Secondary air pump assembly

Patent metadata

Field	Value
Publication number	US-9810128-B2
Application number	US-201514822468-A
Country	US
Kind code	B2
Filing date	Aug 10, 2015
Priority date	Aug 10, 2015
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A secondary air pump assembly for a vehicle includes a housing having an air inlet and an air outlet, a pump disposed within the housing, a position assembly and a valve assembly. The position assembly is disposed within the housing and configured to monitor a speed of the pump. The valve assembly is configured to facilitate preventing a backflow of air into the housing. A secondary air system including the secondary air pump assembly is also provided.

First claim

What is claimed is:

1. A secondary air pump assembly for a vehicle, the assembly comprising:
a housing having an air inlet and an air outlet;
a pump disposed within the housing;
a position assembly disposed within the housing and configured to monitor a speed of the pump, the position assembly comprising a hall-effect sensor and a target wheel having at least one permanent magnet; and
a valve assembly disposed within the housing and configured to facilitate preventing a backflow of air into the housing.

2. The secondary air pump assembly of claim 1 , wherein the pump is a positive displacement pump.

3. The secondary air pump assembly of claim 2 , further comprising a motor assembly operably associated with the positive displacement pump, wherein the motor assembly is disposed within the housing and comprises a motor and a shaft.

4. The secondary air pump assembly of claim 1 , wherein the valve assembly comprises a check valve disposed in the air outlet of the housing.

5. A secondary air system for a vehicle, the system comprising:
an exhaust manifold configured to be coupled to an engine;
an exhaust gas conduit coupled to the exhaust manifold;
an air intake conduit configured to supply intake air to the engine;
a secondary air intake conduit coupled to the air intake conduit; and
a secondary air pump assembly fluidly coupled to the secondary air intake conduit, the secondary air pump assembly comprising:
a housing having an air inlet and an air outlet;
a pump disposed within the housing;
a position assembly disposed within the housing and configured to monitor a speed of the pump, the position assembly comprising a hall-effect sensor and a target wheel having at least one permanent magnet; and
a valve assembly disposed within the housing and configured to facilitate preventing a backflow into the housing.

6. The secondary air system of claim 5 , wherein the pump is a positive displacement pump.

7. The secondary air system of claim 6 , further comprising a motor assembly operably associated with the positive displacement pump, wherein the motor assembly is disposed within the housing and comprises a motor and a shaft.

8. The secondary air system of claim 5 , further comprising a controller in signal communication with the secondary air pump assembly, the controller programmed to determine a mass air flow of the pump utilizing the position assembly.

9. The secondary air system of claim 5 , wherein the valve assembly comprises a check valve disposed in the air outlet of the housing.

10. The secondary air system of claim 5 , further comprising an O2 sensor disposed in the exhaust gas conduit.

Assignees

• Brocker Andrew
• Daley James J
• Fca Us Llc

Inventors

• Brocker Andrew
• Daley James J

Classifications

• F02M35/10222

  Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission · CPC title

• F01N3/323

  Electrically driven air pumps · CPC title

• F01N2560/025

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

• F01N3/32 Primary

  using air pump (using jet air pumps F01N3/34; pumps in general F04) · CPC title

• F02M35/10144

  Connections of intake ducts to each other or to another device · CPC title