KR20130008137A - Idle surge vibration controll method and its device of the gasoline engine - Google Patents

Idle surge vibration controll method and its device of the gasoline engine Download PDF

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Publication number
KR20130008137A
KR20130008137A KR1020110068663A KR20110068663A KR20130008137A KR 20130008137 A KR20130008137 A KR 20130008137A KR 1020110068663 A KR1020110068663 A KR 1020110068663A KR 20110068663 A KR20110068663 A KR 20110068663A KR 20130008137 A KR20130008137 A KR 20130008137A
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KR
South Korea
Prior art keywords
engine
vibration
rpm
idle
target value
Prior art date
Application number
KR1020110068663A
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Korean (ko)
Inventor
정인수
진재민
김진훈
배성윤
유재곤
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현대자동차주식회사
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Priority to KR1020110068663A priority Critical patent/KR20130008137A/en
Publication of KR20130008137A publication Critical patent/KR20130008137A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/16—Introducing closed-loop corrections for idling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
    • 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
    • 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
    • F02D2200/101—Engine speed
    • 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
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/702—Road conditions

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: A method and apparatus for controlling idle surge vibration in a gasoline engine are provided to adjust the RPM of an engine by comparing frequencies according to engine RPM to a set target value. CONSTITUTION: A method for controlling idle surge vibration in a gasoline engine comprises following steps. Vibration delivered from a sensor installed in a vehicle is measured. The sensor measures changes in engine idle RPM(S4). The measured changes in the vibration and RPM are compared to a target value to determine whether or not the changes reach the target value(S6). If the changes reach the target value, the engine idle RPM is maintained or down. If the changes do not reach the target value, the engine idle RPM is adjusted again. The temperature of refrigerant is measured during the initial starting. The engine RPM initially set in an ECU map is selected. [Reference numerals] (AA) Engine RPM Up; (BB) Engine RPM Down or holding; (S1) Vehicle engine ON; (S2) Measuring cooling water temperature in starting; (S3) Selecting engine RPM initially set in ECU map; (S4) Measuring vehicle seat vibration and engine RPM change; (S5) Calculating a measurement value; (S6) The measurement value satisfies a desired value?

Description

Idle surge vibration controll method and its device of the gasoline engine

The present invention relates to a method and a device for controlling the idle surge vibration of a gasoline engine, and more particularly, to analyzing the engine idle RPM and vibration frequency at the initial stage of startup by using the engine idle RPM and the acceleration vibration sensor installed in the vehicle. The present invention relates to an idle surge vibration control method of a gasoline engine for controlling idle surge vibration and an apparatus thereof.

The overall control of the vehicle engine is made through an ECU installed in the engine room. The data necessary for engine control is set as a map table in the ECU, and the fuel dispenser, fuel injection amount, ignition timing and air-fuel ratio are controlled by various sensors. The engine RPM is controlled to reach the set target value.

However, the conventional engine idle RPM control method detects the water temperature of the coolant and the engine idle RPM is mapped according to the coolant temperature, so that it takes a certain time to reach the target value. Vibration and surge vibrations are synchronized with the rotational speed.

Vibration generated during engine idle rotation is more severe as the vehicle ages, and this vibration has been an important factor causing discomfort to the vehicle body and the driver.

Therefore, the engine idle RPM is increased as a means for controlling the body vibration, and the increase in the engine RPM increases exhaust gas emissions, which not only adversely affects the environment, but also increases fuel consumption and increases vehicle interior noise. It caused another problem.

In order to improve the above-mentioned conventional problems of the present invention, the engine idle RPM through the vibration transmitted to the vehicle by installing the acceleration vibration sensor on the bottom of the seat of the driver that can feel the vibration generated during engine idling most sensitively It is an object of the present invention to provide a method for controlling idle surge vibration of a gasoline engine to control vehicle quietness and emission reduction at the same time.

In addition, another object of the present invention is to install a CPS sensor for detecting the engine RPM to obtain a signal, and an acceleration vibration sensor for detecting the vibration of the vehicle in the vehicle interior to set the engine rotation speed and the frequency according to the vehicle vibration in the ECU The present invention provides an idle surge vibration control device for a gasoline engine that can adjust engine RPM during idling through comparison and feedback control.

In order to achieve the above object of the present invention, the idle surge vibration control method of the gasoline engine according to the present invention comprises the steps of measuring the vibration transmitted to the room from a sensor installed in the vehicle; Measuring an engine idle RPM variation from a sensor installed in the engine; Determining whether the target value is reached by comparing the measured vibration and engine idle RPM variation with a set target value; After comparing the vibration and engine idle RPM fluctuations, if the target value is satisfied, the engine idle RPM is down or maintained.If the vibration and engine idle RPM fluctuations do not meet the target value, the engine idle RPM reaches the target value through feedback. Repeated adjustments to make; It is made, including.

In addition, the engine idle surge vibration control method includes the steps of measuring the temperature of the cooling water during the initial start in the ON state (ON); Selecting the engine RPM initially set in the engine ECU map; and the indoor vibration measurement of the vehicle is performed by a sensor installed in the driver's seat.

In particular, the engine idle RPM adjustment is performed such that the vibration and engine idle RPM fluctuations reach a target value by controlling fuel injection amount, ignition timing and air-fuel ratio through repeated feedback.

In addition, the idle surge vibration control apparatus of the gasoline engine according to the present invention for achieving the above object is installed on the engine crank position (CPS) sensor for grasping the engine RPM information; An acceleration vibration sensor installed in a vehicle to detect vibration; By comparing the engine speed information input from the crank position (CPS) sensor and the vibration signal input from the acceleration vibration sensor with a target value, controlling to maintain or adjust the engine idle RPM according to whether or not the target value Engine ECU; made.

The idle surge vibration control method and apparatus of the gasoline engine according to the present invention control the engine RPM through the vibration of the vehicle generated in synchronization with the engine speed to minimize the vehicle vibration actually felt by the driver or to maintain a stable vehicle Even if this ages, it is possible to actively control the engine RPM according to the condition of the vehicle to prevent exhaust gas reduction and deterioration of indoor noise.

In particular, the conventional engine RPM adjustment has a problem that it is difficult to actively maintain the quality of the new car due to the change in the surrounding environment, fuel, and aging of the vehicle, but in the present invention based on the vibration of the vehicle interior that the driver actually feels Engine RPM can be adjusted to control the engine speed to reach the target value set in spite of various changes of the vehicle so that the driver's riding comfort can be maintained in the same condition as a new car. Make it possible.

1 is a flowchart illustrating a method for controlling idle vibration of an engine according to a conventional embodiment;
2 is a flowchart illustrating a method for controlling idle vibration of an engine according to an embodiment of the present invention;
3 is a simplified configuration diagram of an idle vibration control device of an engine according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention exemplified below may be modified and implemented in various forms to explain those skilled in the art to more fully implement the present invention.

Incidentally, in describing the embodiments of the present invention, functions and configurations known in the art will not be described in detail, and only limited to the features of the present invention.

First, an idle surge vibration control apparatus of a gasoline engine according to an exemplary embodiment of the present invention will be described with reference to FIG. 2.

The idle vibration control device of the gasoline engine according to the embodiment of the present invention is installed in the engine 10 and the crank position sensor (CPS, 12) for detecting the position of the piston, the driver is installed around the indoor driver's seat 20 of the vehicle Engine ECU that receives signals from the acceleration vibration sensor (Acellerometer, 22), the crank position sensor (CPS, 12) and the acceleration vibration sensor (Acellerometer, 22) to sense the vibration felt by the engine ECU ( And 30).

The crank position sensor (CPS) 12 is for acquiring information on the idle speed of the engine, and the throttle position sensor together with the crank position sensor (CPS, 12) to grasp the idle speed of the engine 10. (TPS) or the like may be additionally installed.

In addition, the acceleration vibration sensor (Acellerometer, 22) is preferably fixed to the bottom of the seat 20 of the driver to feel the vibration of the vehicle body most sensitively in the idle state.

The crank position sensor (CPS) 12 is provided with a magnetic coil inside the cylinder block is installed in the cylinder block detects the position of the piston and converts it into a pulse signal and inputs to the engine ECU 30, the engine ECU 30 is input The engine speed can be adjusted by calculating the engine speed according to the signal and adjusting the fuel minute and ignition timing.

In addition, the accelerometer (Acellerometer) 22 is formed of any one of piezo-electric material (ICP) type, ICP sensor or voltage type sensor, the inertial force of the piezoelectric element or the amplification circuit therein Is provided to provide the signal detected by the sensor to the engine ECU 30 in the frequency domain, and the engine ECU 30 analyzes the converted data as a speed or displacement signal or uses the converted data as it is.

That is, the engine ECU 30, which is an important part of engine control, calculates the engine speed by the signal input from the crank position sensor CPS 12, and compares the calculated data with the mapping data set as the initial target value. And compares the frequency input from the acceleration vibration sensor 22 with a set target value, and controls to keep the engine idle RPM as it is or set below the set target value when it matches the target value after the comparison. .

In addition, if the value measured by comparing the engine idle RPM and vibration frequency does not match the target value, the engine RPM is commanded to control the ignition timing, fuel injection amount, air-fuel ratio, etc. Keep the speed constant.

An idle surge vibration control method of a gasoline engine according to an exemplary embodiment of the present invention will be described with reference to FIG. 3.

First, the cooling water temperature is measured at the initial start-up basically in the on state (S1).

By measuring the coolant temperature and selecting the engine idle RPM initially set in the engine ECU map according to the measured temperature to maintain the idling state (S2).

Normally, at the initial start-up, the cooling water temperature is low, so that the high ECU is set in the engine ECU map, and the engine idle RPM is gradually reduced as the cooling water temperature increases.

Subsequently, the vibration frequency transmitted to the vehicle body according to the children is measured from the acceleration vibration sensor installed in the driver's seat or the vehicle body near the driver's seat, and the engine RPM variation is measured from the CPS sensor installed in the engine cylinder block (S4).

The engine ECU calculates (S5) and analyzes the measured vehicle vibration frequency and engine RPM variation and compares it with the mapped target value (S6). The engine ECU compares the vehicle vibration and engine idle RPM variation as a result of the comparison judgment. If it matches the set value, the engine idle RPM should be lowered or kept as it is.If the vehicle vibration and engine idle RPM fluctuations do not match the set value, feedback is controlled by controlling the fuel injection amount, ignition timing and air-fuel ratio. Adjust the idle RPM to reach the target value.

If the vehicle vibration and engine idle RPM fluctuations match the set value during the above process, the engine idle RPM can be down. This is because the vibration of the vehicle body in the low idle RPM region is reduced and fuel consumption is reduced. When the vehicle vibration meets the target value through the engine idle RPM down, iterative feedback control is performed. You can bring down the engine RPM.

However, the engine idle RPM down is properly adjusted and maintained in the engine ECU through continuous comparison with the vibration frequency value measured by the acceleration vibration sensor, and surge vibration occurs in the body due to the change of engine torque through the engine idle RPM down. In this case, if the vibration frequency value measured by the acceleration vibration sensor is set to the target value and a level difference occurs, the engine idle RPM is increased again. If the value acquired by the acceleration vibration sensor satisfies the target value, Maintain engine idle RPM.

As such, in the present invention, the engine idle RPM is adjusted through an acceleration vibration sensor installed near the driver's seat or the driver's seat that receives the vehicle's vibration most sensitively, and the engine idle of the vehicle depending on the theoretical value or the experimental value. Unlike the conventional method of controlling the vibration of the city to provide a real vehicle haptic vibration control method.

In addition, the conventional manual method of controlling the idle speed of the engine by the value obtained from the various sensors installed in each part of the engine to avoid the change of environment, fuel, engine aging due to the aging of the vehicle Same as change The engine idle RPM is adjusted according to the vibration intensity transmitted to the vehicle body even in the engine condition so that the vehicle quality and ride comfort can be prevented according to aging.

In addition, by simply adjusting the engine idle RPM with only the coolant temperature, the exhaust gas is increased and decreased, and fuel consumption, exhaust gas generation, and noise are controlled by controlling the idle RPM speed according to the engine's internal conditions, rather than reducing fuel consumption and miniaturization. To reduce the

As mentioned above, the present invention has been limited to the preferred embodiments, but the scope of the present invention is not limited to the above-described embodiments, and is provided to those skilled in the art within the scope of the technical idea of the present invention. Various implementations are possible, and it is obvious that such modifications are within the scope of the appended claims.

10: engine 12: crank position sensor (CPS)
20: sheet 22: acceleration vibration sensor
30: engine ECU

Claims (5)

Measuring the vibration transmitted from the sensor installed in the vehicle to the room;
Measuring an engine idle RPM variation from a sensor installed in the engine;
Determining whether the target value is reached by comparing the measured vibration and engine idle RPM variation with a set target value; And
After comparing the vibration and engine idle RPM fluctuations, the engine idle RPM is down or maintained when the target value is satisfied, and the engine idle RPM is repeatedly adjusted through feedback when the vibration and engine idle RPM variable are not satisfied. Idle surge vibration control method of a gasoline engine comprising a. The method according to claim 1,
The engine idle surge vibration control method includes
Measuring the cooling water temperature at the initial startup in the ON state; And
The idle surge vibration control method of the gasoline engine comprising a; selecting the engine RPM initially set in the engine ECU map. The method according to claim 1,
The indoor vibration measurement of the vehicle is an idle surge vibration control method of a gasoline engine, characterized in that made by a sensor installed in the driver's seat. The method according to claim 1,
The engine idle RPM adjustment is performed so that the vibration and engine idle RPM fluctuations reach a target value by controlling the fuel injection amount, the ignition timing and the air-fuel ratio through repeated feedback. A crank position (CPS) sensor installed in the engine to grasp engine RPM information;
An acceleration vibration sensor installed in a vehicle to detect vibration; And
By comparing the engine speed information input from the crank position (CPS) sensor and the vibration signal input from the acceleration vibration sensor with a target value, controlling to maintain or adjust the engine idle RPM according to whether or not the target value Gasoline idle vibration control device including an engine ECU.
KR1020110068663A 2011-07-12 2011-07-12 Idle surge vibration controll method and its device of the gasoline engine KR20130008137A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104421011A (en) * 2013-08-21 2015-03-18 上海日野发动机有限公司 Idling adjusting method and idling adjusting device of engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104421011A (en) * 2013-08-21 2015-03-18 上海日野发动机有限公司 Idling adjusting method and idling adjusting device of engine

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