Drive of a pump

Patent metadata

Field	Value
Publication number	US-11085409-B2
Application number	US-201816630245-A
Country	US
Kind code	B2
Filing date	Jun 13, 2018
Priority date	Jul 11, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A pump includes a cylinder having a working chamber which contains a fluid. A drive system including at least two linear motors which are connected electrically and/or mechanically in parallel moves a piston in the working chamber to bound the working chamber in the cylinder and to pressurize the fluid in the working chamber. A piston rod is connected to the piston and bundles a force applied by the drive system.

First claim

The invention claimed is:

1. A pump, in particular a fuel pump, comprising:
a cylinder having a working chamber which contains a fluid, in particular fuel;
a drive system including at least two linear motors which are connected electrically and/or mechanically in parallel;
a piston movable in the working chamber by the drive system to bound the working chamber in the cylinder and to pressurize the fluid in the working chamber; and
a piston rod connected to the piston and bundling a force, in particular feed force, applied by the drive system.

2. The pump of claim 1 , wherein the drive system includes a measuring system configured to determine a position and/or speed of the linear motors, a control unit for activating the linear motors, and a system linked to the measuring system and control unit for data transmission between the control unit and the measuring system.

3. The pump of claim 1 , wherein the linear motors are arranged in parallel on a support.

4. The pump of claim 1 , wherein each of the linear motors is embodied as a linear motor with a moving magnet.

5. The pump of claim 1 , further comprising converters operably connected to the linear motors in one-to-one correspondence.

6. The pump of claim 1 , wherein the drive system includes at least 20 of said linear motors and at most 128 of said linear motors.

7. The pump of claim 1 , wherein the linear motors are of a same construction.

Assignees

• Siemens Ag

Inventors

• Diaz Diaz Ignacio
• Knorr Markus

Classifications

• F04B49/06

  Control using electricity (regulating by means of floats actuating electric switches F04B49/04) · CPC title

• F04B17/03

  driven by electric motors · CPC title

• F02M39/02

  Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives · CPC title

• F02B75/04

  Engines with variable distances between pistons at top dead-centre positions and cylinder heads · CPC title

• F04B17/044

  using solenoids directly actuating the piston · CPC title