KR20010059041A - Device and method for controlling an engine stop and start of vehicle - Google Patents

Abstract

PURPOSE: A device and a method for controlling stop and start of an engine are provided to prevent needless fuel dissipation and air pollution caused by idle state for a long time through stopping the engine by the idle state and starting the engine by stepping on an accelerator pedal. CONSTITUTION: In an on state of an engine, an ECU(Electric Control Unit) decides on state of an engine stopping switch signal by a traffic jam. Then, the ECU stops the engine. Herein, the ECU decides inclined state of a road in the stopped state of the engine. Then, a hand brake unit is operated for preventing a vehicle from being slipped. In case of an on state of an accelerator pedal switch, the ECU decides a driver stepping on an accelerator pedal to travel a vehicle. Thus, the ECU operates a key switch to start the engine while controlling the hand brake to release from a locked state. Therefore, the driver drives the vehicle.

Description

How to control engine stop and start control of a vehicle {DEVICE AND METHOD FOR CONTROLLING AN ENGINE STOP AND START OF VEHICLE}

The present invention relates to an apparatus and method for controlling engine stop and start of a vehicle, and more particularly, to stop the engine when the vehicle is stopped while driving and to press the excel pedal when driving the vehicle so that the vehicle can be started while the vehicle is stopped to prevent unnecessary fuel consumption during a stall. And an apparatus and method for controlling engine stop and start of a vehicle to prevent environmental pollution.

In general, the vehicle is operated in an idle state to prevent fuel consumption due to the high load of the engine when the vehicle is stuck due to traffic jams.In this case, the idle state is supplied with only the basic injection amount of fuel to the engine without the accelerator pedal being pressed. It is a state.

However, when the vehicle is idle for a long time, the fuel consumption becomes large when the idle state is maintained, and the driver is choosing a method of reducing fuel consumption by maintaining a neutral state without load on the engine, whether manual or automatic.

As such, when the vehicle is idle for a long time due to a traffic jam while driving, a lot of fuel is consumed. Therefore, in order to prevent fuel consumption and to prevent high load on the engine, the vehicle is switched to a neutral state instead of an idle state to stop the vehicle. Therefore, the vehicle has a problem that causes unnecessary operation and damage to the device due to the neutral conversion.

Accordingly, an object of the present invention is to provide an engine stop / start switch in a vehicle to stop the engine when the engine idling state is maintained due to a long stop due to congestion due to a traffic jam while driving the vehicle, and then the engine is started when the accelerator pedal is pressed. This is to prevent unnecessary fuel consumption and environmental pollution caused by idle state for a long time.

1 is a control block diagram of an engine stop and start control apparatus for a vehicle of the present invention;

Figure 2 is a flow chart of the engine stop and start control method of the vehicle of the present invention.

The present invention provides a key switch for starting the engine to realize the above object; An engine stop and start switch; An accelerator pedal switch for detecting an operation state of the accelerator pedal; A slope sensor for detecting a slope of the vehicle; An electronic controller for controlling signals sensed by the switches and sensors by a preset program and outputting a controlled signal; An engine driving control unit driven by a control signal output from the electronic control apparatus; It consists of a side brake control part.

Another embodiment of the present invention includes the steps of: starting the engine, and determining whether the engine stop switch signal is input in the state of determining whether the engine is running; Stopping the engine when the engine stop signal is input in the step; If the engine is stopped in the step, determining whether the vehicle is on a slope; Actuating the side brakes when in the ramp at the step; If the side brake is activated in the above step, determining whether the accelerator pedal switch is activated; When the accelerator pedal switch is operated in the above step, the engine is started, and if the side brake is applied, the step of releasing is characterized in that it is made.

Therefore, according to the present invention, when the engine stop switch is operated due to the congestion while the engine is running, the engine is stopped and the side brake is operated when the engine is in the inclined state in the engine stop state, and then the engine is started when the accelerator pedal switch is operated. If it is stuck, it can be operated while being released, thereby reducing fuel consumption due to congestion and suppressing emission of exhaust gas, thereby preventing environmental pollution.

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

1 is an engine stop and start control block diagram of a vehicle of the present invention, including a key switch 10 for starting an engine; An engine stop and start switch 11; An accelerator pedal switch 12 for sensing an operation state of the accelerator pedal; An inclination sensor 13 for detecting an inclination of the vehicle; An electronic controller (14) for controlling signals sensed by the sensors by a preset program and outputting a controlled signal; An engine driving control unit 15 driven by a control signal output from the electronic controller 14; It is comprised by the side brake control part 16.

2 is a flowchart of a method for controlling engine stop and start of the vehicle according to the present invention, comprising: determining whether the start is on; Determining (21) whether the engine is in operation in step (20); Determining (22) whether an engine stop switch signal has been input in step (21); Stopping the engine (23) if an engine stop signal has been input in the step (22); If the engine is stopped in step 23, determining whether the vehicle is on a ramp 24; If on a ramp in step 24, actuating a side brake; If the side brake is activated in step 25, determining whether the accelerator pedal switch is activated (26); If the accelerator pedal switch is activated in step 26, the engine is started, and if the side brake is engaged, step 27 is performed.

The present invention made as described above determines whether the vehicle is turned on (step 30). It is determined whether the engine is started and the engine is in operation (step 31).

Subsequently, the electronic controller 14 determines whether the engine stop switch signal is turned on in a state of congestion due to the traffic jam (step 32). If the engine stop switch 11 is not turned on, the engine is continuously operated. On the other hand, if the engine stop switch 11 is turned on, the engine is stopped (step 33).

In the state of stopping the engine as described above, the electronic control device 14 determines whether the vehicle is located on the ramp through the ramp sensor 13 (step 34), and if it is not located on the ramp, the engine is stopped as it is. If the vehicle is located on the ramp, the side brake section 16 is activated to activate the side brake and stop while not slipping on the ramp (step 35).

Subsequently, the traffic jam is released to determine whether the accelerator pedal switch 12 has been operated to start the driver (step 36). At this time, if the accelerator pedal switch 12 is not on, the state of congestion continues, and the engine is kept in a stopped state. On the other hand, if the accelerator pedal switch 12 is on, the accelerator pedal is released and the driver tries to drive the accelerator pedal. The electronic controller 14 starts the engine by starting the key switch 10 and judges whether the side brake is engaged, and controls the side brake unit 16 when the side brake is applied. The vehicle releases and resumes operation (step 37).

As described above, in the present invention, when the vehicle is stopped due to congestion while the vehicle is running, the engine is stopped by operating the engine stop switch in which the vehicle is idle, and when the driving is performed again, the accelerator pedal switch is automatically turned on. By allowing the engine to run by driving, it is possible to prevent fuel consumption due to idling during vehicle congestion and to prevent emission of exhaust gas, thereby providing an effect of preventing environmental pollution.

Claims (5)

A key switch for starting the engine; An engine stop and start switch; An accelerator pedal switch for detecting an operation state of the accelerator pedal; A slope sensor for detecting a slope of the vehicle; An electronic controller for controlling signals sensed by the switches and sensors by a preset program and outputting a controlled signal; An engine driving control unit driven by a control signal output from the electronic control apparatus; An engine stop and start control device for a vehicle, characterized by comprising a side brake control unit. Determining whether an engine stop switch signal is input while the engine is turned on and the engine is in operation; Stopping the engine if the engine stop signal is on in the step; If the engine is stopped in the step, determining whether the vehicle is on a slope; Actuating the side brakes when in the ramp at the step; If the side brake is activated in the above step, determining whether the accelerator pedal switch is activated; If the accelerator pedal switch is operated in the above step, the engine is started, if the side brake is applied to the engine stop and start control method of the vehicle, characterized in that consisting of. 3. The engine stop and start control method for a vehicle according to claim 2, wherein if the engine stop signal is not turned on in the engine stop signal on input determination step, driving continues. 3. The engine stop and start control method for a vehicle according to claim 2, wherein the engine is stopped if the vehicle is not inclined at the step of determining the inclined road. The method of claim 2, wherein the engine is stopped when the accelerator switch is not turned on in the determining of the accelerator pedal switch.