FUEL SYSTEMS AND METHODS FOR CONTROLLING FUEL SYSTEMS IN A VEHICLE WITH MULTIPLE FUEL TANKS
First Claim
1. A vehicle fuel system, the system comprising:
- a first fuel tank including a first pressure sensor;
a second fuel tank;
a fuel tank isolation valve positioned to selectively decouple the first fuel tank and the second fuel tank; and
an electronic controller configured to identify which of the first fuel tank and second fuel tank includes a fuel system leak by selectively decoupling the first fuel tank and the second fuel tank via the fuel tank isolation valve, responsive to an identification of the fuel system leak.
1 Assignment
0 Petitions
Accused Products
Abstract
Fuel systems and methods for controlling fuel systems in a vehicle with multiple fuel tanks are provided. An exemplary vehicle fuel system includes a first fuel tank including a first pressure sensor, and a second fuel tank. The system may further include a fuel tank isolation valve positioned to selectively decouple the first fuel tank and the second fuel tank. The system may further include an electronic controller configured to identify which of the first fuel tank and second fuel tank includes a fuel system leak by selectively decoupling the first fuel tank and the second fuel tank via the fuel tank isolation valve, responsive to an identification of the fuel system leak.
-
Citations
20 Claims
-
1. A vehicle fuel system, the system comprising:
-
a first fuel tank including a first pressure sensor; a second fuel tank; a fuel tank isolation valve positioned to selectively decouple the first fuel tank and the second fuel tank; and an electronic controller configured to identify which of the first fuel tank and second fuel tank includes a fuel system leak by selectively decoupling the first fuel tank and the second fuel tank via the fuel tank isolation valve, responsive to an identification of the fuel system leak. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for controlling a fuel system of a vehicle, the method including:
-
decoupling a first fuel tank including a first fuel type and a second fuel tank including a second fuel type, responsive to an identification of a fuel system leak; and identifying which of the first fuel tank and the second fuel tank includes the fuel system leak. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for controlling a fuel system of a vehicle comprising:
-
setting a first expected pressure signal based on one or more of a fuel type and a fuel quantity in the first fuel tank; setting a second expected pressure signal based on one or more of a fuel type and a fuel quantity in the second fuel tank, wherein fuel type is detectable by a fuel type sensor in a fuel reservoir located upstream of the first fuel tank and the second fuel tank; receiving a first pressure signal from a first pressure sensor in the first fuel tank, at an electronic controller; receiving a second pressure signal from a second pressure sensor in the second fuel tank at the electronic controller; identifying that the first fuel tank has a fuel system leak when a difference between the first pressure signal and a first expected pressure signal is above a first difference threshold; and identifying that the second fuel tank has a fuel system leak when a difference between the second pressure signal and a second expected pressure signal is above a second difference threshold.
-
Specification