Air-flow speed detection system e.g. for four-cylinder spark-ignition, fuel -injected engine, includes pulsation cycle meter for measuring pulsation cycle for scanning cycle adjustment device

摘要

An air-flow measurement system for an engine (1) has an intake air meter for measuring the speed of flow (3) of intake-air, a pulsation gauge for measuring a pulsation cycle, and a scanning cycle adjustment device which adjusts a scanning cycle which is different to a given cycle, depending on the pulsation cycle, which is measured by the pulsation cycle meter.