US 11,326,590 B2 · Method and apparatus for controlling a variable displacement pump

Abstract

A variable displacement pump for supplying fluid to a system is described. Controlling the variable displacement pump is determined based upon inputs from a fluidic pressure sensor and an accelerometer, and includes determining a desired fluidic pressure and monitoring, via the fluidic pressure sensor, an actual fluidic pressure. A pressure error term is determined based upon a difference between the actual fluidic pressure and the desired fluidic pressure. A time-integrated pressure error term is determined based upon the pressure error term, and a g-force is determined based upon an input signal from the accelerometer. The variable displacement pump is controlled in response to the time-integrated pressure error term when the g-force is greater than a threshold g-force.

Claims19

Dependent claims

An internal combustion engine, comprising:

a variable displacement pump, a fluidic pressure sensor, an accelerometer, and a controller;
wherein the controller is operatively connected to the variable displacement pump, and is in communication with the fluidic pressure sensor and the accelerometer;
and
wherein the controller includes an instruction set, the instruction set being executable to:
determine a desired fluidic pressure;
monitor, via the fluidic pressure sensor, an actual fluidic pressure;
determine a pressure error term based upon a difference between the actual fluidic pressure and the desired fluidic pressure;
determine a time-integrated pressure error term based upon the pressure error term;
determine a g-force based upon an input signal from the accelerometer;
and
control the variable displacement pump responsive to the time-integrated pressure error term when the g-force is greater than a threshold g-force.

8 more elements

A method for controlling a variable displacement pump arranged to supply fluid to an internal combustion engine, the method comprising:

determining a desired fluidic pressure;
monitoring, via a fluidic pressure sensor, an actual fluidic pressure;
determining a pressure error term based upon a difference between the actual fluidic pressure and the desired fluidic pressure;
determining a time-integrated pressure error term based upon the pressure error term;
determining a g-force based upon an input signal from an accelerometer;
and
controlling the variable displacement pump responsive to the time-integrated pressure error term when the g-force is greater than a threshold g-force.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for controlling a variable displacement pump

Life of this patent

Method and apparatus for controlling a variable displacement pump

Life of this patent

Abstract

Claims19