KR19990009146A - How to start engine of vehicle - Google Patents

Abstract

The present invention relates to a method for starting an engine of a vehicle. When the engine start switch provided in the vehicle is pressed, the engine outputs a predetermined value after determining whether to start the engine according to the condition of the vehicle and starting the engine by operating the starting motor. When the thrust is over, the starter motor is stopped so that the case of starting again due to excessive operation or incomplete start of the starter motor is prevented.

As described above, the present invention provides a method for starting an engine of a vehicle, the method comprising: detecting a clutch and a gear state when a driver turns on a start switch; Controlling the engine operation-related device to start the engine when the clutch is released or the gear is in a neutral state; If the engine outputs a constant torque is made to stop the operation of the starting motor.

Description

How to start engine of vehicle

The present invention relates to an engine start of a vehicle, and more particularly, when the engine start switch provided in the vehicle is pressed, the torque is output from the engine after determining whether to start the engine according to the condition of the vehicle and starting the engine by operating the starter motor. When the thrust is greater than a certain value, the starting motor is stopped, and thus, the engine starting method of the vehicle to prevent the case of starting again due to excessive operation or incomplete start of the starting motor.

In general, in order to start a car, inserting a car key into a key box and rotating it in the start mode causes the power of the battery to be supplied to the generator to operate the generator, and the engine is started by supplying power from the generator to the engine. It is.

In the engine starter of the related art, when the driver turns on the start switch SW, as shown in FIG. 1, the starter motor M is driven by receiving power from the battery BAT.

Only when the start switch SW provided in this manner is maintained at the start state, the battery BAT voltage is supplied and the start motor M is driven, thereby starting the vehicle.

However, such a conventional engine start of the vehicle has a problem in that the motor may be damaged due to a driver's mistake since the start motor operates only when the key switch is necessarily at the start position.

Therefore, the present invention is to improve the problems of the prior art described above, when pressing the engine start switch provided in the vehicle to determine whether to start or not according to the conditions of the vehicle and start the engine by operating the starter motor torque output from the engine It is an object of the present invention to provide a method for starting an engine of a vehicle that prevents a case in which the starting motor must be restarted due to excessive operation of the starting motor or incomplete starting because the starting motor is stopped when the thrust exceeds a predetermined value.

The engine starting method of the vehicle for achieving the above object of the present invention comprises the steps of detecting the clutch and gear state when the driver turns on the start switch; Controlling the engine operation related device to start the engine when the clutch is released or the gear is in a neutral state; When the engine outputs a predetermined torque is characterized in that the step of stopping the operation of the starting motor.

1 is a block diagram of a conventional engine start apparatus of a vehicle.

2 is a block diagram of an engine starter of a vehicle for implementing the present invention.

3 is a flowchart of an engine starting process of a vehicle according to the present invention;

Explanation of symbols for the main parts of the drawings

100 control unit 101 torque sensor

102 engine RPM sensor 103 clutch switch

104: gear position detection unit 105: engine start switch

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

Figure 2 is a block diagram of a start control device of a vehicle for implementing the present invention, the torque sensor 101 for detecting the torque of the engine as shown therein; An engine RPM sensor 102 for detecting an engine speed; A clutch switch 103 for detecting whether the clutch is operated; A gear position detecting unit 104 for detecting a position of a gear; An engine start switch 105; A control unit (100) for generating a start control signal in response to the signal detected from each unit; The transistor Q is configured to drive the starter motor M according to a control signal of the controller 100.

3 is a flowchart of an engine starting process of a vehicle according to the present invention. As shown in FIG. 3, if the user wants to turn on the ignition switch after turning on the ignition switch, whether the RPM of the current engine is greater than or equal to the set value (a). Detecting; Detecting a state of a clutch when the detected RPM is equal to or greater than a set value; Controlling a device (Injector, Ignitor, Fuel Pump, etc.) related to engine operation when the clutch is detached or the gear is in a neutral position; Driving a starting motor; The torque of the engine is detected (TQ) and the driving of the starting motor is stopped when the torque is equal to or larger than the set value (b).

If described in detail with reference to the accompanying drawings the operation of the present invention made as follows.

First, when the driver operates the engine start switch 105 installed in the vehicle, the driver determines whether to start the vehicle according to the condition of the vehicle, and starts the engine by driving the starter motor M. FIG.

That is, when the ignition switch IG is turned on and the start switch 105 is turned on, the engine RPM is detected through the engine RPM sensor 102. That is, during engine operation, it is determined whether the RPM of the engine is equal to or greater than a predetermined value (a) in order to prohibit cranking.

If the engine start switch 105 is input when the clutch is detached or the gear state is neutral and the engine RPM is lower than a predetermined value, the engine start control 105 is performed while controlling the devices (Injector, Igniter, Fuel Pump, etc.) related to engine operation. By turning on the transistor Q, the starter motor M is driven.

In this way, the torque output from the engine after the operation of the starter motor M is detected through the torque sensor 101. If the detected torque is equal to or greater than the predetermined value b, the operation of the starter motor M is stopped to complete the start.

As described above, in the present invention, when the engine start switch provided in the vehicle is pressed, it is determined whether to start the engine according to the condition of the vehicle, and after starting the engine by operating the starting motor, the torque output from the engine is thrust to a predetermined value or more. In this case, since the starter motor is stopped, it is possible to prevent the case in which the starter is restarted due to excessive operation or incomplete start of the starter motor.

Claims (1)

Detecting a clutch and gear state when the driver turns on the start switch; Controlling the engine operation related device to start the engine when the clutch is released or the gear is in a neutral state; Stopping the operation of the starting motor when the engine outputs a predetermined torque.