Method of controlling engine of ISG vehicle

• US 9,506,444 B2
• Filed: 04/17/2014
• Issued: 11/29/2016
• Est. Priority Date: 07/09/2013
• Status: Expired due to Fees

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: Jang, Jae Hoon
• Primary Examiner(s): Huynh, Hai
• Assistant Examiner(s): NAJMUDDIN, RAZA NEHAL
• Application Number:
  US14/255,618
• Publication Number:
  US 20150019114A1
• Time in Patent Office: 957 Days
• Field of Search: 123/179.3, 123/179.4, 701/112, 701/113
• US Class Current: 1/1
• CPC Class Codes: F02N 11/0814 comprising means for controlling automatic idle-start-stop
• CPC Class Codes: F02N 11/0822 related to action of the driver
• CPC Class Codes: F02N 11/0825 related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
• CPC Class Codes: F02N 11/0837 Environmental conditions thereof, e.g. traffic, weather or road conditions
• CPC Class Codes: F02N 2200/023 Engine temperature
• CPC Class Codes: F02N 2200/024 Engine oil temperature
• CPC Class Codes: F02N 2200/125 Information about other vehicles, traffic lights or traffic congestion
• CPC Class Codes: F02N 2300/306 with external senders or receivers, e.g. receiving signals from traffic lights, other vehicles or base stations
• CPC Class Codes: G08G 1/096725 where the received information generates an automatic action on the vehicle control
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

Provided is a method of controlling an engine of an idle-stop and go (ISG) vehicle. The method includes allowing, when an engine stop condition is satisfied, the engine to idle-stop and maintaining, when an engine stop signal is transmitted from an outside, an idle-stop state of the engine although an engine restarting condition is satisfied.

Claims

1. A method of controlling an engine of an idle-stop and go (ISG) vehicle, the method comprising:

allowing, when an engine stop condition is satisfied, the engine to idle-stop;

maintaining, when an engine stop signal is transmitted from an outside, an idle-stop state of the engine although an engine restarting condition is satisfied, and

restarting the engine when an engine restarting signal is transmitted from the outside,

restarting the engine, prior to the engine restarting signal being transmitted from the outside, when a power voltage of a 12V battery is less than a reference voltage, or when either a cooling water temperature or an engine oil temperature is higher than a reference temperature.

2. The method of claim 1, wherein the engine restarting condition comprises at least one of receiving an ignition key on signal according to a user input, sensing an accelerator pedal input, or shifting a gear to move the vehicle.

3. The method of claim 1, wherein the engine stop condition comprises at least one of receiving an ignition key off signal according to a user input, sensing a brake pedal input, shifting a gear to stop the vehicle, or receiving the engine stop signal transmitted from the outside.

4. The method of claim 1, wherein the engine stop signal is transmitted from a radio frequency identification (RFID) transceiver located in the outside and is received by an RFID tag included in the ISG vehicle.

5. An ISG vehicle comprising:

an engine idle-stopping and being restarted; and

a controller configured to;

control the engine to idle-stop when an engine stop condition is satisfied and maintaining an idle-stop state of the engine although an engine restarting condition is satisfied, when an engine stop signal is transmitted from an outside, and

restart the engine, prior to the engine restarting signal being transmitted from the outside, when a power voltage of a 12V battery is less than a reference voltage, or when either a cooling water temperature or an engine oil temperature is higher than a reference temperature.

6. The ISG vehicle of claim 5, wherein the engine restarting condition comprises at least one of receiving an ignition key on signal according to a user input, sensing an accelerator pedal input, or shifting a gear to move the vehicle.

7. The ISG vehicle of claim 5, wherein the engine stop condition comprises at least one of receiving an ignition key off signal according to a user input, sensing a brake pedal input, shifting a gear to stop the vehicle, or receiving the engine stop signal transmitted from the outside.

8. The ISG vehicle of claim 5, wherein the controller controls the engine to be restarted when receiving the engine restarting signal from the outside.

9. The ISG vehicle of claim 5, wherein the engine stop signal is transmitted from an RFID transceiver located in the outside, the ISG vehicle further comprising an RFID tag receiving the engine stop signal.