CN210919287U

CN210919287U - Fuel tank pipeline system of double-fuel vehicle

Info

Publication number: CN210919287U
Application number: CN201921723516.3U
Authority: CN
Inventors: 冯克武; 詹和锋; 周尚燕
Original assignee: Chengdu Lingchuan Vehicle Oil Tank Co ltd
Current assignee: Chengdu Lingchuan Vehicle Oil Tank Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-03
Anticipated expiration: 2029-10-15

Abstract

The utility model provides a pair of dual fuel vehicle oil tank pipe-line system, including little oil tank, big oil tank, little fuel pump, big fuel pump, carbon tank and engine, just be connected with the engine through advancing oil pipe on the little oil tank of little fuel pump installation, big fuel pump is installed on big oil tank and is connected with the engine through advancing the mellow wine pipe, little oil tank and big oil tank are installed side by side, little oil tank top is installed and is refueled limit valve and gravity valve, discharge valve is installed at big oil tank top, refuel limit valve, gravity valve and discharge valve are connected with the carbon tank import through the pipeline respectively, the carbon tank export is connected with the air intake manifold of engine. Compared with the prior art, the utility model discloses following beneficial effect has: the big and small oil tanks are installed in a parallel mode and share one carbon tank, so that the pipeline arrangement is reduced, the cost is saved, the installation procedure is simplified, and the later maintenance is also convenient.

Description

Fuel tank pipeline system of double-fuel vehicle

Technical Field

The utility model relates to a vehicle oil tank system technical field, concretely relates to dual-fuel vehicle oil tank pipe-line system.

Background

It is well known that with the ever increasing consumption of energy, the worldwide energy shortage has been an unchangeable fact. In the automobile industry, the fuel oil tension is further increased along with the sharp increase of the automobile output, and the compulsory fuel oil consumption regulation and exhaust emission regulation of each country also promote the governments of each country to forcibly and politely guide automobile manufacturers to seek for the way so as to develop automobile products with low fuel consumption and low emission as soon as possible.

With the development of the coal chemical industry, methanol is increasingly used as a fuel for automobiles as a low-cost and low-pollution fuel. However, due to the poor starting performance of pure methanol fuel automobiles, few methanol feeding points and the like, dual-fuel automobiles have come to be operated, namely, the dual-fuel automobiles respectively store gasoline and methanol, the gasoline is used by the engine when the automobiles are started, and the methanol is used as fuel after the engine works stably.

At present, in order to prevent mutual leakage, the oil tank of the existing double-fuel vehicle adopts separate manufacture and installation, and is respectively provided with a carbon tank, so that the cost is high, the connecting pipeline is complex, and the automobile with limited installation space is difficult to arrange in space, has multiple processes and brings inconvenience to later maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two fuel car oil tank pipe-line system to solve among the prior art two fuel car's oil tank and in order to prevent mutual seepage, adopt separately preparation and installation, dispose a carbon tank separately, with high costs, and connecting line is complicated, to the limited car of installation space, the spatial arrangement difficulty, the process is many, the problem of inconvenience is brought for later maintenance.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of dual-fuel vehicle oil tank pipe-line system, including little oil tank, big oil tank, little fuel pump, big fuel pump, carbon tank and engine, little fuel pump installation on the little oil tank and through advancing oil pipe with the engine is connected, big fuel pump is installed on the big oil tank and through advancing the mellow wine pipe with the engine is connected, little oil tank and big oil tank are installed side by side, little oil tank top is installed and is refueled limit valve and gravity valve, discharge valve is installed at big oil tank top, refuel limit valve, gravity valve and discharge valve respectively through the pipeline with the carbon tank import is connected, the carbon tank export with the air intake manifold of engine is connected.

Furthermore, the oil inlet pipe is provided with a first electromagnetic valve electrically connected with the small fuel pump, the alcohol inlet pipe is provided with a second electromagnetic valve electrically connected with the large fuel pump, the outlet pipeline of the carbon tank is provided with a third electromagnetic valve, and the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are controlled in an interlocking mode.

Furthermore, the oil inlet pipe is connected in parallel with an oil return pipe communicated with the engine and the small oil tank, and the alcohol inlet pipe is connected in parallel with an alcohol return pipe communicated with the engine and the large oil tank.

Furthermore, the outlet of the carbon tank is an exhaust port and is positioned in the middle of the top end; two independent adsorption areas are arranged on two sides of the outlet, the inlet of one adsorption area is connected with a first liquid accumulating box through a pipeline, and the first liquid accumulating box is respectively communicated with the oil filling limit valve and the gravity valve through pipelines; the inlet of the other adsorption area is connected with a second liquid accumulating box through a pipeline, and the second liquid accumulating box is communicated with the exhaust valve through a pipeline.

Furthermore, liquid discharge ports are formed in the bottoms of the first liquid accumulating box and the second liquid accumulating box and are communicated with the small oil tank and the large oil tank through pipelines respectively.

Further, a first one-way valve is installed on a pipeline between the first liquid accumulating box and the carbon tank, and a second one-way valve is installed on a pipeline between the second liquid accumulating box and the carbon tank.

Compared with the prior art, the utility model provides a double fuel vehicle oil tank pipe-line system has following beneficial effect:

1. the large oil tank and the small oil tank are arranged in parallel and share one carbon tank, so that the pipeline arrangement is reduced, the cost is saved, the installation procedure is simplified, and the later maintenance is convenient;

2. the first liquid accumulating box and the second liquid accumulating box can play a role in accumulating and buffering fuel liquid, effectively solve the problem that liquid fuel in large and small oil tanks enters the carbon tank to cause the carbon tank to lose efficacy, reduce environmental pollution and improve the utilization efficiency of the fuel;

3. the first one-way valve and the second one-way valve are arranged, so that mutual leakage of fuel oil in the small oil tank and methanol in the large oil tank is effectively isolated, and pollution between the fuel oil is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals are explained below:

1: a small oil tank 2: large oil tank

3: the small fuel pump 4: large fuel pump

5: and (4) a carbon tank 6: engine

7: an oil inlet pipe 8: alcohol inlet pipe

9: oil filling limit valve 10: gravity valve

11: exhaust valve 12: first electromagnetic valve

13: second electromagnetic valve 14: third solenoid valve

15: oil return pipe 16: alcohol return pipe

17: first liquid trap box 18: second liquid loading box

19: first check valve 20: second check valve

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1, the utility model provides a dual-fuel vehicle oil tank pipeline system, including small fuel tank 1, big fuel tank 2, small fuel pump 3, big fuel pump 4, carbon tank 5 and engine 6, small fuel pump 3 installs on small fuel tank 1 and is connected with engine 6 through advancing oil pipe 7, big fuel pump 4 installs on big fuel tank 2 and is connected with engine 6 through advancing alcohol pipe 8; the small oil tank 1 and the large oil tank 2 are arranged in parallel, the small oil tank 1 is used for filling fuel oil such as gasoline, diesel oil and the like, the top of the small oil tank is provided with a refueling limit valve 9 and a gravity valve 10, the refueling limit valve 9 is used for ensuring the sufficient oil gas discharge amount when the small oil tank 1 is filled with the fuel oil, and the gravity valve 10 is used for ensuring the ventilation requirement of the small oil tank 1 in daily work; the large oil tank 2 is used for filling methanol, an exhaust valve 11 is installed at the top of the large oil tank, the filling amount limiting valve 9, the gravity valve 10 and the exhaust valve 11 are respectively connected with an inlet of the carbon tank 5 through pipelines, and an outlet of the carbon tank 5 is connected with an intake manifold of the engine 6. The big and small oil tanks are installed in a parallel mode and share one carbon tank, so that the pipeline arrangement is reduced, the cost is saved, the installation procedure is simplified, and the later maintenance is also convenient.

A first electromagnetic valve 12 electrically connected with the small fuel pump 3 is installed on the oil inlet pipe 7, a second electromagnetic valve 13 electrically connected with the large fuel pump 4 is installed on the alcohol inlet pipe 8, a third electromagnetic valve 14 is installed on an outlet pipeline of the carbon tank 5, and the first electromagnetic valve 12, the second electromagnetic valve 13 and the third electromagnetic valve 14 are mutually interlocked and controlled, namely when the first electromagnetic valve 12 and the third electromagnetic valve 14 are opened, the second electromagnetic valve 13 is closed; when the second solenoid valve 13 and the third solenoid valve 14 are opened, the first solenoid valve 12 is closed. For example, when an automobile is started, the ECU of the engine 6 controls the first electromagnetic valve 12 to be opened, the small fuel pump 3 to act, fuel is pumped into the engine 6 for starting the automobile, and meanwhile, the third electromagnetic valve 14 is opened, so that fuel steam in the carbon tank 5 enters the engine 6 under the suction force of the engine 6 to participate in combustion, the fuel utilization rate is increased, and the fuel consumption and the fuel discharge are reduced; after the engine 6 works stably, the large oil tank 2 is switched under the control of the ECU, the second electromagnetic valve 13 and the large fuel pump 4 are opened to pump methanol fuel into the engine 6, and meanwhile, the third electromagnetic valve 14 is opened, so that methanol steam in the carbon tank 5 enters the engine 6 under the suction force of the engine 6 to participate in combustion, the methanol utilization rate is increased, and the methanol consumption and the methanol discharge are reduced. When the automobile stops and the engine 6 is flamed out, the three electromagnetic valves are all closed, due to the tightness of the large oil tank and the small oil tank, the negative pressure inside the large oil tank and the small oil tank can be caused by the consumption of fuel in the prior art, under the action of the negative pressure, fuel oil and methanol steam can be volatilized more easily than under the normal pressure, the balance with the atmospheric pressure is finally achieved, and then along with the diffusion movement of the molecules, a part of fuel oil and methanol steam molecules can be diffused to the carbon tank 5 through respective valves and pipelines, so that the fuel oil and methanol steam are firmly locked in the carbon tank 5, and the air pollution caused by the diffusion to the atmosphere is prevented.

The oil inlet pipe 7 is connected in parallel with an oil return pipe 15 communicated with the engine 6 and the small oil tank 1, the alcohol inlet pipe 8 is connected in parallel with an alcohol return pipe 16 communicated with the engine 6 and the large oil tank 2, and the oil return pipe 15 and the alcohol return pipe 16 are used for returning redundant fuel in the engine 6.

The outlet of the carbon tank 5 is an exhaust port and is positioned in the middle of the top end; two independent adsorption areas are arranged on two sides of the outlet, the inlet of one adsorption area is connected with a first liquid accumulating box 17 through a pipeline, and the first liquid accumulating box 17 is respectively communicated with the oiling limit valve 9 and the gravity valve 10 through pipelines; the inlet of the other adsorption zone is connected with a second liquid accumulating box 18 through a pipeline, and the second liquid accumulating box 18 is communicated with the exhaust valve 11 through a pipeline. The bottoms of the first liquid accumulation box 17 and the second liquid accumulation box 18 are respectively provided with a liquid outlet which is respectively communicated with the small oil tank 1 and the large oil tank 2 through pipelines. The first liquid accumulating box and the second liquid accumulating box are arranged to play a role in accumulating and buffering fuel liquid, the problem that liquid fuel in large and small oil tanks enters carbon tanks to cause failure of the carbon tanks is effectively solved, environmental pollution is reduced, and the utilization efficiency of the fuel is improved.

A first check valve 19 is arranged on a pipeline between the first liquid accumulating box 17 and the carbon tank 5, and a second check valve 20 is arranged on a pipeline between the second liquid accumulating box 18 and the carbon tank 5. The first one-way valve and the second one-way valve are arranged, so that mutual leakage of fuel oil in the small oil tank and methanol in the large oil tank is effectively isolated, and pollution between the fuel oil is avoided.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a two fuel tank pipe-line system of fuel car, includes little oil tank (1), big oil tank (2), little fuel pump (3), big fuel pump (4), carbon tank (5) and engine (6), little fuel pump (3) are installed on little oil tank (1) and through advancing oil pipe (7) with engine (6) are connected, big fuel pump (4) are installed on big oil tank (2) and through advancing alcohol pipe (8) with engine (6) are connected, its characterized in that, little oil tank (1) and big oil tank (2) are installed side by side, refuel limit valve (9) and gravity valve (10) are installed at little oil tank (1) top, discharge valve (11) are installed at big oil tank (2) top, refuel limit valve (9), gravity valve (10) and discharge valve (11) respectively through the pipeline with carbon tank (5) import is connected, the outlet of the carbon tank (5) is connected with an air inlet manifold of the engine (6).

2. The dual-fuel vehicle oil tank pipeline system according to claim 1, wherein a first electromagnetic valve (12) electrically connected with the small fuel pump (3) is installed on the oil inlet pipe (7), a second electromagnetic valve (13) electrically connected with the large fuel pump (4) is installed on the alcohol inlet pipe (8), a third electromagnetic valve (14) is installed on the outlet pipeline of the carbon tank (5), and the first electromagnetic valve (12), the second electromagnetic valve (13) and the third electromagnetic valve (14) are controlled in an interlocking manner.

3. The dual fuel vehicle tank piping system according to claim 1 or 2, wherein the oil inlet pipe (7) is connected in parallel with an oil return pipe (15) communicating the engine (6) and the small oil tank (1), and the oil inlet pipe (8) is connected in parallel with an alcohol return pipe (16) communicating the engine (6) and the large oil tank (2).

4. A dual fuel vehicle tank piping system according to claim 1 or 2, wherein the carbon canister (5) outlet is an exhaust port located in the middle of the top end; two independent adsorption areas are arranged on two sides of the outlet, the inlet of one adsorption area is connected with a first liquid accumulating box (17) through a pipeline, and the first liquid accumulating box (17) is respectively communicated with the oiling limit valve (9) and the gravity valve (10) through pipelines; the inlet of the other adsorption area is connected with a second liquid accumulating box (18) through a pipeline, and the second liquid accumulating box (18) is communicated with the exhaust valve (11) through a pipeline.

5. The dual-fuel vehicle oil tank pipeline system according to claim 4, wherein the first liquid accumulating box (17) and the second liquid accumulating box (18) are provided with liquid discharging ports at the bottoms thereof, and the liquid discharging ports are respectively communicated with the small oil tank (1) and the large oil tank (2) through pipelines.

6. A dual fuel vehicle tank piping system according to claim 5, wherein a first check valve (19) is installed on a pipe between the first liquid accumulating box (17) and the canister (5), and a second check valve (20) is installed on a pipe between the second liquid accumulating box (18) and the canister (5).