Method and device for operating an internal combustion engine having a catalytic converter

• US 20080104943A1
• Filed: 01/08/2008
• Published: 05/08/2008
• Est. Priority Date: 09/21/2004
• Status: Abandoned Application

• Current Assignee: Claus Wundling, Daniel Scherrer, Michael Frank, Torsten Huppertz
• Original Assignee: Claus Wundling, Daniel Scherrer, Michael Frank, Torsten Huppertz
• Inventors: Scherrer, Daniel, Wundling, Claus, Huppertz, Torsten, Frank, Michael
• Application Number:
  US12/008,235
• Publication Number:
  US 20080104943A1
• Time in Patent Office: Days
• US Class Current: 60/284
• CPC Class Codes: F01N 3/2006 Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235
• CPC Class Codes: F02D 2041/026 using an external load, e.g. by increasing generator load or by changing the gear ratio
• CPC Class Codes: F02D 41/024 to increase temperature of the exhaust gas treating apparatus
• CPC Class Codes: F02D 41/0255 to accelerate the warming-up of the exhaust gas treating apparatus at engine start
• CPC Class Codes: F02N 19/10 by heating of engine coolants
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A method and a device for operating an internal combustion engine having a catalytic converter are described making it possible to heat the catalytic converter more quickly. An additional load of the internal combustion engine is applied to heat the catalytic converter.

Claims

1. A method for operating an internal combustion engine including a catalytic converter, the method comprising:

applying an additional load of the internal combustion engine to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if a start operation of the internal combustion engine has ended.

2. A method for operating an internal combustion engine including a catalytic converter, the method comprising:

applying an additional load of the internal combustion engine to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if a temperature of the internal combustion engine is below a preset threshold value.

3. A method for operating an internal combustion engine including a catalytic converter, the method comprising:

applying an additional load of the internal combustion engine to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if the internal combustion engine is in an idle mode operating state.

4. A method for operating an internal combustion engine including a catalytic converter, the method comprising:

applying an additional load of the internal combustion engine to heat the catalytic converter; and

deactivating the additional load when the internal combustion engine leaves an idle mode operating state.

5. An internal combustion engine sub-system, comprising:

a catalytic converter; and

an additional load of the internal combustion engine configured to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if a start operation of the internal combustion engine has ended.

6. An internal combustion engine sub-system, comprising:

a catalytic converter; and

an additional load of the internal combustion engine configured to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if a temperature of the internal combustion engine is below a preset threshold value.

7. An internal combustion engine sub-system, comprising:

a catalytic converter; and

an additional load of the internal combustion engine configured to heat the catalytic converter;

wherein the additional load of the internal combustion engine is applied to heat the catalytic converter only if the internal combustion engine is in an idle mode operating state.

8. An internal combustion engine sub-system, comprising:

a catalytic converter; and

an additional load of the internal combustion engine configured to heat the catalytic converter;

deactivating the additional load when the internal combustion engine leaves an idle mode operating state.