KR20040021892A - A device of compensating rolling displacement of transmission in vehicles and a control method thereof - Google Patents

Abstract

PURPOSE: A device for correcting the rolling displacement of a transmission for a vehicle and a control method thereof are provided to decide traveling conditions of the vehicle to the starting of an engine, speed, and a TPS(Throttle Position Sensor) signal by adding a displacement compensating device to a transmission mounting part mounted between the transmission and a vehicle body, to reduce and correct the rolling displacement of the transmission, and to reduce noise in a starting or a normal traveling of the vehicle and improve shift quality. CONSTITUTION: A device for correcting the rolling displacement of a transmission for a vehicle mounts a power plant(5) comprising an assembly of an engine(1) and the transmission to a vehicle body(13) by an engine mounting part(7), a rolling mounting part(9), and a transmission mounting part(11), and corrects the rolling displacement of the transmission for the longitudinal direction of the vehicle in the starting of the vehicle. The rolling displacement correcting device of the transmission is composed of a correcting cylinder(23) hinge-combined to a support bracket(21) at the transmission of the transmission mounting part in the longitudinal direction of the vehicle body and mounted to an insulator(27) of the vehicle body through an operating rod(25); first and second duty solenoid valves(35,37) installed to first and second actuating pressure pipe lines(31,33) for supplying actuating pressure to the correcting cylinder, respectively, to duty-control the supply and discharge of actuating pressure to a control signal of an ECU(Electronic Control Unit,10); an actuating pressure pump(41) connected with the first and second actuating pressure pipe lines and a main supply pipe line(39) and operated by the control signal of the ECU to generate actuating pressure; an ignition switch(43) for outputting a starting signal of the engine to the ECU; a speed sensor(45) for outputting a speed signal to the ECU; and a throttle position sensor(47) for outputting an opening signal of a throttle valve to the ECU.

Description

Rolling displacement correction device for vehicle transmission and its control method {A DEVICE OF COMPENSATING ROLLING DISPLACEMENT OF TRANSMISSION IN VEHICLES AND A CONTROL METHOD THEREOF}

The present invention relates to a rolling displacement correction device for a vehicle transmission and a control method thereof, and more particularly, according to the engine start, vehicle speed and TPS signal through a configuration for displacement compensation on a transmission mount mounted between the transmission and the vehicle body. The present invention relates to a rolling displacement amount correcting apparatus for a vehicle transmission and a method of controlling the same, by correcting such that the amount of rolling displacement of the transmission is reduced, thereby simultaneously improving driving noise at the time of starting the vehicle and traveling noise at the time of normal driving.

In general, in a vehicle, when a power plant consisting of an engine, a clutch, and a transmission are mounted in an engine room, the vibration and noise inevitably generated during operation of the engine are attenuated and the minimum vibration and noise are transmitted to the vehicle body. In order to improve the riding comfort, it is mounted via a plurality of mounts.

As described above, in the engine room of the power plant, as shown in FIG. 3, the power plant 100 including the assembly of the engine 101 and the transmission 103 is mounted in the engine room in a transverse state. It is common to mount the engine mount 105 at the front side, the transmission mount 107 at the rear side of the transmission 103, and mount it at three positions such as a rolling mount 109 on the side of the engine 101 facing forward.

Among the above mounts, the transmission mount 107 according to the present invention is an insulator (fixed) through the mounting bracket 115 on one side of the vehicle body 113 of the support bracket 111 formed at the rear of the transmission 103. 117, wherein the insulator 117 has a shaft hole disposed in the vehicle body length direction, and is configured by bolting the support bracket 111 to the shaft hole.

As such, the insulator 117 of the conventional transmission mount 107 has a structure that controls the amount of displacement generated by the inertia of the transmission 103 at the start of the vehicle with a constant spring constant value whose rubber is initially determined. However, when the vehicle starts and the normal acceleration, the vibration characteristics transmitted from the transmission 103 to the vehicle body 113 have the opposite characteristics.

That is, during oscillation, the rolling phenomenon generated by the inertia of the transmission 103 is transmitted to the impact force with a relatively large displacement amount, and during normal driving, the transmission 103 is restored to the initial mounting state, so that the vibration with a relatively small displacement amount is random. The frequency is continuously transmitted to the vehicle body 113.

Therefore, when the spring constant of the insulator rubber is high, the transmission rolling displacement is reduced, so that the vibration transmitted to the vehicle body 113 during the start-up is reduced, which improves the driving noise and the driving feeling, but insulates the constant vibration with relatively small amplitude amplitude during normal driving. Since the constant is disadvantageous, the vehicle running noise and running feeling worsen.

On the contrary, when the spring constant of the insulator rubber is low, the vibration of the vehicle is reduced and the driving feeling is improved by insulating the continuous vibration having a relatively small amplitude magnitude during normal driving, but the transmission rolling displacement is not reduced, which is transmitted to the vehicle body 113 when starting. The vibration is increased to make the running feeling of the vehicle worse.

Due to these reasons, there is a limit in securing noise reduction and driving comfort at the same time during oscillation and normal driving.

Therefore, the present invention has been invented to solve the above problems, an object of the present invention, by adding a configuration for the compensation of displacement to the transmission mount mounted between the transmission and the vehicle body in accordance with the engine start, vehicle speed and TPS signal It is to provide a rolling displacement amount correction device and a control method of a vehicle transmission that can be corrected so as to reduce the rolling displacement amount of the transmission to be reduced at the same time the running noise at the time of starting the vehicle and the running noise at the normal driving.

1 is a block diagram of a rolling displacement correction device of a vehicle transmission according to the present invention.

2 is a flowchart illustrating a control method of a rolling displacement correction device of a vehicle transmission according to the present invention.

3 is a mounting state diagram of a conventional vehicle mount.

The present invention for achieving the above object, the power plant consisting of the assembly of the engine and the transmission mounting the engine mount, the rolling mount and the transmission mount to the vehicle body, the rolling displacement of the transmission relative to the longitudinal direction of the vehicle when the vehicle is started A correction cylinder which is hinged in the longitudinal direction of the vehicle body to the transmission side support bracket on the transmission mount, and mounted to an insulator on the vehicle body side via an operating rod; First and second duty solenoid valves mounted on the first and second working pressure pipelines for supplying the working pressure to the correction cylinder, respectively, for controlling the supply and discharge of the working pressure according to a control signal of the ECU; An actuation pressure pump connected to the first and second actuation pressure lines and a main supply line to generate an operating pressure by operating by a control signal of the ECU; An ignition switch for outputting a start signal of an engine to the ECU; A vehicle speed sensor configured to output a vehicle speed signal to the ECU; And a throttle position sensor for outputting an opening degree signal of the throttle valve to the ECU.

The control method for controlling the rolling displacement correction device of the vehicle transmission as described above includes a first step of receiving respective output signals of an ignition switch, a vehicle speed sensor, and a throttle position sensor; A second step of determining whether the engine is in a start-up state from the output signal of the ignition switch and returning to a higher level if the engine is in a start-off state; A third step of determining whether the vehicle is in an accelerated state according to a map set by itself from the output signals of the vehicle speed sensor and the throttle position sensor when the condition of the second step is satisfied; In the third step, if it is determined that the vehicle is in an accelerated state, the duty control of the first and second duty solenoid valves is performed at the same time as the duty displacement of the first and second duty solenoid valves to increase and correct the rolling displacement of the transmission through forward driving of the correction cylinder. A fourth step of driving; In the third step, if it is determined that the vehicle is not in an acceleration state, the duty control of the first and second duty solenoid valves to reduce and correct the rolling displacement amount of the transmission through reverse driving of the correction cylinder, and at the same time, operating pressure pump It characterized in that it comprises a fifth step of driving.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention that can specifically realize the above object will be described.

1 is a configuration diagram of a rolling displacement correction device of a vehicle transmission according to the present invention, the present invention is a power plant (5) consisting of an assembly of the engine 1 and the transmission (3) the engine mount (7), rolling mount (9) and the transmission mount 11 is mounted to the vehicle body 13, and configured to correct the amount of rolling displacement of the transmission 3 in the longitudinal direction of the vehicle when the vehicle starts.

The configuration of the rolling displacement correction device for a vehicle transmission according to the present invention hinges the correction cylinder 23 in the longitudinal direction of the vehicle body 13 to the transmission side support bracket 21 on the transmission mount 11, the correction cylinder The operating rod 25 of the 23 is hinged to the insulator 27 on the vehicle body 13 side.

The first and second operating pressure pipes 31 and 33 for supplying the working pressure to the correction cylinder 23 are first controlled to control the supply and discharge of the working pressure according to the control signal of the ECU 10, respectively. Second duty solenoid valves 35 and 37 are mounted.

In addition, the main supply line (39) connected to the first and second operating pressure line (31, 33) is connected to the operating pressure pump 41, the operating pressure pump 41 is controlled by the ECU (10) It is operated by signal to generate working pressure.

In addition, the ignition switch 43 outputs the start signal of the engine 1 to the ECU 10, the vehicle speed sensor 45 outputting the vehicle speed signal to the ECU 10, and the opening degree signal of the throttle valve. It is provided with the throttle position sensor 47 which outputs to (10).

Here, the correction cylinder 23 is preferably made of an oil cylinder whose operating pressure is oil hydraulic pressure, the oil reservoir tank 49 is provided on the main supply pipe (39).

Referring to FIG. 2, a control method for controlling a rolling displacement correcting apparatus of a vehicle transmission having the above configuration has a configuration such that, first, the ECU 10 has an ignition switch 43 (IGS) and a vehicle speed sensor 45. And each output signal is received from the throttle position sensor 47 (TPS) (S10).

Subsequently, the ECU 10 determines whether the engine 1 is in the ON state from the output signal of the ignition switch 43 (S20). Return to step S10.

In the step S20, when the engine 1 is in the ON state, the ECU 10 may determine that the vehicle is configured according to a map set from the output signals of the vehicle speed sensor 45 and the throttle position sensor 47. It is determined whether the acceleration state. (S30)

In step S30, when it is determined that the vehicle is in an acceleration state, the ECU 10 may increase and correct a rolling displacement amount of the transmission 3 through forward driving of the correction cylinder 23. While controlling the duty solenoid valves 35 and 37, the operating pressure pump 41 is driven to generate the operating pressure.

That is, the first duty solenoid valve 35 is duty controlled in the open direction to supply the working pressure to the correction cylinder 23, and the second duty solenoid valve 37 is the correction cylinder 23. Duty controlled in the CLOSE direction to discharge the hydraulic pressure in the cylinder.

On the other hand, if it is determined in step S30 that the vehicle is not in an acceleration state (ie, a deceleration state or a normal driving state), the ECU 10 transmits the transmission 3 through the reverse driving of the correction cylinder 23. In order to decrease and correct the rolling displacement of the control panel, the duty control of the first and second duty solenoid valves 35 and 37 is performed and the operating pressure pump 41 is driven to generate an operating pressure.

That is, the second duty solenoid valve 37 is duty controlled in the open direction to supply the working pressure to the correction cylinder 23, and the first duty solenoid valve 35 is the correction cylinder 23. Duty controlled in the CLOSE direction to discharge the hydraulic pressure in the cylinder.

Therefore, the present invention, as in the step S40 and step S50, the operating rod through the forward and backward operation of the correction cylinder 23 according to the running state of the vehicle, such as when the vehicle is started or the normal running By variably correcting the rolling displacement amount of the transmission 3 according to the stroke of 25, the rolling displacement amount is reduced in preparation for the stationary state of the vehicle, and the vibration transmitted to each mount is reduced, thereby reducing driving noise. And it improves the driving feeling.

As described above, according to the rolling displacement correction device and control method of the vehicle transmission of the present invention, by adding a configuration for the compensation of the displacement to the transmission mount mounted between the transmission and the vehicle body in accordance with the engine start, vehicle speed and TPS signal By determining the driving state of the vehicle and varying and correcting the rolling displacement of the transmission so that the amount of rolling displacement is reduced, it is possible to reduce driving noise and improve a feeling of shifting when the vehicle starts or runs normally.

Claims (4)

Mounting the power plant consisting of the engine and the transmission assembly to the vehicle body with the engine mount, the rolling mount and the transmission mount, to compensate for the rolling displacement of the transmission relative to the longitudinal direction of the vehicle when the vehicle is started, A correction cylinder which is hinged to the transmission side support bracket on the transmission mount in the longitudinal direction of the vehicle body and mounted to an insulator on the vehicle body side via an operation rod; First and second duty solenoid valves mounted on the first and second working pressure pipelines for supplying the working pressure to the correction cylinder, respectively, for controlling the supply and discharge of the working pressure according to a control signal of the ECU; An actuation pressure pump connected to the first and second actuation pressure lines and a main supply line to generate an operating pressure by operating by a control signal of the ECU; An ignition switch for outputting a start signal of an engine to the ECU; A vehicle speed sensor configured to output a vehicle speed signal to the ECU; A throttle position sensor for outputting an opening degree signal of the throttle valve to the ECU; Rolling displacement correction device of a vehicle transmission comprising a. The method of claim 1, wherein the correction cylinder is A rolling displacement correction device for a vehicle transmission, characterized by comprising an oil cylinder whose operating pressure is oil hydraulic pressure. The method of claim 1, wherein the main supply line Rolling displacement correction device for a vehicle transmission, characterized in that the oil reservoir tank is installed. A first step of receiving each output signal of the ignition switch, the vehicle speed sensor, and the throttle position sensor; A second step of determining whether the engine is in a start-up state from the output signal of the ignition switch and returning to a higher level if the engine is in a start-off state; A third step of determining whether the vehicle is in an accelerated state according to a map set by itself from the output signals of the vehicle speed sensor and the throttle position sensor when the condition of the second step is satisfied; In the third step, if it is determined that the vehicle is in an accelerated state, the duty control of the first and second duty solenoid valves is performed at the same time as the duty displacement of the first and second duty solenoid valves to increase and correct the rolling displacement of the transmission through forward driving of the correction cylinder. A fourth step of driving; In the third step, if it is determined that the vehicle is not in an acceleration state, the duty control of the first and second duty solenoid valves to reduce and correct the rolling displacement amount of the transmission through reverse driving of the correction cylinder, and at the same time, operating pressure pump Driving a fifth step; Control method of the rolling displacement correction device of a vehicle transmission comprising a.