System for priming a diesel fuel system
AssigneeFord Global Technologies, LLC
InventorDerek Albert Channing
Life of this patent
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Abstract
An apparatus for priming a diesel fuel system includes a diesel engine having a plurality of injectors. The injectors receive a supply of diesel fuel from a fuel injection pump. A fuel feed pump supplies diesel fuel to the fuel injection pump. A controller energizes said fuel feed pump during an initial operating time period. The controller then de-energizes said fuel pump during a second operating time period to prevent heat build up, noise, and battery drain. The controller then energizes said fuel feed pump during a priming time period, allowing the diesel fuel system to be primed with diesel fuel. The controller then de-energizes said fuel pump after said priming time period to prevent heat build up, noise, and battery drain.
Claims20
An apparatus for priming a diesel fuel system, said diesel fuel system comprising a diesel engine having a plurality of injectors, said injectors receiving a supply of diesel fuel from a fuel injection pump, said supply of diesel fuel stored in a fuel tank coupled to said fuel injection pump through a fuel line, said apparatus for priming comprising:
- a fuel feed pump coupled in said fuel line between said fuel tank and said fuel injection pump, said fuel feed pump supplying said diesel fuel to said fuel injection pump;
- and
- a controller coupled to said electric fuel feed pump, said controller having control logic operative to calibrate a length of an initial operating time period such that said fuel feed pump obtains a desired pressure, energize said fuel feed pump during said initial operating time period, calibrate a length of a second operating time period such that heat is minimized, de-energize said fuel pump during said second operating time period, energize said fuel feed pump during a priming time period, whereby said diesel fuel system is primed with diesel fuel, and de-energize said fuel pump after said priming time period.
A system for priming a diesel fuel system, comprising:
- a vehicle;
- a fuel tank located in said vehicle;
- a diesel engine located in said vehicle, said diesel engine having a plurality of injectors, said injectors receiving a supply of diesel fuel from a fuel injection pump, said supply of diesel fuel stored in said fuel tank coupled to said fuel injection pump through a fuel line;
- a fuel feed pump coupled in said fuel line between said fuel tank and said fuel injection pump, said fuel feed pump supplying said diesel fuel to said fuel injection pump;
- and
- a controller coupled to said electric fuel feed pump, said controller having control logic operative to calibrate a length of an initial operating time period such that said fuel feed pump obtains a desired pressure, energize said fuel feed pump during said initial operating time period, calibrate a length of a second operating time period such that heat is minimized, de-energize said fuel pump during said second operating time period, energize said fuel feed pump during a priming time period, whereby said diesel fuel system is primed with diesel fuel, and de-energize said fuel pump after said priming time period.
A method for priming a diesel fuel system, comprising the steps of:
- calibrating length of an initial operating time period such that a fuel feed pump obtains a desired pressure;
- energizing said fuel feed pump during said initial operating time period in response to a key-on event;
- calibrating length of a second operating time period such that heat is minimized;
- de-energizing said fuel feed pump during said second operating time period;
- energizing said fuel feed pump during a priming time period, whereby said diesel fuel system is primed with diesel fuel;
- and
- de-energizing said fuel feed pump after said priming time period.
Dependencies are inferred from the claim text.