Abstract: A method for eliminating hydrocarbon vapors generated in a fuel tank of a vehicle powertrain including at least one heat engine, by a canister adapted to absorb the vapors. The method includes detecting movements of the hydrocarbon vapors from the tank to the canister, increasing a counter value when the vapors move from the tank to the canister, and calculating a number of gas volumes passing through the canister when the heat engine is started so as to reduce the value of the counter by purging the gasoline vapors in a direction of the engine.

Abstract: A method for eliminating hydrocarbon vapors generated in a fuel tank of a vehicle powertrain including at least one heat engine, by a canister adapted to absorb the vapors. The method includes detecting movements of the hydrocarbon vapors from the tank to the canister, increasing a counter value when the vapors move from the tank to the canister, and calculating a number of gas volumes passing through the canister when the heat engine is started so as to reduce the value of the counter by purging the gasoline vapors in a direction of the engine.

Abstract: A variable-throughput digital modulator receives at an input a transmission digital signal e(t). The transmission digital signal is time-based demultiplexed (1) into first and second elementary transmission signals e1(t) and e2(t) which are applied, respectively, to first (21) and second (22) filtering circuits for delivering first and second filtered elementary signals e1f(t) and e2f(t). A circuit (20) provides throughput switching control to the first and second filtering circuits (21, 22) for selecting a first or second filtering mode corresponding to a first throughput at a first type of modulation or a second throughput at a second type of modulation. A quadrature modulator (3) receives the first and second filtered elementary signals in order to modulate an RDS-compatible carrier f0, and an output filter circuit (5) delivers a filtered modulated carrier signal for broadcast, such as in supplementary data broadcasting in FM radio broadcasting.