KR100294844B1 - Structure for maintaining fuel pressure of post-braking of vehicle - Google Patents

Structure for maintaining fuel pressure of post-braking of vehicle Download PDF

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Publication number
KR100294844B1
KR100294844B1 KR1019970072914A KR19970072914A KR100294844B1 KR 100294844 B1 KR100294844 B1 KR 100294844B1 KR 1019970072914 A KR1019970072914 A KR 1019970072914A KR 19970072914 A KR19970072914 A KR 19970072914A KR 100294844 B1 KR100294844 B1 KR 100294844B1
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South Korea
Prior art keywords
fuel
braking
vehicle
pump
filling cover
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KR1019970072914A
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Korean (ko)
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KR19990053292A (en
Inventor
장성환
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류정열
기아자동차주식회사
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Priority to KR1019970072914A priority Critical patent/KR100294844B1/en
Publication of KR19990053292A publication Critical patent/KR19990053292A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03243—Fuel tanks characterised by special pumps, the mounting thereof

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE: A structure for maintaining fuel pressure of post-braking of a vehicle is provided to remove acceleration lag, to prevent starting stop of the engine, and to improve marketability and safety of a vehicle. CONSTITUTION: An inlet part(12a) of a fuel pump(12) is installed to the bottom of a fuel tank(11). Vertical walls(13) are installed to the bottom of the fuel tank of a front side of the fuel pump. A fuel filling cover(14) is installed to the front end of the inlet part of the fuel pump. The fuel filling cover has a vent hole for inflow of fuel when the quantity of residual fuel is minimal. Because the inlet of the inlet part of the fuel pump is installed to the inner part of the fuel filling cover the fuel pump pumps the fuel flowed into the inside of the fuel filling cover and the fuel pressure can be maintained.

Description

자동차의 제동후 연료압력 유지구조Fuel pressure maintenance structure after braking

본 발명은 자동차의 제동후에 일시적으로 연료의 압력이 저하되는 현상을 방지할 수 있도록 하는 자동차의 제동후 연료압력 유지구조에 관한 것으로, 더 자세하게는 제동후 순간적인 연료쏠림이 일어나더라도 연료펌프에 정상적으로 연료가 공급될 수 있도록 한 것에 관한 것이다.The present invention relates to a structure for maintaining fuel pressure after braking to prevent a phenomenon in which the pressure of the fuel is temporarily lowered after braking of the vehicle. More specifically, the fuel pump normally maintains even after momentary fueling occurs after braking. To allow fuel to be supplied.

일반적으로 자동차의 연료는 연료탱크에 설치된 연료펌프를 통해 펌핑되어 엔진으로 공급되는 바, 연료탱크에 연료가 충분하게 채워져 있는 경우에는 제동시에 연료가 연료탱크의 전방부위로 쏠리게 되더라도 연료펌프 하단의 유입부가 연료에 닿게 되므로 재출발시에 충분한 연료를 공급할 수 있게 되지만 연료탱크의 연료가 일정량이하가 저하되면(예컨데 35리터 이하가 되면) 도 1과 같은 종래구조에 있어서는 제동시에 연료탱크(21)에 전방부위로 쏠리게 되는 연료가 일시적으로 연료펌프(22)의 유입부(22a)가 연료에서 이탈되어 재출발시에 충분한 연료를 공급할 수 없게 된다.In general, the fuel of an automobile is pumped through a fuel pump installed in a fuel tank to be supplied to an engine. When the fuel tank is sufficiently filled with fuel, the fuel flows into the lower portion of the fuel tank even when the fuel is concentrated in front of the fuel tank during braking. Since the additional fuel comes in contact with the fuel, it is possible to supply sufficient fuel at the time of restarting. However, when the amount of fuel in the fuel tank falls below a certain amount (for example, 35 liters or less), in the conventional structure as shown in FIG. The fuel that is directed to the site temporarily escapes the inlet portion 22a of the fuel pump 22 and becomes unable to supply sufficient fuel upon restart.

즉, 도 1에 도시한 종래구조에 있어서는 연료펌프(22)의 유입부(22a)가 그대로 연료탱크(21a)의 하단에 노출되기 때문에 비록 연료펌프(22)의 일측에 수직벽(23)이 설치되어 있다고 하더라도 연료탱크(21)의 연료량이 충분하지 못한 경우에는 제동후에 연료탱크(21)의 연료가 전방으로 쏠려 연료펌프(22)의 유입부(22a)가 연료로부터 이탈될 우려가 많게 되며, 이와 같은 연료가 쏠림현상이 해제되지 않은 상태에서 자동차를 출발시키게 되면 연료펌프(22)의 유입부(22a)를 통해 공기가 혼입되어 연료압력이 저하되므로 도 2의 그래프와 같이 초기가속이 지연되는 문제가 있었다.That is, in the conventional structure shown in FIG. 1, since the inlet part 22a of the fuel pump 22 is directly exposed to the lower end of the fuel tank 21a, the vertical wall 23 is formed on one side of the fuel pump 22. Even if it is installed, if the fuel amount of the fuel tank 21 is not enough, the fuel in the fuel tank 21 is forwarded after braking, there is a high possibility that the inlet 22a of the fuel pump 22 is separated from the fuel. When starting the vehicle in such a state that the fuel is not released, the air is mixed through the inlet 22a of the fuel pump 22 and the fuel pressure is lowered. Therefore, the initial acceleration is delayed as shown in the graph of FIG. 2. There was a problem.

또한 상기 종래구조에 있어서는 연료탱크(21)의 연료잔류량이 아주 적게 되면(예컨데 15리터이하가 되면) 상기와 같은 연료의 순간적인 쏠림시에 아예 엔진의 시동이 꺼지게 되는 일도 종종 있게 되어 각종 안전사고를 유발하게 될 우려가 많았다.In addition, in the conventional structure, when the fuel residual amount of the fuel tank 21 is very small (for example, 15 liters or less), the engine is often turned off when the fuel is momentarily dropped, and various safety accidents are caused. There was a lot of concern.

본 발명은 상기 종래구조의 제결함을 감안하여 안출한 것이며, 그 목적은 연료탱크의 잔류연료량이 적을 때에 제동후 연료의 순간적인 쏠림현상이 발생하더라도 연료펌프의 유입부를 통해 유입되는 연료의 압력을 변동없이 유지할 수 있도록 하는 것에 의해 연료의 순간쏠림에 따른 가속지연을 방지할 수 있도록 하는 자동차의 제동후 연료압력 유지구조를 제공하는 데에 있는 것이다.The present invention has been made in view of the deficiency of the conventional structure, and its object is to reduce the pressure of the fuel flowing through the inlet of the fuel pump even if the instantaneous tipping of the fuel occurs after braking when the amount of remaining fuel in the fuel tank is small. It is to provide a fuel pressure maintaining structure after braking of a vehicle which can prevent the acceleration delay caused by the fuel tipping by allowing it to be maintained without change.

도 1은 종래구조의 구성도1 is a block diagram of a conventional structure

도 2는 종래구조의 제동에서 재출발까지의 연료압력 변동 그래프2 is a graph of fuel pressure fluctuation from braking to restarting of the conventional structure;

도 3은 본 발명의 구성도3 is a block diagram of the present invention

도 4는 본 발명의 요부 사시도4 is a perspective view of main parts of the present invention;

도 5는 본 발명의 요부 단면도5 is a cross-sectional view of main parts of the present invention.

도 6은 도 2에 대비한 본 발명의 제동에서 재출발까지의 연료압력 변동 그래프6 is a graph showing fuel pressure fluctuations from braking to restarting of the present invention compared to FIG.

* 도면중 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

11 : 연료탱크 12 : 연료펌부11 fuel tank 12 fuel pump

12a : 유입부 13 : 수직벽12a: inlet portion 13: vertical wall

14 : 연료충전커버 14a : 통공14 fuel cover 14a: through hole

본 발명은 상기의 목적을 달성하기 위하여 연료펌프의 유입부에 연료를 항상 채워둘 수 있도록 하는 연료충전커버을 설치하는 것을 특징으로 하며, 이하 그 구체적인 기술내용을 첨부도면에 의거하여 더욱 자세히 설명하면 다음과 같다.The present invention is characterized in that to install the fuel filling cover to always fill the fuel inlet to the fuel pump in order to achieve the above object, the following detailed description based on the accompanying drawings Same as

즉, 본 발명은 연료펌프(12)의 유입부(12a)가 연료탱크(11)의 하단부에 설치되고, 연료펌프(12)의 전방 일측의 연료탱크(11) 하단에 수직벽(13)이 설치되는 것에 있어서, 상기 연료펌프(12)의 유입부(12a) 선단에 전방부의 면적이 크고 후방부의 면적이 작은 연료충전커버(14)를 설치하여서 되는 것이다.That is, in the present invention, the inlet 12a of the fuel pump 12 is installed at the lower end of the fuel tank 11, and the vertical wall 13 is disposed at the lower end of the fuel tank 11 on one side of the front side of the fuel pump 12. In this case, a fuel filling cover 14 having a large front portion and a small rear portion is provided at the tip of the inlet portion 12a of the fuel pump 12.

도시된 실시예에서 장방형의 깔대기형으로 구성되는 연료충전커버(14)는 연료탱크(11)의 연료잔류량이 최소치일 때에도 그 내부로 연료가 유입될 수 있도록 그의 하단에 통공(14a)이 형성된 형태를 갖는다.In the illustrated embodiment, the fuel filling cover 14 having a rectangular funnel has a shape in which a through hole 14a is formed at a lower end thereof so that fuel can be introduced into the fuel tank 11 even when the fuel residual amount of the fuel tank 11 is minimum. Has

상기와 같이 구성된 본 발명에 있어서는 연료펌프(12)의 유입부(12a)의 유입측이 연료충전커버(14)의 내부에 설치되어 있기 때문에 연료펌프(12)가 연료충전커버(14)의 내부로 유입된 연료를 펌핑하게 되는 것으로, 연료탱크(11)의 연료잔류량이 그리 많지 않을 때에 자동차를 제동하여 연료가 일측으로 쏠리게 되더라도 연료충전커버(14)에는 연료가 항상 충전되어 있기 때문에 자동차의 재출발시에 연료압력을 그대로 유지시킬 수 있게 되어 도 6의 그래프와 같이 가속지연현상을 현저하게 저감할 수 있게 된다.In the present invention configured as described above, since the inflow side of the inflow portion 12a of the fuel pump 12 is provided inside the fuel filling cover 14, the fuel pump 12 is inside the fuel filling cover 14. By pumping the fuel introduced into the fuel tank 11, even when the fuel remaining in the fuel tank 11 is not much, even if the fuel is concentrated to one side, even if the fuel charge cover 14 is always filled with fuel, restarting the vehicle Since the fuel pressure can be maintained as it is, the acceleration delay phenomenon can be significantly reduced as shown in the graph of FIG. 6.

따라서 본 발명에 의하면 연료탱크의 연료잔류량이 많지 않을 때에 자동차를 제동하여 순간적인 연료 쏠림현상이 생기더라도 연료의 공급압력을 일정하게 유지할 수 있게 되어 가속지연현상을 없앨 수 되고 엔진의 시동정지를 방지할 수 있게 되므로 자동차의 상품성과 안전성을 크게 향상시킬 수 있게 되는 효과를 얻을 수 있게 된다.Therefore, according to the present invention, when the fuel tank does not have a large amount of fuel remaining, it is possible to maintain a constant fuel supply pressure even when the fuel is suddenly caught by braking the vehicle, thereby eliminating the acceleration delay phenomenon and preventing starting of the engine. As a result, the merchandise and safety of the car can be greatly improved.

Claims (2)

연료펌프(12)의 유입부(12a)가 연료탱크(11)의 하단부에 설치되고, 연료펌프(12)의 전방 일측의 연료탱크(11) 하단에 수직벽(13)이 설치되는 것에 있어서, 상기 연료펌프(12)의 유입부(12a) 선단에 전방부의 면적이 크고 후방부의 면적이 작은 연료충전커버(14)를 설치한 것을 특징으로 하는 자동차의 제동후 연료압력 유지장치.In the inlet portion 12a of the fuel pump 12 is installed at the lower end of the fuel tank 11, the vertical wall 13 is provided at the lower end of the fuel tank 11 of the front side of the fuel pump 12, The fuel pressure maintaining device after braking of a vehicle, characterized in that a fuel filling cover 14 having a large front portion and a small rear portion is installed at the tip of the inlet portion 12a of the fuel pump 12. 청구항 1에 있어서, 연료충전커버(14)의 하단에 통공(14a)을 형성하여 연료탱크(11)의 연료잔류량이 적을 때에도 그 내부로 연료가 유입될 수 있도록 한 것을 특징으로 하는 자동차의 제동후 연료압력 유지장치.The method of claim 1, wherein the through-hole 14a is formed at the lower end of the fuel filling cover 14 so that fuel can be introduced into the fuel tank 11 even when the amount of fuel remaining in the fuel tank 11 is small. Fuel pressure maintainer.
KR1019970072914A 1997-12-24 1997-12-24 Structure for maintaining fuel pressure of post-braking of vehicle KR100294844B1 (en)

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KR100294844B1 true KR100294844B1 (en) 2001-07-12

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970041483U (en) * 1995-12-13 1997-07-29 현대자동차주식회사 Fuel suction device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970041483U (en) * 1995-12-13 1997-07-29 현대자동차주식회사 Fuel suction device

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