KR19990010357A - Ignition Timing Control Device - Google Patents

Abstract

The present invention provides an ignition timing correction control device for correcting a reference ignition timing calculated corresponding to the engine speed and the opening amount of the throttle valve so as to correspond to the difference between the engine speed and the variation of the engine speed over time. It is about. That is, it is based on the difference between the engine speed sensor 1 detecting the engine speed RPM and the filtered engine speed RPM-MOY and the current engine speed RPM. Engine electronics for correcting the MOY _i-1 , and then correcting the reference ignition timing RPM-MOY _i-1 in proportion to the variation amount DRPM of the engine speed RPM and generating an ignition signal corresponding thereto. By configuring the control device 2 and the distributor 3 which receives the ignition signal supplied from the engine electronic control device 2 and regulates the current flowing through the ignition coil 4, the ignition timing of the ignition plug is optimal. It is possible to stabilize the operation of the engine as well as improve the ride comfort of the vehicle by adjusting to the state.

Description

Ignition Timing Control Device

The present invention relates to a ignition timing correction control device, and more particularly, a reference ignition timing calculated to correspond to the engine speed detected by the engine speed sensor and the opening amount of the throttle valve detected by the TPS. The present invention relates to an ignition timing compensation control system capable of correcting corresponding to a difference value of an engine speed and a change amount of an engine speed according to the engine speed.

In the conventional vehicle, the operation of adjusting the ignition timing of the spark plug is as follows. First, the engine speed (RPM) detected by the engine speed sensor 1 and the TPS (6: the opening amount of the throttle valve, that is, the sensor detecting the load amount) and the opening amount of the throttle valve (load amount) The engine electronic control apparatus 2, which has received the information about the _{< RTI ID} = 0.0 > Then, the filter value (RPM-MOY), that is, the average value of the engine speed (RPM) is obtained, and the difference value between the filtered value (RPM-MOY) and the current engine speed (RPM) is obtained. Obtain the corrected ignition timing (RPM-MOY _i ).

Where RPM-MOY _i is the corrected ignition timing,

RPM-MOY _i-1 is the standard ignition timing,

RPM is the engine speed,

RPM-MOY is the filtering value of engine speed,

K1 is the filtering constant.

In other words, the ignition timing is a reference ignition timing (RPM-MOY _i-1 )-K2 (engine speed (RPM)-filtering value of engine speed (RPM-MOY)). Where K2 is a constant.

As shown in FIG. 2, the reference ignition timing (RPM-MOY _i ) is based on a difference value between the engine speed RPM detected by the engine speed sensor 1 and the filtering value RPM-MOY of the engine speed. By advancing or perceiving _-1 ), the ignition timing can be corrected to correspond to engine rotation. That is, when the engine speed (RPM) detected by the engine speed sensor (1) is higher than the filtering value (RPM-MOY) of the engine speed, the ignition timing is retarded. Advance to respond to engine speed.

However, as described above, if the reference ignition timing calculated by the engine speed and the opening amount of the throttle valve is corrected based on the difference between the filtering value of the engine speed and the current engine speed, the engine shank or surge is reduced. Although the ride quality of the vehicle can be increased, when the vehicle is accelerated, as in the prior art, even though the ignition timing is corrected, there is a drawback in that a ride occurs due to a shock or an accompanying surge. .

Therefore, the present invention is proposed to remove the shank or surge generated in spite of the correction of the ignition timing by the difference between the filtering value of the engine speed and the engine speed. It is an object of the present invention to provide an ignition timing correction control device to increase the ride comfort of a vehicle by recalibrating the ignition timing.

1 is a block diagram showing a general ignition timing control device,

2 is a waveform for showing a state of correcting the ignition timing by the conventional engine speed,

3 is a waveform for showing a state of correcting the ignition timing by the amount of change in the engine speed in the present invention,

4 is a flowchart showing an operating state of the present invention.

Explanation of symbols for the main parts of the drawings

1: engine speed sensor 2: engine electronic controller

3: distributor 4: ignition coil

5: spark plug 6: TPS

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

Figure 1 is a block diagram showing a general ignition timing control device, Figure 3 is a waveform for showing a state of correcting the ignition timing by the amount of change in the engine speed in the present invention, Figure 4 shows the operating state of the present invention It is a flow chart.

The present invention, as shown in 1, the engine speed sensor 1 for detecting the engine speed (RPM), the difference between the filtered engine speed (RPM-MOY) and the current engine speed (RPM) to correct the reference ignition timing _{(RPM-MOY i-1)} by, and then after adjustment the change amount based on the ignition timing in proportion to _{(DRPM) (RPM-MOY i} -1) of the engine speed (RPM) is the corresponding The engine electronic control apparatus 2 which produces | generates an ignition signal, and the distributor 3 which interrupts the ignition current which flows in the ignition coil 4 by receiving the ignition signal supplied from this engine electronic control apparatus 2 are comprised.

Figure 4 is a flow chart showing the operating state of the present invention, detecting the engine speed and the opening amount of the throttle valve, and the reference ignition timing (RPM-MOY _i-1 according to the engine speed and the opening amount of the throttle valve) ), And firstly correcting the reference ignition timing (RPM-MOY _i-1 ) based on the difference between the filtered engine speed (RPM-MOY) and the current engine speed (RPM). Secondly correcting the reference ignition timing RPM-MOY _i-1 based on the variation amount DRPM of the engine speed RPM, and outputting an ignition signal corresponding to the corrected ignition timing RPM-MOY _i . It is showing the steps to be performed.

The operation of the present invention configured as described above will be described with reference to FIG.

The engine electronic control apparatus 2 receiving information about the engine speed RPM and the opening amount (load amount) of the throttle valve sensed by the engine speed sensor 1 and the TPS 6 is based on these. The reference ignition timing (RPM-MOY _i-1 ) is calculated (S42). Then, the filtering value (RPM-MOY), that is, the average value of the engine speed (RPM) is obtained, and the difference value between the filtering value (RPM-MOY) and the current engine speed (RPM) is obtained (S43), and then these are calculated. applied to equation 2 to calculate the reference ignition timing _{(RPM-MOY i-1)} the ignition timing correcting _{(RPM-MOY i-1)} (S44).

Where RPM-MOY _i is the corrected ignition timing,

RPM-MOY _i-1 is the standard ignition timing,

RPM is the engine speed,

RPM-MOY is the filtering value of engine speed,

K1 is the filtering constant.

Subsequently, in order to correct the ignition timing secondly, the variation amount of the engine speed is calculated by Equation 3 (S45).

Where DRPM is the engine speed variation,

RPM _i is the current engine speed,

RPM _i-1 is the engine speed before a certain time.

Then, the ignition timing (RPM-MOY _i ) is obtained by correcting the reference ignition timing (RPM-MOY _i-1 ) by applying the variation amount (DRPM) of the engine speed to Equation 4 (S46).

Where RPM is the engine speed,

RPM-MOY is the filtering value of engine speed,

K3 is a constant,

DRPM is the engine speed variation.

As shown in Fig. 3, the engine speed (refers to the waveform above) and the difference between the engine speed and the filtered value of the engine speed are, of course, as shown in Fig. 3 as shown below. The ignition timing (solid line) is recalibrated according to the variation in the rotation speed, and an ignition signal corresponding thereto is generated and output to the distributor 3 (S47).

Then, the ignition current flowing through the ignition coil 4 is interrupted by driving the distributor 3 receiving the ignition signal output from the engine electronic control apparatus 2 so that the ignition plug 5 is adjusted.

As described above, the present invention is to advance the ignition timing corresponding to the difference value between the engine speed detected by the engine speed sensor, that is, the difference between the filtering value (average value) of the engine speed and the current engine speed. By advancing or retarding the ignition timing of the spark plugs in proportion to the amount of change in the engine speed at the same time as the perception, the ignition timing of the spark plugs can be adjusted to the optimum timing to prevent the engine's shank and surge.

That is, by reducing the shank and surge that may occur in the engine due to inaccurate ignition timing during acceleration, it is possible to double the ride comfort of the vehicle.

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)

An engine speed sensor 1 for detecting an engine speed RPM; The reference ignition timing (RPM-MOY _i-1 ) is corrected based on the difference between the filtered engine speed (RPM-MOY) and the current engine speed (RPM), and then the variation amount (DRPM) of the engine speed (RPM) An engine electronic controller (2) for correcting the reference ignition timing (RPM-MOY _i-1 ) in proportion to the ignition timing and generating an ignition signal corresponding thereto; And a distributor (3) for interrupting a current flowing through the ignition coil (4) by receiving an ignition signal supplied from the engine electronic controller (2).