KR0185340B1 - Method for preventing the reduction of rpm by full turn of power steering - Google Patents
Method for preventing the reduction of rpm by full turn of power steering Download PDFInfo
- Publication number
- KR0185340B1 KR0185340B1 KR1019960022637A KR19960022637A KR0185340B1 KR 0185340 B1 KR0185340 B1 KR 0185340B1 KR 1019960022637 A KR1019960022637 A KR 1019960022637A KR 19960022637 A KR19960022637 A KR 19960022637A KR 0185340 B1 KR0185340 B1 KR 0185340B1
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- engine
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- fuel injection
- engine speed
- rpm
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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
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
-
- 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
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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)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
본 발명은 파워 스티어링의 풀 턴에 따라 걸리는 부하에 의해 시동이 꺼지는 것을 방지하기 위해 파워 스티어링의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법에 관한 것으로, 파워 스티어링의 풀 턴에 따라 가속페달을 밟는 단계(11,12); 상기 가속페달의 답력시 엔진회전수가 급감소하는가를 판단하여 급감하지 않으면 동기화시간동안 연료분사를 수행하는 단계(13,14); 상기 엔진회전수가 급감하면 엔진의 아이들링 상태를 판단하는 단계(15); 상기 아이들링 상태이면 엔진 회전수를 설정회전수와의 대소관계를 판단하여 이하이면, 응답시간이 빠른 비동기 연료분사를 수행하고, 그렇지 않으면 종료하는 단계(16,17); 및 상기 비동기 연료분사시에 순간적인 연료를 공급하여 엔진회전수를 보상하는 단계(18)를 포함하는 것을 특징으로 한다.The present invention relates to a method for preventing a decrease in the number of revolutions (rpm) due to a full turn of a power steering to prevent starting from being turned off due to a load applied in response to a full turn of the power steering, Step (11,12) of depressing the accelerator pedal according to the turn; (13,14) when the acceleration pedal is depressed and the fuel injection is performed during the synchronization time if it is determined that the engine rotation speed is rapidly decreased. A step (15) of judging an idling state of the engine when the engine speed suddenly decreases; Determining whether the engine speed is in the idling state with respect to the set rotation speed, performing the asynchronous fuel injection with a quick response time if the engine speed is equal to or less than the set rotation speed, And a step (18) of compensating an engine speed by supplying an instant fuel at the time of the asynchronous fuel injection.
Description
제1도는 본 발명에 의한 파워핸들의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법을 구현하기 위한 처리흐름도.FIG. 1 is a processing flowchart for implementing a method for preventing a reduction in the number of revolutions (rpm) according to a full turn of a power handle according to the present invention.
제2도는 제1도의 타이밍도이다.FIG. 2 is a timing diagram of FIG.
본 발명은 파워 스티어링의 풀 턴에 따라 걸리는 부하에 의해 시동이 꺼지는 것을 방지하기 위한 파워 스티어링의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법에 관한 것이다.The present invention relates to a method for preventing rpm lowering due to a full turn of power steering to prevent starting from being turned off due to a load applied by a full turn of the power steering.
일반적으로, 엔진에 의해 구동되는 오일펌프의 유압으로 핸들의 조작력을 가볍게 하는 파워 스티어링(power steering)에서는 파워실린더에 들어가는 오일의 양을 제어밸브에 의해 조정하되, 핸들을 신속히 움직일 경우에는 오일양이 많아지고, 핸들조작을 멈추게 되면 오일의 유입도 멈추도록 되어 있으며, 또한 파워 스티어링 압력스위치에 의해 조향핸들을 회전시키되, 유압이 상승되는 순간을 전압으로 변환하여 공전속도 제어 서보를 작동시키므로서 엔진의 회전속도를 상승시키고 있다.Generally, in the case of power steering in which the operating force of the steering wheel is reduced by the oil pressure of the oil pump driven by the engine, the amount of oil entering the power cylinder is adjusted by the control valve. However, The steering wheel is rotated by the power steering pressure switch, and the instant when the oil pressure rises is converted into a voltage to operate the idling speed control servo, so that the rotation of the engine Speed.
이와 같은 파워 스티어링 조작차량에서 도로의 U턴(U-turn)이나 코너링(cornering)과 같이 차량의 진행방향을 바꾸기 위해 핸들을 최대한 회전시킨 상태에서는 스티어링 기어박스에서 휠의 회전운동을 좌우 조향운동을 변환하여 앞바퀴에 전달할 때, 기어박스에 많은 부하가 걸리게 마련이며, 상기 핸들의 조향특성에 따라 일정한 조향각으로 선회하면서 속도를 높인다 하더라도, 핸들을 완전히 돌린 상태에서는 오일양의 유입이 저하되므로 유압이 떨어지므로 자연히 엔진회전수도 저하된다.In such a power-steering-operated vehicle, when the steering wheel is fully rotated to change the direction of the vehicle such as U-turn or cornering of the road, Even if the speed is increased while turning at a constant steering angle in accordance with the steering characteristics of the steering wheel, the inflow of the oil level is lowered when the steering wheel is completely turned, Naturally, the engine rotation is also reduced.
이때, 파워 스티어링 압력스위치의 조작에 의해 엔진의 회전수를 높여주고 있으나, 기어박스에 무리한 부하가 걸림에 따라 오일양의 공급이 차단되어 유압이 저하되기 때문에 가속페달을 밟아도 엔진의 회전 rpm은 급격히 떨어지게 되고, 심지어는 엔진이 꺼지는 경우도 발생하는 문제점을 내포하고 있다.At this time, although the rotation speed of the engine is increased by the operation of the power steering pressure switch, since the oil supply is cut off due to an excessive load applied to the gear box, the hydraulic pressure is lowered. Therefore, even if the accelerator pedal is depressed, And even when the engine is turned off.
따라서, 본 발명은 상기의 제반 문제점을 해결하기 위하여 안출된 것으로서, 파워 스티어링 압력스위치의 필요없이 엔진의 회전rpm이 소정 회전수 이하로 떨어질 때 응답특성이 좋은 비동기 연료분사를 통하여 상기 저하된 엔진회전 rpm을 상승시키도록 보상하는 파워 스티어링 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법을 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an asynchronous fuel injection system, (rpm) reduction with respect to a full power steering turn which compensates for an increase in the rpm.
상기 목적을 달성하기 위하여 본 발명은, 파워 스티어링의 풀 턴에 따라 가속페달을 밟는 단계; 상기 가속페달의 답력시 엔진회전수가 급감소하는가를 판단하여 급감하지 않으면 동기화시간동안 연료분사를 수행하는 단계; 상기 엔진회전수가 급감하면 엔진의 아이들링 상태를 판단하는 단계; 상기 아이들링 상태이면 엔진회전수를 설정회전수와의 대소관계를 판단하여 이하이면, 응답시간이 빠른 비동기 연료분사를 수행하고, 그렇지 않으면 종료하는 단계; 및 상기 비동기 연료분사시에 순간적인 연료를 공급하여 엔진회전수를 보상하는 단계를 포함하는 파워핸들의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법을 제공한다.To achieve the above object, according to the present invention, there is provided a method of controlling a power steering apparatus comprising steps of: depressing an accelerator pedal according to a full turn of a power steering; Determining whether the engine speed decreases rapidly when the accelerator pedal is depressed and performing fuel injection during a synchronization time if the accelerator pedal does not decrease rapidly; Determining an idling state of the engine when the engine speed decreases rapidly; Determining whether the engine speed is in the idling state with respect to the set rotation speed and if not, performing the asynchronous fuel injection with a quick response time; And a step of compensating an engine speed by supplying an instant fuel at the time of the asynchronous fuel injection. The present invention also provides a method for preventing a reduction in the number of revolutions (rpm) according to a full turn of a power handle.
이하, 첨부된 제1도를 참조하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 발명에 의한 파워 스티어링의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법을 구현하기 위한 처리흐름도; 제2도는 제1도의 타이밍도이다.FIG. 1 is a processing flowchart for implementing a method of preventing rpm reduction according to a full turn of power steering according to the present invention; FIG. FIG. 2 is a timing diagram of FIG.
본 발명에 의한 파워 스티어링의 풀(full) 턴(turn)에 따른 회전수(rpm) 저하 방지방법은 핸들의 조향시 오일압의 저하에 의해 급감하는 엔진회전수가 상승할 수 있도록 보상하기 위한 것으로, 제1도에 도시한 바와 같이 파워 스티어링의 풀 턴에 따라 가속페달을 밟아 엔진회전수가 급감하는가를 판단하는 단계를 수행한다(11,12).The present invention provides a method for preventing a reduction in the number of revolutions (rpm) due to a full turn of power steering to compensate for a decrease in engine speed due to a decrease in oil pressure during steering of the steering wheel. As shown in FIG. 1, a step of determining whether the number of revolutions of the engine is reduced by stepping on the accelerator pedal according to the full turn of the power steering is performed (11, 12).
이때, 파워 스티어링의 부하는 급상승을 하게 되며, 이 시간동안 상기 엔진회전수는 서서히 감소하게 된다. 여기서, 상기 엔진 회전수가 기설정된 rpm으로 감소하지 않으면 동기화된 연료분사 시간을 가지고 연료공급을 수행하고 종료하는 단계를 거친다(14).At this time, the load of the power steering rises sharply, and the engine speed gradually decreases during this time. Here, if the engine speed does not decrease to a preset rpm, the fuel supply is performed with the synchronized fuel injection time and the step ends (14).
그리고, 상기 엔진 회전수가 파워스티어링에 걸리는 부하시간에 따라 급격히 떨어지면, 엔진회전수가 아이들링 상태인가를 판단한다(15).If the engine speed suddenly drops according to the load time required for power steering, it is determined whether the engine speed is in the idling state (15).
상기 엔진 회전수가 아이들링 상태가 아니면 종료를 하고, 상기 엔진 회전수가 아이들링 상태에서 설정회전수인 500rpm과의 대소관계를 판단하여 500rpm이하이면, 응답시간이 빠른 비동기 연료분사를 수행하고, 그렇지 않으면 종료하는 단계를 수행한다(16,17).If the engine speed is not in the idling state, the engine speed is terminated. If the engine speed is less than 500 rpm in the idling state, the asynchronous fuel injection is performed at a high response time. (16, 17).
상기 단계 수행 후 엔진 회전수가 급감하는 시간만큼 비동기 연료분사 구간동안 순간적인 연료를 공급하여 엔진 회전수를 보상한다(18).The engine speed is compensated for by supplying the instantaneous fuel during the asynchronous fuel injection period by the time the number of revolutions of the engine rapidly decreases after performing the step (18).
본 실시예에서는 엔진회전수가 500rpm에서 최소 700rpm으로 보상시키므로서 엔진구동이 정지하는 것을 방지한다.In this embodiment, the engine speed is compensated to be at least 700 rpm at 500 rpm, thereby preventing the engine from being stopped.
상기와 같은 처리흐름에 따른 타이밍도를 참조하여 좀더 부연하자면, 파워스티어링의 부하가 상승곡선으로 향할 때, 엔진회전수는 서서히 감소하게 되며, 이때 1점쇄선으로 표시한 상태로 엔진회전수가 급감할 때 순간적인 비동기 연료분사를 수행한다. 이렇게 하면 엔진회전수가 아이들링 상태에서 일정시간 경과후 원위치상태로 되면서 파워스티어링의 풀 턴이 해제될 때까지 서서히 감소하게 되는 것이다. 그리고, 파워스티어링의 부하가 최고로 많이 걸릴때 엔진rpm은 최저상태가 되나, 이는 엔진이 안정하게 회전할 수 있는 최저상태로 되고, 상기 파워스티어링의 부하가 감소하면 엔진rpm은 증가하고, 원래대로 동기 연료분사를 일정시간동안 반복적으로 수행하게 되는 것이다.Referring to the timing chart according to the above-described process flow, more specifically, when the load of the power steering is directed to the rising curve, the engine speed gradually decreases. At this time, And performs instantaneous asynchronous fuel injection. As a result, the engine speed is gradually reduced from the idling state to the home state after the lapse of a predetermined time until the full turn of the power steering is released. Then, when the load of the power steering takes the maximum load, the engine rpm becomes the lowest state, but this becomes the lowest state where the engine can rotate stably. When the load of the power steering decreases, the engine rpm increases, Fuel injection is repeatedly performed for a predetermined time.
전술한 바와 같이, 파워스티어링의 풀 턴에 따른 부하에 의해 엔진 회전수가 급감하는 것을 소정시간동안 비동기화된 연료분사를 수행하여 순간적인 연료보상으로 엔진회전수를 높이므로서 엔진이 꺼지는 현상을 방지하는 효과를 가진다.As described above, since the engine rotation speed is reduced by the load due to the full turn of the power steering, the asynchronous fuel injection is performed for a predetermined time to increase the engine rotation speed by instantaneous fuel compensation to prevent the engine from turning off .
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960022637A KR0185340B1 (en) | 1996-06-20 | 1996-06-20 | Method for preventing the reduction of rpm by full turn of power steering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960022637A KR0185340B1 (en) | 1996-06-20 | 1996-06-20 | Method for preventing the reduction of rpm by full turn of power steering |
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| Publication Number | Publication Date |
|---|---|
| KR980002726A KR980002726A (en) | 1998-03-30 |
| KR0185340B1 true KR0185340B1 (en) | 1999-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019960022637A KR0185340B1 (en) | 1996-06-20 | 1996-06-20 | Method for preventing the reduction of rpm by full turn of power steering |
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