Multiple speed fuel pump control module
First Claim
1. A system for fuel delivery in an automotive vehicle, the system comprising;
- a fuel pump; and
an electrical control module in electrical communication with the fuel pump, the electric control module including a solid-state switch and a pulse width modulator, the solid-state switch being in electrical communication with the pulse width modulator and the fuel pump, the pulse width modulator further being configured to generate a drive signal according to a first discreet set point defining a first predetermined duty cycle for the drive signal if the electrical control module determines fuel consumption is above a fuel consumption threshold, and the pulse width modulator being configured to generate the drive signal according to a second discreet set point defining a second predetermined duty cycle for the drive signal if the electrical control module determines the fuel consumption is below the fuel consumption threshold.
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Accused Products
Abstract
A system for fuel delivery in an automotive vehicle is provided. The system includes a fuel pump and an electrical control module. The electrical control module receives a control signal from the engine control module indicating a desired fuel pump speed. The electrical control module includes a pulse width modulator and a solid-state switch configured to generate a fuel pump drive signal that varies in duty cycle based on the control signal. The drive signal is provided to the fuel pump effectively controlling the speed of operation of the fuel pump. Based on the speed of fuel pump operation, the fuel pump draws fuel from the fuel tank and provides it to the fuel rail for use in a combustion engine.
16 Citations
19 Claims
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1. A system for fuel delivery in an automotive vehicle, the system comprising;
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a fuel pump; and
an electrical control module in electrical communication with the fuel pump, the electric control module including a solid-state switch and a pulse width modulator, the solid-state switch being in electrical communication with the pulse width modulator and the fuel pump, the pulse width modulator further being configured to generate a drive signal according to a first discreet set point defining a first predetermined duty cycle for the drive signal if the electrical control module determines fuel consumption is above a fuel consumption threshold, and the pulse width modulator being configured to generate the drive signal according to a second discreet set point defining a second predetermined duty cycle for the drive signal if the electrical control module determines the fuel consumption is below the fuel consumption threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for fuel delivery in an automotive vehicle, the method comprising:
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receiving a control signal indicating a desired fuel pump speed;
generating a drive signal using a pulse width modulator to drive the fuel pump at the desired speed, the drive signal being based on a first discreet set point defining a first predetermined duty cycle of the drive signal if fuel consumption is above a fuel consumption threshold, the drive signal being based on a second discreet set point defining a second predetermined duty cycle of the drive signal if the fuel consumption is below the fuel consumption threshold. - View Dependent Claims (12, 13, 14, 15, 16, 19)
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- 17. The method according to claim 161 wherein engine commands include engine speed.
Specification