KR19980049851A - How to change control variables to calculate basic ignition timing in idle state - Google Patents

Abstract

The present invention relates to a method for changing a control variable for calculating the basic ignition timing in the idle state, and to a method for changing the control variable for calculating the basic ignition timing in the idle state. Determining whether the vehicle is in an idle state or driving; Controlling the basic ignition timing to a certain constant when the engine state is starting by the electronic control apparatus, and controlling the basic ignition timing using the engine speed and a map when the engine state is in operation; In addition, when the engine is in the idle state, comparing the water temperature with a specific constant and comparing the size with a specific constant capable of changing the cooling water temperature; If the cooling water temperature is greater than a certain constant, since the change in the cooling water temperature is not large, the basic ignition timing calculation is performed using the engine speed and the map. If the cooling water temperature is small, the basic ignition timing is calculated using the cooling water temperature. ; Even in the idling state, the basic ignition timing of the idling state is calculated by using the engine speed and the map that change the engine state more actively than the water temperature, where the variable change is small. The present invention provides a method of changing a control variable for calculating the basic ignition timing in an idle state having an effect of stabilizing the engine speed in the idle state.

Description

How to change control variables to calculate basic ignition timing in idle state

The present invention relates to a control parameter change for calculating the basic ignition timing in idle state. More specifically, the basic ignition timing is determined by the water temperature, and when the temperature reaches a certain temperature, The present invention relates to a method of changing a control variable for calculating an ignition timing in an idle state by improving the riding comfort and increasing the stability of an idle state by changing and calculating the calculated variable.

In recent years, many automobiles rely on electronic control so that the performance of the vehicle depends on the electronic control method.

In particular, the awareness of the environment is increasing, and the age of moving only with direction is past, and automobiles are becoming part of the living environment.

As a result, electronic controls that do not take into consideration the ride quality or driving ability of a car are losing value.

Most recently, the vehicle has been controlled as a specific constant or a specific variable factor that greatly depends on the driving performance in the electronic control apparatus in the vehicle in consideration of the riding comfort, the driving characteristics, and the environment due to the exhaust gas.

That is, the determination of the ignition timing having a great influence on the operability and the exhaust gas has been controlled to a specific value as described above.

As an example, the basic ignition timing at startup is determined using an appropriate value, or as another example, the ignition timing is determined by calculating a function relating to the cooling water temperature at startup.

As shown in FIG. 1, the conventional basic ignition timing calculation is as follows.

When the electronic control device calculates the basic ignition timing, it is determined whether the engine is starting, idling, or operating (F20).

When the state of the engine is starting, the electronic control device determines that the basic ignition timing is controlled to a certain constant (F30), and when the engine state is running, the basic ignition timing is controlled using the engine speed and the map. (F40).

If the engine is in the idle state, the basic ignition timing is calculated using the water temperature (F50).

However, the above-described conventional technique simply calculates the basic ignition timing by the water temperature in the engine idle state, so that when the water temperature reaches a certain value, the water temperature change amount is small so that the basic ignition timing does not change, so that the driver's comfort or exhaust gas, There is a problem in efficiency.

Accordingly, an object of the present invention is to solve the above-mentioned problems, and in the conventional idle state, the basic ignition timing calculation based on the coolant temperature is calculated by calculating the ignition timing using a variable having a large amount of change, thereby reducing the driver's ride comfort and exhaust gas. It is to provide a control variable change method for calculating the basic ignition timing in the idle state that solves problems such as fuel consumption and fuel saving.

As a means for achieving the above object, the characteristics of the control variable change method for calculating the basic ignition timing in the idle state, the electronic control device determines whether to start the engine state, the idle state, the operation state when calculating the basic ignition timing Steps; Controlling the basic ignition timing to a certain constant when the engine state is starting by the electronic control apparatus, and controlling the basic ignition timing using the engine speed and a map when the engine state is in operation; In addition, when the engine is in the idle state, comparing the water temperature with a specific constant and comparing the size with a specific constant capable of changing the cooling water temperature; If the cooling water temperature is greater than a certain constant, since the variation of the cooling water temperature is not large, the basic ignition timing calculation is performed using the engine speed and the map. If the cooling water temperature is small, the basic ignition timing is calculated using the cooling water temperature.

1 is a general basic ignition timing control block diagram,

2 is a general basic ignition timing control flowchart;

3 is a basic ignition timing control flowchart according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The most preferred embodiments in which those skilled in the art can easily implement the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a block diagram related to general ignition timing control includes: a coolant temperature sensor 10 that checks and outputs a temperature of coolant that maintains engine heat; A map sensor 20 which indirectly detects an intake air amount caused by a vacuum variation of the intake manifold; A crank angle sensor 30 for detecting the rotation speed of the engine; An electronic control device (40) for receiving and processing detection signals from the sensors and outputting control signals; A plug 50 for receiving a control signal from the electronic control device 40 and discharging it; It consists of an engine 60 that generates power by burning an internal mixer by spark discharge of the plug 50.

With reference to FIG. 1 and FIG. 2 described above, the operation of changing the control variable for calculating the basic ignition timing in the idle state according to the embodiment of the present invention will be described.

When calculating the basic ignition timing, the electronic control device 40 determines whether the engine is starting, idling, or driving (S20).

When the state of the engine is starting in the determination of the electronic control device 40, the basic ignition timing is controlled to a specific constant (S30), and when the engine state is in operation, the basic ignition timing is determined with the crank angle sensor 30. Control using the engine speed and map data using the map sensor 20 (S40).

In addition, when the state of the engine is in the idle state, the cooling water temperature using the cooling water temperature sensor 10 is compared with a specific constant, and the size is compared with a specific constant capable of changing the cooling water temperature (S50).

If the cooling water temperature is greater than a certain constant, since the variation of the cooling water temperature is not large, the basic ignition timing calculation is performed using the engine speed and the map (S60). If the cooling water temperature is small, the basic ignition timing is calculated by the cooling water temperature ( S70).

When the electronic control device obtains the basic ignition timing, the ignition data is output to the plug 50, and the plug 50 generates spark discharge to the compressed mixer inside the engine 60 to obtain power.

As described above, in the exemplary embodiment of the present invention, the basic ignition timing of the driver is calculated by calculating the basic ignition timing of the idle state by using the engine speed and the map in which the variable of the variable in the idle state is more actively changed in the engine state than in the water temperature, which is less variable. The present invention provides a method of changing control variables for calculating the basic ignition timing in idle state, which has an effect of stabilizing the engine speed in idle state and protecting the environment by improving ride comfort and reducing exhaust gas.

Claims (1)

Method for changing a control variable for calculating the basic ignition timing in the idle state The electronic control device, when calculating the basic ignition timing, the step of determining whether the engine is starting, idling or operating; Controlling the basic ignition timing to a certain constant when the engine state is starting by the electronic control apparatus, and controlling the basic ignition timing using the engine speed and a map when the engine state is in operation; In addition, when the engine is in the idle state, comparing the water temperature with a specific constant and comparing the size with a specific constant capable of changing the cooling water temperature; If the cooling water temperature is greater than a certain constant, since the variation of the cooling water temperature is not large, calculating the basic ignition timing using the engine speed and the map and calculating the basic ignition timing with the cooling water temperature if the cooling water temperature is small. How to change the control parameters for calculating the basic ignition timing during idle conditions.