A method and a device for monitoring the air / fuel mixture of air and vapor being fed from the outlet of a fuel vapor accumulator relationship.

摘要

A device for monitoring the fuel / air ratio of the mixture of air and vapor being fed from the outlet of a fuel vapor accumulator, wherein an accumulator (3) receives fuel vapor (3a) vapors fuel from a tank (7) and tá is- provided with an inlet (3b) air; feeding said accumulator (3) fuel in the outlet (34), a mixture of air and vapor fed (12) to a motor (13), igniting the means com- device (16) that electronically calculating cos they receive, at the input, at least corre- lated with information Qa intake air flow in said lator accumulated (3), the device being characterized in that said electronic calculation means calculate, on the basis of at least said flow rate Qa air, the percentage p of steam fed from the output rela- tion to the total of vapor and air aspirated into the accumulator; that said means (16) electronic calculating Nor WELL calculated flow Qa ° which would be fed deaire in said accumulator output (3) in the absence of vapor coming from said accumulator (3); calculating said percentage p of steam on the basis of said flow rate of air Qa and said flow air Qa °.