KR100889689B1 - Method and apparatus for controlling slopping road of hybrid electrical vehicle - Google Patents

Abstract

A gradient the control device is provided to prevent oil temperature of engine clutch from being increased and to improve ride comfort degraded according to direct-coupled and liberation of the frequent engine clutch. A gradient the control device contains: an excel position sensor(10) sensing location of an accel pedal; a brake pedal sensor sensing operation of the brake pedal(20); an engine clutch(40) controlling that power of engine is delivered to speed change part; a slope sensor(30) sensing the gradient of the road; a hybrid control unit receiving signals supplied from the excel position sensor, the brake pedal sensor, the slope sensor and the engine clutch and generating the control signal; and a driving part operating engine(110), a generator(120) and an electric motor(130).

Description

METHOD AND APPARATUS FOR CONTROLLING SLOPPING ROAD OF HYBRID ELECTRICAL VEHICLE}

The present invention relates to a method and apparatus for controlling the inclination road of a hybrid vehicle, and more particularly, in a hybrid vehicle equipped with an intergrated generated starter (ISG), the gradient is frequently used when the vehicle is restarted after the vehicle stops while the vehicle is inclined. The present invention relates to an apparatus and a method for preventing direct connection and release of an engine clutch.

A general hybrid vehicle (HEV) is a vehicle that uses the output of an internal combustion engine and a motor together, and it is possible to drastically reduce the emission of harmful gases compared to a general vehicle equipped with only an internal combustion engine. -car)

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However, the vehicle driving force (Vehicle Tractive Force) required for driving the vehicle is not only determined by the speed of the vehicle but also by the gradient of the road on which the vehicle is running. In the case of the conventional hybrid car, the driving mode is selected only by the vehicle speed. There is this.

3 is a diagram illustrating a combination of an engine and a transmission according to driving conditions, and the driving force F of the vehicle is calculated by the following equation.

F = To × TGR × N / R

Here, To is the engine output torque, TGR is the total gear ratio, N is the overall transmission efficiency, and R is the tire companion diameter.

The driving force F required for each element in the motor driving mode corresponding to the first speed can be obtained, which is equal to the motor driving torque of the hybrid vehicle. However, as shown in FIG. 3, the driving force required when driving the inclined road is obtained by the engine power transmitted by the direct connection between the electric motor and the engine clutch.

However, when stopping and driving are frequently repeated during driving on such an inclined road, the engine clutch is worn out due to frequent direct connection and release of the engine clutch to obtain the required driving force. There was a problem in that the driving is stopped because the required driving force can not be generated by direct connection.

Accordingly, the present invention has been made to solve such a problem, an object of the present invention, the pressure of the engine clutch in the engine stop state when the engine clutch is released when the vehicle is restarted after stopping at a gradient road running at a slope of more than a predetermined set value. By increasing the maximum speed and driving through the electric motor and the generator, it is possible to prevent wear of the engine clutch due to frequent connection and release of the engine clutch, and also to prevent the engine clutch oil temperature rises, and frequent engine The present invention provides a control device and a method of inclination of a hybrid vehicle which can improve the ride comfort that is degraded as the clutch is directly connected and released.

Technical problem according to the first aspect of the present invention for achieving this object is,

Excel position sensor for detecting the position of the accelerator pedal and outputting the electrical signal;

A brake pedal sensor configured to detect an operation of the brake pedal and output the same as an electrical signal;

An engine clutch that regulates transmission of power of the engine to the transmission portion;

A slope sensor which detects a gradient of a road and outputs it as an electrical signal;

A hybrid controller configured to receive signals supplied from the Excel position sensor, the brake pedal sensor, the inclination sensor, and the engine clutch to generate a control signal; And

Driving the driving unit for driving the engine, generator, and electric motor,

The hybrid controller

When the engine clutch is released when the engine clutch is released after the vehicle stops while driving on an inclined road based on an electrical signal supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch. It characterized in that the oscillation with the power generated through the generator and the electric motor after applying the engine clutch pressure to the maximum,

Here, the hybrid control unit,

When the signal supplied from the inclination sensor is 25% or more stored in advance and the accelerator pedal is operated when the brake pedal is not operated and the engine clutch is released, the engine clutch pressure is increased to the maximum after the engine stops, and the transmission It is characterized by oscillating through the motor and the generator.

In addition, the hybrid control unit,

Stopping fuel injection of an engine when traveling through the electric motor and the generator,

The intake and exhaust valves of the engine are characterized in that the opening control to a predetermined value.

Technical problem according to the second aspect of the present invention for achieving this object,

a) determining whether the gradient is traveling on the inclined road above the preset value using a signal supplied from the inclination sensor; And

b) using the signals supplied from the Excel position sensor and the brake pedal sensor to determine whether to restart after stopping the vehicle on the inclined road, to determine whether the engine clutch is released, and to drive through the electric motor and the generator according to the determination result. Including steps

 B),

b-1) determining whether to restart after stopping while driving on an inclined road having a gradient of a preset value using a signal supplied from an Excel position sensor, a brake pedal sensor, and an inclination sensor;

b-2) determining whether the engine clutch is directly connected by using a signal supplied from the engine clutch when restarting after stopping while driving on the inclined road;

b-3) maximally increasing engine clutch pressure in an engine stopped state when the engine clutch is not directly connected in step b-2);

b-4) stopping fuel injection after execution of said step;

b-5) controlling the intake and exhaust valves to open a predetermined value;

b-6) characterized by comprising the step of driving with the power generated by the electric motor and the generator,

When the engine clutch is directly connected in the step b-2) further comprises the step of driving through the control of the transmission unit is received power of the engine by the direct connection of the electric motor and the engine clutch.

Technical problem according to the third aspect of the present invention for achieving the above object,

Excel position sensor for detecting the position of the accelerator pedal and outputting the electrical signal;

A brake pedal sensor configured to detect an operation of the brake pedal and output the same as an electrical signal;

An engine clutch oil temperature sensor configured to detect an oil temperature of an engine clutch intermittent of transmitting power of the engine to the transmission and output the electrical signal as an electrical signal;

A slope sensor which detects a gradient of a road and outputs it as an electrical signal;

A hybrid controller configured to receive signals supplied from the Excel position sensor, the brake pedal sensor, the inclination sensor, and the engine clutch to generate a control signal; And

Driving the driving unit for driving the engine, generator, and electric motor,

The hybrid controller

The engine clutch oil temperature is pre-stored when the vehicle is restarted after stopping at a gradient road based on an electrical signal supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch oil temperature sensor. It is characterized in that the oscillation with the power generated through the generator and the electric motor after applying the engine clutch pressure to the maximum in the engine stop state when the second set value or more,

In addition, the hybrid controller

The engine clutch oil temperature is pre-stored when the vehicle is restarted after stopping at a slope road of 25% or more that is previously stored based on the electrical signals supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch oil temperature sensor. It is characterized in that the oscillation with the power generated through the generator and the electric motor after the maximum application of the engine clutch pressure in the engine stop state when more than 125 degrees,

In addition, the hybrid control unit,

Stop fuel injection when oscillating through the electric motor and the generator,

The intake and exhaust valves of the engine are characterized in that the opening control to a predetermined value.

Technical problem according to the fourth aspect of the present invention for achieving the above object,

A) using the signal supplied from the inclination sensor to determine whether the gradient is traveling on the inclination road more than the first preset value stored in advance; And

B) it is determined whether the vehicle is restarted after stopping while driving on the inclined road using signals supplied from the Excel position sensor and the brake pedal sensor, and it is determined whether the engine clutch oil temperature is equal to or greater than the second preset value, and the electric motor according to the determination result. And driving through a generator,

 Step B) is

B-1) determining whether the vehicle is re-driving after stopping while driving on the inclined road;

 B-2) determining whether the oil temperature of the engine clutch is equal to or greater than the second set value when the vehicle stops while driving on the inclined road as a result of the determination of step B-1);

B-3) maximally increasing the engine clutch pressure in the engine stop state when the engine clutch oil temperature is greater than or equal to the second set value as a result of the determination in step B-2);

B-4) stopping fuel injection after execution of said step;

B-5) controlling the intake and exhaust valves to open a predetermined value; And

B-6) characterized in that it comprises the step of driving with the power generated by the electric motor and the generator,

In the step B-2), if the oil temperature of the engine clutch is not equal to or greater than the second set value further comprises the step of running through the control of the transmission portion is received power of the engine directly connected to the electric motor and the engine clutch. .

As described above, according to the present invention, when the engine clutch is released when the grade is restarted after the vehicle stops on the inclined road with a gradient of more than a predetermined value, the motor clutch and the generator are increased after the maximum pressure of the engine clutch is stopped. By running through the engine, it is possible to prevent wear of the engine clutch due to frequent connection and release of the engine clutch, and to prevent the engine clutch oil temperature from rising, and to reduce ride comfort caused by frequent connection and release of the engine clutch. Get the effect to improve.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 4 is a block diagram showing the configuration of the control device inclination of the hybrid vehicle according to an embodiment of the present invention.

 As shown in the figure, the configuration of the control device to the slope of the hybrid vehicle according to an embodiment of the present invention, the Excel position sensor 10, the brake pedal sensor 20, the inclination sensor 30, the engine clutch 40, the hybrid control unit 50, the battery 100, the charging control unit 60, the engine control unit 70, the engine 110, the generator control unit 80, the generator 120, the electric motor control unit 90, And an electric motor 130.

Here, the Excel position sensor 10 detects the position of the Excel pedal and outputs it as an electrical signal, and the brake pedal sensor 20 detects the operation of the brake pedal and outputs it as an electrical signal, and the tilt sensor 30 detects the inclination of the vehicle and outputs it as an electrical signal.

The engine clutch 40 is directly connected to or released according to the control signal of the hybrid controller 50 to provide power to the engine 110 to a speed changer (not shown) to control shifting.

On the other hand, the hybrid controller 50 is a first set value pre-stored in the gradient diagram based on the signal supplied from the Excel position sensor 10, brake pedal sensor 20, inclination sensor 30 and the engine clutch 40 When the engine clutch 40 is directly connected when the vehicle is restarted after stopping at a slope road of more than 25%, the control signal and the electric motor 130 for maximally increasing the pressure of the engine clutch 40 in the engine stop state. And generates a control signal for controlling the generator 120.

At this time, the hybrid control unit 50 is provided to stop the fuel injection of the engine 110, and to control the opening of the intake valve and the exhaust valve to a predetermined value in order to remove the engine resistance.

 Meanwhile, the battery 100 provides power for driving the electric motor 130, and the charging control unit 60 controls the charging of the battery 100 under the control of the hybrid control unit 50.

In addition, the hybrid controller 50 outputs a control signal for controlling the engine 110, and the engine 110 generates rotational power using gasoline fuel or the like under the control of the hybrid controller 50. It is provided to.

Subsequently, the generator controller 80 is provided to output a control signal for controlling the generator 120 under the control of the hybrid controller 50, and the generator 120 is a control signal of the generator controller 80. Is provided to generate energy.

In addition, the electric motor controller 90 outputs a control signal for controlling the electric motor 130 under the control of the hybrid controller 50, and the electric motor 130 controls the electric motor controller 90. According to the signal, electric energy is used to generate power power.

According to the above configuration, the inclination road control device of the hybrid vehicle according to the present invention, the signal supplied from the Excel position sensor 10, brake pedal sensor 20, the inclination sensor 30 and the engine clutch 40. The hybrid control unit 50 receives the engine clutch 40 when the engine clutch 40 is directly connected when the vehicle is restarted after the vehicle stops on the slope road based on the received signals. The engine clutch 40 is increased to the maximum, and then oscillated using the energy of the electric motor 130 and the generator 120.

That is, the hybrid controller 50 generates a control signal for stopping driving of the engine 110, and the control signal is supplied to the engine 110 through the engine controller 70 to stop the engine 110. Then, the pressure of the engine clutch 40 is increased to the maximum under the control of the hybrid controller 50. Thereafter, the hybrid controller 50 generates a control signal for starting the vehicle through the electric motor 130 and the generator 120.

At this time, the hybrid control unit 50 controls the engine control unit 70 to stop fuel injection of the engine 100, and opens and controls the intake valve and the exhaust valve to a predetermined value.

In addition, the vehicle is started by the energy of the generator 120 and the rotational power of the electric motor 130 generated according to the control signal of the hybrid controller 50 provided through the generator controller 80.

Here, the rotational power of the electric motor 130 is generated using the power of the battery 100 under the control of the electric motor control unit 90 receives the control signal of the hybrid control unit 50.

FIG. 5 is a flowchart illustrating a process of controlling the inclination of the hybrid vehicle by the hybrid controller 50 illustrated in FIG. 4. An inclination control process of a hybrid vehicle will be described with reference to the drawings.

The hybrid controller 50 receives electrical signals supplied from an Excel position sensor 10, a brake pedal sensor 20, and an inclination sensor 30 supplied while driving (301), based on the received electrical signals. If it is determined that the gradient is required to restart after stopping the slope road above the preset value (25%) or more stored in advance (303), and the determination result indicates that the slope is required to restart in the stop state of the slope road of 25% or more, Based on the signal supplied from the engine clutch 40, it is determined whether the engine clutch 40 is directly connected (305).

If it is determined in step 305 that the engine clutch 40 is not directly connected, the hybrid control unit 50 stops the engine 110 through the engine control unit 70 (307) after the engine clutch ( The pressure of 40 is increased to the maximum state (309).

Thereafter, the hybrid controller 50 generates a control signal for stopping fuel injection of the engine 110 through the engine controller 70, and the fuel injection of the engine 110 is stopped according to the control signal. (311).

In addition, the hybrid controller 50 opens and controls the intake valve and the exhaust valve to a predetermined predetermined value (313), and the electric motor 130 and the control unit under the control of the electric motor control unit 90 and the generator control unit 80. Each control signal for driving the generator 120 is generated.

Oscillations are generated by the energy generated by the generator 120 and the rotational power generated by the electric motor 130 under the control of the electric motor control unit 90 and the generator control unit 80 provided with the respective control signals. (315).

On the other hand, if it is determined through the step 303 that the gradient is not a slope of more than 25%, the oscillation is driven by the rotational power of the electric motor 130 and the engine power transmitted through the engine clutch 40 (317).

In an embodiment of the present invention, when the engine clutch is not directly connected, the generator and the electric motor are started. However, the generator and the electric motor even when the oil temperature of the engine clutch is greater than or equal to the second preset value (125 degrees C.). You can also oscillate using.

When the oil temperature of the engine clutch is greater than or equal to the second set value, the process of restarting after stopping the gradient at an inclination of 25% or more using a generator and an electric motor is the same as described above, and thus a detailed description thereof will be omitted.

As such, those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing to the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. .

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3 is a diagram illustrating a combination of an engine and a transmission according to driving conditions of a general hybrid vehicle.

4 is a diagram illustrating a configuration of a control device for inclination of a hybrid vehicle according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating a process of controlling the inclination of the hybrid car according to an exemplary embodiment of the present invention.

Claims (12)

Excel position sensor for detecting the position of the accelerator pedal and outputting the electrical signal; A brake pedal sensor configured to detect an operation of the brake pedal and output the same as an electrical signal; An engine clutch that regulates transmission of power of the engine to the transmission portion; A slope sensor which detects a gradient of a road and outputs it as an electrical signal; A hybrid controller configured to receive signals supplied from the Excel position sensor, the brake pedal sensor, the inclination sensor, and the engine clutch to generate a control signal; And Driving the driving unit for driving the engine, generator, and electric motor, The hybrid controller When the engine clutch is released when the engine clutch is released after the vehicle stops while driving on an inclined road based on an electrical signal supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch. Slope control device of the hybrid vehicle, characterized in that the oscillation with the power generated through the generator and the electric motor after the maximum application of the engine clutch pressure. The method of claim 1, wherein the hybrid control unit, When the gradient of the road supplied from the inclination sensor is 25% or more previously stored and the accelerator pedal is operated when the brake pedal is not operated and the engine clutch is released, the engine clutch pressure is increased to the maximum after the engine stops. And an inclination control device of a hybrid vehicle, characterized in that oscillating through the electric motor and the motor. The method of claim 1, wherein the hybrid control unit, Stopping fuel injection when traveling through the electric motor and the generator, And controlling the intake and exhaust valves of the engine to a predetermined value. a) determining whether the gradient is traveling on the inclined road above the preset value using a signal supplied from the inclination sensor; And b) using the signals supplied from the Excel position sensor and the brake pedal sensor to determine whether to restart after stopping the vehicle on the inclined road, to determine whether the engine clutch is released, and to drive through the electric motor and the generator according to the determination result. Method for controlling the inclination of the hybrid vehicle, characterized in that it comprises a step  The method of claim 4, wherein the b) step, b-1) determining whether to restart after stopping while driving on an inclined road having a gradient of a preset value using a signal supplied from an Excel position sensor, a brake pedal sensor, and an inclination sensor; b-2) determining whether the engine clutch is directly connected by using a signal supplied from the engine clutch when restarting after stopping while driving on the inclined road; b-3) maximally increasing engine clutch pressure in an engine stopped state when the engine clutch is not directly connected in step b-2); b-4) stopping fuel injection after execution of said step; b-5) controlling the intake and exhaust valves to be opened to a predetermined predetermined value; And b-6) a method for controlling the inclination of a hybrid vehicle, characterized in that it comprises oscillating with the power generated by the electric motor and the generator. The method of claim 5, wherein when the engine clutch is directly connected in the step b-2) further comprising the step of starting the engine power by the direct connection of the electric motor and the engine clutch incline road of the hybrid car, characterized in that Control method. Excel position sensor for detecting the position of the accelerator pedal and outputting the electrical signal; A brake pedal sensor configured to detect an operation of the brake pedal and output the same as an electrical signal; An engine clutch oil temperature sensor configured to detect an oil temperature of an engine clutch intermittent of transmitting power of the engine to the transmission and output the electrical signal as an electrical signal; A slope sensor which detects a gradient of a road and outputs it as an electrical signal; A hybrid controller configured to receive signals supplied from the Excel position sensor, the brake pedal sensor, the inclination sensor, and the engine clutch to generate a control signal; And Driving the driving unit for driving the engine, generator, and electric motor, The hybrid controller The engine clutch oil temperature is pre-stored when the vehicle is restarted after stopping at a gradient road based on an electrical signal supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch oil temperature sensor. When the engine is at a second set value or more, the engine clutch pressure is applied to the maximum, and then oscillates with the power generated by the generator and the electric motor. The method of claim 7, wherein the hybrid control unit The engine clutch oil temperature is pre-stored when the vehicle is restarted after stopping at a slope road of 25% or more, which is based on electrical signals supplied from the Excel position sensor, the brake pedal sensor, the gradient sensor, and the engine clutch oil temperature sensor. When the engine is in a degree of higher than the engine clutch state to the maximum after applying the engine clutch pressure, the generator is controlled by the gradient generated by the power generated by the generator and the electric motor. The method of claim 8, wherein the hybrid control unit, Stop fuel injection when oscillating through the electric motor and the generator, And controlling the intake and exhaust valves of the engine to a predetermined value. A) using the signal supplied from the inclination sensor to determine whether the gradient is traveling on the inclination road more than the first preset value stored in advance; And B) it is determined whether the vehicle is restarted after stopping while driving on the inclined road using signals supplied from the Excel position sensor and the brake pedal sensor, and it is determined whether the engine clutch oil temperature is equal to or greater than the second preset value, and the electric motor according to the determination result. And driving through a generator.  The method of claim 10, wherein the step B) is B-1) determining whether the vehicle is re-driving after stopping while driving on the inclined road;  B-2) determining whether the oil temperature of the engine clutch is equal to or greater than the second set value when the vehicle stops while driving on the inclined road as a result of the determination of step B-1); B-3) maximally increasing the engine clutch pressure in the engine stop state when the engine clutch oil temperature is greater than or equal to the second set value as a result of the determination in step B-2); B-4) stopping fuel injection after execution of said step; B-5) controlling the intake and exhaust valves to open a predetermined value; And B-6) a method of controlling the inclination of the hybrid vehicle, characterized in that it comprises the step of driving with the power generated by the electric motor and the generator. 12. The method of claim 11, further comprising the step of starting with the power of the engine advanced in the direct connection of the electric motor and the engine clutch when the oil temperature of the engine clutch in the step B-2 is not greater than the second set value. Slope road control method of a hybrid vehicle, characterized in that.

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