JPH06278585A - Brake control device for vehicle - Google Patents

Abstract

PURPOSE:To precisely control braking force of every system without severe characteristic adjustment at each linear control valve. CONSTITUTION:This brake control device for vehicles is equipped with a plurality of linear control valves 6a and 6b for generating brake fluid pressure for wheels, a pressure sensor 14 for detecting the brake fluid pressure generated by a plurality of the linear control valves 6a and 6b, and a controller 16 which adjusts the electric signals sent to the linear control valves 6a and 6b by the pressure signals from the pressure sensor 14 and adjusts the brake fluid pressure generated by a plurality of linear control valves 6a and 6b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle brake control device equipped with a linear control valve for controlling brake fluid pressure of wheels.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing variations in brake fluid pressure for each system in the case of two systems using a linear control valve. Output I on one system side and output I on the other system side with respect to the current value
When there is a variation between I and I as shown in FIG. 4 (mainly due to the variation of the thrust of the solenoid of the linear control valve and the variation of the spring that presses the spool of the linear control valve), the target pressure P ₁ is set to When the current I ₁ is applied to both systems to obtain the pressure, the output I obtains the pressure P _1, but at the output II, the generated pressure becomes P ₂ , and the target pressure P ₁ cannot be obtained. Therefore, in order to obtain the target pressure P ₁ with the linear control valve which also has the characteristic of the output II, it is necessary to control so as to apply the current I ₂ . in this way,
In a vehicle brake control device that has a multi-system brake using a linear control valve, the generated brake fluid pressure tends to vary with respect to the electric command value sent from the controller to the linear control valve, and it may occur between systems. There is a possibility that the braking force becomes imbalanced and the behavior of the vehicle during braking becomes unstable.

[0003]

In the conventional vehicle brake control device, in order to eliminate the instability of the behavior of the vehicle during braking, the brake pressure characteristics with respect to the input electric signal of the linear control valve are individually controlled exactly. Since the linear control valve needs to be adjusted and used in combination, the linear control valve requires an adjustment mechanism capable of making detailed adjustments, which raises a problem that the price becomes high. In addition, the adjustment takes a lot of time, and there is a problem that the handling is troublesome.

The present invention has been made to solve the above problems, and precisely controls the braking force of each system without requiring strict characteristic adjustment for each linear control valve. It is an object of the present invention to obtain a vehicle brake control device that can be used.

[0005]

According to a first aspect of the present invention, there is provided a vehicular brake control device comprising: a plurality of linear control valves for generating brake fluid pressure of wheels; and a brake generated by the plurality of linear control valves. A pressure sensor for detecting a hydraulic pressure and a controller for adjusting an electric signal to the linear control valve by a pressure signal from the pressure sensor to regulate each brake hydraulic pressure generated by the plurality of linear control valves are provided. It is a thing.

According to a second aspect of the present invention, there is provided a vehicle brake control device comprising: a plurality of linear control valves for generating wheel brake fluid pressure; a lateral acceleration sensor for detecting a lateral acceleration of a vehicle during turning; The electric signal to each of the linear control valves is adjusted in response to the change in the axial load of the wheel caused by the lateral acceleration detected by the lateral acceleration sensor, and the generated brake fluid pressure of each of the plurality of linear control valves is adjusted. And a controller.

According to a third aspect of the present invention, there is provided a vehicle brake control device, wherein a plurality of linear control valves for generating wheel brake fluid pressure, an acceleration / deceleration sensor for detecting acceleration / deceleration of the vehicle, and the acceleration / deceleration sensor. A controller that adjusts the electric signal to each of the linear control valves in response to the change in the axle load of the wheel caused by the acceleration / deceleration detected by, and regulates the brake fluid pressure generated by each of the plurality of linear control valves. Be prepared.

According to a fourth aspect of the present invention, there is provided a vehicle brake control device comprising: a plurality of linear control valves for generating brake fluid pressure on wheels; wheel axle load detecting means for detecting wheel axle loads on the wheels. A controller that adjusts an electric signal to the linear control valve according to a wheel shaft load of each system detected by the wheel shaft load detection means, and regulates each generated brake fluid pressure of the plurality of linear control valves. Be prepared.

According to a fifth aspect of the present invention, there is provided a vehicle brake control device, a plurality of linear control valves for generating brake fluid pressure of wheels, a brake temperature detecting means for detecting a brake temperature of the wheels, and the brakes. And a controller that adjusts an electric signal to the linear control valve according to the temperature of the wheel for each system detected by the temperature detecting means and adjusts the generated brake fluid pressure of the plurality of linear control valves. It is a thing.

According to a sixth aspect of the present invention, there is provided a vehicle brake control device, wherein a plurality of linear control valves for generating wheel brake fluid pressure and a pressure difference between the generated brake fluid pressures of the plurality of linear control valves are provided. And a warning means for issuing a warning when the output of the pressure sensor exceeds a predetermined value.

According to a seventh aspect of the present invention, there is provided a vehicle brake control device, which is a linear control valve for generating a brake fluid pressure for a wheel, a pressure sensor for detecting a brake fluid pressure produced by the linear control valve, and this pressure sensor. And an alarm means for issuing an alarm when the output of the above exceeds a predetermined value.

[0012]

In the vehicle brake control device according to the first aspect of the present invention, the pressure sensor detects the brake fluid pressure generated by the linear control valve, the pressure signal is sent to the controller, and the electric signal from the controller causes The brake fluid pressure generated by each linear control valve is adjusted, and the braking force for each system is optimized.

In the vehicle brake control device according to the second aspect of the present invention, the lateral acceleration sensor detects the lateral acceleration of the vehicle, the detection signal is sent to the controller, and each linear control valve is sent by the signal from the controller. Each generated brake fluid pressure is regulated, and the braking force for each system is optimized.

In the vehicle brake control device according to the third aspect of the present invention, the acceleration / deceleration sensor detects the acceleration / deceleration of the vehicle, and this detection signal is sent to the controller. Each generated brake fluid pressure is regulated, and the braking force for each system is optimized.

In the vehicle brake control device according to the fourth aspect of the present invention, the wheel shaft load detecting means detects the wheel shaft load of the wheel, and this detection signal is sent to the controller, and the electric signal from the controller The brake fluid pressure generated by each linear control valve is adjusted, and the braking force for each system is optimized.

In the vehicle brake control device according to the fifth aspect of the present invention, the brake temperature detecting means detects the brake temperature of the wheels, and this detection signal is sent to the controller, and each linear signal is sent by the electric signal from the controller. The brake fluid pressure generated by the control valve is regulated, and the braking force for each system is optimized.

In the brake control device for a vehicle according to claim 6 of the present invention, the pressure sensor detects the pressure difference between the brake fluid pressures generated by the plurality of linear control valves, and when the difference exceeds a predetermined value, An alarm is issued by the alarm means.

In the brake control device for a vehicle according to claim 7 of the present invention, the pressure sensor detects the brake fluid pressure generated by the linear control valve, and when this value exceeds a predetermined value, an alarm is issued by the alarm means. To be

[0019]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
In the figure, 1 is a brake pedal operated by the driver, 2
Is a master cylinder that generates brake fluid pressure by the operation of the brake pedal 1, and 3 is the brake pedal 1
Pedal force sensors 4a, 4b, 4 for detecting force when stepping on
c and 4d are the first to fourth wheels of the vehicle,
5a, 5b, 5c and 5d are the first to fourth wheels 4
wheel cylinders attached to a, 4b, 4c and 4d, 6a is a master cylinder 2 and a first cylinder
First linear control valve provided between the wheel cylinder 5a and the second wheel cylinder 5b, 6b
Is the master cylinder 2 and the third wheel cylinder 5
a second linear control valve provided between the c and the fourth wheel cylinder 5d, 7a is a first linear control valve line connecting the master cylinder 2 and the first linear control valve 6a, 7b is a second linear control valve line connecting the master cylinder 2 and the second linear control valve 6b, and 8a is the first linear control valve 6a.
And a first wheel cylinder conduit for connecting the first wheel cylinder 5a and the second wheel cylinder 5b, 8b is a second linear control valve 6b, and a third wheel cylinder 5c and a fourth wheel It is a pipe line for the second wheel cylinder that connects the cylinder 5d.

Reference numeral 9 denotes a reservoir for storing brake fluid, 1
Reference numeral 0 is a pressurizing pump for assembling and pressurizing the brake fluid in the reservoir 9, 11 is an accumulator for accumulating the brake fluid pressurized by the pressurizing pump 10 and has a high pressure, and 12a is an accumulator 11 and the first linear control valve 6a. connection,
A first supply conduit 12b for supplying the brake fluid to the first linear control valve 6a connects the accumulator 11 and the second linear control valve 6b to supply the brake fluid to the second linear control valve 6b. Second supply line, 13a
Is a first discharge conduit for connecting the reservoir 9 and the first linear control valve 6a to discharge the brake fluid to the reservoir 9, 13b is the reservoir 9 and the second linear control valve 6b
Is connected to connect the first wheel cylinder pipe line 8a and the second wheel cylinder pipe line 8b to each other.
pressure sensors for detecting the pressure between a and 8b, 15a and 15
b, 15c and 15d are wheel speed sensors for detecting the rotational speed of the wheels with their tips directed to the first, second, third and fourth wheels 4a, 4b, 4c and 4d, respectively, and 16 is the first and first wheels. This is a controller for controlling the two linear control valves 6a and 6b.

FIG. 2 is a sectional view of the first linear control valve 6a shown in FIG. 1, and 20 is a solenoid for generating a force proportional to the electric current from the electric signal from the controller 16,
20a is an output shaft that projects from the solenoid 20 and outputs the axial force from the solenoid 20, 21 is a housing, 21a is a first connection port for connecting to the first supply conduit 12a,
21b is a second connection port for connecting to the first discharge pipe line 13a, 21c is a third connection port for connecting to the first linear control valve pipe line 7a, and 21d is a wheel cylinder pipe. It is a fourth connection port for connecting to the passage 8a. 22 is the first sleeve which constitutes the pressure regulating valve,
22a is an input port communicating with the first connection port 21a, 2
2b is a discharge port communicating with the second connection port 21b, 22
c is an output port.

Reference numeral 23 is a first spool which is arranged on the axis of the output shaft 20a and is slidable inside the sleeve 22, and 23a and 23b are first spools which form a valve between the input port 22a and the discharge port 22b. Step and second step, 23
Reference numeral c is an action surface for the first spool 23 to receive the force of the solenoid 20, 23d is a pressure transmission port for penetrating the first spool 23 in a direction perpendicular to the axial direction and for transmitting pressure, 24 Formed on the housing 21
Both ends of the spool 23 are made to have the same pressure, and the second connection port 21
b is a first passage communicating with b, 25 is a first spring provided on one side of the first spool 23 for urging the first spool 23 toward the solenoid 20, and 26 is the first spool 2
3, a reaction force piston that receives the pressure from the pressure transmission port 23d at one end surface thereof, 27 is a stopper that abuts the other end surface of the reaction force piston 26 so as to prevent the reaction force piston 26 from moving, and 28 is A stopper 27, a holder for holding the first spring 25, 29 is a set screw for fixing the holder 28 and the sleeve 22 to the housing 21,
Reference numeral 30 is a second passage formed in the housing 21 and communicating with the output port 22c.

Reference numeral 31 denotes a second sleeve 31a, 31b which is inserted into the housing 21 and constitutes a passage switching valve.
Is a pair of ports formed on the second sleeve 31 and communicating with the fourth connection port 21d, 31c is a third port formed on the second sleeve 31 to form a valve seat, and 32 is inside the second sleeve 31 2nd spool that can slide freely, 3
2a and 32b are the first port 31a and the second port 31
first and second steps that cooperate with b to form a valve;
33 and 34 are first and second valves respectively provided on both end surfaces of the second spool 32, 35 is a second spring for urging the second spool 32 in one direction, and 36 is a second spring. A pin that transmits the force of 35 to the second spool 32, 37 is a guide that positions the pin 36, 38 is a valve seat that is provided facing the second valve 34 and has a port 38a, 39 is a spacer, and 40 is a first spacer. Set screws 41 to 46 for fixing the second spool 32, the valve seat 38 and the spacer 39 to the housing 21 are O-rings for sealing the respective parts. Although the above linear control valve has been described for the first linear control valve 6a,
The second linear control valve 6b also has the same structure as the first linear control valve, and the description thereof will be omitted.

FIG. 3 is a sectional view of the pressure sensor 14 shown in FIG. 1, in which 50 is a housing and 50a is a second linear control valve 6 connected to the second wheel cylinder conduit 8b.
a first connection port for receiving the output pressure of b, a cover 51 for sealing the housing 50, a reference numeral 51a connected to the first wheel cylinder pipe line 8a for receiving the output pressure of the first phosphorus control valve 6a. 2 is a connection port, 52 is a piston slidably provided in the housing 50, 53a, 5
3b are first and second springs which are provided on both sides of the piston 52 and locate the piston 52 at the center,
Numeral 54 is an arm that is erected on the piston 52 and interlocks with the reciprocating motion of the piston 52. 55 is the position of the piston 52
Reference numeral 56 denotes a sensor that is taken out as an electrical output via 4, and 56 is a seal which is provided on the peripheral wall surface of the piston 52 and prevents the brake fluid from leaking from the outer periphery of the piston 52.

Next, the operation of the vehicle brake control device having the above structure will be described. When the driver steps on the brake pedal 1 during normal braking, the force of the brake pedal 1 is applied to the master cylinder 2 via the pedal force sensor 3 to generate brake hydraulic pressure. The brake fluid pressure generated in the master cylinder 2 is transmitted to the first and second linear control valves 6a and 6b via the first and second linear control valve pipes 7a and 7b, respectively.

On the other hand, the pedal effort sensor 3 detects the magnitude of the force with which the driver depresses the brake pedal 1 and sends a signal to the controller 16. The controller 16 sends a signal obtained by amplifying the pedal effort from the pedal effort sensor 3 by a predetermined ratio to the first and second linear control valves 6a and 6b. Linear control valve 6
Based on a signal from the controller 16, a and 6b regulate the high-pressure brake fluid, which has been pressurized by the pressure pump 10 and accumulated in the accumulator 11, in advance to a predetermined brake fluid pressure by a pressure adjusting action described later. Two brake fluid pressures, the brake fluid pressure generated by the master cylinder 2 and a predetermined brake fluid pressure adjusted based on a signal from the controller 16, are applied to the first and second linear control valves 6a and 6b. Therefore, a switching valve, which will be described later, selects the high pressure side, and brake fluid pressure is applied to the first to fourth wheel cylinders 5a, 5b, 5c and 5d to perform braking.

Next, the pressure adjusting action of the brake fluid by the first and second linear control valves 6a and 6b based on the signal from the controller 16 will be described. An electric output amplified from the controller 16 to the pedaling force signal of the pedaling force sensor 3 at a predetermined ratio is output to the first and second linear control valves 6.
It is sent to the solenoid 20 of a and 6b. The solenoid 20 outputs an axial force based on an electric signal from the controller 16 to the output shaft 2
Output from 0a. This axial force is applied to the output shaft 20a and the working surface 2
3c to connect the first spool 23 to the first spring 2
5 is moved in the direction of compression. The movement of the spool 23 eliminates the overlap between the input port 22a and the first step portion 23a and opens the input port 22a. Further, the discharge port 22b overlaps the second step portion 23b and the discharge port 22b is closed.

Therefore, the high-pressure brake fluid accumulated in the accumulator 11 has the first supply line 12a, the second supply line 12b, the first connection port 21a, and the input port 22a.
It flows to the output port 22c via the pressure propagation port 23d. Further, the pressure of the output port 22c acts on one end surface of the reaction force piston 26 via the pressure propagation port 23d communicating with the output port 22c. Therefore, the force due to the pressure of the output port 22c acting on the first spool 23 becomes a force of (area of reaction piston 26) × (pressure of output port 22c), and this force resists the axial force of the solenoid 20. It acts in the direction to push back the output shaft 20a. When the pressure of the output port 22c rises and the force of the reaction force piston 26 becomes larger than the axial force of the solenoid 20, the first spool 2
3 moves in the direction of pushing back the output shaft 20a, the input port 22a and the first step portion 23a overlap again, and the supply of high-pressure brake fluid from the accumulator 11 is cut off.
Further, the discharge port 22b is also in the state of overlapping with the second step portion 23b, the discharge port 22b is also kept in the closed state, and the pressure in which the axial force of the solenoid 20 and the force by the reaction force piston 26 are balanced is output port 22c. Is output.

Now, when the axial force of the solenoid 20 is reduced by the electric signal from the controller 16, the force by the reaction force piston 26 is larger than the axial force of the solenoid 20, so that the first spool 23 operates as an output shaft. 20a is moved back. Due to the movement of the first spool 23, the discharge port 22b disappears without overlapping with the second step portion 23b, and the input port 22a is opened.
The input port 22a is closed by overlapping with 3a. For this reason, when the pressure of the output port 22c decreases and the force of the reaction force piston 26 becomes smaller than the axial force of the solenoid 20, the first spool 23 is pushed back by the axial force of the solenoid 20 and the axial force of the solenoid 20 is reversed. Force piston 26
The pressure in which the forces of the above are balanced is output to the output port 22c.
In this way, the pressure at the output port 22c can be freely adjusted by the electric signal from the controller 16.

The pressure of the output port 22c is guided to the third port 31c via the second passage 30. Further, the port 38a of the valve seat 38 is connected to the master cylinder 2 via the first and second linear control valve conduits 7a and 7b and the third connection port 21c, and the brake fluid generated in the master cylinder 2 is generated. Pressure is applied to port 38a.

Now, in the normal state, the second spool 32 in the second sleeve 31 is urged by the second spring 35 via the pin 36 in the direction of closing the port 38a. Therefore, the second port 31b of the second sleeve 31 overlaps the second step portion 32b and is closed, and the second valve 34 also closes the port 38a. Further, the first port 31a of the second sleeve 31 is open without overlapping the first step portion 32a, and the first valve 33 is also open of the third port 31c.

In this state, when the brake fluid pressure adjusted by the electric signal of the controller 16 enters from the output port 22c through the second passage 30, this brake fluid pressure is applied to the third port 31c and the first port 31c. Braking is performed by being applied to the first to fourth wheel cylinders 5a to 5d through the port 31a, the fourth connection port 21d, and the first wheel cylinder conduit 8a (second wheel cylinder conduit 8b). Be seen.

On the other hand, the first linear control valve 6a (second
From the first wheel cylinder conduit 8a (second wheel cylinder conduit 8b) of the linear control valve 6b) to the first connection port 50a (second connection port 51) of the pressure sensor 14.
The output pressure of the first linear control valve 6a and the second linear control valve 6b is applied to both end surfaces of the piston 52 via a). Therefore, when there is a difference between the output pressures of the first and second linear control valves 6a and 6b,
The piston 52 compresses the springs 53a and 53b to the side where the pressure applied to the end face is small and moves by an amount proportional to the differential pressure. The movement amount of the piston 52 is detected by the sensor 55 via the arm 54 and a signal is sent to the controller 16 so that the output pressure of both linear control valves 6a and 6b is optimized from the controller 16 to the braking state of the vehicle. The linear control valves 6a and 6b are controlled.

Further, the command pressure value based on the control signals of both linear control valves 6a and 6b from the controller 16, or the command pressure difference and the output pressure of the linear control valves 6a and 6b detected by the sensor 55 are within a predetermined range. When the value exceeds the limit or when the difference exceeds the predetermined value, the driver is warned by the warning means as a system abnormality.

Further, when the high pressure brake fluid cannot be supplied from the accumulator 11, the controller 1
In an abnormal case where the brake fluid pressure is not generated by the first and second linear control valves 6a and 6b based on the electric signal from the driver 6, the driver operates the brake pedal 1 to operate the brake fluid pressure in the master cylinder 2. Occurs, the brake fluid pressure from the master cylinder 2 is applied to the first and second linear control valve lines 8a and 8b, and the third connection port 21c.
Via the port 38a to the second spool 32.
Therefore, the second spool 32 moves in the direction of compressing the second spring 35, the first valve 33 closes the third port 31c, and the brake fluid pressure from the master cylinder 2 is transferred to the port 38a and the second hydraulic pressure. Port 31b, fourth connection port 21d, first and second wheel cylinder conduit 8
the first to fourth wheel cylinders 5 via a and 8b
Braking is performed in addition to a, 5b, 5c, and 5d.

Example 2. Further, in the above-described embodiment, two wheel cylinders are combined with one linear control valve to form two lines of brake piping, and the pressure sensor 14 is used for two systems.
The difference between the brake fluid pressures of the systems was detected and each brake fluid pressure was electrically controlled through the linear control valve, but one wheel control cylinder was combined with one linear control valve to brake each wheel cylinder. By detecting the hydraulic pressure, the brake hydraulic pressure of the wheel cylinder may be electrically controlled independently via the linear control valve, and the same effect as that of the above embodiment can be obtained.

Example 3. Further, the vehicle brake control device is provided with a lateral acceleration / deceleration sensor that detects the lateral acceleration / deceleration during turning, and the lateral acceleration / deceleration sensor detects the lateral acceleration / deceleration of the vehicle body during turning, and the load due to this lateral acceleration / deceleration is detected. The electric signal from the controller to the linear control valve is adjusted according to the change in each wheel axle load caused by the movement, and the brake fluid pressure for each system is adjusted to the driver's request (reflected in the pedal effort. ) A deceleration can be obtained. Instead of being detected by the acceleration / deceleration sensor, the lateral acceleration / deceleration may be calculated from the vehicle speed or the steering wheel angle.

Example 4. Further, the vehicle brake control device is provided with an acceleration / deceleration sensor for detecting the vehicle body deceleration at the time of normal braking. Corresponding to changes in wheel axle load, the electric signal from the controller to the linear control valve is adjusted to regulate the brake fluid pressure for each system to achieve the deceleration required by the driver (reflected in the pedal effort). When the vehicle decelerates, the front wheels have a strong brake and the rear wheels have a weak brake.

Example 5. In the above embodiment, as the wheel axle load detecting means, the lateral acceleration / deceleration sensor and the indirect wheel axle load detecting means such as the acceleration / deceleration sensor are used, but a load sensor for detecting a load on the wheel axle is used as the wheel axle load detecting means. Alternatively, the load on each wheel shaft may be directly detected, and the brake fluid pressure for each system may be adjusted from this value to obtain the deceleration (reflected in the pedal effort) requested by the driver.

Example 6. The vehicle brake control device is equipped with a temperature sensor that is a brake temperature detecting means for detecting the brake temperature of the brake shoes and drums of each wheel, and operates in response to changes in the braking ability based on the brake temperature of each wheel. It is also possible to optimally control the brake pressure for each system so that the deceleration required by the operator can be obtained.

[0041]

As described above, according to the vehicle brake control apparatus of the first aspect of the present invention, the pressure sensor detects the brake fluid pressure generated by the linear control valve, and this pressure signal is sent to the controller. The brake fluid pressure generated by each linear control valve is regulated by the electric signal from the controller, and the braking force for each system is optimized, so the braking force balance during braking is optimized and the vehicle is stabilized. You can brake to. In addition, it is possible to easily detect an abnormality in the vehicle brake control device, and it is not necessary to strictly adjust the characteristics of each linear control valve. There is also an effect that the price can be suppressed.

According to the vehicle brake control device of the present invention, the detection signal of the wheel axle load is sent to the controller, and the brake generated by each linear control valve is sent by the electric signal from the controller. Since the hydraulic pressure is adjusted and the braking force for each system is optimized, the deceleration required by the driver can be obtained together with the effect of claim 1.

According to the vehicle brake control apparatus of the fifth aspect of the present invention, the brake temperature detecting means detects the brake temperature of the wheels, and this detection signal is sent to the controller, and each of the electric signals from the controller causes the brake temperature to be detected. Since the generated brake fluid pressure of the linear control valve is regulated and the braking force for each system is optimized, the same effects as those of claims 2 to 4 can be obtained.

According to the vehicle brake control apparatus of the sixth aspect of the present invention, the pressure sensor detects the pressure difference between the brake fluid pressures generated by the plurality of linear control valves, and when the difference exceeds a predetermined value. Since the alarm is issued by the alarm means, the driver can easily know the abnormality of the device.

According to the vehicle brake control device of the seventh aspect of the present invention, the pressure sensor detects the brake fluid pressure generated by the linear control valve, and when this value exceeds a predetermined value, an alarm is issued by the alarm means. Since it is emitted, there is an effect that the driver can easily know the abnormality of the device.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the invention according to claim 1 of the present invention.

2 is a cross-sectional view of the linear control valve shown in FIG.

3 is a cross-sectional view of the pressure sensor shown in FIG.

FIG. 4 is a characteristic diagram showing a brake fluid pressure for each system of a conventional vehicle brake control device.

[Explanation of symbols]

2 master cylinder 3 pedal force sensor 5a, 5b, 5c, 5d first to fourth wheel cylinders 6a, 6b first and second linear control valves 10 pressurizing pump 11 accumulator 14 pressure sensor 16 controller 20 solenoid 22 sleeve 23 spool 26 Reaction force piston 55 Sensor

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[Procedure amendment]

[Submission date] December 2, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

Next, the pressure adjusting action of the brake fluid by the first and second linear control valves 6a and 6b based on the signal from the controller 16 will be described. An electric output amplified from the controller 16 to the pedaling force signal of the pedaling force sensor 3 at a predetermined ratio is output to the first and second linear control valves 6.
It is sent to the solenoid 20 of a and 6b. The solenoid 20 outputs an axial force based on an electric signal from the controller 16 to the output shaft 2
Output from 0a. This axial force is applied to the output shaft 20a and the working surface 2
3c to connect the first spool 23 to the first spring 2
5 is moved in the direction of compression. The movement of the spool 23 eliminates the overlap between the input port 22a and the first step portion 23a and opens the input port 22a. Further, the discharge port 22b overlaps the second step portion 23b and the discharge port 22b is closed.

Claims (7)

[Claims] 1. In a vehicle brake control device having a multi-system brake, a plurality of linear control valves that generate brake fluid pressure for wheels, and pressures that detect the brake fluid pressure generated by the plurality of linear control valves. A vehicle comprising: a sensor; and a controller that adjusts an electric signal to the linear control valve based on a pressure signal from the pressure sensor to regulate each brake fluid pressure generated by the plurality of linear control valves. Brake controller. 2. A brake control device for a vehicle having multi-system brakes, a plurality of linear control valves for generating brake fluid pressure of wheels, a lateral acceleration sensor for detecting lateral acceleration of a vehicle during turning, The electric signal to each of the linear control valves is adjusted in response to the change in the axial load of the wheel caused by the lateral acceleration detected by the lateral acceleration sensor, and the generated brake fluid pressure of each of the plurality of linear control valves is adjusted. A vehicle brake control device comprising a controller. 3. A brake control device for a vehicle having multi-system brakes, a plurality of linear control valves for generating brake fluid pressure of wheels, an acceleration / deceleration sensor for detecting acceleration / deceleration of a vehicle, and the acceleration / deceleration sensor. A controller that adjusts the electric signal to each of the linear control valves in response to the change in the axle load of the wheel caused by the acceleration / deceleration detected by, and regulates the brake fluid pressure generated by each of the plurality of linear control valves. A vehicle brake control device characterized by being provided. 4. A vehicle brake control device having a multi-system brake, comprising a plurality of linear control valves for generating brake fluid pressure of wheels, and wheel axle load detection means for detecting wheel axle loads of the wheels. A controller that adjusts an electric signal to the linear control valve according to a wheel shaft load of each system detected by the wheel shaft load detection means, and regulates each generated brake fluid pressure of the plurality of linear control valves. A vehicle brake control device characterized by being provided. 5. A brake control device for a vehicle having a multi-system brake, a plurality of linear control valves for generating brake fluid pressure of a wheel, a brake temperature detecting means for detecting a brake temperature of the wheel, and the brake. And a controller that adjusts an electric signal to the linear control valve according to the temperature of the wheel for each system detected by the temperature detecting means and adjusts the generated brake fluid pressure of the plurality of linear control valves. A vehicle brake control device characterized by the above. 6. A brake control device for a vehicle having a multi-system brake, wherein a plurality of linear control valves for generating brake fluid pressure for wheels and a pressure difference between the brake fluid pressures generated by the plurality of linear control valves are provided. A brake control device for a vehicle, comprising: a pressure sensor for detecting a pressure and an alarm means for issuing an alarm when the output of the pressure sensor exceeds a predetermined value. 7. A linear control valve for generating a brake fluid pressure of a wheel, a pressure sensor for detecting a brake fluid pressure generated by the linear control valve, and an alarm when an output of the pressure sensor exceeds a predetermined value. A brake control device for a vehicle, comprising: an alarm means.