KR20210003349A - Advancing Launch Control Method and Vehicle Launch Control System Thereof - Google Patents

Abstract

The present invention relates to an advanced launch control method applied to a vehicle launch control system (1). According to the present invention, a launch control class (L/C Class), determining EPB/ESC cooperative control for braking a vehicle when confirming an outside temperature and a slope through an engine controller (500) and set RPM differentiation for differentiating an engine revolutions-per-minute (RPM) increase, is carried out between launch control ready (L/C Ready) allowing quick vehicle acceleration and launch control active (L/C Active) starting quick vehicle acceleration. Therefore, the method is capable of preventing an accident caused by a vehicle moving on a slope as well as enhancing driver convenience for ordinary drivers, and in particular, differentiating an engine RPM increase for quick acceleration depending on whether a vehicle is ascending or descending and an outside temperature, thereby increasing the acceleration of the vehicle while reducing pressure on the engine.

Description

Advancing Launch Control Method and Vehicle Launch Control System Thereof

The present invention relates to a vehicle launch control, and in particular, to a vehicle launch control system that implements advanced launch control control in which problems of vehicle slippage, road surface slip, and engine load are solved during rapid start by reflecting road slope and outside air temperature. will be.

In general, launch control applied to a vehicle is a technology that quickly starts a vehicle from a standstill.

For example, the launch control satisfies the conditions of safety conditions (e.g., belt, door, hood, other system errors, etc.) and current vehicle condition conditions (e.g., coolant temperature, transmission oil temperature, exhaust gas temperature, etc.) when the vehicle is stopped. Is set to Launch Control Ready (L/C Ready), and the vehicle start condition (e.g., driver's pedal and gear operation) is set to Launch Control Active (L/C Active) in the state of the Launch Control Ready (L/C Ready). Is performed by

From this, the above launch control specializes in how much to increase the engine revolution, which is difficult to understand unless you are a driving expert, at what speed the clutch pedal should be attached, or how many times you can start fast continuously. By not requiring knowledge from the general driver, the general driver also assists the general driver not to fall into an unreasonable quick start attempt that can cause an excessive burden on the vehicle or increase the risk of an accident.

Therefore, the technology of the launch control can increase the fun-to-drive even for the general driver by allowing the general driver to start the vehicle quickly without acquiring the skill of a professional driver.

International Publication Patent WO 2015-121811 (2015.08.20)

However, the launch control has the following improvements due to the logic limitation of launch control active (L/C Active).

As an example of limiting the launch control active logic, a driver's operation for quick start may be different between an automatic transmission vehicle and a manual transmission vehicle. Hereinafter, “->” indicates a flow for the operation sequence.

For example, in an automatic transmission vehicle, the driver must operate in the order of D-stage fastening -> brake stepping -> accelerator pedal fully stepped -> brake release, in order to make a quick start through Launch Control Active. Therefore, the automatic transmission vehicle can perform launch control even on a slope without pushing the vehicle.

On the other hand, in a manual transmission vehicle, the driver must engage in 1/2 gear -> fully depress the clutch pedal -> fully depress the accelerator pedal -> release the clutch pedal in the order of rapid start through Launch Control Active. This can be done. Therefore, in the manual transmission vehicle, launch control can be performed only when the vehicle is prevented from being pushed on the clutch pedal fully on the slope.

As described above, in the case of a manual transmission vehicle, even if the clutch pedal is fully pressed on a slope, an additional side brake operation capable of preventing the vehicle from being pushed is required, and thus driving skill is not considered.

For this reason, the launch control can increase the risk of accidents caused by the general driver who cannot prevent the vehicle from being pushed through the side brake operation, and even if there is no risk of accidents, the speed of the vehicle due to the push is generated, so that the launch control is ready. Since it cannot enter (L/C Ready), it is inevitable that rapid launch is impossible.

In addition, as another example of limiting the launch control active logic, a constant engine RPM increase value is always used regardless of the starting condition of the vehicle.

For this reason, the launch control does not reflect the engine load that changes due to changes in the outside temperature and whether the lamp/steel plate when starting the vehicle, and this allows the engine load to be maintained high regardless of the classification of an automatic transmission vehicle or a manual transmission vehicle when starting a fast vehicle.

Therefore, the launch control needs to improve the transmission classification logic that has the slope limit condition of the manual transmission vehicle and the engine speed fixing logic that increases the engine load.

Accordingly, the present invention in consideration of the above points increases the driver's convenience and the risk of a vehicle slip accident by blocking the vehicle slipping so that the progression from the launch control Ready to Active continues when the vehicle starts on a slope. The purpose is to provide an advanced launch control control method and vehicle launch control system that can reduce the engine burden while increasing the vehicle launch feeling by changing the engine RPM increase for rapid start-up and whether the vehicle is back/steel plate or not and the outside temperature. .

In the advanced launch control control method of the present invention for achieving the above object, the inclination of the road and the outside temperature are adjusted by the engine controller between the launch control ready allowing fast vehicle start and the launch control active starting fast vehicle start. When it is confirmed, EPB/ESC cooperative control in which vehicle stop by parking braking is replaced by brake fluid pressure and launch control class that determines set RPM differentiation in which engine RPM increase by starting operation is different are included.

In a preferred embodiment, the slope is a slope of a road compared to a flat land, and the outside temperature is divided into room temperature and low temperature due to an effect on the intake air flow temperature supplied to the engine.

In a preferred embodiment, the inclination is confirmed by a tilt detection value of a tilt sensor or a tilt prediction value according to a vehicle speed condition.

As a preferred embodiment, the EPB/ESC cooperative control is implemented by forming the brake fluid pressure of the ESC system for the EPB system forming the parking brake, and the ESC system is the brake required on the slope when the parking brake is released from the EPB system. Hydraulic pressure is generated in the front/rear wheel inclined parking braking force respectively to maintain the vehicle stop.

In a preferred embodiment, the set RPM differentiation is changed to a slope set RPM(b) by using the set RPM(a) for the flat land separated by the slope as a default value, and the set RPM for the room temperature divided by the outside temperature ( It is changed to low temperature setting RPM (b) with a) as the default value. The ramp setting RPM (b) separates a steel plate road and a slope road, and is lower than the set RPM (a) in the steel plate road, while being higher than the set RPM (a) in the slope road. The low temperature set RPM (b) is lower than the set RPM (a).

In a preferred embodiment, the launch control active is switched to the manual transmission launch control active when a manual transmission is applied, and the manual transmission launch control active starts on a flat ground, starting on a slope accompanied by the EPB/ESC cooperative control, starting at room temperature, starting at low temperatures. The vehicle starts with one or more of them.

As an embodiment of a preferred manual transmission launch control active, the flat ground start and the room temperature start have a set RPM (a) that increases the engine RPM, while the slope start and the low temperature start have a difference from the set RPM (a). The engine RPM is increased by RPM(b), and the engine RPM is increased when the launch control ready is satisfied. The set RPM(b) is set lower than the set RPM(a) for the steel plate road condition of the ramp oscillation, while it is set higher than the set RPM(a) for the slope road condition, and the set for the low temperature oscillation It is set lower than RPM(a).

In a preferred embodiment, the launch control active is switched to the automatic transmission launch control active when an automatic transmission is applied, and the automatic transmission launch control active is the vehicle starting with one or more of starting on a flat ground, starting on a slope, starting at room temperature, and starting at low temperatures.

As an embodiment of a preferred automatic transmission launch control active, the flat ground start and the room temperature start are set to have a difference in engine RPM (a) while the engine RPM rises at a set RPM(a), whereas the ramp start and the low temperature start have a difference from the set RPM(a). The engine RPM is increased by RPM(b), and the engine RPM is increased when the launch control ready is satisfied. The set RPM(b) is set lower than the set RPM(a) for the steel plate road condition of the ramp oscillation, while it is set higher than the set RPM(a) for the slope road condition, and the set for the low temperature oscillation It is set lower than RPM(a).

In addition, the vehicle launch control system of the present invention to achieve the above object is a launch control ready that allows rapid vehicle start, and EPB/ESC cooperation in which vehicle stop by parking braking at a confirmed slope and outside temperature is replaced by brake fluid pressure. A launch control class for determining differentiation of a set RPM in which an increase in engine RPM by a control and starting operation is changed, and an engine controller performing launch control activation for starting a fast vehicle start; And a braking system comprising an EPB system for performing the parking braking and an ESC system for performing the EPB/ESC cooperative control by forming the brake hydraulic pressure.

In a preferred embodiment, the slope is checked by a detection value of a slope sensor or a slope predicted value according to a vehicle speed condition, and the outside temperature is checked by a detection value of the outside temperature sensor.

In a preferred embodiment, the engine controller connects the air conditioner controller and the gradient controller through CAN communication, and the engine controller sets RPM (a) and the set according to the outdoor temperature transmitted from the air conditioner controller and the slope transmitted from the gradient controller. The engine RPM increase is different by dividing the set RPM (a) as a default value and is divided into a set RPM (b) that changes the engine load by being higher or lower.

In a preferred embodiment, the launch control active (L/C Active) is a vehicle starting at one or more of starting on a flat ground when a manual transmission is applied, starting on a slope accompanied by the EPB/ESC cooperative control, starting at room temperature, and starting at low temperatures, When the automatic transmission is applied, the vehicle starts with one or more of starting on a flat ground, starting on a slope, starting at room temperature, or starting at low temperatures. On the other hand, the engine RPM increase through the low-temperature oscillation is made lower than the engine RPM increase in the room-temperature oscillation, and the increase in the engine RPM through the ramp start with the EPB/ESC cooperative control and the ramp start increases the engine RPM of the flat ground start. It is made lower or higher.

The advanced launch control control applied to the vehicle launch control system of the present invention implements the following actions and effects by extending the launch control function.

First, the launch control stably performs the operation for the rapid start of the vehicle even on a slope, so that a manual transmission vehicle with the risk of vehicle being pushed through the clutch pedal operation provides higher driving convenience and fun-to-drive to general drivers. Can provide. Second, by linking the operation of the launch control on the slope to the EPB (Electronic Parking Brake) / ESC (Electronic Stability Control) of the vehicle, the risk of vehicle push accident can be eliminated by stabilizing the vehicle push prevention. Third, the launch control can change the engine RPM differently depending on whether the vehicle has a back/steel plate and the outside temperature, so that the manual transmission vehicle and the automatic transmission vehicle can reduce the engine burden while increasing the vehicle start feeling. Fourth, the convenience of launch control can be provided to all vehicles and general drivers regardless of the difference in transmission type and driving skill.

1 to 3 are flowcharts of a method for controlling an advanced launch control according to the present invention, and FIG. 4 is an example of applying a launch control system in which the launch control function expansion according to the present invention is implemented to a vehicle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying illustrative drawings, and such embodiments are described herein as examples because those of ordinary skill in the art may be implemented in various different forms. It is not limited to this embodiment.

1 to 3, the advanced launch control control method is to enter the launch control ready (L/C Ready) (S10 to S30) without distinction of the transmission, and then launch control class (L/C Class) (S40 to S80). After separating the fast start condition with L/C Active, the manual transmission launch control active (L/C Active) (S90-1~S90-4) or the automatic transmission launch control active (L/C Active) By categorizing into (S100-1~S100-4) and entering, it reacts to vehicle operation so that the vehicle starts quickly.

For example, the launch control class (L/C Class) (S40 to S80) can change the RPM of the engine required for rapid launch at the outside temperature along with the launch of the back/steel plate of the vehicle in the launch control ready state, and the manual transmission Launch control active (L/C Active) (S90-1~S90-4) prevents vehicle slippage due to inexperienced driving of general drivers who are inexperienced in clutch operation when starting on a slope, with EPB (Electronic Parking Brake) and ESC (Electronic Stability Control). It is possible to provide quick start by reducing engine load from back/steel plate start while preventing it with cooperative control, and the automatic transmission launch control active (L/C Active) (S100-1~S100-4) It can provide quick start with reduced engine load.

In particular, the EPB/ESC cooperative control is implemented in a manner in which the brake hydraulic pressure by the brake fluid pressure of the ESC replaces the release of the parking braking force of the EPB, and the vehicle is stopped on a slope.

From this, the advanced launch control control method has a risk of an accident due to pushing the vehicle when the clutch pedal is fully depressed for quick start on a slope. Even if there is no risk, the launch control is impossible (vehicle speed> speed under a specific condition). Existing launch control, which did not allow quick start, is resolved, and the engine RPM maintained in the state of launch control ready (L/C Ready) is used as one value regardless of the fast start condition of the vehicle. It implements features that reduce the engine burden while improving the start feeling that was not possible with the control.

Meanwhile, in FIG. 4, the launch control system 10 is an example of the vehicle 1, and the launch control system 10 includes a vehicle sensor, a controller 300, 400, 500, a power transformer and a braking system 700, 800.

For example, the vehicle sensor is an outside temperature sensor 100 for detecting an outside temperature required in the launch control class (L/C Class) (S40 to S80) and a slope sensor 200 for detecting a slope of a road. Particularly, the inclination sensor 200 includes a Global Positioning System (GPS), and the GPS information provides a climbing road/steel track of a place and a road.

In addition, the vehicle sensor is not shown, but belt/door/hood/other system error detection sensor, coolant/transmission oil/exhaust gas temperature sensor, vehicle speed sensor, brake/accelerator/clutch pedal sensor, engine speed sensor, coolant sensor, It includes a brake pressure sensor and the like as a vehicle basic sensor.

For example, the controllers 300, 400, and 500 include an air conditioner controller 300, a gradient controller 400, and an engine controller 500, and transmit mutual information through CAN (Controller Area Network) communication. The air conditioner controller 300 reads and processes the detected value of the outside temperature of the outside temperature sensor 100. The tilt controller 400 reads and processes the detected tilt value of the tilt sensor 200. The engine controller 500 selects the set RPM information provided by the air conditioner controller 300 and the inclination controller 400 as one value, and reads the detected value of the vehicle basic sensor to check the operation state of the engine 600 . In particular, the engine controller 500 includes a logic (or program) for generating a slope predicted value by checking a vehicle speed condition for a vehicle to which the slope sensor 200 and the slope controller 400 are not applied, and the slope predicted value It replaces the information of the inclination controller 400. In this case, the vehicle speed condition may be a situation occurring in driving on a slope, such as a change in vehicle speed compared to the engine speed.

Furthermore, the engine controller 500 is a launch control ready (L/C Ready), a launch control class (L/C Class)/ a manual transmission launch control active (L/C Active)/ an automatic transmission launch control active (L/C Active). The logic for performing) is programmed and has a memory, and operates as a central processing unit linked to the memory to process the logic. In addition, the engine controller 500 includes a launch control map 500-1, and the launch control map 500-1 matches the detected value of the vehicle sensor to the launch control condition, so that the engine controller 500 is launched. Enter and execute Control Ready (L/C Ready), Launch Control Class (L/C Class) and Launch Control Active (L/C Active). Therefore, the engine controller 500 sets the RPM by receiving the sensor value or the predicted slope value identified as the vehicle speed condition and actually increases the RPM.

In particular, in the case of a manual transmission, the engine controller 500 starts the vehicle at one or more of starting on a slope, starting at room temperature, and starting at low temperature, and in the case of an automatic transmission, the vehicle starts at one or more of starting on a flat ground, starting on a slope, starting at room temperature, and starting at low temperature Carry out a rash.

For example, the power transformer includes an engine 600 and a transmission (not shown). The engine 600 raises the engine RPM with the set RPM (a) or the set RPM (b) of the engine controller 500 so that rapid start is achieved. The transmission is a manual transmission or an automatic transmission.

For example, the braking systems 700 and 800 include an EPB (Electronic Parking Brake) system 700 and an ESC (Electronic Stability Control) system 800. The EPB system 700 establishes a parking state of the vehicle 1 by holding the drum brake (or caliper brake) of the wheel by operating a switch. The ESC system 800 performs vehicle braking by distributing braking hydraulic pressure to wheel cylinders of the front and rear wheels under the control of an ESC controller (not shown).

Therefore, the ESC system 800 is a general ESC system or an ESC controller linked to the engine controller 500, and the EPB/ESC required in the manual transmission launch control active (L/C Active) (S90-1 to S90-4). There is a difference in implementing cooperative control.

Hereinafter, the advanced launch control control method of FIGS. 1 to 3 will be described in detail with reference to FIG. 4. In this case, the controlling body is the air conditioner controller 300, the inclination controller 400, and the engine controller 500, while the engine controller 500 operates as a host controller, and the control target is an engine whose engine RPM is increased by the engine controller 500. It is a vehicle system including 600.

First, referring to FIG. 1, the engine controller 500 performs a launch control ready determination control (S10 to S30), and the launch control ready determination control (S10 to S30) is a launch according to a key ON of S10. It is divided into a controller activation step, a slope check step of S10-1, a launch control ready condition determination step of S20, and a launch control ready entry step of S30.

Referring to FIG. 4, when the engine controller 500 is activated by the vehicle battery power supply along with the start of the engine 600 by key-on, the belt/door/hood/other system errors detected by the vehicle basic sensor, coolant/transmission oil. Launches vehicle speed information among exhaust gas temperature, vehicle speed, brake/accelerator/clutch pedal opening, engine speed, coolant temperature, and braking pressure, and belt/door/hood/other system error information and coolant/transmission oil/exhaust gas temperature information It is detected as a control factor.

Therefore, the inclination check (S10-1) checks the inclination detection value of the inclination sensor 200 provided by the inclination controller 400 through detection of the inclination value in S11, or the engine controller 500 in S12 has its own logic or Through the program, check the predicted slope value determined by the vehicle speed condition.

In addition, the launch control ready condition determination (S20) is performed in a vehicle stop state confirmation step S21, a safety condition satisfaction determination step S22, and a vehicle condition satisfaction determination step S23.

For example, the vehicle stop status check (S21) uses vehicle speed information, and by checking the vehicle stop, the vehicle is recognized as a stop status of the vehicle 1 due to the operation of the EPB system 700 and the ESC system 800, and the safety of S22. Proceed to the step of determining condition satisfaction.

For example, the safety condition satisfaction determination (S22) uses the belt/door/hood/other system error information, and checks the belt worn, door closed, hood closed, and other systems normal. The vehicle condition satisfaction determination (S23) uses cooling water/transmission oil/exhaust gas temperature information, and checks the cooling water temperature, transmission oil temperature, and exhaust gas temperature.

As a result, the engine controller 500 returns to the vehicle stop state confirmation step of S21 by making the detection of the belt/door/hood/other system error unsatisfied with the safety condition, while satisfying the vehicle condition condition of S23 by satisfying the safety condition. Switch to the judgment stage. In addition, the engine controller 500 returns to the vehicle stop status confirmation step of S21 by making the non-detection of the coolant/transmission oil/exhaust gas temperature unsatisfied with the vehicle condition condition, while the detection is satisfied with the vehicle condition condition and enters the launch control ready in S30. Switch to the stage.

For example, the launch control ready (S30) means an activation state of program logic.

Then, the engine controller 500 performs a launch control class (L/C Class) (S40 to S80), and the launch control class (L/C Class) (S40 to S80) is checked for external conditions of S40, S50 to It is divided into the S80 engine RPM differential selection stage.

Referring to FIG. 4, the air conditioner controller 300 reads the detection of the outside temperature of the outside temperature sensor 100, and divides the outside temperature into a set RPM (a) temperature and a set RPM (b) temperature, thereby increasing the engine RPM for rapid start-up. Makes the value different. In addition, the inclination controller 400 reads the inclination detection value of the inclination sensor 200 and divides the inclination by setting RPM (a) inclination and setting RPM (b) inclination, so that the engine RPM increase value for quick start can have a difference. To be. In this case, the set RPM (a) is basically the set engine RPM, and the set RPM (b) is the engine RPM changed using sensor and GPS information.

In this case, the set RPM(a) temperature is defined as room temperature set RPM(a), and the set RPM(b) temperature is defined as low temperature set RPM(b), and the set RPM(a) slope is set as slope RPM(a). The set RPM (b) slope may be defined as a slope set RPM (b).

Therefore, the external condition check (S40) is divided into a gradient check step of S41 and an outside temperature check step of S42. In this case, the road inclination for checking the inclination (S41) is set based on 0° in consideration of a flat ground condition in which the vehicle does not slip when the brake is released. The outside air temperature for checking the outside air temperature (S42) is set in relation to the intake air temperature related to the output of the engine 600, but generally low and high outside air temperatures are set based on about 10°C.

From this, the engine RPM discrimination selection step (S50 to S80) is divided into a set RPM (a) in which the slope of S50 is not reflected through the slope check (S41) and a set RPM (b) in which the slope of S60 is reflected, and check the outside temperature (S42). It is divided into a set RPM (a) that does not reflect the outside temperature of S70 and a set RPM (b) that reflects the outside temperature of S80.

After that, the engine controller 500 changes the launch control active (L/C Active) to the manual transmission launch control active (L/C Active) (S90-1 to S90-4) or the automatic transmission launch control active (L/C Active) ( It is divided into S100-1~S100-4).

4, the engine controller 500 reads the set RPM(a) temperature of the air conditioner controller 300 through CAN communication to determine the set RPM(a) or reads the set RPM(b) temperature and reads the set RPM( b). In this case, the set RPM(a) is the initial RPM set when entering the launch control ready state like the existing engine RPM, and when using the cruise +/- button, the driver can increase the set RPM(a) at will Can be lowered. On the other hand, since the set RPM (b) reflects a low outside temperature, the engine RPM is set to be lower than the set RPM (a) reflecting a relatively high outside temperature. Therefore, the set RPM (b) can prevent the risk of an accident caused by tire slip on a road surface in which high engine RPM may occur in a road surface condition with a high possibility of slippery due to low outside air temperature.

In addition, the engine controller 500 reads the set RPM(a) inclination of the inclination controller 400 through CAN communication to determine the set RPM(a) or reads the set RPM(b) inclination to determine the set RPM(b). do. In this case, the set RPM(a) is the initial RPM set when entering the launch control ready state like the existing engine RPM, and when using the cruise +/- button, the driver can increase the set RPM(a) at will Can be lowered. On the other hand, the set RPM (b) reflects the slope, unlike the set RPM (a) that reflects the flat ground, so when the steel plate is started, the engine RPM is lower than the set RPM(a). It is set by increasing the RPM.

Therefore, the set RPM (b) can reduce the load on the engine with a starting performance similar to that of the flat ground even with an engine RPM lower than that of the flat ground when starting the steel plate. Can be obtained.

In this way, the engine controller 500 uses the information provided by the air conditioner controller 300 and the inclination controller 400 to increase or decrease the engine RPM compared to the basic engine RPM set RPM(a) in the launch control ready state. ), the driver's convenience is improved, the starting feeling is improved, and the load on the vehicle is reduced.

Referring to FIG. 2, the manual transmission launch control active (L/C Active) (S90-1 to S90-4) is a level starting step of S90-1 and a slope starting step of S90-2 when checking the manual transmission vehicle of S90. , The room temperature oscillation step of S90-3, the low temperature oscillation step of S90-4 is performed in any one of.

For example, the flat start (S90-1) is performed in a step of maintaining the set RPM (a) of S91-1, a clutch operation confirmation step of S92-1, and a vehicle start permission step of S93-1. Therefore, in the flat ground start (S90-1), the driver releases the clutch while the clutch is pressed in accordance with the launch control active characteristics and the engine RPM is increased to the set RPM (a). To be able to do it.

For example, the ramp start (S90-2) is a step of performing EPB/ESC cooperative control while maintaining the set RPM (b) of S91-2, a clutch operation confirmation step of S92-2, and a vehicle start permission step of S93-2. Is performed as

Therefore, in the ramp start (S90-2), the ESC system 800 replaces the parking braking force of the EPB system 700 to maintain the vehicle 1 in a stopped state, and the clutch is pressed in accordance with the launch control active characteristics to set RPM. As shown in (b), the operation of the driver to release the clutch while the engine RPM is raised allows the manual transmission vehicle to perform quick start while reducing the engine load on the steel plate compared to the slope.

In this case, in the EPB/ESC cooperative control, the ESC system 800 generates brake fluid pressure for the front/rear inclined parking braking force required on the slope instead of releasing the parking braking force of the EPB system 700, so that the vehicle 1 is At the same time, it is possible to maintain a stationary state without slipping even without parking braking force.

For example, the normal temperature start (S90-3) is performed as a step of maintaining the set RPM (a) of S91-3, a clutch operation confirmation step of S92-3, and a vehicle start permission step of S93-3. Therefore, the normal temperature start (S90-3) is the operation that the driver releases the clutch while the clutch is pressed in accordance with the launch control active characteristics and the engine RPM is increased to the set RPM (a). It is possible to perform a rapid rash at room temperature that does not affect the rash.

For example, the low-temperature start (S90-4) is performed in a step of maintaining the set RPM (b) of S91-4, a clutch operation confirmation step of S92-4, and a vehicle start permission step of S93-4. Therefore, the low-temperature start (S90-4) is the operation that the driver releases the clutch while the clutch is pressed in accordance with the launch control active characteristics and the engine RPM is increased to the set RPM (b). In addition to reducing the engine load in the road, it is possible to perform quick start while preventing tire slip.

3, the automatic transmission launch control active (L/C Active) (S100-1 to S100-4) is a level starting step of S100-1 and a slope starting step of S100-2 for the automatic transmission vehicle of S100. , It is performed in any one of the room temperature oscillation step of S100-3, and the low temperature oscillation step of S100-4.

For example, the flat ground start (S100-1) is performed as a step of maintaining the set RPM (a) of S101-1 and a step of allowing vehicle start of S102-1. Therefore, when the launch control ready state is satisfied in the flat ground start (S100-1), it is possible to provide a quick start on the flat ground by the launch control active in accordance with the start operation of raising the set RPM (a) and releasing the brake.

For example, the start of the slope (S100-2) is performed as a step of maintaining the set RPM (b) of S101-2 and a step of allowing vehicle start of S102-2. Therefore, the increase of the engine RPM in the ramp start (S100-2) is a quick start while reducing the engine load on the steel plate compared to the grade by performing the launch control active to increase the set RPM (b) according to the driver's starting operation of the automatic transmission vehicle. Can provide.

For example, the normal temperature start (S100-3) is performed as a step of maintaining the set RPM (a) of S101-3 and a step of allowing vehicle start of S102-3. Therefore, when the launch control ready state is satisfied in the above room temperature start (S100-3), the launch control is activated according to the start operation of increasing the set RPM (a) and releasing the brake, causing a rapid start at room temperature that does not affect the temperature of the intake air flow. Can provide.

For example, the low-temperature start (S100-4) is performed as a step of maintaining the set RPM (b) of S101-4 and a step of allowing vehicle start of S102-4. Therefore, when the launch control ready state is satisfied in the low-temperature start (S100-4), the engine load is reduced at a relatively low outside temperature by increasing the set RPM (b) and activating the launch control according to the start operation to release the brake. It is possible to provide a quick start while preventing tire slip.

As described above, the advanced launch control control method applied to the vehicle launch control system 1 according to the present embodiment is an EPB/ESC cooperative control and engine that performs vehicle braking when checking the slope and outside temperature by the engine controller 500. Setting that changes RPM (Revolution Per Minute) increase Launch control class (L/C Class), where RPM differentiation is determined, allows rapid vehicle start, Launch Control Ready (L/C Ready) and launch control for fast vehicle start By performing it between the active (L/C Active), it prevents the vehicle from being pushed on the slope and improves the driver's convenience for the general driver and improves the driver's convenience for the general driver. By varying accordingly, it is possible to reduce the engine burden while increasing the feeling of starting the vehicle.

1: vehicle 10: launch control system
100: outside temperature sensor 200: inclination sensor
300: air conditioner controller
400: gradient controller 500: engine controller
500-1: Launch Control Map
600: engine 700: EPB (Electronic Parking Brake) system
800: Electronic Stability Control (ESC) system

Claims (22)

EPB/ where the vehicle stop by parking braking is replaced by brake fluid pressure when the inclination of the road and the outside temperature are checked by the engine controller between the launch control ready allowing fast vehicle start and the launch control active starting fast vehicle starting. Launch control class that determines the differentiation of the set RPM in which the increase of engine RPM (Revolution Per Minute) is changed by ESC cooperative control and start operation;
Advanced launch control control method, characterized in that it includes.
The method according to claim 1, wherein the slope is a slope of a road compared to a flat land.
The method according to claim 2, wherein the inclination is confirmed by a gradient detection value of a gradient sensor or a gradient prediction value according to a vehicle speed condition.
The method of claim 1, wherein the outside air temperature is divided into room temperature and low temperature due to an effect on the intake air flow rate temperature supplied to the engine.
The advanced launch control control according to claim 1, wherein the EPB/ESC cooperative control is implemented by forming the brake fluid pressure of an Electronic Stability Control (ESC) system for an EPB (Electronic Parking Brake) system that forms the parking brake. Way.
The advanced launch control control according to claim 5, wherein the ESC system maintains the vehicle stop by generating the brake hydraulic pressure required on the slope to the front/rear inclined parking braking force respectively when the parking brake of the EPB system is released. Way.
The method according to claim 1, wherein the differentiation of the set RPM is changed to a set RPM(a) for a flat land separated by the slope as a default value, and a set RPM for a room temperature divided by the outside temperature Advanced launch control control method, characterized in that the low temperature setting RPM (b) is changed with a) as a default value.
The method according to claim 7, wherein the slope setting RPM (b) separates the steel plate road and the slope road, and is lower than the set RPM (a) in the steel plate road, while being higher than the set RPM (a) in the slope road. Advanced launch control control method.
The method of claim 7, wherein the low temperature setting RPM (b) is lower than the setting RPM (a).
The method according to claim 1, wherein the launch control active is switched to a manual transmission launch control active when a manual transmission is applied, and the manual transmission launch control active is started on a flat ground, starting on a slope accompanied by the EPB/ESC cooperative control, starting at room temperature, starting at low temperatures. Advanced launch control control method, characterized in that the vehicle is started with one or more of.
The engine according to claim 10, wherein the flat ground oscillation and the room temperature oscillation are performed at a set RPM (a), while the engine RPM is increased, while the ramp oscillation and the low temperature oscillation are set at a set RPM (b) having a difference from the set RPM An advanced launch control control method, characterized in that the RPM is increased, and the engine RPM is increased when the launch control ready is satisfied.
The method according to claim 11, wherein the set RPM (b) is set lower than the set RPM (a) for the steel plate road condition of the slope oscillation, while the set RPM (b) is set higher than the set RPM (a) for the slope condition, and the low temperature Advanced launch control control method, characterized in that set lower than the set RPM (a) for oscillation.
The method according to claim 1, wherein the launch control active is converted to an automatic transmission launch control active when an automatic transmission is applied, and the automatic transmission launch control active is the vehicle starting in one or more of starting on a flat ground, starting on a slope, starting at room temperature, and starting at low temperatures Advanced launch control control method characterized by.
The engine according to claim 13, wherein the flat ground and the room temperature oscillation are performed at a set RPM (a) to increase the engine RPM, while the slope oscillation and the low temperature oscillation are at a set RPM (b) having a difference from the set RPM (a). An advanced launch control control method, characterized in that the RPM is increased, and the engine RPM is increased when the launch control ready is satisfied.
The method according to claim 14, wherein the set RPM (b) is set lower than the set RPM (a) for the steel plate road condition of the ramp oscillation, while the set RPM (b) is set higher than the set RPM (a) for the slope condition, and the low temperature Advanced launch control control method, characterized in that set lower than the set RPM (a) for oscillation.
Launch control ready to allow fast vehicle start, EPB/ESC cooperative control in which vehicle stop by parking braking is replaced by brake fluid pressure at a confirmed slope and outside temperature, and engine RPM (revolution per minute) increase by starting operation is set to change A launch control class for determining RPM differentiation, and an engine controller performing launch control activation for starting a fast vehicle start;
A braking system comprising an EPB (Electronic Parking Brake) system for performing the parking braking, and an ESC (Electronic Stability Control) system for performing the EPB/ESC cooperative control by forming the brake hydraulic pressure;
Vehicle launch control system, characterized in that included.
The vehicle launch control system according to claim 16, wherein the slope is checked by a detection value of a slope sensor, and the outside temperature is checked by a detection value of the outside temperature sensor.
The vehicle launch control system according to claim 16, wherein the check of the slope is performed by a predicted slope value according to a vehicle speed condition.
The method according to claim 16, wherein the engine controller connects the air conditioner controller and the gradient controller through CAN (Controller Area Network) communication, and the engine controller is set RPM according to the outdoor temperature transmitted from the air conditioner controller and the slope transmitted from the gradient controller. Vehicle launch control system, characterized in that the engine RPM increase by dividing (a) and the set RPM (b).
The vehicle launch control system according to claim 19, wherein the set RPM (b) is increased or lowered based on the set RPM (a) to vary the engine load.
The method according to claim 16, wherein the launch control active starts the vehicle in one or more of starting on a flat ground when a manual transmission is applied, starting on a slope accompanied by the EPB/ESC cooperative control, starting at room temperature, and starting at a low temperature, and starting on a flat ground when applying the automatic transmission. , Vehicle launch control system, characterized in that the vehicle launch is made by at least one of ramp launch, room temperature launch, and low temperature launch.
The method according to claim 21, wherein the engine RPM increase through the low-temperature oscillation is made lower than the engine RPM increase in the room-temperature oscillation, and the ramp start accompanied by the EPB/ESC cooperative control and the engine RPM increase through the ramp start start on the flat ground. Vehicle launch control system, characterized in that made lower or higher than the increase in engine RPM of.

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