KR20120018403A - Idle stop and start system and control method for using brake control status sensing - Google Patents

Idle stop and start system and control method for using brake control status sensing Download PDF

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Publication number
KR20120018403A
KR20120018403A KR1020100081177A KR20100081177A KR20120018403A KR 20120018403 A KR20120018403 A KR 20120018403A KR 1020100081177 A KR1020100081177 A KR 1020100081177A KR 20100081177 A KR20100081177 A KR 20100081177A KR 20120018403 A KR20120018403 A KR 20120018403A
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South Korea
Prior art keywords
state
vehicle
brake pedal
braking
waiting time
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KR1020100081177A
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Korean (ko)
Inventor
정찬순
허강
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정찬순
주식회사 한국엔엠텍
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Priority to KR1020100081177A priority Critical patent/KR20120018403A/en
Publication of KR20120018403A publication Critical patent/KR20120018403A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2250/00—Monitoring, detecting, estimating vehicle conditions
    • B60T2250/04—Vehicle reference speed; Vehicle body speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2302/00—Responses or measures related to driver conditions
    • B60Y2302/09—Reducing the workload of driver

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Regulating Braking Force (AREA)

Abstract

The present invention discloses an ISS control apparatus and method using the brake control state detection. In one embodiment, the state detection unit for detecting that the state of the brake pedal is a braking state through the brake pedal switch for detecting the state of the brake pedal at the same time detects that the vehicle is stationary through the vehicle speed sensor for detecting the speed of the vehicle; A braking automatic processor for controlling the solenoid valve assembly to maintain the vehicle in a stopped state without the driver pressing the brake pedal after the preset first waiting time when the vehicle is in the stopped state and the brake pedal is in the braking state; And an operation switching unit for switching the engine of the vehicle to the idle stop state after the preset second waiting time when it is determined that the state of the brake pedal is switched to the non-breaking state after the preset first waiting time. By providing the ISS system without interlocking the beater switch, the ISS system can be easily applied to existing vehicles without the ISS system.

Figure P1020100081177

Description

IS control device and method using brake control status sensing {Idle Stop and Start system and control method for using brake control status sensing}

The present invention relates to an Idle Stop and Start (ISS) system of a vehicle, and more particularly, to save fuel by automatically stopping the engine driving of the vehicle while the vehicle is stopped. The present invention relates to an ISS control apparatus and a method using a brake control state detection.

In general, as a device for improving stability while driving the vehicle, ABS (ANTI-LOCK BRAKE SYSTEM) for preventing slip during braking, TCS (TRACTION CONTROL SYSTEM) for preventing slip during sudden start, and stable posture while driving the vehicle ESP (ELECTRONIC STABILITY PROGRAM), a vehicle stability system for maintaining the In other words, the ABS mounted on the vehicle ensures stability at the time of braking, the TCS is to prevent slipping at the start, and the ESP is to maintain the posture stably with brake or engine torque when turning the vehicle in conjunction with the ABS. .

Separately, the present applicant maintains the brake hydraulic control solenoid valve of a vehicle which prevents the vehicle from slipping by maintaining the pressure applied to the wheel cylinder when the vehicle is stopped on a slope or the like when the brake pedal is stepped on. An assembly and a hydraulic control unit and a vehicle control system using the same have been filed in 2008. No. 4,279 (filed on May 9, 2008), which automatically stops driving the engine of the vehicle while the vehicle is stationary. The patent application for the engine drive control system of fossil fuel vehicle that can reduce the emission of air pollutants and to reduce the emission of air pollutants was filed in 2008 No. 110041 (filed Nov. 6, 2008).

1 is a block diagram of an engine drive control apparatus for a fossil fuel vehicle according to the present invention of the present applicant, Patent Application No. 110041 of 2008.

As shown in FIG. 1, an engine drive control apparatus of a conventional fossil fuel vehicle includes a master cylinder 10 generating hydraulic pressure by an operation of a brake pedal, and a wheel cylinder installed at each wheel to brake each wheel by hydraulic pressure. (30), two hydraulic lines 20, 22 connecting the master cylinder 10 and the wheel cylinder 30, the hydraulic line 20 between the master cylinder 10 and the wheel cylinder 30, The ABS control unit installed in the 22 and the ABS control unit for controlling the operation of the ABS actuator 40, the ABS actuator 40 to intermittently control the pressure transmitted to the wheel cylinder 30 to prevent slip during braking of the vehicle ( 50, the housing 140 is the same solenoid valve assembly 110, 120 and inclination sensor 130 are installed in each of the hydraulic lines 20, 22 between the ABS actuator 40 and the master cylinder 10 Hydraulic control unit 100 is installed in the), the vehicle speed sensor 70 for detecting the vehicle speed, first Braking pedal switch 80 for detecting whether the pedal is stepped, accelerator pedal switch 90 for detecting whether the accelerator pedal is stepped, gear state detection unit 95 for detecting the current gear state of the vehicle, starting motor of the vehicle ( Starting motor driving unit 200 for driving 210, the engine driving unit 220 for supplying fuel and air to the engine of the vehicle in a timely manner, and the solenoid valve assembly (110), 120 when the vehicle is stopped in a running state By controlling and energizing the solenoid coil (not shown), the braking force is maintained regardless of whether the brake pedal is stepped (hereinafter referred to as an 'auto hold' function) and the engine driving unit 220 is controlled to drive the engine. When the vehicle detects the intention of starting the vehicle in this state, the solenoid valve assemblies 110 and 120 are controlled to release the solenoid coil (not shown) and the auto hold function. The current gear state detected by the fish state detection unit 95 is checked, and when the gear state is in the parking position or the neutral position, the starting motor driving unit 200 and the engine driving unit 220 are controlled to resume driving of the engine. And ECU 60 to restart (restart).

In the above-described configuration, when the engine 60 is stopped from the ECU 60, the battery contact is located at the ignition-on terminal. In this state, as is well known, the solenoid valve assembly 110, 120, and each sensor Battery power is supplied to the starter motor driver 200, the engine driver 220, and the ECU 60 as well as the 70, 130, the switches 80, 90, and the detector 95.

However, according to the engine drive control apparatus of the conventional fossil fuel vehicle as described above, in the process of driving the engine and automatically stopping the driving, " solenoid valve assembly 110, 120 when the vehicle is stopped in the running state. To control the engine drive unit 220 by controlling the engine driver 220 while maintaining the braking force regardless of whether the brake pedal is stepped by exciting the solenoid coil (not shown). Stopped.

However, when the engine driving control apparatus of the conventional fossil fuel vehicle stops driving the engine and the vehicle needs to start immediately, the engine must be driven immediately because the stopped engine must be driven. There was an issue of excessive consumption.

On the other hand, when the ISS system is mounted on a vehicle using conventional fossil fuel, which is not equipped with the ISS system, the INS control device and the inhibitor switch implemented under the engine must be connected to the vehicle without lifting the engine of the vehicle. It was difficult to connect the inhibitor switch and the ISS system.

The present invention is to solve the above-mentioned problems, by providing a waiting time in the ISS conversion conditions, such as restarting after the vehicle stops, the engine prevents frequent conversion to the idle start state or idle stop state, the engine is unreasonable or battery An object of the present invention is to provide an apparatus and a method for controlling an ISS using a brake control state detection that can prevent the discharge of the battery.

In addition, an object of the present invention is to provide an ISS control apparatus and method using a brake control state detection that can provide the ISS system by detecting the brake control state of the vehicle without interlocking with the vehicle's inhibitor switch when the ISS system is applied. have.

One aspect of the ISS control device using the brake control state detection of the present invention is the state of the brake pedal through the brake pedal switch for detecting the state of the brake pedal at the same time detects that the vehicle is stationary through the vehicle speed sensor for detecting the speed of the vehicle A state detection unit that detects that the breaking state; A braking automatic processor for controlling the solenoid valve assembly to maintain the vehicle in a stopped state without the driver pressing the brake pedal after the preset first waiting time when the vehicle is in the stopped state and the brake pedal is in the braking state; And an operation switching unit for switching the engine of the vehicle to the idle stop state after the preset second waiting time when it is determined that the state of the brake pedal is switched to the non-breaking state after the preset first waiting time.

Another aspect of the ISS control device using the brake control state detection of the present invention is the state of the brake pedal through the brake pedal switch detects the state of the brake pedal at the same time detects that the vehicle is stationary through the vehicle speed sensor for detecting the speed of the vehicle A state detection unit that detects that the breaking state; And after determining that the brake pedal is switched to the non-breaking state after the vehicle is stopped and the brake pedal is switched to the braking state, the engine stops the vehicle after the preset second waiting time. It includes an operation switching unit for switching to.

Wherein the operation switching unit, the driver can position the hunger in the neutral (N) or park (P) or use the hand brake so that the vehicle can be kept stationary even when the brake pedal is in a non-brake state. When the state of the brake pedal is in the braking state during the waiting time, the idle start state of the vehicle engine may be maintained while the braking state is maintained.

One aspect of the ISS control method using the brake control state detection of the present invention includes a first step in which the ECU detects that the vehicle is stationary through the vehicle speed sensor and determines whether the brake pedal is in the breaking state through the brake pedal switch; If it is determined in the first step that the vehicle is in a stopped state and the brake pedal is in the breaking state, the ECU determines whether the brake pedal is in the breaking state even after the first waiting time; And when the state of the brake pedal is determined to be a braking state even after the first waiting time in the second step, when the ECU detects that the state of the brake pedal is switched from the braking state to the non-breaking state, the preset second standby state A third step of transitioning the engine of the vehicle to an idle stop state after time.

The ECU may further include controlling the solenoid valve assembly to switch the state of the brake pedal to the non-breaking state after the first waiting time to maintain the vehicle in a stopped state without the driver pressing the brake pedal.

In the ISS control method, after the first waiting time, the driver places the hunger in the neutral (N) or the park (P) or operates the hand brake so that the brake pedal is in a non-breaking state. You can keep your vehicle stationary without stepping on it.

Here, the step of switching the engine of the vehicle to the idle stop state after the preset second waiting time may include: determining, by the ECU, whether the state of the brake pedal is switched from the braking state to the non-breaking state; If it is determined that the state of the brake pedal is to be switched to the non-breaking state in the step of determining whether the state of the brake pedal is to be switched from the braking state to the non-breaking state, the ECU determines the braking of the second waiting time. Determining whether the state of the pedal is switched to the breaking state; And when it is determined that the state of the brake pedal is switched to the braking state in the determining whether the state of the brake pedal is switched to the braking state during the second waiting time, the ECU determines that the state of the brake pedal is the braking state. While maintaining the engine of the vehicle during the idle state, the step of determining whether the state of the brake pedal is switched to the braking state during the second waiting time, and the state of the brake pedal is switched to the braking state Otherwise, switching the engine of the vehicle to an idle stop state.

According to the above-described configuration, the ISS control apparatus and method using the brake control state detection according to the present invention allow the engine to frequently switch to the idle start state or the idle stop state by giving a waiting time under ISS conversion conditions such as restarting after the vehicle stops. This prevents the engine from becoming overwhelmed or discharges the battery.

In addition, the present invention provides an ISS system without interlocking with the vehicle's inhibitor switch, thereby providing another outstanding effect of easily applying the ISS system to an existing vehicle to which the ISS system is not applied.

1 is a block diagram of an engine drive control apparatus of a conventional fossil fuel vehicle.
Figure 2 is a functional block diagram showing the configuration of the ISS control apparatus using the brake control state detection in accordance with the present invention.
3 is a timing diagram illustrating operation timings of respective components for providing an ISS function by the ISS control device using the brake control state detection according to FIG. 1.
4 is a timing diagram illustrating the operation timing of each component according to the braking state detection in the second waiting time during the process for the ISS control apparatus using the brake control state sensing according to FIG. 2 to provide the ISS function.
FIG. 5 is a timing diagram illustrating the operation of each component for switching the engine of the vehicle from the idle stop state to the idle start state in the ISS control apparatus using the brake control state detection according to FIG. 2.
Figure 6 is a flow chart illustrating a ISS control method using a brake control state detection in accordance with the present invention.
7 is a flowchart illustrating the detailed steps of the fifth step (S5) of the ISS control method using the brake control state detection according to FIG.
8 is a functional block diagram showing the configuration of the ISS control apparatus using the brake control state detection according to another embodiment of the present invention.
FIG. 9 is a timing diagram illustrating an operation timing of each component for providing an ISS function by the ISS control apparatus using the brake control state sensing according to FIG. 8.

The following detailed description of specific embodiments provides several descriptions of specific embodiments of the present invention. However, the present invention can be implemented in many different ways, which are defined and covered by the claims. The detailed description is described with reference to the drawings, wherein like reference numerals refer to the same or functionally similar elements.

The terminology used in the description provided herein is for the purpose of describing particular embodiments of the invention only and should not be construed as limiting or limiting the invention to any particular method. Furthermore, embodiments of the present invention may include a number of novel features which are necessary to represent the overall desirable properties of the invention or to practice the invention provided herein.

Hereinafter, when the ISS control device using the brake control state detection of the present invention is applied to the engine driving control apparatus of the conventional fossil fuel vehicle described above, the configuration may be the same as that of FIG. 1, and the ECU 60 may include the following configuration. Is the same as

2 is a functional block diagram showing the configuration of the ISS control apparatus using the brake control state detection according to the present invention.

The ISS control apparatus using the brake control state detection according to an embodiment of the present invention includes an ECU 60 including a state detection unit 61, an automatic braking processor 62, and an operation switching unit 63.

The ECU 60 is connected to the engine 101 through the engine driver 220, and is connected to the vehicle speed sensor 70, the brake pedal switch 80, the accelerator pedal sensor 90, and the solenoid valve assemblies 110 and 120. It is.

The engine 101 is driven or blocked through an engine driver 220 that supplies or blocks fuel and air.

The brake pedal switch 80 is connected to the brake pedal to detect state information of the brake pedal. At this time, the state of the braking pedal is referred to as a "breaking state" when the driver stepped on the brake pedal, and the state of not pressing the brake pedal is referred to as a "non-breaking state".

On the other hand, the solenoid valve assembly (110, 120) maintains the stopped state of the vehicle after a predetermined time even if the driver is turning on the brake pedal after the vehicle is stopped, or the gear is not located in the parking (P).

And the vehicle speed sensor 70 detects the speed of the vehicle.

The state detecting unit 61 of the ECU 60 detects that the vehicle is in a stopped state through the vehicle speed sensor 70 detecting the speed of the vehicle and simultaneously detects that the state of the brake pedal is in the breaking state through the brake pedal switch 80. .

In addition, the braking automatic processing unit 62 of the ECU 60 detects that the vehicle is stopped and the braking pedal is in the braking state through the state detecting unit 61, and then the braking pedal is in the breaking state even after the preset first waiting time. By controlling the solenoid valve assembly (110, 120) to excite the solenoid coil (not shown), the braking force is maintained regardless of whether the brake pedal is stepped (hereinafter, this function is referred to as an 'auto hold' function). Keep the vehicle stationary without stepping on it.

The operation switching unit 63 of the ECU 60 detects that the vehicle is in a stopped state and the brake pedal is in a braking state through the state detection unit 61, and then the state of the brake pedal is switched from the braking state to the non-breaking state. If it is determined, the engine 101 of the vehicle is switched to the idle stop state after the second waiting time so that the driver can move the vehicle at any time through the accelerator pedal. Here, the idle stop state refers to a state where the engine of the vehicle is stopped, and the idle start state refers to operating the engine while the engine of the vehicle is stopped.

In addition, the operation switching unit 63 of the ECU 60 maintains the idle start state of the vehicle engine while the braking pedal maintains the braking state when the braking pedal becomes the braking state again during the second waiting time. After the brake pedal is in the non-breaking state, the engine 101 of the vehicle is switched to the idle stop state again after the second waiting time.

The ISS system of the vehicle to which the ISS control apparatus using the brake control state detection according to the exemplary embodiment of the present invention is applied will be described.

3 to 5 and 9 are timing diagrams showing operation timings of respective components for providing an ISS function by an ECU, which is an ISS control device using the brake control state detection according to FIG. 2.

Here, the hatched portion of the acceleration sensor means that the vehicle is moving, and the empty space indicates that the vehicle is in a stopped state.

And the hatched portion of the brake pedal switch is a braking state indicating that the driver is stepping on the brake pedal, and the empty space represents a non-breaking state indicating that the driver is not stepping on the brake pedal.

Here, the horizontally hatched portion or the empty space among the hatched portions of the autohold indicates that the autohold function is not operating, and the hatched portion indicates that the autohold function is operating.

On the other hand, hatched portions of the positions D, N and P of the gear indicate that the gear is in that position.

In addition, the hatched parts of the engine and generator mean that they are operating, and the empty space means that they do not work.

The hatched portion of the acceleration sensor indicates that the driver is pressing the accelerator pedal, and the empty space indicates that the driver is not pressing the accelerator pedal.

First, the state detection unit 61 detects whether the vehicle being moved through the vehicle speed sensor 70 is in a stopped state.

In addition, the state detecting unit 61 detects whether the state of the brake pedal is a breaking state or a non-breaking state through the brake pedal switch 80.

If the vehicle is in a stopped state and the brake pedal is in a braking state, as shown at time point 'a' of FIG. 3, the braking automatic processing unit 62 performs the solenoid valve assembly after the preset first waiting time (4 seconds, b). The auto hold function is provided to the vehicle in the stopped state through 110 and 120. Here, the auto hold function is a function of stopping the vehicle even if the driver does not position the brake pedal and the gear in the parking P.

Subsequently, when the state of the brake pedal is switched to the non-breaking state as in the time of 'c' of FIG. 3 while the vehicle is stopped through the auto hold function, the operation is changed as in the time of 'e' of FIG. 3. The unit 63 converts the engine 101 of the vehicle to the idle stop state after the second waiting time (3 seconds, d) at which the driver can move the vehicle at any time through the accelerator pedal.

At this time, the position of the gear is located in the drive (D) as shown in FIG. 3, but may be located in the neutral (N) or the park (P).

On the other hand, when the state of the brake pedal is switched to the braking state within the second waiting time d as shown at time 'f' in FIG. 4, the operation switching unit 63 maintains the engine 101 in the idle start state. If it is determined that the state of the brake pedal is switched to the non-breaking state as in the time 'g' of FIG. 4, the engine of the vehicle is switched to the idle stop state at the time 'h', which is after the second waiting time i. Let's do it.

5 is a diagram illustrating signal timings of respective components in a process of switching a vehicle engine in an idle stop state to an idle start state.

First, in order for the engine 101 of the vehicle to be changed from the idle stop state to the idle start state, the driver changes the gear to the neutral (N) or parking (P) position as shown at time point 'j' of FIG. 5.

Subsequently, when the driver performs the cranking operation k through the brake pedal as in the 'k' view of FIG. 5, the state detector 61 performs the brake pedal switch 80 at the 'l' view of FIG. 5. Detect cranking signal generation. Here, the crank signal is a signal provided when the driver presses the brake pedal for a predetermined time.

Then, the operation switching unit 63 drives the engine 101 through the engine driver 220 to switch the engine 101 in the idle stop state to the idle start state.

Subsequently, in order to move the vehicle in the idle start state, the driver changes the gear in the neutral (N) or parking (P) state to the drive (D) as in the 'm' time point of FIG. Likewise, the driver presses the accelerator pedal.

An ISS control method using the brake control state detection according to the present invention will be described with reference to FIG. 6.

First, the ECU 60 detects that the vehicle is in a stopped state through the vehicle speed sensor 70 and determines whether the brake pedal is in a breaking state through the brake pedal switch 80 (S1).

If the vehicle is in the stopped state and the brake pedal is in the braking state (YES) in the first step S1, the ECU 60 brakes the brake pedal even after the preset first waiting time (4 seconds). It is determined whether the state (S3).

If, in the third step S3, the brake pedal is still in the braking state after the first waiting time (YES), the ECU 60 controls the vehicle without the driver pressing the brake pedal through the solenoid valve assemblies 110 and 120. To be kept in a stopped state (S4).

Then, the ECU 60 stops the engine 101 of the vehicle after the second waiting time when the driver can move the vehicle at any time through the accelerator pedal when it is detected that the state of the brake pedal is switched from the braking state to the non-breaking state. (S5).

Hereinafter, detailed steps of the fifth step S5 will be described with reference to FIG. 7.

First, the ECU 60 determines whether the state of the brake pedal is switched from the braking state to the non-breaking state (S51).

If the state of the brake pedal is switched to the non-breaking state (YES) in the determination step (S51), the ECU 60 determines whether the state of the brake pedal is switched to the braking state during the second preset waiting time. It is determined (S53).

If it is detected in step 53 that the state of the brake pedal is switched to the braking state (YES), the ECU 60 idles the engine 101 of the vehicle while the state of the brake pedal maintains the braking state. It keeps in the state (S54).

On the other hand, when the state of the brake pedal is maintained in the non-breaking state (NO) in the 53rd step S53 (NO), the ECU 60 switches the engine 101 of the vehicle to the idle stop state (S55).

On the other hand, in order for the vehicle to be changed from the idle stop state to the idle start state, the driver changes the gear to a position that is neutral (N) or parking (P).

Then, when the driver performs the cranking operation through the brake pedal, the ECU 60 detects the cranking signal.

Then, the ECU 60 drives the engine 101 through the engine driver 220 to switch the engine 101 in the idle stop state to the idle start state.

Thereafter, in order to move the vehicle in the idle start state, the driver changes the gear in the neutral (N) or parking (P) state to the drive (D), and then the vehicle starts when the driver presses the accelerator pedal.

The ISS control apparatus using the brake control state detection according to another embodiment of the present invention includes a state sensing unit 310 and an operation switching unit 63 as shown in FIG. 8.

Hereinafter, the application of the ISS system of the vehicle without the auto hold function will be described with reference to FIG. 9.

First, the state detection unit 61 of the ECU 60 detects whether the vehicle in motion through the vehicle speed sensor 70 is in a stopped state a.

In addition, the state detection unit 61 of the ECU 60 detects whether the state of the brake pedal is a breaking state through the brake pedal switch 80.

If the vehicle is in a stopped state and the brake pedal is in a braking state, as in the time point 'a' of FIG. 9, the driver of the vehicle that does not have the autohold function may foot on the brake pedal in FIG. 9. Change the gear to the neutral (N) or parking (P) position or use the hand brake to keep the vehicle stationary, as at this point.

Subsequently, when the operation switching unit 63 of the ECU 60 detects that the state of the brake pedal is switched to the non-breaking state while the vehicle is stopped, a second standby for allowing the driver to move the vehicle at any time through the accelerator pedal. If the state of the brake pedal after the time (3 seconds, d) is in the non-breaking state, the engine 101 of the vehicle is stopped and converted to the idle stop state as at the point 'e' in FIG. 9. At this time, the operation switching unit 63 operates regardless of the position of the gear or the operation of the hand brake.

On the other hand, if the state of the brake pedal is switched to the braking state within the second waiting time S3, the operation switching unit 63 of the ECU 60 maintains the engine in the idle start state and then the state of the brake pedal is non- If it is determined that the state is to be switched to the breaking state, the engine 101 is switched to the idle stop state again after the second waiting time.

Although the foregoing detailed description has shown, described, and mentioned the basic novel features of the invention as applied to the various embodiments, various omissions, substitutions, and changes in the form and details of the illustrated system may be made without departing from the intention of the invention. It will be appreciated that changes may be made by those skilled in the art.

60: ECU 61: status detector
62: braking automatic processing unit 63: operation switching unit
70: vehicle speed sensor 80: brake pedal switch
90: accelerator pedal 101: engine
110, 120: solenoid valve assembly 220: engine drive unit

Claims (7)

A state detection unit for detecting that the state of the brake pedal is a braking state through a brake pedal switch detecting a state of the brake pedal while detecting that the vehicle is in a stopped state through a vehicle speed sensor detecting a speed of the vehicle;
A braking automatic processor for controlling the solenoid valve assembly to maintain the vehicle in a stopped state without the driver pressing the brake pedal after the preset first waiting time when the vehicle is in the stopped state and the brake pedal is in the braking state; And
If it is determined that the state of the brake pedal is switched to the non-breaking state after the first waiting time, the brake control state detection includes an operation switching unit for switching the engine of the vehicle to the idle stop state after the second waiting time. ISS control unit.
A state detection unit for detecting that the state of the brake pedal is a braking state through a brake pedal switch detecting a state of the brake pedal while detecting that the vehicle is in a stopped state through a vehicle speed sensor detecting a speed of the vehicle; And
After the vehicle is stopped and the brake pedal is switched to the braking state through the detection unit, when it is determined that the brake pedal is to be switched to the non-breaking state, the engine of the vehicle is set to the idle stop state after the second preset waiting time. ISS control device using a brake control state detection including a motion switching unit for switching.
The method of claim 2,
The operation switching unit,
When the starvation is in the neutral (N) or park (P) state, the ISS control device using the brake control state detection, characterized in that for switching the engine of the vehicle to the idle stop after the second waiting time.
The method according to claim 1 or 3,
The operation switching unit,
When the state of the brake pedal is a braking state during the second waiting time, the ISS control device using the brake control state detection, characterized in that the idle start state of the vehicle engine is maintained while the braking state is maintained.
A first step in which the ECU detects that the vehicle is stationary through the vehicle speed sensor and determines whether the brake pedal is in a braking state through the brake pedal switch;
If it is determined in the first step that the vehicle is in a stopped state and the brake pedal is in the breaking state, the ECU determines whether the brake pedal is in the breaking state even after the first waiting time; And
If it is determined in the second step that the brake pedal is in the braking state after the first waiting time, the ECU detects the preset second waiting time when the brake pedal is switched from the braking state to the non-breaking state. And a third step of switching the engine of the vehicle to an idle stop state.
6. The method of claim 5,
The ECU further includes controlling the solenoid valve assembly to switch the state of the brake pedal to the non-brake state after the first waiting time to maintain the vehicle in a stopped state without the driver pressing the brake pedal. ISS control method using.
The method of claim 6,
The third step of switching the engine of the vehicle to the idle stop state after the preset second waiting time may be performed.
Determining, by the ECU, whether the state of the brake pedal is switched from the braking state to the non-breaking state;
If it is determined that the state of the brake pedal is to be switched to the non-breaking state in the step of determining whether the state of the brake pedal is to be switched from the braking state to the non-breaking state, the ECU determines the braking of the second waiting time. Determining whether the state of the pedal is switched to the breaking state; And
If it is determined that the state of the brake pedal is to be switched to the braking state in the step of determining whether the state of the brake pedal is switched to the braking state during the second waiting time, the ECU maintains the state of the brake pedal to the braking state. While the engine of the vehicle is kept in the idle start state, the second step determines whether the state of the brake pedal is switched to the braking state during the waiting time, and the state of the brake pedal is switched to the braking state And determining that the vehicle is not supported, switching the engine of the vehicle to an idle stop state.
KR1020100081177A 2010-08-23 2010-08-23 Idle stop and start system and control method for using brake control status sensing KR20120018403A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107215289A (en) * 2016-03-22 2017-09-29 迪尔公司 The system and method determined for idle condition
CN114572168A (en) * 2021-06-03 2022-06-03 长城汽车股份有限公司 Vehicle control method and device and vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107215289A (en) * 2016-03-22 2017-09-29 迪尔公司 The system and method determined for idle condition
CN107215289B (en) * 2016-03-22 2021-09-21 迪尔公司 System and method for idle state determination
CN114572168A (en) * 2021-06-03 2022-06-03 长城汽车股份有限公司 Vehicle control method and device and vehicle
CN114572168B (en) * 2021-06-03 2024-03-01 长城汽车股份有限公司 Vehicle control method and device and vehicle

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