Mixed fuel amount control system applying active purging
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsYoung-Kyu Oh, Keum-Jin Park
Life of this patent
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Abstract
A mixed fuel amount control system applying active purging includes: a fuel tank in which biofuel and fossil fuel are mixed and stored, an active purging device to supply an evaporated gas evaporated in the fuel tank to an intake pipe, and a concentration sensor to sense a mixing ratio of the biofuel stored in the fuel tank changes. In particular, the flow rate and the concentration of the evaporated gas of the fuel tank flowing into the intake pipe are changed according to a mixing ratio of biofuel and fossil fuel.
Claims9
A mixed fuel amount control system applying active purging, the mixed fuel amount control system comprising:
- a fuel tank in which first fuel and second fuel are mixed and stored;
- an active purging device configured to supply an evaporated gas evaporated in the fuel tank to an intake pipe;
- and
- a concentration sensor configured to sense a mixing ratio of the first fuel stored in the fuel tank,
- wherein a concentration and a flow rate of the evaporated gas supplied to the intake pipe are changed based on the mixing ratio sensed by the concentration sensor,
- wherein the active purging device comprises:
- a canister connected to the fuel tank and configured to absorb the evaporated gas;
- a purge line for connecting the fuel tank, the canister, and the intake pipe;
- a purge pump mounted on the purge line;
- a purge valve mounted on the purge line to be interposed between the purge pump and the intake pipe;
- a first pressure sensor mounted on the purge line to be interposed between the purge pump and the purge valve;
- and
- a second pressure sensor mounted on the purge line to be interposed between the canister and the purge pump, and
- wherein the concentration and the flow rate of the evaporated gas supplied to the intake pipe by the active purging device are changed by adjusting revolutions per minutes (RPM) of the purge pump and an opening amount of the purge valve.
Dependencies are inferred from the claim text.