Patent ID: 9702313
Date: 2017-07-11
CPC Classifications: F02D

Claim:
1. An engine control system comprising: a plurality (N) of pins, each respective pin of the N pins configured to couple to an injector; a plurality of measurement circuits comprising a different individual measurement circuit coupled to each respective pin of the N pins, each individual measurement circuit configured to provide a respective output corresponding to a voltage developed at the respective pin coupled to the individual measurement circuit; a plurality of subtraction circuits, each subtraction circuit of the plurality of subtraction circuits having a respective pair of inputs and configured to provide an output corresponding to a difference between respective input values that appear at the pair of inputs of the subtraction circuit; a plurality of cross-point switches coupled to the plurality of measurement circuits and the plurality of subtraction circuits; and a control block configured to determine a voltage difference between any two pins of the N pins by operating the cross-point switch to selectively couple the respective output of each of the two individual measurement circuits coupled to the any two pins, to a corresponding respective input of the pair of inputs of any one of the plurality of subtraction circuits.