KR0178948B1 - Viblation absorbing device of engine and t/m - Google Patents

Abstract

The present invention relates to a vibration reduction device of an engine and an automatic transmission mounted on a vehicle body, and may be used regardless of the type or performance of the engine and the transmission by improving the structure of the vibration reduction mounting, and for all driving conditions of the vehicle. An object of the present invention is to provide a vibration reduction device for reducing vibration generated in an engine and an automatic transmission, and to provide an appropriate vibration reduction performance, the body-side supporting part being fixed to the vehicle body, and the main body of the engine and the automatic transmission. It is composed of a main body support that is fixed to the, the main body support portion is formed with a cylinder mounted with a spring therein, the body side support portion is provided with a damper equipped with a piston portion inserted into the cylinder for reciprocating movement It provides a vibration reduction device of the engine and automatic transmission.

Description

Vibration Reduction Device for Engine and Automatic Transmission

1 is a schematic cross-sectional view of a damper mounted to an engine and an automatic transmission in accordance with the present invention.

2 is a schematic block diagram showing a control relationship between a hydraulic control system of an automatic transmission and a damper control solenoid valve according to the present invention.

3 is a schematic hydraulic circuit diagram according to the invention.

4 is a schematic drawing showing the position of a damper mounted to an engine and an automatic transmission in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

1: damper 2: body

3: Body side support part 4: Engine or transmission body

5 main body support 6 spring

7: cylinder 8: piston

9: A port 10: B port

[Field of Invention]

The present invention relates to a vibration reduction device for an engine and an automatic transmission mounted on a vehicle body, and more particularly, to a vibration reduction device for an engine and an automatic transmission using a hydraulic control system of the automatic transmission.

[Prior art]

In general, the vibration of the engine being driven includes the periodic change of the center position due to the vertical movement of the piston and the connecting rod, the inertial force of the reciprocating portion occurring in the cylinder axial direction, and the connecting rod swinging from the left and right of the crankshaft. There is an inertia force and a periodic change in the rotational force applied to the crankshaft, and these causes overlap and vibrations in the left and right and up and down directions are generated.

In addition, the vibration of the engine is larger as the engine with fewer cylinders, and the vibration is greater at high speed rotation than at low speed rotation. Therefore, when an automobile engine is supported by a chassis frame or a body, an engine mounting, which is a dustproof device by an elastic body, is always installed, and such engine mounting has the ability to withstand the weight of the engine while absorbing and absorbing the aforementioned vibrations. The location, number, and structure of the engine mounting should be designed in consideration of the engine type, chassis, and body structure.

In addition, the vibration generated in the vehicle body, in addition to the engine, there are vibrations due to the shock due to the shift of the transmission lever and the impact due to the gear engagement when the automatic transmission A / T is shifted.

[Technical problem to be achieved by the present invention]

However, the conventional vibration reduction device uses a mounting made of rubber having a certain performance as described above, there is a problem that a new development rubber has to be developed every time the model or performance of the engine and automatic transmission, In addition, there is a problem that does not have a proper vibration reduction performance for all driving conditions of the vehicle does not properly reduce the vibration generated in the engine and the drive system.

Therefore, the present invention has been proposed to solve such a conventional problem, and can be used regardless of the type or performance of the engine and the transmission by improving the structure of the vibration reducing mounting, and also suitable for all driving conditions of the vehicle. An object is to provide vibration reduction performance.

[Configuration and Function of Invention]

In order to achieve the above object, the present invention is a vibration reduction device for reducing vibration generated in the engine and the automatic transmission, comprising a vehicle body side support portion fixed to the vehicle body, and a main body support portion fixed to the body of the engine and automatic transmission The main body support portion is formed with a cylinder mounted with a spring therein, and the body side support portion is provided with a damper equipped with a piston portion is inserted into the cylinder for reciprocating movement of the engine and automatic transmission It provides a vibration reducing device.

In addition, the A and B ports are formed at the lower end of the cylinder of the main body support portion as two flow paths communicating with both ends, and each port is connected to a hydraulic control system inside the automatic transmission to one port as necessary. Preferably, hydraulic pressure is provided to move the damper piston from side to side.

In addition, each of the flow path ports is preferably provided in the solenoid valve controlled by the TCU.

In addition, the port A is provided with a line pressure at the shift lever D range, and the port B is provided with a line pressure at the shift lever R range.

EXAMPLE

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention, the same reference numerals are assigned to the same parts as those cited in the prior art, in the present embodiment, to avoid duplication of description again Do not explain.

1 is a schematic cross-sectional view of a damper mounted on an engine and an automatic transmission according to the present invention, and FIG. 2 is a schematic block diagram showing a control relationship between a hydraulic control system and a damper control solenoid valve of an automatic transmission according to the present invention. 3 shows a schematic hydraulic circuit diagram according to the invention, and FIG. 4 is a schematic diagram showing the position of a damper mounted to an engine and an automatic transmission according to the invention.

First, according to the present invention, in order to reduce vibration of the engine and the automatic transmission, as shown in FIG. 1, a damper 1 using the hydraulic control system of the automatic transmission is provided.

The damper 1 is composed of a self supporting side 3 fixed to the vehicle body 2 and a main body supporting part 5 fixed to the main body 4 of the engine and the automatic transmission. In addition, the main body support portion 5 is formed with a cylinder 7 mounted with a spring 6 therein, and the body portion support portion 3 is a piston portion 8 inserted into the cylinder 7 to reciprocate. ) Is installed. Furthermore, two flow paths, namely, A port 9 and B port 10, which are connected to both ends, are formed at the lower end of the cylinder 7 of the main body support 5, respectively. ) Is connected to the hydraulic control system inside the automatic transmission to provide hydraulic pressure to one port as necessary to move the piston 8 of the damper 1 to the left and right.

On the other hand, the flow path of the damper 1 is controlled by a duty solenoid valve or a linear solenoid valve, and this control relationship is schematically shown as a block diagram in FIG.

As shown, signals from the transmission lever, the vehicle speed, the opening of the throttle valve, the engine torque, and the accelometer that can measure vibrations in the engine and the transmission are transmitted to the transmission control unit (hereinafter referred to as TCU). And the TCU controls the hydraulic control system of the automatic transmission based on the transmitted signal and the gear coupling signal of the lever, and also transmits a damper control signal to the damper control solenoid valve to control the flow path of the damper. Done.

Next, a schematic hydraulic circuit diagram according to the present invention is shown in FIG. 3, and the duty solenoid valve 11 is connected to the A port 9 and the B port 10 respectively connected to the damper 1 from the hydraulic control system in the automatic transmission. ) Is opened and closed. In addition, the A port 9 is provided with a line pressure at the shift lever D range, which reduces the flow of the engine and the transmission to the front of the vehicle during the upshift from the first gear to the second gear. For sake. On the contrary, the B port 10 is provided with the line pressure at the shift lever R range, on the contrary, when the downshift is shifted from the second to the first stage, the flow of the engine and the transmission is generated to the rear of the vehicle, that is, toward the driver's seat. to be.

4 schematically shows the position of a damper mounted in an engine and an automatic transmission in accordance with the present invention. According to the present invention, when the engine and the transmission are arranged side by side in the transverse direction of the vehicle body, the engine is supported on the front and rear and side surfaces of the engine and the transmission. The engine and the transmission are directed toward the driver's seat, that is, the first damper 21, and the load is applied to the second damper 22 when the vehicle is driven in the R range. Therefore, the hydraulic pressure is operated to the A port 9 of the first damper 21 and the fourth damper 24 during the D range and the upshift, and the second damper 22 and the second range during the R range and the downshift. By operating the hydraulic pressure to the B port 10 of the fourth damper 24 to reduce the vibration of the engine and the automatic transmission.

[Effects of the Invention]

As described above, according to the vibration reduction device according to the present invention, by providing a damper using the hydraulic pressure from the hydraulic control system in the automatic transmission, it can be used regardless of the type and performance of the engine or the transmission, Vibration under operating conditions also has an effect that can be appropriately reduced.

The present invention has been illustrated and described above with respect to certain preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention belongs without departing from the spirit of the invention as claimed in the claims. Anyone with ordinary knowledge in the field will be able to make various changes.

Claims (4)

A vibration reducing device for reducing vibration generated in an engine and an automatic transmission, the vibration reducing device comprising: a vehicle body side support part fixed to a vehicle body and a body support part fixed to a main body of an engine and an automatic transmission, wherein the body support part has a spring therein; The mounted cylinder is formed, and the vibration reduction device of the engine and automatic transmission, characterized in that the vehicle body side support portion is provided with a damper having a piston portion inserted into the cylinder for reciprocating movement. According to claim 1, wherein the lower end of the cylinder cylinder of the main body support portion is formed in each of the two flow paths A port and B port, each port is connected to the hydraulic control system inside the automatic transmission as necessary The vibration reduction device of the engine and the automatic transmission, characterized in that to provide hydraulic pressure to one port to move the damper piston from side to side. The vibration reduction device of the engine and the automatic transmission according to claim 2, wherein each of the flow path ports is provided in a solenoid valve controlled by a TCU. The engine and the automatic transmission according to claim 2 or 3, wherein the port A is provided with a line pressure at the shift lever D range, and the port B is provided with a line pressure at the shift lever R range. Vibration reduction device.