METHOD AND DEVICE FOR ESTIMATING THE AIR THROUGHPUT OF A MOTOR VEHICLE ENGINE WITH EXHAUST GASOLINE

摘要

The system has a sensor (12) measuring the speed of rotation of a turbo compressor (4) of an engine (1) of a motor vehicle. A mapping (36) stores supply flow of fresh air of the engine based on operating parameters of the engine. The parameters have a function of speed of rotation of a turbo compressor. An updating module (35) updates the engine`s fresh air supply flow mapping, at regular intervals. The module controls the closing of a recirculation valve (21), during the updating of the mapping. The mapping allows to estimate the supply flow of the fresh air of the engine. An independent claim is also included for a method for estimating a supply flow of fresh air of an engine of a motor vehicle.