Control apparatus of engine having turbocharger and method thereof

Patent metadata

Field	Value
Publication number	US-9903317-B2
Application number	US-201414339208-A
Country	US
Kind code	B2
Filing date	Jul 23, 2014
Priority date	Dec 23, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A control apparatus of an engine having a turbocharger may include the engine generating power by combustion of a fuel, the turbocharger including a turbine operated by exhaust gas of the engine and a compressor connected to the turbine by a rotating shaft, and thus supercharging air to a combustion chamber provided in the engine by the compressor, a detecting sensor detecting pre-ignition in the combustion chamber of the engine, and a controller controlling supercharging pressure supplied to the combustion chamber by using a required torque, ignition timing of the combustion chamber, and an air-fuel ratio, and thus controlling the pre-ignition in the combustion chamber, when the pre-ignition in the combustion chamber may be detected by the detecting sensor.

First claim

What is claimed is:

1. A control method of an engine having a turbocharger, comprising:
detecting whether pre-ignition occurs in a combustion chamber of the engine by a detecting sensor; and
enriching fuel supplied to the combustion chamber and then adjusting supercharging pressure supplied to the combustion chamber when the pre-ignition occurs in the combustion chamber of the engine,
wherein the supercharging pressure is adjusted to minimize a torque variation of the engine.

2. The control method of the engine having the turbocharger of claim 1 , further comprising:
adjusting the supercharging pressure based on a required torque, ignition timing of the combustion chamber, and an air-fuel-ratio.

3. The control method of the engine having the turbocharger of claim 2 , further comprising:
determining, by the controller, whether the pre-ignition in the combustion chamber is suppressed; and
increasing, by the controller, the air-fuel ratio to a predetermined value so as to suppress the pre-ignition while adjusting the supercharging pressure of air supplied to the combustion chamber.

4. The control method of the engine having the turbocharger of claim 1 , further comprising:
changing, by the controller, the engine to a limp home mode when the controller determines that the pre-ignition is not suppressed.

5. A control apparatus of an engine having a turbocharger, comprising:
the engine generating a power by combustion of a fuel;
the turbocharger including a turbine operated by exhaust gas of the engine and a compressor connected to the turbine by a rotating shaft, and thus supercharging air to a combustion chamber provided in the engine by the compressor;
a detecting sensor detecting pre-ignition in the combustion chamber of the engine; and
a controller configured to enrich fuel supplied to the combustion chamber by increasing an amount of the fuel supplied to the combustion chamber and then to adjust supercharging pressure supplied to the combustion chamber when the pre-ignition in the combustion chamber is detected by the detecting sensor,
wherein the supercharging pressure is adjusted by the controller to minimize a torque variation of the engine.

6. The control apparatus of claim 5 , wherein adjusts the supercharging pressure is adjusted based on a required torque, ignition timing of the combustion chamber, and an air-fuel-ratio.

7. The control apparatus of the engine having the turbocharger of claim 6 ,
wherein the controller is configured to increase the air-fuel ratio to suppress the pre-ignition by adjusting the supercharging pressure supplied to the combustion chamber.

8. The control apparatus of the engine having the turbocharger of claim 5 ,
wherein the controller is further configured to change the engine to a limp home mode when the pre-ignition is not suppressed by control of the supercharging pressure supplied to the combustion chamber.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Han Dong Hee
• Choi Kwanhee
• Lim Hyun Jun
• Joo Nahm Roh
• Kim Yoon Joo
• Park Kiwon
• Lee Joowon
• Park Jong Il

Classifications

• Y02T10/12

  Improving ICE efficiencies · CPC title

• Y02T10/144

  Cross-Sectional Technologies · mapped topic

• F02M25/0706 Primary

  Mechanical Engineering · mapped topic

• F02D41/0007

  for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12) · CPC title

• F02B47/08

  the substances including exhaust gas · CPC title