KR101091674B1 - Method for preventing engine stall by IG key misoperating during vehicle driving - Google Patents

Method for preventing engine stall by IG key misoperating during vehicle driving Download PDF

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Publication number
KR101091674B1
KR101091674B1 KR1020050073012A KR20050073012A KR101091674B1 KR 101091674 B1 KR101091674 B1 KR 101091674B1 KR 1020050073012 A KR1020050073012 A KR 1020050073012A KR 20050073012 A KR20050073012 A KR 20050073012A KR 101091674 B1 KR101091674 B1 KR 101091674B1
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South Korea
Prior art keywords
key
driving
misoperation
ignition key
vehicle speed
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KR1020050073012A
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Korean (ko)
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KR20070018373A (en
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홍민기
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현대자동차주식회사
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention relates to a method for preventing starting off when a ignition key is misoperated while driving. When the engine ECU receives a ignition key off signal while driving, the ignition key is obtained from current vehicle speed, shift stage, engine speed, and accelerator pedal pressurization information. Determining that the off is due to a misoperation irrespective of the driver's intention, the control operation is performed to enter the limp home mode and to maintain the power latch operation for a predetermined time, and if the start key misoperation occurs more than three times, the malfunction occurs. The present invention relates to a method for preventing starting off during misoperation of a ignition key, which is configured to display and store codes.

According to the present invention, even if the ignition key is abnormally turned off while driving, it is possible to prevent the risk of suddenly turning off the engine, and to prevent the risk of accidents such as suddenly locking the steering wheel or not operating the steering wheel properly while driving and storing the stored trouble codes. It is effective to make it easy to know that there was a erroneous operation of the ignition key, thereby preventing further erroneous operation of the ignition key.

Vehicle, start-up key, misoperation, start-off prevention, engine ECU

Description

Method for preventing engine stall by IG key misoperating during vehicle driving}

1 is a block diagram showing the configuration of an apparatus for implementing the present invention;

2 is a flowchart illustrating the process of the present invention.

<Explanation of symbols for the main parts of the drawings>

11: ignition switch 12: vehicle speed detection unit

13 shift stage detecting unit 14 engine speed detection unit

15: pressurization amount detection unit 20: engine ECU

The present invention relates to a method for preventing starting off when a ignition key is misoperated while driving. More particularly, when the engine ECU receives a ignition key off signal while driving, the present vehicle speed, shift stage, engine speed, and accelerator pedal pressurization amount are described. From the information, it is determined that the ignition key off is caused by a misoperation irrelevant to the driver's intention, and the control operation for entering the lymph home mode and maintaining the power latch operation for a certain time is performed. The present invention relates to a method for preventing starting off during misoperation of the ignition key, which is configured to display and store a fault code when more than one occurrence occurs.

In general, when the driver operates the ignition key in the off position in the vehicle, engine starting is immediately turned off.

However, if the engine is stopped by relying only on the position of the ignition key regardless of the driving conditions of the engine and the vehicle as in the prior art, the driver's response is very difficult when the ignition key is accidentally returned to the off position regardless of the driver's intention while driving. .

For example, when the driver puts several keys on the ignition key heavily and the ignition key is caught on the body while driving or when the ignition key is returned to the off position due to the weight of other keys, the ignition off may occur.

In particular, in the case of luxury cars, in the case of vehicles equipped with EPS (Electronic Power Steering) which allows the steering wheel to be locked when the ignition is turned off or the steering wheel can be easily operated to prevent theft, the hydraulic pressure is cut off when the ignition is turned off. It can become hard and cause a big accident soon.

As such, the driver does not easily recognize the cause of the intermittent start-off phenomenon caused by turning the ignition key while driving, and eventually finds a service center, and most of the service centers do not identify the cause.

As a result, driver dissatisfaction is increasing about the starting-off phenomenon in which the ignition key is accidentally turned regardless of the driver's intention while driving, and a great threat to the driver's safety is required.

Therefore, the present invention has been invented to solve the above problems, when the engine ECU receives a start key off signal while driving, starting key off from the current vehicle speed, gear stage, engine speed, accelerator pedal pressure information Is judged to be caused by a misoperation irrespective of the driver's intention, and performs a control operation to enter into the limp home mode and maintain the power latch operation for a predetermined time, and when the start key misoperation occurs more than three times, a fault code It is configured to display and store the engine, thereby preventing the engine from turning off suddenly even if the ignition key is abnormally turned off while driving, and preventing accident risks such as sudden lock of the steering wheel or incorrect steering of the wheel while driving. The erroneous code indicates that there was a erroneous starter key operation. It is an object of the present invention to provide a method for preventing starting off during erroneous operation of the ignition key during driving.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention includes the steps of: (a) when the engine ECU receives the start key off signal by the ignition switch, determining whether the current vehicle speed is greater than or equal to the reference vehicle speed from the signal of the vehicle speed detection unit;

(b) determining whether the shift stage of the current transmission is in the shift stage input for driving, such as the D stage of the automatic transmission or the 1 to 5 stage of the manual transmission, from the signal of the shift stage detecting unit when it is determined to be equal to or greater than the reference vehicle speed; ;

(c) determining whether the current engine speed is higher than the reference rpm based on a signal of the engine speed detector when determining that the vehicle is in the shift stage for driving;

(d) determining whether the accelerator pedal pressurization amount is greater than or equal to the reference pressurization amount based on the signal of the accelerator pedal pressurization detection unit when it is determined that the reference rpm is equal to or greater than;

(e) determining that the starter key is misoperated when it is determined to be equal to or greater than the reference pressurization amount, and performing a control operation for switching to a lymph home mode;

It is characterized by a method for preventing starting off during misoperation of the ignition key during driving.

In particular, the engine ECU further comprises the step of performing a control operation for maintaining the operation of the power latch for a predetermined time in addition to entering the limp home mode when judging the start-up key misoperation.

The engine ECU may further include storing and counting the number of misoperation determinations every time the start key misoperation determination, and expressing and storing a fault code when the misoperation determination is three or more times.

The reference vehicle speed may be 80 km / h, the reference rpm may be 1500 rpm, and the reference pressurization amount may be set to 5% pressurization amount with respect to 100% at full pressurization.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a method for preventing starting off during operation of the ignition key off while driving. When the engine ECU receives the ignition key off signal, the vehicle speed, shift stage, engine speed, and accelerator pedal pressurization amount information among various signals coming into the engine ECU Determines that the current ignition key off is due to a misoperation irrelevant to the driver's intention, and performs a control operation to switch to the limp home mode and maintains the power latch for a predetermined time. It is configured to perform a control operation and to display and store a fault code when the above-mentioned start key-off operation occurs more than three times, thereby preventing the engine from suddenly turning off even if the start-up key is abnormally turned off while driving. This prevents accidents such as sudden lock of the wheel while driving or improper steering. In addition, the present invention relates to a method for preventing starting off during misoperation of the ignition key during driving so that the erroneous operation of the ignition key can be known from the stored fault code to prevent further misoperation of the ignition key.

1 is a block diagram showing the configuration of an apparatus for implementing the present invention, Figure 2 is a flowchart showing the process of the present invention.

As shown in the drawing, an apparatus for implementing the present invention includes an ignition switch 11 for outputting a signal according to an on / off operation of a ignition key, a vehicle speed detection unit 12 for detecting a vehicle speed, and a shift for detecting a shift stage of a transmission. The stage detection unit 13, the engine speed detection unit 14 for detecting the engine speed, the pressurization amount detection unit 15 for detecting the pressurization amount of the accelerator pedal during driving, and the start key while driving the signal of the respective detection elements The engine ECU 20 outputs a control signal after determining a misoperation.

In this case, the pressurization amount detecting unit 15 is known as an acceleration detection sensor that detects the pressurization level of the accelerator pedal pressed by the driver during acceleration while driving, and the output signal of the acceleration detection sensor is input to the engine ECU 20. It is.

In addition, when the engine ECU 20 receives the ignition key off signal by the ignition switch 11, the current vehicle speed, the gear stage, the engine speed, and the accelerator pedal obtained through the respective detection elements 12 to 15. By determining the driver's intention from the pressurized amount information, it is determined whether the current start key-off operation is a normal start-off operation by the driver or a misoperation irrelevant to the driver's intention.

In more detail, first, the engine ECU 20 determines whether the current vehicle speed detected by the vehicle speed detection unit 12 is greater than or equal to a preset reference value, that is, the reference vehicle speed, when a signal indicating that the start key is operated is input. Done.

Here, when the current vehicle speed is equal to or greater than the reference vehicle speed, the shift stage of the current transmission through the shift stage detecting unit 13 is input for driving, that is, the D (or L1, L2) stage or 1 of the manual transmission in the case of an automatic transmission. It is determined whether or not it is 5 stages.

In this case, when it is determined that the current shift stage is the shift stage input for driving, it is determined whether the current engine speed detected by the engine speed detection unit 14 is equal to or greater than the preset reference rpm.

When it is determined that the current engine speed is equal to or greater than the reference rpm, it is determined whether the accelerator pedal pressurization amount detected by the pressurization amount detection unit 15 is equal to or greater than the preset input pressurization amount.

In this case, when it is determined that the reference pressurization amount is greater than or equal to the engine ECU 20, the start key is turned off due to the misoperation of the current start key off operation irrelevant to the driver's intention, for example, the start key is applied to the body or the weight of the other keys. If it is returned to the position it is determined.

In a preferred embodiment, the reference vehicle speed is 80km / h, the reference rpm is 1500rpm, the reference pressurization amount can be set to 5% pressurization amount to 100% when fully pressurized.

That is, the engine ECU 20 determines whether the current vehicle speed is 80 km / h or more when the ignition key off operation signal is input. When the engine ECU 20 is more than 80 km / h, the current transmission state is 1 ~ 1 of the D stage or the manual transmission of the automatic transmission. Determine whether it is 5 steps.

In the case of the D stage or the 1 to 5 stage, it is determined whether the engine speed is 1500 rpm or more, and in the case of 1500 rpm or more, it is determined whether the pressurization amount of the accelerator pedal is 5% or more.

When all four conditions are satisfied as described above, the engine ECU 20 determines that the ignition key is turned off by a mistake or other variable that the driver does not intend to turn off the vehicle normally.

On the other hand, when it is determined that the ignition key is misoperated, the engine ECU 20 performs a control operation for switching to the limp home mode to prevent the engine from turning off while gradually reducing the vehicle speed.

In addition, a control operation is performed to maintain a power latch for a predetermined time in addition to entering the limp home mode, which is known to be a kind of supply switch for supplying power to the engine ECU 20. The engine ECU maintains the operation of the power latch for a predetermined time, for example, at least 10 seconds, with the entry of the limp home mode, so that the engine ECU is turned off for 10 seconds while the power latch remains in operation. To prevent the engine ECU from turning off, which prevents the handle from being locked or the hydraulic pressure of the EPS shut off.

The engine ECU 20 counts the number of times of recording and the number of times every start key misoperation determination. If the misoperation determination is more than three times, the engine ECU 20 displays a fault code and stores the fault code. This is to make it easy to identify the cause through this fault code when it is in stock.

As a result, the driver can recognize that there is a misoperation of the ignition key while driving, so that the driver does not carry a large number of keys or accessories on the ignition key, or pay attention to touching the ignition key while driving. You can do that.

In this manner, according to the present invention, even if the ignition key is abnormally turned off while driving, the engine can be prevented from being suddenly turned off, and also the risk of suddenly locking the steering wheel or not operating the steering wheel while driving is prevented. do.

As described above, according to the method of preventing starting off during misoperation of the ignition key during driving according to the present invention, when the engine ECU receives a ignition key off signal while driving, the current vehicle speed, gear stage, engine speed, and accelerator pedal pressure are applied. From the volume information, it is determined that the ignition key off is caused by a misoperation irrespective of the driver's intention, and is configured to perform a control operation for entering the lymph home mode and maintaining the power latch operation for a certain time, thereby driving the driving performance, safety and It is possible to improve the marketability.

That is, even if the ignition key is abnormally turned off while driving, the engine can be prevented from being suddenly turned off, and the risk of accidents such as a sudden lock of the steering wheel or a malfunction of the steering wheel while driving is prevented. The probability of accidents can be significantly reduced.

In addition, it is configured to display and store a fault code when the start key misoperation occurs three times or more, so that the driver can easily recognize that there is a start key misoperation while driving from the stored fault code. You can make sure that you don't carry keys or accessories around, or you can pay attention to things like touching the ignition key while driving.

Claims (4)

(a) when the engine ECU receives the ignition key off signal by the ignition switch, determining whether the current vehicle speed is greater than or equal to the reference vehicle speed from the signal of the vehicle speed detection unit; (b) determining whether the shift stage of the current transmission is in the shift stage input for driving, such as the D stage of the automatic transmission or the 1 to 5 stage of the manual transmission, from the signal of the shift stage detecting unit when it is determined to be equal to or greater than the reference vehicle speed; ; (c) determining whether the current engine speed is higher than the reference rpm based on a signal of the engine speed detector when determining that the vehicle is in the shift stage for driving; (d) determining whether the accelerator pedal pressurization amount is greater than or equal to the reference pressurization amount based on the signal of the accelerator pedal pressurization detection unit when it is determined that the reference rpm is equal to or greater than; (e) determining that the starter key is misoperated when it is determined to be equal to or greater than the reference pressurization amount, and performing a control operation for switching to a lymph home mode; How to prevent starting off during start-up key misoperation while driving. The method according to claim 1, The engine ECU further includes the step of performing a control operation for maintaining the operation of the power latch for a predetermined time, in addition to entering the limp home mode when the start-up key misoperation is judged, the start-off during the start-up key misoperation during driving, characterized in that Prevention method. The method according to claim 1 or 2, The engine ECU further includes the step of counting and storing the number of misoperation judgment every time the start key misoperation determination, and expressing and storing the fault code when the misoperation determination is three or more times. How to prevent starting off The method according to claim 1 or 2, When the reference vehicle speed is set to 80 km / h, the reference rpm is set to 1500 rpm, and the reference pressurized amount is set to 5% pressurized amount with respect to 100% when fully pressurized. Prevention method.
KR1020050073012A 2005-08-09 2005-08-09 Method for preventing engine stall by IG key misoperating during vehicle driving KR101091674B1 (en)

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KR1020050073012A KR101091674B1 (en) 2005-08-09 2005-08-09 Method for preventing engine stall by IG key misoperating during vehicle driving

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Application Number Priority Date Filing Date Title
KR1020050073012A KR101091674B1 (en) 2005-08-09 2005-08-09 Method for preventing engine stall by IG key misoperating during vehicle driving

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KR101091674B1 true KR101091674B1 (en) 2011-12-08

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101575510B1 (en) 2014-08-01 2015-12-07 현대자동차주식회사 Method for determining cause of engine stoppage using monitoring of ignition power
CN107521375A (en) * 2017-08-21 2017-12-29 合肥力正新能源科技有限公司 Limping control method for pure electric vehicle
CN107512198A (en) * 2017-08-21 2017-12-26 合肥翔望智能科技有限公司 A kind of pure electric automobile limping control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100255594B1 (en) 1995-12-26 2000-05-01 정몽규 Engine off control system during drive state
JP2004293733A (en) 2003-03-28 2004-10-21 Nissan Diesel Motor Co Ltd Emergency circuit for automatic transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100255594B1 (en) 1995-12-26 2000-05-01 정몽규 Engine off control system during drive state
JP2004293733A (en) 2003-03-28 2004-10-21 Nissan Diesel Motor Co Ltd Emergency circuit for automatic transmission

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