KR102504226B1 - Method and apparatus for improving ISG vehicle RPM gauge break phenomenon - Google Patents

Abstract

The ISG vehicle RPM gauge disconnection improvement method of the present invention includes receiving IGS information, RPM, and fuel injection amount information from an EMS controller; and controlling an ISG RPM logic based on the IGS information, RPM, and fuel injection amount information.

Description

Method and apparatus for improving ISG vehicle RPM gauge break phenomenon {Method and apparatus for improving ISG vehicle RPM gauge break phenomenon}

The present invention relates to a method and apparatus for improving an ISG vehicle RPM gauge disconnection phenomenon.

In the prior art, when the ISG operates, the engine is turned off in the same way that the ignition is turned off. At this time, in the case of ISG operation, a case in which RPM stops and then drops occurs in a specific engine.

1 is a diagram showing data of cluster jamming occurrence according to the prior art.

Referring to FIG. 1 , the vertical axis of the graph represents engine rotational speed and fuel injection amount. The horizontal axis of the graph represents time.

In the case of ISG off, cluster jamming may occur in the region 10 where the fuel injection amount is 0 and the RPM is not changed. When the feeling of jamming occurs, the RPM is not maintained without fuel injection in the area where the feeling of jamming occurs. However, the EMS may recognize the engine speed as a value different from the actual RPM.

Accordingly, there is a problem in that the tachometer drops, stops in the middle, and falls again.

The present invention proposes a method and apparatus for improving the ISG vehicle RPM gauge disconnection phenomenon.

More specifically, the present technology aims to improve the movement of the tachometer by allowing the tachometer gauge to fall naturally during ISG operation.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above technical problem, the ISG vehicle RPM gauge disconnection improvement method includes receiving IGS information, RPM, and fuel injection amount information from an EMS controller; and controlling an ISG RPM logic based on the IGS information, RPM, and fuel injection amount information.

Depending on the embodiment, the step of controlling the ISG RPM logic based on the IGS information, RPM, and fuel injection amount information may further include determining whether the RPM exceeds a preset RPM.

Depending on the embodiment, when the RPM exceeds a predetermined RPM, determining whether the RPM variation exceeds zero may be further included.

Depending on the embodiment, when the amount of change in the RPM exceeds 0, the step of controlling the RPM to decrease linearly until it becomes 0 may be further included.

Depending on the embodiment, the method may further include determining whether the fuel injection amount exceeds 0 and the RPM change amount is 0 when the RPM does not exceed the preset RPM.

Depending on the embodiment, when the fuel injection amount exceeds 0 and the RPM change amount is 0, the step of recalculating the RPM based on Equation 1 below may be further included.

Depending on the embodiment, when the fuel injection amount exceeds 0 and the RPM change amount is not 0, the fuel injection amount is 0. The step of determining whether the RPM change amount is 0 may be further included.

Depending on the embodiment, the fuel injection amount is 0. When the change in RPM is 0, determining whether the RPM is 0 may be further included.

Depending on the embodiment, when the RPM is not 0, a step of controlling the RPM to converge to 0 within a specific time based on Equation 2 may be further included.

In order to solve the above technical problems, the ISG vehicle RPM gauge disconnection improvement device includes an EMS controller for outputting IGS information, RPM, and fuel injection amount information;

a CLU controller controlling an ISG RPM logic based on the IGS information, RPM, and fuel injection amount information; and

A cluster RPM gauge operating in response to control of the CLU controller may be included.

Depending on the embodiment, the CLU controller may determine whether the RPM exceeds a predetermined RPM.

Depending on the embodiment, the CLU controller may determine whether the RPM variation exceeds zero when the RPM exceeds a preset RPM.

Depending on the embodiment, the CLU controller may control the RPM to decrease linearly until the RPM becomes zero when the amount of change in the RPM exceeds zero.

Depending on the embodiment, the CLU controller may determine whether the fuel injection amount exceeds 0 and the RPM change amount is 0 when the RPM does not exceed a preset RPM.

Depending on the embodiment, the CLU controller may recalculate the RPM based on Equation 1 below when the fuel injection amount exceeds 0 and the RPM change amount is 0.

Depending on the embodiment, the CLU controller determines that the fuel injection amount is 0 when the fuel injection amount exceeds 0 and the RPM change amount is not 0. It can be determined whether the amount of change in RPM is zero.

Depending on the embodiment, the CLU controller sets the fuel injection amount to zero. When the RPM change amount is 0, it may be determined whether the RPM is 0.

Depending on the embodiment, when the RPM is not 0, the CLU controller may control to converge to 0 within a specific time based on Equation 2 below.

Effects of the ISG vehicle RPM gauge disconnection improvement method and apparatus according to the present invention are described as follows.

First, there is an advantage in improving the movement of the tachometer by allowing the tachometer gauge to fall naturally during the ISG operation.

Second, there is an advantage in that the control of the tachometer is smoother and the sense of quality is increased.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

The accompanying drawings are provided to aid understanding of the present invention, and provide embodiments of the present invention together with a detailed description. However, the technical features of the present invention are not limited to specific drawings, and features disclosed in each drawing may be combined with each other to form a new embodiment.
1 is a diagram showing data of cluster jamming occurrence according to the prior art.
2 is a diagram illustrating an apparatus for improving an ISG vehicle RPM gauge disconnection phenomenon according to an embodiment of the present invention.
3 is a diagram showing engine rotation speed and fuel injection amount according to an embodiment of the present invention.
4 is a flow diagram illustrating a method for improving an ISG vehicle RPM gauge disconnection phenomenon according to an embodiment of the present invention.

Hereinafter, an apparatus and various methods to which embodiments of the present invention are applied will be described in more detail with reference to the drawings. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In the description of the embodiment, in the case of being described as being formed in "upper (above) or lower (below)", "before (front) or after (rear)" of each component, "upper (above) or lower (below)" (below)" and "before (front) or after (rear)" include both formed by direct contact between two components or by placing one or more other components between the two components.

Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element is or may be directly connected to the other element, but there is another element between the elements. It will be understood that elements may be “connected”, “coupled” or “connected”.

In addition, terms such as "include", "comprise" or "have" described above mean that the corresponding component may be inherent unless otherwise stated, excluding other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the meaning in the context of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

2 is a diagram illustrating an apparatus for improving an ISG vehicle RPM gauge disconnection phenomenon according to an embodiment of the present invention.

Referring to FIG. 2 , it may include an EMS controller 110 , a CLU controller 120 and a cluster RPM gauge 130 .

The EMS controller 110 may transmit ISG (Idle Stop & Go) information, RPM, and fuel injection amount from the engine. At this time, the transmission signal may be a CAN signal.

The CLU controller 120 may receive ISG information, RPM, and fuel injection amount from the EMS controller 110 .

The CLU controller 120 may perform ISG RPM logic based on ISG entry, RPM, and fuel injection amount. For example, the CLU controller 120 may perform ISG RPM logic when the ISG operates. At this time, the CLU controller 120 continuously checks the RPM when the ISG RPM logic operates. The CLU controller 120 may perform ISG RPM logic in response to RPM.

The CLU controller 120 may determine whether the RPM exceeds a preset value from the EMS.

When the RPM exceeds a predetermined value, the CLU controller 120 may determine whether the amount of change in RPM exceeds zero.

The CLU controller 120 may control the RPM to linearly decrease to 0 RPM when the RPM is equal to or greater than a preset value and the RPM change amount exceeds 0.

For example, the CLU controller 120 may determine whether the RPM exceeds 500 RPM. Thereafter, the CLU controller 120 may determine that the RPM variation exceeds zero when the RPM is 500 RPM or less. When the RPM change exceeds zero. The CLU controller 120 may linearly decrease the current RPM value to 0 RPM.

In this case, 500 RPM may be a preset optimization value. In general, since it maintains more than 700 RPM in IDLE and driving conditions, there is no chance that the RPM drops below 500. Accordingly, the CLU controller 120 may ignore the jamming and control the RPM to drop linearly when jamming occurs at 500 RPM or less.

The CLU controller 120 may determine whether the RPM received from the EMS is equal to or less than a preset value.

The CLU controller 120 may determine whether the amount of change in the fuel injection amount exceeds 0 and the amount of change in RPM is 0 when the RPM is equal to or less than a preset value. That is, the CLU controller 120 may determine the RPM change amount by comparing the fuel injection amount change amount.

The CLU controller 120 may recalculate the RPM based on the fuel injection amount change amount when the change amount of the fuel injection amount exceeds 0 and the RPM change amount is 0.

The CLU controller 120 may calculate based on Equation 1 below to recalculate the RPM.

[Equation 1]

At this time, the RPM (current) is the RPM received from the EMS, and the fuel injection amount may be constant.

The CLU controller 120 may determine that the RPM is applied when the RPM value does not change but the fuel injection amount decreases. When the fuel injection amount decreases and the RPM does not decrease, the CLU controller 120 may determine that the CAN value has been mistransmitted or that the EMS has failed to respond to the instantaneous change.

The CLU controller 120 may determine whether the fuel injection amount change rate is 0 and the RPM change rate is 0.

That is, since there is no force applied to power when fuel injection is not performed, RPM should be equally reduced. Therefore, the CLU controller 120 may check the case where the RPM variation does not decrease in a situation where fuel injection is not performed.

The CLU controller 120 may determine whether the RPM is 0 when the change rate of the fuel injection amount is 0 and the RPM change rate is 0.

The CLU controller 120 may control the RPM to converge to a value of 0 within a predetermined time when the rate of change of the fuel injection amount is 0 and the rate of change of RPM is 0, and when the RPM is not 0. That is, the CLU controller 120 may control the RPM value to linearly decrease according to the fuel injection amount variation.

For example, the CLU controller 120 may be controlled according to a 10 ms rpm rate of change. At this time, the CLU controller 120 may control the RPM according to Equation 2 below.

[Equation 2]

At this time, RPM (current) is the RPM value received from the EMS.

Accordingly, the CLU controller 120 may control the RPM to linearly reach 0RPM based on 1s when the fuel injection amount is 0.

The CLU controller 120 may restart the IGS RPM logic when the fuel injection amount change rate is 0, the RPM change rate is 0, and the RPM is 0.

The cluster RPM gauge 130 may operate based on the control of the CLU controller 120 .

3 is a diagram showing engine rotation speed and fuel injection amount according to an embodiment of the present invention.

Referring to FIG. 3 , in a region where the engine speed maintains the preset value, the fuel injection amount maintains the preset value.

Thereafter, when the fuel injection amount decreases, the engine speed also decreases. That is, when fuel injection is not performed in the region 310 in which the fuel injection amount decreases, the engine rotation speed may also decrease because there is no force applied to power. Through this, it can be determined that the engine rotation speed and the fuel injection amount are in a proportional relationship.

In addition, the CLU controller 120 may control the RPM to smoothly decrease by comparing the fuel injection amount for the part where the engine speed decreases but the RPM does not.

4 is a flow diagram illustrating a method for improving an ISG vehicle RPM gauge disconnection phenomenon according to an embodiment of the present invention.

Referring to FIG. 4 , the CLU controller 120 may determine whether the RPM is 500 or less (S110).

When the step S110 is satisfied, the CLU controller 120 may determine whether the RPM change amount exceeds 0 (S120).

If the above step S120 is satisfied, the CLU controller 120 may control to linearly decrease to 0 rpm (S130).

If the step S120 is not satisfied, the CLU controller 120 may determine whether the fuel injection quantity change exceeds 0 and the RPM change amount is 0 (S140).

If the step S140 is satisfied, the CLU controller 120 may recalculate the RPM (S150).

When the step S140 is satisfied, the CLU controller 120 may determine whether the fuel injection amount change amount is 0 and the RPM change amount is 0 (S160).

When the step S160 is satisfied, the CLU controller 120 may determine whether the RPM is 0 (S170).

If the step S170 is not satisfied, the CLU controller 120 may control the RPM to converge to 0 within a preset time.

The method according to the above-described embodiment may be produced as a program to be executed on a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, and magnetic memory. There are tapes, floppy disks, and optical data storage systems. The computer-readable recording medium is distributed to computer systems connected through a network, so that computer-readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the above-described method can be easily inferred by programmers in the technical field to which the embodiment belongs.

110: EMS controller
120: CLU controller
130: cluster RPM gauge

Claims (19)

receiving at least one of ISG, RPM, and fuel injection amount from an EMS controller; and
When the ISG operates, determining whether the RPM exceeds a predetermined RPM, and controlling the ISG RPM logic by comparing and analyzing the amount of RPM change versus the fuel injection amount according to the determination result,
The step of controlling the ISG RPM logic,
If the RPM does not exceed the preset RPM,
An ISG vehicle RPM gauge disconnection improvement method for determining whether the fuel injection amount exceeds 0 and the RPM change amount is 0. delete According to claim 1,
When the RPM exceeds the preset RPM, determining whether the RPM variation exceeds 0. According to claim 3
The method of improving the ISG vehicle RPM gauge disconnection further comprising the step of controlling the RPM to decrease linearly until the RPM becomes 0 when the amount of change in the RPM exceeds 0. delete According to claim 1,
When the fuel injection amount exceeds 0 and the RPM change amount is 0, recalculating the RPM based on Equation 1 below.
[Equation 1]

(RPM (current): RPM received from EMS, fuel injection amount: constant) According to claim 1,
When the fuel injection amount exceeds 0 and the RPM change amount is not 0, the fuel injection amount is 0. The ISG vehicle RPM gauge disconnection improvement method further comprising determining whether the RPM change amount is 0. According to claim 7,
The fuel injection amount is 0. The ISG vehicle RPM gauge disconnection improvement method further comprising determining whether the RPM is 0 when the RPM change amount is 0. According to claim 8,
If the RPM is not 0, the ISG vehicle RPM gauge disconnection improvement method further comprising the step of controlling to converge to 0 within a specific time based on Equation 2 below.
[Equation 2]

(RPM (Current): RPM received from EMS) A computer-readable recording medium having a program recorded thereon for realizing the method for improving the ISG vehicle RPM gauge disconnection according to any one of claims 1, 3, 4, and 6 to 9. an EMS controller outputting at least one of ISG, RPM, and fuel injection amount;
When the ISG operates, a CLU controller determining whether the RPM exceeds a predetermined RPM, comparing and analyzing a change in RPM with respect to the fuel injection amount according to the determination result, and controlling the ISG RPM logic; and
Includes a cluster RPM gauge operating in response to the control of the CLU controller;
The CLU controller,
When the RPM does not exceed the predetermined RPM, the ISG vehicle RPM gauge disconnection improvement device for determining whether the fuel injection amount exceeds 0 and the RPM change amount is 0. delete According to claim 11,
The CLU controller
When the RPM exceeds the predetermined RPM, the ISG vehicle RPM gauge disconnection improvement device for determining whether the RPM change amount exceeds 0. According to claim 13,
The CLU controller
When the amount of change in the RPM exceeds 0, the ISG vehicle RPM gauge disconnection improvement device for controlling to decrease linearly until the RPM becomes 0. delete According to claim 11,
The CLU controller
When the fuel injection amount exceeds 0 and the RPM change amount is 0,
ISG vehicle RPM gauge disconnection improvement device for recalculating the RPM based on Equation 1 below.
[Equation 1]

(RPM (current): RPM received from EMS, fuel injection amount: constant) According to claim 11,
The CLU controller
When the fuel injection amount exceeds 0 and the RPM change amount is not 0,
The fuel injection amount is 0. ISG vehicle RPM gauge disconnection improvement device for determining whether the RPM change amount is 0. According to claim 17,
The CLU controller
The fuel injection amount is 0. When the RPM change amount is 0, the ISG vehicle RPM gauge disconnection improvement device for determining whether the RPM is 0. According to claim 18,
The CLU controller
If the RPM is not 0, the ISG vehicle RPM gauge disconnection improvement device for controlling to converge to 0 within a specific time based on Equation 2 below.
[Equation 2]

(RPM (Current): RPM received from EMS)

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