Apparatus and method for learning an air control valve opening of a hybrid electric vehicle

Patent metadata

Field	Value
Publication number	US-9416739-B2
Application number	US-201514864848-A
Country	US
Kind code	B2
Filing date	Sep 24, 2015
Priority date	Oct 20, 2014
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A method for learning an opening of an air control valve of a hybrid electric vehicle includes detecting data for controlling the opening of the air control valve during engine starting, detecting a change of a flap closing of the air control valve, controlling the opening of the air control valve to reduce a vibration based on the data when the engine is turned off, calculating the opening of the air control valve according to the flap closing of the air control valve, setting a reference value based on the change of the flap closing of the air control valve, comparing the calculated value with the reference value and when the calculated value is greater than the reference value, learning the opening of the air control valve as the calculated value after an ignition switch is turned off.

First claim

What is claimed is:

1. A computer implemented method for learning an opening of an air control valve of a hybrid electric vehicle, comprising:
detecting data for controlling the opening of the air control valve during engine starting;
detecting a change of a flap closing of the air control valve;
controlling the opening of the air control valve to reduce a vibration based on the data when the engine is turned off;
calculating the opening of the air control valve according to the flap closing of the air control valve;
setting a reference value based on the change of the flap closing of the air control valve;
comparing the calculated value with the reference value; and
when the calculated value is greater than the reference value, learning the opening of the air control valve as the calculated value after an ignition switch is turned off.

2. The method of claim 1 , wherein the engine of the hybrid electric vehicle is a diesel engine.

3. The method of claim 1 , further comprising,
when the calculated value is smaller than or equal to the reference value, not learning the opening of the air control valve.

4. The method of claim 1 , wherein the data includes information on at least one of a position value of an accelerator pedal, an engine speed and a temperature of an engine oil.

5. The method of claim 1 , wherein the reference value based on the change of the flap closing of the air control valve is set by feedback from an initial flap closing of the air control valve.

6. An apparatus for learning an opening of an air control valve of a hybrid electric vehicle, comprising:
an engine provided with an air control valve;
a data detector configured to detect data for controlling the opening of the air control valve; and
a controller configured to detect a change of a flap closing of the air control valve during engine starting, calculate the opening of the air control valve according to the flap closing of the air control valve when the engine is turned off, and learn the opening of the air control valve by comparing the calculated value and a reference value after an ignition switch is turned off.

7. The apparatus of claim 6 , wherein the engine of the hybrid electric vehicle is a diesel engine.

8. The apparatus of claim 6 , wherein the data detector comprises:
an accelerator pedal position sensor configured to detect a position value of an accelerator pedal;
an engine speed sensor configured to detect a speed of the engine; and
an oil temperature sensor configured to detect a temperature of an engine oil.

9. The apparatus of claim 6 , wherein the controller controls the opening of the air control valve to reduce a vibration based on the data when the engine is turned off.

10. The apparatus of claim 6 , wherein the controller sets the reference value based on the change of the flap closing of the air control valve.

11. The apparatus of claim 10 , wherein the controller learns the opening of the air control valve as the calculated value after the ignition switch is turned off when the calculated value is greater than the reference value.

12. The apparatus of claim 10 , wherein the controller sets the reference value by feedback from an initial flap closing of the air control valve.

13. A computer implemented method for learning an opening of an air control valve of a diesel engine hybrid electric vehicle, comprising:
detecting a flap closing of the air control valve during a diesel engine starting;
calculating the opening of the air control valve according to the flap closing of the air control valve when the diesel engine is turned off;
setting a reference value by comparing the flap closing of the air control valve with an initial flap closing of the air control valve; and
when the calculated value is greater than the reference value, learning the opening of the air control valve as the calculated value after an ignition switch is turned off.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Jang Hwayong

Classifications

• B60W2050/0089

  Operations & Transport · mapped topic

• F02D41/0002 Primary

  Controlling intake air · CPC title

• F02D41/263

  the program execution being modifiable by physical parameters · CPC title

• Y10S903/905

  Combustion engine · CPC title

• F02D41/062

  for starting (F02D41/061 takes precedence) · CPC title