to indicate whether the resistance value is within a tolerance value.