Fuel system for a vehicle, a vehicle comprising such a fuel system and a method for supplying fuel to a combustion engine
AssigneeVolvo Car Corporation
InventorsKjell Fischer, Stella Johnsson, Joel Johansson, Christoffer Kallerman, Michael Zach
Life of this patent
Estimating the term…
Abstract
A fuel system for a vehicle, where the fuel system comprises a first fuel pump and a second fuel pump, and where the capacity of the first fuel pump is lower than the capacity of the second fuel pump. The advantage of the disclosure is that the supply of fuel to the combustion engine from the fuel system can be optimized with respect to energy usage.
Claims20
A fuel system for a vehicle, the fuel system comprising:
- a first fuel pump, a second fuel pump, a fuel tank and a first jet pump configured to transfer fuel from a second chamber of the fuel tank to a first chamber of the fuel tank, wherein a capacity of the first fuel pump is lower than a capacity of the second fuel pump, the second fuel pump is configured to be operated to transfer fuel from the second chamber to the first chamber in dependency of a signal from a fuel level sensor, and flow from the second fuel pump is usable to drive the first jet pump.
A method for supplying fuel to a combustion engine from a fuel system that includes a first fuel pump and a second fuel pump, wherein a capacity of the first fuel pump is lower than a capacity of the second fuel pump, the method comprising:
- starting the combustion engine;
- at a low fuel consumption, running the first fuel pump;
- at a medium fuel consumption higher than the low fuel consumption, running the second fuel pump with a controlled rotational speed;
- and
- at a high fuel consumption higher than the medium fuel consumption, running the second fuel pump at full rotational speed.
A non-transitory computer readable medium having stored computer executable instructions which, when executed in a fuel system for supplying fuel to a combustion engine, the fuel system including a first fuel pump and a second fuel pump, wherein a capacity of the first fuel pump is lower than a capacity of the second fuel pump, cause the fuel system to:
- at a first fuel consumption, run the first fuel pump;
- at a second fuel consumption higher than the first fuel consumption, run the second fuel pump with a rotational speed less than full rotational speed;
- and
- at a third fuel consumption higher than the second fuel consumption, run the second fuel pump at full rotational speed.
Dependencies are inferred from the claim text.