Fuel consumption measuring apparatus

In an electronic fuel injection control system for an internal combustion engine for controlling the ratio of an energized period and a deenergized period of an actuator which operates to open and close a fuel injection valve in response to a fuel injection pulse, which system includes a first means for determining a fuel injection amount based on intake air flow rate and other control parameters and generating a first signal having a signal value indicative of the determined fuel injection amount, a second means for correcting the value of said first signal fed from said first means and generating the fuel injection pulse having a pulse width corresponding to the corrected fuel injection amount and indicative of the ratio of an energized period and a deenergized period of the actuator of the fuel injection valve based on the corrected signal value,

• a fuel consumption measuring apparatus comprising in combination:
• a third means for receiving said first signal and adding the signal value of said first signal in synchronism with said fuel injection pulse, said third means comparing a sum of said signal value with a predetermined value and generating a counting pulse signal when said sum becomes equal to or more than the predetermined value;
• a fourth means for counting up said counting pulse signal, said fourth means generating a second signal indicative of consumed fuel amount, and said fourth means further generating a command signal to be fed to said third means and operate the third means for subtracting said predetermined value from the sum of the signal value;
• and
• a fifth means for receiving said second signal from said fourth means and calculating consumed fuel amount based on the counted up counting pulse signal, and displaying consumed fuel amount based on said second signal value.