Cleaning system for a vehicle component

Patent metadata

Field	Value
Publication number	US-11525423-B2
Application number	US-201916676497-A
Country	US
Kind code	B2
Filing date	Nov 7, 2019
Priority date	Nov 8, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A cleaning system for removal of contaminants from a surface of a vehicle component exposed to a gas or fluid flow, the cleaning system comprising: an excitation device adapted to be attached to the vehicle component in the vicinity of the surface exposed to contaminants, wherein the excitation device is configured to cause the surface to mechanically vibrate by transferring a vibrational excitation to the surface; wherein the frequency of the vibrational excitation is controllable to be based on the configuration of the vehicle component as well as other modelled/measured parameters.

First claim

The invention claimed is:

1. A cleaning system for removal of contaminants from a surface of a lambda probe, temperature probe, or heat exchanger exposed to a gas or fluid flow, the cleaning system comprising:
an excitation device adapted to be attached to the vehicle component in the vicinity of the surface exposed to contaminants, wherein the excitation device is configured to cause the surface to mechanically vibrate by transferring a vibrational excitation to the surface, wherein the excitation device is arrangeable isolated from the gas or fluid flow;
wherein the frequency of the vibrational excitation is controllable to be based on the configuration of the vehicle component, wherein the frequency of the vibrational excitation is swept through a frequency range comprising a natural frequency of the lambda probe, temperature probe, or heat exchanger.

2. The cleaning system according to claim 1 , comprising a control unit configured to control the frequency of the vibrational excitation.

3. The cleaning system according to claim 2 , wherein the control unit is configured to sweep the frequency of the vibrational excitation through the frequency range comprising the natural frequency of the lambda probe, temperature probe, or heat exchanger.

4. The cleaning system according to claim 1 , wherein the excitation device comprises a rotating unbalance device.

5. The cleaning system according to claim 4 , wherein the rotating unbalance device comprises an electric motor, wherein the electric motor is configured to cause a rotation member to rotate about an axis of rotation, wherein the axis of rotation is off-center from the center of mass of the rotation member.

6. The cleaning system according to claim 1 , wherein the excitation device comprises an ultra-sound generator.

7. The cleaning system according to claim 1 , wherein the excitation device comprises a piezoelectric component or a vibrational solenoid, and a power source configured to provide an excitation voltage signal to the piezoelectric component or the vibrational solenoid to cause the piezoelectric component or the vibrational solenoid to vibrate.

8. The cleaning system according to claim 1 , wherein the excitation device comprises a linear resonant actuator.

9. The cleaning system according to claim 1 , wherein the excitation device is an add-on device adapted to be retrofitted on pre-mounted vehicle components.

10. The cleaning system according to claim 1 , wherein the excitation device is comprised of an active damper for mechanically damping a power train of the vehicle.

11. The cleaning system according to claim 2 , wherein the control unit is configured to:
receive an event signal indicative of internal or external vehicle events, and
trigger the excitation device to provide the vibrational excitation in response to receiving the event signal.

12. The cleaning system according to claim 2 , wherein the control unit is configured to detect that the vehicle component is contaminated, wherein the control unit is configured to cause the excitation device to provide the vibrational excitation until a pre-determined cleansing level is reached.

Assignees

• Volvo Car Corp

Inventors

• Orbay Raik

Classifications

• F01N2290/06

  driven by auxiliary drive · CPC title

• F02D41/22

  Safety or indicating devices for abnormal conditions {(in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809)} · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• F01N2560/025

  for measuring or detecting O2, e.g. lambda sensors · CPC title

• F01N11/00

  Monitoring or diagnostic devices for exhaust-gas treatment apparatus · CPC title