KR100264268B1 - Compulsory starting system of automatic transmission - Google Patents

Abstract

PURPOSE: A forced starting device of an automatic transmission is provided to start a vehicle by moving backward with directly connecting an impeller to an input shaft and a crankshaft in reverse rotation in case of discharge of a storage battery. CONSTITUTION: An automatic transmission starting apparatus comprises an impeller(2) integrated with a fly wheel(1) of a crankshaft; a turbine(3) fluid-coupled with the impeller and inserted to an input shaft(5); and a one-way clutch(7) connecting the turbine to the input shaft in reverse rotation. A torque converter has the impeller and the turbine. The vehicle is started with moving the vehicle backward in case of not starting the vehicle by discharging a storage battery. The starting apparatus is used conveniently in case of not charging, and in discharging the storage battery completely.

Description

Forced starting device of automatic transmission

The present invention relates to a forced starting device of an automatic transmission, and more particularly, by directly connecting the impeller directly connected to the input shaft and the crankshaft of the engine when rotating in the reverse direction, when starting by the start key due to discharge of the battery, The present invention relates to a forced start device of an automatic transmission capable of reversing the vehicle to start the vehicle.

Recently, the number of vehicles equipped with automatic transmissions, which are very convenient for the driver to operate, has been increasing rapidly.

An automatic transmission is a transmission in which a torque converter, a fluid coupling device, and a planetary gear device are usually combined, and a hydraulic control system is used to automatically shift according to operating conditions and engine load. Therefore, there is no clutch in the vehicle with automatic transmission.

2 is a top cross-sectional view of a conventional automatic transmission.

The part shown is a torque converter, which is a fluid coupling of an automatic transmission, which is coupled with a flywheel 1 to a crankshaft (not shown) of the engine, as shown. An impeller 2 to be combined with a turbine 3 facing the impeller 2 to form a closed space, a stator 4 interposed between these two members, and It can be seen largely divided into the input shaft (5), etc., in which the turbine 2 is coupled.

The impeller 2 and the turbine 3 are in contact with each other to form a torque converter, and fluid is filled therebetween, and an outer circumference of the flywheel 1 engages with a driving gear of a starting motor. 6) is installed.

With the above configuration, when the engine is started by the starting motor, the crank shaft of the engine rotates the impeller 2.

A large number of blades are provided inside the impeller 2 to feed the fluid to the turbine 3 side by centrifugal force during rotation.

The turbine 3 has a blade corresponding to the impeller 2 installed therein, and transmits power to the input shaft 5 while rotating by the repulsive force of the fluid flowing from the impeller 2.

The input shaft 5 rotates the output shaft at a torque and rotational speed in accordance with the operating conditions and the load on the engine through a plurality of planetary gear units in the transmission.

In addition, the output shaft (not shown) rotates the propulsion shaft (not shown), and the propulsion shaft drives the wheels (not shown) of each part.

As such, the vehicle with the automatic transmission is driven while the wheels rotate while the power of the engine is transmitted to the propulsion shaft through the fluid coupling of the automatic transmission.

However, a conventional vehicle equipped with an automatic transmission has a problem in that it cannot start by a forced start method that pushes the vehicle when the battery is discharged.

This is because the forced starting method requires the engine to be driven through the propulsion shaft and the input shaft by rotating the wheels first, in the opposite direction of the power flow. At low speed, the fluid coupling between the turbine 3 and the impeller 2 is performed. The power transmission efficiency is so low that the engine 3 cannot be started because the turbine 3 does not rotate the impeller 2 by pushing the vehicle.

The present invention has been made in order to solve the problem with a conventional vehicle equipped with an automatic transmission, the impeller directly connected to the crank shaft by the input shaft rotated by the propulsion shaft is rotated by the propulsion shaft when the propulsion shaft is rotated so that the engine is driven, The present invention relates to a forced start device of an automatic transmission capable of forcibly starting the engine by reversing the vehicle when it is impossible to start the engine by the discharge key.

1 is a top cross-sectional view of an automatic transmission provided with a forced starting device of the automatic transmission of the present invention.

2 is a top cross-sectional view of a conventional automatic transmission.

* Explanation of symbols for main parts of the drawings

1: flywheel 2: impeller

3: turbine 4: stator

5: Input shaft 5a: Extension part

6: ring gear 7: one-way clutch

Forced starting device of the automatic transmission of the present invention for achieving the object as described above, in the torque converter comprising an impeller integrated into the flywheel of the crankshaft and a turbine in fluid coupling with the impeller and fixed to the input shaft, the turbine It comprises a one-way clutch for connecting the input shaft in the reverse rotation direction.

By the forced starting device of the automatic transmission of the present invention including such a one-way clutch, when starting is not possible due to the discharge of the battery, when the vehicle is pushed in the reverse direction to make the propulsion shaft reverse rotation, the one-way clutch is interlocked with the propulsion shaft to reverse By connecting the turbine to the rotating input shaft, the power is transmitted in the order of the propulsion shaft input shaft turbine and the crank shaft from the rotating wheel to start the engine.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a partial cross-sectional view of an automatic transmission provided with a forced starting device of an automatic transmission according to an embodiment of the present invention.

As shown in the present embodiment, the automatic transmission includes a flywheel 1 installed and rotated on a crankshaft (not shown), which is a drive shaft of an engine, an impeller 2 coupled to the flywheel 1, and an impeller 2. It comprises a turbine (3) and the input shaft (5) which is a rotation axis of the turbine (3) facing the.

The flywheel 1 is a disc having a predetermined weight, and the engine is rotated by the driving force to compensate the deviation of the power according to each stroke of the engine by the inertia force to uniformly rotate the crankshaft.

The impeller 2 is a donut-shaped steel sheet having a blade therein, and strongly flows the fluid stored therein to the turbine 3 side by using a centrifugal force while rotating together with the flywheel 1.

Turbine (3) is a fluid coupling action with the impeller (2), has a shape corresponding substantially to the impeller (2), the input shaft which is a drive shaft of the automatic transmission while the impeller (2) is rotated by the flowing fluid ( 5) Rotate

And, between the impeller 2 and the turbine 3, the blade-shaped stator 4 with many blades is built in to smooth the fluid flow between the impeller 2 and the turbine 3.

The automatic transmission including the above configuration is driven by the hydraulic control circuit according to the load and the speed of the engine while the input shaft 5 is driven, and the internal driving gear is combined with the appropriate torque and rotational speed according to the current driving situation. It acts to deliver the propulsion shaft.

On the other hand, the input shaft 5 has an extension part 5a extending toward the flywheel 1 side, and this extension part 5a is a circle capable of transmitting power only in the reverse rotation direction to the center of the flywheel 1. The way clutch 7 is interposed. That is, the one-way clutch 7 serves as a bearing when the flywheel 1 and the input shaft 5 rotate in the forward direction, but transfers the rotational force of the input shaft 5 to the flywheel 1 when the reverse rotation is performed. Serve as a driving medium. Therefore, the one-way clutch 7 transmits rotational force from the input shaft 5 to the flywheel 1 only when the input shaft 5 is reversely rotated.

The operation of the present invention by the above configuration is made as follows.

In normal operation, when the engine is operated, the flywheel 1 coupled to the crankshaft rotates, and the impeller 2 incorporated in the flywheel 1 rotates simultaneously.

The impeller 2 strongly flows the fluid as an inner blade to rotate the turbine 3 facing the centrifugal force of the fluid.

Accordingly, the turbine 3 rotates the input shaft 5 in a normal state and transmits power to an output shaft not shown.

In addition, when normal starting is not possible due to the discharge of the battery, when the vehicle is pushed backward, the reverse rotational power of the wheel is transmitted to the input shaft 5 through the output shaft through the propulsion shaft.

At this time, the one-way clutch 7 installed in the extension portion 5a of the input shaft 5 connects the flywheel 1 to the input shaft 5 so that the rotational force of the input shaft 5 is transmitted to the flywheel 1. .

Therefore, the flywheel 1 reversely rotates with the rotational force of the input shaft 5, and simultaneously rotates the crank shaft to drive the engine. Through this overshoot, the present invention can forcibly start the engine by reversing the vehicle.

According to the present invention as described in detail above, when the automatic transmission vehicle can not be started by the discharge of the storage battery can start the engine by reversing the vehicle, it is very convenient for the driver when the battery is completely discharged in the place where charging is impossible.

The present invention can be variously modified and implemented by those skilled in the art without departing from the gist of the invention as claimed in the claims, and therefore the invention is not limited to the specific embodiments described above. Do not.

Claims (1)

A flywheel coupled to the crankshaft of the engine, an impeller integrated with the flywheel, a turbine fluidly coupled to the impeller, an input shaft to which the turbine is fitted and fixed, an extension of the input shaft and a depression in the center of the flywheel And an one-way clutch interposed between the extension portion inserted into the negative portion and the flywheel depression portion and the extension portion of the input shaft such that the flywheel is interlocked only in the reverse rotation direction by the input shaft. Forced start device.