Patent ID: 9732714
Date: 2017-08-15
CPC Classifications: F02D,F02M,G01N

Claim:
1. A vehicle system, comprising: a fuel tank; a fuel-water separator in fluid communication with the fuel tank; a separator water sensor operably disposed in the fuel-water separator for detecting a presence of water in the fuel-water separator; an engine in fluid communication with the fuel-water separator; a purge tank in fluid communication with the fuel tank; a duct coupled between the fuel-water separator and the purge tank, the purge tank receiving liquid from the duct via an outlet at a bottom of the purge tank, the purge tank separate from the fuel tank; a fuel property sensor operably disposed in the purge tank for detecting a presence of water at a top of the purge tank; a purge line in fluid communication with the purge tank and the fuel tank for removing fuel from the purge tank; a fuel drain-back prevention valve in the purge line; and a controller in communication with the separator water sensor, the fuel property sensor, and the engine and configured to: wherein the fuel removed from the purge tank via the purge line is supplied to the fuel tank, the fuel property sensor operably disposed in the purge tank is a first fuel property sensor, and further comprising a second fuel property sensor operably disposed in the fuel tank and configured to detect a concentration of water mixed with the fuel in the fuel tank.