Abstract:

The problems of the automotive electronic fuel meter under different work situations are analyzed and studied. Under the situations of voltage disturbance, continuous ignition,signal mutations,specific response, the indicators of accurate sampling and smooth direction are realized.With the usage of such techniques as time-division sampling, auto-correction, threshold memory,first-order filter, and pointer response control,accurate sampling and smooth directions are achieved in case of the voltage disturbance, continuous ignition, signal mutations and the target response time on specific conditions. Both the accuracy and stability are taken into account. The realized product performance and the application results are in accordance with standard requirements for automotive

Key words: electronic fuel meter, signal sampling, auto-correction, threshold memory, first-order filter