Back to results
US 2015/0307075 A1Published application
Systems and methods for supplying gaseous fuel to an engine
AssigneeFord Global Technologies, LLC
InventorThomas G. Leone
Life of this patent
Estimating the term…
Abstract
Systems and methods for supplying gaseous fuel to an internal combustion engine are presented. In one example, a gaseous fuel pump is selectively activated to extend a vehicle's operating range. The methods and systems may be useful for operating an engine that includes directly injected gaseous fuel.
Claims20
An engine operating method, comprising:
- directly injecting a gaseous fuel to an engine in response to a pressure of a gaseous fuel stored in a fuel tank exceeding a threshold pressure;
- and
- activating a gaseous fuel pump only when the pressure of gaseous fuel stored in the fuel tank is less than or equal to the threshold level.
An engine operating method, comprising:
- directly injecting a gaseous fuel to an engine in response to a pressure of a gaseous fuel stored in a fuel tank exceeding a threshold pressure;
- and
- activating a gaseous fuel pump, adjusting torque converter clutch locking, and adjusting a transmission gear shift schedule in response to the pressure of the gaseous fuel stored in the fuel tank being less than or equal to the threshold pressure.
A vehicle system, comprising:
- an engine;
- a gaseous fuel tank;
- a gaseous fuel pump in pneumatic communication with the gaseous fuel tank;
- and
- a controller including non-transitory instructions for supplying gaseous fuel to the engine and activating the gaseous fuel pump only when a pressure in the gaseous fuel tank is less than a threshold pressure.
2 more elements
Dependencies are inferred from the claim text.