KR101316399B1 - Avoiding method for sensing error of engine misfiring - Google Patents
Avoiding method for sensing error of engine misfiring Download PDFInfo
- Publication number
- KR101316399B1 KR101316399B1 KR1020070129028A KR20070129028A KR101316399B1 KR 101316399 B1 KR101316399 B1 KR 101316399B1 KR 1020070129028 A KR1020070129028 A KR 1020070129028A KR 20070129028 A KR20070129028 A KR 20070129028A KR 101316399 B1 KR101316399 B1 KR 101316399B1
- Authority
- KR
- South Korea
- Prior art keywords
- engine
- vibration
- cylinder
- knocking
- misfire
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
본 발명은 노킹 제어 로직이 실시된 후에 엔진의 진동 변화를 이용하여 발생한 엔진의 진동이 엔진의 실화에 의한 진동인지, 엔진의 노킹에 의한 진동인지를 구분함으로써 엔진의 실화 오감지의 발생을 회피할 수 있는 엔진의 실화 오감지 회피 방법에 관한 것이다.The present invention can avoid occurrence of misfire detection of the engine by distinguishing whether the vibration of the engine generated using the vibration change of the engine after the knocking control logic is implemented by the misfire of the engine or the vibration of the knocking of the engine. The present invention relates to a method for avoiding misfire detection of misfired engines.
실화, 노킹, 진동, 오감지, 점화시기, 지각 True story, knocking, vibration, five senses, ignition timing, perception
Description
본 발명은 엔진의 실화 오감지 회피 방법에 관한 것으로, 특히 노킹 제어 로직이 실시된 후에 엔진의 진동 변화를 이용하여 발생한 엔진의 진동이 엔진의 실화에 의한 진동인지, 엔진의 노킹에 의한 진동인지를 구분함으로써 엔진의 실화 오감지의 발생을 회피할 수 있는 엔진의 실화 오감지 회피 방법에 관한 것이다.The present invention relates to a method for avoiding misfire detection of an engine, and in particular, to determine whether the engine vibration generated by using the vibration change of the engine after the knocking control logic is implemented is caused by misfire of the engine or vibration by knocking of the engine. The present invention relates to a method of avoiding misfire detection of an engine that can avoid occurrence of misfire detection of an engine by dividing.
엔진에 실화가 발생하면, 엔진 rpm이 급격하게 변화함으로써 엔진에는 이상 진동이 발생한다. 실화 감지 로직은 엔진 rpm이 급격하게 변동될 때, 이를 감지하여 엔진의 실화를 판정한다.When misfire occurs in the engine, abnormal vibration occurs in the engine due to the rapid change in the engine rpm. The misfire detection logic detects when the engine rpm changes abruptly and determines misfire of the engine.
그리고, 엔진의 연소 과정 중 노킹(Knocking)이 발생하면, 엔진 내의 입력파에 의해 엔진에는 진동이 발생한다. 차량은 노킹에 의한 엔진 진동의 특정 주파수를 감지하여 엔진의 노킹을 판정한다.When knocking occurs during the combustion process of the engine, vibration occurs in the engine by input waves in the engine. The vehicle senses a specific frequency of engine vibration due to knocking to determine knocking of the engine.
그런데, 현재까지 엔진에 발생한 실화의 의한 엔진의 이상 진동과 엔진의 노 킹에 의한 엔진의 진동이 정형화되어 있지 않기 때문에, 차량은 엔진에 발생한 실화에 의한 이상 진동을 엔진의 노킹에 의한 진동이라고 판정하여 노킹 제어 로직을 실시할 수 있다.However, since the abnormal vibration of the engine due to misfire occurring in the engine and the vibration of the engine due to engine knocking have not been formulated, the vehicle determines that the abnormal vibration caused by the misfire occurring in the engine is the vibration by knocking of the engine. Knocking control logic can be implemented.
차량이 엔진의 실화에 의한 이상 진동을 엔진의 노킹에 의한 진동이라고 판정하여 노킹 제어 로직을 실시하면, 엔진의 노킹이 발생한 것이 아님에도 불구하고 점화시기를 지각시키는 노킹 제어가 이상 진동이 감지된 실린더에 실시된다. 실화 감지 로직은 엔진 rpm의 변동량으로 실화를 감지한다. 따라서, 이상 진동을 노킹에 의한 진동이라고 판정하여 어느 하나의 실린더에 노킹 제어가 실시되면 다른 실린더와 비교하여 노킹 제어가 실시된 어느 하나의 실린더의 점화시기가 지각되어 그 실린더의 엔진 rpm이 변화됨으로써 실화 감지 로직이 어느 하나의 실린더에 실화가 발생하였다라고 오감지할 수 있는 문제점이 있다.When the vehicle determines that abnormal vibration caused by misfire of the engine is vibration caused by knocking of the engine and performs knocking control logic, the knocking control for perceiving the ignition timing is detected when abnormal vibration is detected even though the engine is not knocked. Is carried out. The misfire detection logic detects misfire by varying the engine rpm. Therefore, when the abnormal vibration is determined to be vibration caused by knocking and knocking control is performed on one cylinder, the ignition timing of any one of the cylinders subjected to knocking control is perceived compared to the other cylinders, and the engine rpm of the cylinder is changed. There is a problem that misfire detection logic may incorrectly detect that misfire has occurred in any one cylinder.
따라서, 본 발명의 목적은 노킹 제어 로직이 실시된 후에 엔진의 진동 변화를 이용하여 발생한 엔진의 진동이 엔진의 실화에 의한 진동인지, 엔진의 노킹에 의한 진동인지를 구분함으로써 엔진의 실화 오감지의 발생을 회피할 수 있는 엔진의 실화 오감지 회피 방법을 제공하는 것이다.Accordingly, an object of the present invention is to distinguish misfire detection of an engine by distinguishing whether the vibration of the engine generated using the vibration change of the engine after the knocking control logic is implemented is caused by the misfire of the engine or by the knocking of the engine. It is to provide a method for avoiding misfire detection of an engine that can avoid occurrence.
상기의 목적을 달성하기 위하여, 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법은 엔진의 실린더에 발생하는 진동을 감지하는 제1 단계와; 상기 엔진의 실린더의 진동을 저장하는 제2 단계와; 상기 엔진의 실린더의 점화시기를 지각시키는 제3 단계와; 상기 제2 단계에서 저장한 상기 엔진의 실린더의 진동과, 상기 제3 단계 후의 상기 엔진의 실린더의 진동의 차를 계산하는 제4 단계와; 상기 차가 일정 값을 초과하는가를 판단하는 제5 단계와; 상기 차가 일정 값을 초과하지 않으면, 상기 제1 단계에서 감지한 상기 엔진의 실린더의 진동을 엔진의 이상 진동이라고 판단하는 제6 단계와; 엔진의 실린더의 진동이 엔진의 이상 진동이면, 점화시기를 지각시키는 노킹 제어를 중지하고, 노킹 점화시기 학습을 중지하며, 실화 감지 기능을 중지하는 제7 단계를 포함한다.In order to achieve the above object, a misfire detection method of the engine according to an embodiment of the present invention includes a first step of detecting a vibration occurring in the cylinder of the engine; Storing a vibration of a cylinder of the engine; A third step of retarding the ignition timing of the cylinder of the engine; A fourth step of calculating a difference between vibration of the cylinder of the engine stored in the second step and vibration of the cylinder of the engine after the third step; A fifth step of determining whether the difference exceeds a predetermined value; A sixth step of determining that the vibration of the cylinder of the engine detected in the first step is an abnormal vibration of the engine if the difference does not exceed a predetermined value; And if the vibration of the cylinder of the engine is abnormal vibration of the engine, stopping the knocking control for retarding the ignition timing, stopping the knocking ignition timing learning, and stopping the misfire detection function.
상기 엔진의 실화 오감지 회피 방법은 상기 제5 단계의 판단 결과, 상기 차가 일정 값을 초과하면, 상기 제1 단계에서 감지한 상기 엔진의 실린더의 진동을 엔진의 노킹에 의한 진동이라고 판단하는 단계와; 상기 제1 단계에서 감지한 상기 엔진의 실린더의 진동이 엔진의 노킹에 의한 진동이면 엑셀 페달 개도율 등에 따라 엔진을 제어하는 일반 제어 로직으로 엔진을 제어하는 단계를 더 포함한다.The misfire detection method of the engine may include determining that the vibration of the cylinder of the engine detected in the first step is vibration caused by knocking of the engine when the difference exceeds a predetermined value as a result of the determination in the fifth step. ; If the vibration of the cylinder of the engine detected in the first step is vibration caused by the knocking of the engine further comprises the step of controlling the engine by the general control logic for controlling the engine in accordance with the accelerator pedal opening rate.
삭제delete
상기 제5 단계의 상기 일정 값은 상기 제3 단계 후의 상기 엔진의 실린더의 진동의 1.5배이다.The constant value of the fifth stage is 1.5 times the vibration of the cylinder of the engine after the third stage.
이와 같이, 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법은 노킹 제어 로직이 실시된 후에 엔진의 진동 변화를 이용하여 발생한 엔진의 진동이 엔진의 실화에 의한 진동인지, 엔진의 노킹에 의한 진동인지를 구분한다. 그리고, 이상 진동이라고 판정되는 경우가 미리 설정된 횟수(예를 들면, 10회를 들 수 있음) 이상 반복되면 노킹 제어를 중지하고, 노킹 점화시기 학습을 중지하며, 실화 감지 기능을 중지한다. 따라서, 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법은 이상 진동이 발생한 엔진의 실린더의 점화시기를 지각하지 않을 수 있다. 또한, 노킹 제어가 실시된 어느 하나의 실린더의 점화시기가 지각되어 엔진 rpm이 변화됨으로써 실화 감지 로직이 노킹 제어가 실시된 어느 하나의 실린더에 실화가 발생하였다라고 오감지하는 문제를 제거할 수 있다.As described above, the method for avoiding misfire detection of an engine according to an exemplary embodiment of the present invention may be based on whether knocking of the engine is caused by misfire of the engine or vibration of the engine generated using the change of vibration of the engine after the knocking control logic is executed. Identify whether it is vibration. Then, when it is determined that the abnormal vibration is repeated more than a preset number of times (for example, 10 times), knocking control is stopped, knocking ignition timing learning is stopped, and the misfire detection function is stopped. Therefore, the misfire detection method of the engine according to an embodiment of the present invention may not perceive the ignition timing of the cylinder of the engine in which the abnormal vibration has occurred. In addition, the ignition timing of any one of cylinders subjected to knocking control is changed and the engine rpm is changed, so that the misfire detection logic can eliminate a problem in which misfire has occurred in any one of cylinders subjected to knocking control. .
이하, 도 1 내지 도 3을 참조하여 본 발명의 바람직한 실시 예에 대하여 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 1 to 3.
도 1은 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법을 나타내는 순서도이다.1 is a flowchart illustrating a misfire detection method of an engine according to an exemplary embodiment of the present invention.
도 1을 참조하면, 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법은 엔진의 임의의 실린더에 발생한 진동을 감지하면(S10), 진동이 발생한 실린더의 진동을 가속도 센서로부터 읽어드려 저장하고(S12), 진동이 발생한 실린더의 점화시기를 지각시켜 노킹 제어를 실시한다(S14). 그런 다음, 상기 S12 단계에서 저장한 실린더의 진동과, 상기 S14 단계에서 노킹 제어가 실시된 후의 실린더 진동의 차를 계산하고(S16), 상기 S16 단계에서 계산한 상기 S12 단계에서 저장한 실린더의 진동과, 상기 S14 단계에서 노킹 제어가 실시된 후의 실린더의 진동의 차가 일정 값을 초과하는가를 판단한다(S18).Referring to FIG. 1, when a misfire detection method of an engine according to an exemplary embodiment of the present invention detects vibration generated in an arbitrary cylinder of an engine (S10), the vibration of a cylinder in which vibration is generated is read and stored from an acceleration sensor. (S12), the ignition timing of the cylinder in which the vibration has occurred is delayed and knocking control is performed (S14). Next, the difference between the vibration of the cylinder stored in the step S12 and the cylinder vibration after the knocking control is performed in the step S14 is calculated (S16), and the vibration of the cylinder stored in the step S12 calculated in the step S16. Then, it is determined whether the difference in vibration of the cylinder after the knocking control is performed in step S14 exceeds a predetermined value (S18).
엔진의 노킹이 발생하여 노킹 제어가 실시되면, 엔진의 진동은 도 2와 같이, 급격히 작아진다. 하지만, 엔진의 실화가 발생하여 노킹 제어가 실시되면, 엔진의 진동은 도 3과 같이 크게 변화가 없다.When knocking of the engine occurs and knocking control is performed, the vibration of the engine is rapidly reduced as shown in FIG. 2. However, when misfire of the engine occurs and knocking control is performed, the vibration of the engine does not change significantly as shown in FIG. 3.
따라서, 상기 S18 단계의 판단 결과, 상기 S12 단계에서 저장한 실린더의 진동과, 상기 S14 단계에서 노킹 제어가 실시된 후의 실린더의 진동의 차가 일정 값을 초과하면(S18), 본 발명의 엔진의 실화 오감지 회피 방법은 상기 S10 단계에서 발생한 실린더의 진동을 엔진의 노킹에 의한 진동이라고 판단하고, 엑셀 페달 개도율 등에 따라 엔진을 제어하는 일반 제어 로직으로 엔진을 제어한다(S20). 여기서, 엔진의 노킹에 의한 진동이면 상기 S12 단계에서 저장한 엔진의 진동은 상기 S14 단계에서 노킹 제어가 실시된 엔진 진동보다 1.5배 크다. 그러므로, 상기 일정 값은 상기 S14 단계에서 노킹 제어가 실시된 실린더의 진동의 1.5배 이상의 진동 값이다. 한편, 상기 S18 단계의 판단 결과, 상기 S12 단계에서 저장한 실린더의 진동과, 상기 S14 단계에서 노킹 제어가 실시된 실린더의 진동의 차가 일정 값을 초과하지 않으면(S18), 본 발명의 엔진의 실화 오감지 회피 방법은 상기 S10 단계에서 발생한 실린더의 진동을 엔진의 이상 진동이라고 판단한다(S22).Therefore, as a result of the determination in step S18, when the difference between the vibration of the cylinder stored in the step S12 and the vibration of the cylinder after the knocking control is performed in the step S14 exceeds a predetermined value (S18), misfires of the engine of the present invention In the method for avoiding misdetection, the vibration of the cylinder generated in the step S10 is determined to be vibration by knocking of the engine, and the engine is controlled by general control logic for controlling the engine according to the accelerator pedal opening rate or the like (S20). Here, if the vibration by the knocking of the engine, the vibration of the engine stored in the step S12 is 1.5 times greater than the engine vibration subjected to the knocking control in the step S14. Therefore, the constant value is a vibration value of 1.5 times or more of the vibration of the cylinder subjected to the knocking control in the step S14. On the other hand, as a result of the determination in step S18, if the difference between the vibration of the cylinder stored in the step S12 and the vibration of the cylinder subjected to the knocking control in the step S14 does not exceed a predetermined value (S18), misfires of the engine of the present invention The misdetection avoiding method determines that the vibration of the cylinder generated in the step S10 is abnormal vibration of the engine (S22).
본 발명의 엔진의 실화 오감지 회피 방법은 엔진을 제어하는 동안 상기 S22 단계 즉, 상기 S10 단계에서 발생한 실린더의 진동을 엔진의 이상 진동이라고 판정하는 횟수를 카운터하고(S24), 상기 S24 단계의 카운터가 미리 설정된 횟수(예를 들면, 10회를 들 수 있음)를 초과하면(S26), 점화시기를 지각시키는 노킹 제어를 중지하고, 노킹 점화시기 학습을 중지하며, 실화 감지 기능을 중지한다(S28).The misfire misdetection detection method of the engine of the present invention counts the number of times that the vibration of the cylinder generated in the step S22, that is, the step S10 is determined to be abnormal vibration of the engine while controlling the engine (S24), and the counter of the step S24 Exceeds the preset number of times (for example, 10 times) (S26), stops the knocking control for perceiving the ignition timing, stops the knocking ignition timing learning, and stops the misfire detection function (S28). ).
도 1은 본 발명의 실시 예에 따른 엔진의 실화 오감지 회피 방법을 나타내는 순서도,1 is a flowchart illustrating a misfire detection method of an engine according to an embodiment of the present invention;
도 2는 엔진의 노킹이 발생하였을 때, 노킹 제어 로직이 실시된 후에 엔진 rpm의 변화를 나타내는 그래프,2 is a graph showing a change in engine rpm after knocking control logic is executed when knocking of the engine occurs;
도 3은 엔진의 실화가 발생하였을 때, 노킹 제어 로직이 실시된 후에 엔진 rpm의 변화를 나타내는 그래프이다.3 is a graph showing changes in engine rpm after knocking control logic is executed when engine misfire occurs.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070129028A KR101316399B1 (en) | 2007-12-12 | 2007-12-12 | Avoiding method for sensing error of engine misfiring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070129028A KR101316399B1 (en) | 2007-12-12 | 2007-12-12 | Avoiding method for sensing error of engine misfiring |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090061981A KR20090061981A (en) | 2009-06-17 |
KR101316399B1 true KR101316399B1 (en) | 2013-10-08 |
Family
ID=40991291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070129028A KR101316399B1 (en) | 2007-12-12 | 2007-12-12 | Avoiding method for sensing error of engine misfiring |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101316399B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110529278B (en) * | 2018-05-25 | 2022-08-16 | 日立汽车系统(中国)有限公司 | Engine misfire detection method, device and system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07247947A (en) * | 1994-03-07 | 1995-09-26 | Toyota Motor Corp | Device for controlling ignition timing of internal combustion engine |
JPH08128354A (en) * | 1994-11-01 | 1996-05-21 | Tokyo Gas Co Ltd | Knocking judging method and device of engine |
JPH11247750A (en) * | 1998-02-27 | 1999-09-14 | Nippon Soken Inc | Abnormal combustion detecting device for internal combustion engine |
JP2004340077A (en) | 2003-05-16 | 2004-12-02 | Honda Motor Co Ltd | Knocking control device of variable cylinder type internal combustion engine |
-
2007
- 2007-12-12 KR KR1020070129028A patent/KR101316399B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07247947A (en) * | 1994-03-07 | 1995-09-26 | Toyota Motor Corp | Device for controlling ignition timing of internal combustion engine |
JPH08128354A (en) * | 1994-11-01 | 1996-05-21 | Tokyo Gas Co Ltd | Knocking judging method and device of engine |
JPH11247750A (en) * | 1998-02-27 | 1999-09-14 | Nippon Soken Inc | Abnormal combustion detecting device for internal combustion engine |
JP2004340077A (en) | 2003-05-16 | 2004-12-02 | Honda Motor Co Ltd | Knocking control device of variable cylinder type internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
KR20090061981A (en) | 2009-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7424820B2 (en) | Knocking state determination device | |
US20090049895A1 (en) | Method and engine control unit to detect combustion misses in part-engine operation | |
KR940000346B1 (en) | Knock control device for internal combustion engine | |
JPH07180600A (en) | Misfire discrimination system of internal combustion engine | |
KR101566733B1 (en) | Method and apparatus for misfire detection by rev count of vehicle engine | |
JP2013122192A5 (en) | ||
CN112127998B (en) | Engine knock identification method, system and equipment | |
US7591172B2 (en) | Method and system for misfire detection | |
JP2009275663A (en) | Combustion state detecting device of internal combustion engine | |
JP2017155605A (en) | Misfire detection device for multi-cylinder internal combustion engine | |
KR101316399B1 (en) | Avoiding method for sensing error of engine misfiring | |
JP5278053B2 (en) | Engine control device | |
KR102406503B1 (en) | Method of misfire detection for catalyst damage | |
JP2020133527A (en) | Accidental fire detection device and accidental fire detection method for internal combustion engine | |
KR101072184B1 (en) | A method for controlling knocking window of vehicle's engine | |
JP4803835B2 (en) | Knock sensor failure detection method | |
JP2011174409A (en) | Apparatus for detecting knocking of internal combustion engine | |
US5806489A (en) | Method for returning to nominal advance when no pinging is detected | |
KR100471903B1 (en) | Knocking determination method | |
JP2540915B2 (en) | Engine abnormal noise detection method | |
US10450971B2 (en) | Method and device for controlling a combustion of an internal combustion engine | |
KR100249902B1 (en) | Detecting signal processing system for knocking control of an engine and method thereof | |
KR100471200B1 (en) | Engine control method to prevent knocking | |
JPH03249359A (en) | Misfire judger for internal combustion engine | |
KR100357580B1 (en) | Method for sensing engine misfire of automatic transmission |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |