CN202532046U - Engine fuel tube - Google Patents

Abstract

The utility model discloses an engine fuel tube. The engine fuel tube comprises a rubber tube body, an inner tube with a small diameter is arranged in the rubber tube body, and the inner tube is formed by an inner tube rubber layer, a middle fiber line reinforced layer and an outer tube rubber layer, or formed by a composite inner tube rubber layer, the middle fiber line reinforced layer and the outer tube rubber layer, wherein the inner tube rubber layer is made of fluorous rubber, the outer tube rubber layer is made of silicon rubber, and the composite inner tube rubber layer is formed by the fluorous rubber layer and the silicon rubber layer in a composite mode. The production process procedures include weighing and preparing the various rubber materials according to a formulation, mixing the rubber materials, quickly inspecting the rubber materials, extruding the inner tube rubber layer or the composite inner tube rubber layer, weaving the middle fiber line reinforced layer, extruding the outer tube rubber layer, cutting and vulcanizing a rubber tube, washing the rubber tubes , printing logo on the rubber tubes in a transferred mode, inspecting the rubber tubes and packing the rubber tubes. The engine fuel tube has good aging resistance performance and good ozone resistance performance, the inner rubber is good in cleanliness, antiknock pressure is high when oil is hot, and the engine fuel tube has the advantages of being advanced in technology, and low in production cost.

Description

A kind of engine fuel pipe

Technical field

The utility model relates to the auto parts machinery field, especially for a kind of rubber hose of global platform BMW 1 series automobiles motor, and specifically a kind of engine fuel pipe.

Background technique

Along with constantly developing of domestic and international automobile market, automobile, motor output are constantly soaring, and the competition between automobile industry is growing more intense; Auto vendor constantly designs and releases safety and comfort both at home and abroad; Outward appearance is beautiful, and the new automobile of the world and domestic emission standard is satisfied in energy-saving and emission-reduction.This strategy has encouraged BMW group to implement multiple innovation concept, and for example BMW 1 series is 2.0 liters, peak output 150 horsepower engines.In automobile engine fuel oil system; Air inlet rubber pipe to each cylinder generally has strict requirement, because the oily gentle combustion chamber temperature of the direct injection system of motor is higher relatively, the temperature of oil is generally more than 200 degree; If the rubber hose oil resistance is poor; Non-refractory is aging, and it is little to bear pressure, so rubber hose after automobile jolts operation, just be easy to generate be full of cracks throughout the year, wear out, phenomenon such as breakage.The rubber pipe fuel oil easy to leak of crack failure; It is when if slight seepage is arranged, will there be the idling jitter phenomenon in automobile motor in the process of moving, if out in the cold or undiscovered; The seepage severe patient will cause the high temperature fuel injection to be come out, thereby high temperature fuel injection fire hazardous causes bigger harm.Thereby for the rubber fuel pipe, sebific duct is not only wanted oil resistant, bear certain pressure; Ozone-resistant aging property is good; But also require it behind long term thermal oil immersion bubble, the separating substances phenomenon must not be arranged, and separate out if there is finely ground particles to separate, be deposited in the system that will result in blockage in the system.Therefore, have steady quality, the engine fuel pipe of function admirable is the target that each auto vendor is pursued.

Summary of the invention

The utility model technical problem to be solved is to above-mentioned existing technology present situation, and the engine fuel pipe that good, the anti-ozone ageing-resistant performance of a kind of high temperature resistant fuel performance is excellent and can receive high temperature and low temperature alternation is provided.This fuel pipe preparation process is advanced, safety and environmental protection and have that anti-dynamic fatigue property is good, characteristics such as antiknock pressure height behind the good and deep fat of glue turbidity test in the sebific duct.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of engine fuel pipe; Comprise the sebific duct body; The sebific duct body forms the interior pipe of small aperture, and should in the outer tube rubber layer made of the silicone rubber of the interior pipe rubber layer made by the fluorine rubber that contains zine oxide, reinforcing agent successively of pipe and middle fibre threads enhancement layer and Containing Sulfur agent, camel powder forms or by the fluorine rubber that is positioned at inner circular layer and the outer tube rubber layer of silicone rubber making that is positioned at fibre threads enhancement layer and Containing Sulfur agent, the camel powder of combined type pipe rubber layer that the silicone rubber of outer circular layer constitutes and centre form; The sebific duct body is that gluing compound the extruding of one forms the compound electric-jet type rubber hose of extruding of fluorine rubber, silicone rubber that includes the enhancing skeleton.

For optimizing technique scheme, the measure of taking also comprises:

Above-mentioned fibre threads enhancement layer is the aramid line layer that weaves on the pipe rubber layer on interior pipe rubber layer or in the combined type.

The inner orifice internal diameter of above-mentioned sebific duct body is 7.2 millimeters to 7.4 millimeters.

The external diameter of above-mentioned sebific duct body is 13.2 millimeters to 13.4 millimeters.

Above-mentioned sebific duct body adopts peroxide cure, and sebific duct body two-port has the Transverse plane that two ends band hat cone tool sulfuration forms.

Compared with prior art; The sebific duct body of the utility model utilizes fluorine rubber and the compound expressing technique extruding and moulding of silicone rubber; And it is the fibre threads enhancement layer that strengthens skeleton that the sebific duct body contains with the aramid line layer, thus product to have the oil resistant performance good, do not have be full of cracks; The characteristics that the fuel oil infiltration capacity is little and turbidity test are high; The sebific duct body adopts two ends band hat cone tool and peroxide cure not only to improve production efficiency of products, and makes the inside and outside bore high conformity of product, wall thickness dimension even, do not have with other minutes component assemblings back come off, ne-leakage, the generation of no interference phenomenon.The utility model has the advantages that: good, the interior glue turbidity test of the ageing-resistant ozone resistance of sebific duct are good, the dynamic life time under high temperature and the low temperature alternation is long, bear the pressure height; Its manufacturing process is advanced; Manufacturing efficiency is high, satisfies the GS91002-B standard, can be suitable for the installation needs of vehicle.

Description of drawings

Fig. 1 is one of structural representation of the utility model embodiment;

Fig. 2 be the utility model embodiment structural representation two;

Fig. 3 is the longitudinal profile structural representation of Fig. 2.

Embodiment

Embodiment to the utility model describes in further detail below in conjunction with accompanying drawing.

Fig. 1 is extremely shown in Figure 3 to be the structural representation of the utility model.

Reference character wherein is: pipe rubber layer 112, inner circular layer 112a, outer circular layer 112b, fibre threads enhancement layer 12, aramid line layer 121, outer tube rubber layer 13 in sebific duct body 1, interior pipe 1a, Transverse plane 1b, interior pipe rubber layer 111, the combined type.

Embodiment 1; As shown in Figures 2 and 3; A kind of engine fuel pipe of the utility model comprises sebific duct body 1, and sebific duct body 1 forms the interior pipe 1a of small aperture; And should in the outer tube rubber layer 13 made of the interior pipe rubber layer 111 made by the fluorine rubber that contains zine oxide, reinforcing agent successively of pipe 1a and middle fibre threads enhancement layer 12 and Containing Sulfur agent, the silicone rubber of camel powder form; Sebific duct body 1 adopts gluing compound the extruding of 90 extruder one, and the sebific duct body of extruding 1 adopts peroxide cure, and sebific duct body 1 two-port has the Transverse plane 1b that two ends band hat cone tool sulfuration forms.Adopt the even degree of cure high conformity of sebific duct body 1 sulfuration of peroxide cure; Avoided the inconsistent and problem of the glue-line poor adhesion that causes of fluorine rubber and silicone rubber shrinkage; Compare with traditional vulcanization simultaneously; Cure time shortened to 20 minutes from 40 minutes, and not only manufacturing efficiency has improved 1 times, and had guaranteed the quality of product.

Among the embodiment, the fibre threads enhancement layer 12 of the utility model is the aramid line layer 121 of braiding on interior pipe rubber layer 111.Adopt this material of aramid line as the fibre threads enhancement layer 12 that strengthens skeleton; It is the characteristic of utilizing aramid line; The breaking strength of aramid line is more than 180N, and elongation percentage is fit to the kind NOMEX of dynamic fatigue property, and the yarn heat shrinkage is low; Guaranteed that product has pulse performance preferably, aramid line layer 121 can also satisfy the bearing strength of product simultaneously.

Among the embodiment, the diameter of its interior pipe 1a is 7.2 millimeters to 7.4 millimeters behind sebific duct body 1 sulfidization molding of the utility model, is preferably 7.3 millimeters, and the external diameter of sebific duct body 1 is 13.2 millimeters to 13.4 millimeters, is preferably 13.3 millimeters.The fuel pipe of the utility model uses for satisfying global BMW 1 Engine Series oil-fired system; The sebific duct compact dimensions is 7.3 millimeters * 13.3 millimeters of internal diameter φ; Sebific duct body 1 adopts fluorine rubber and the compound expressing technique of silicone rubber; In order to guarantee compound Adhesion force, be added with the tackiness agent small powder in the component of its sizing material, prevented the problem of delamination and local poor adhesion.The sebific duct body 1 of the utility model realized a kind of include strengthen skeleton have fluorine rubber, a compound electric-jet type rubber hose of extruding of silicone rubber.

Embodiment 2; As shown in Figure 1; A kind of engine fuel pipe of the utility model; Comprise sebific duct body 1, sebific duct body 1 is the gluing compound part of extruding of one, and it is 7.2 millimeters to 7.4 millimeters interior pipe 1a that 1 extruding and moulding of sebific duct body has diameter; The outside dimension of sebific duct body 1 is 13.2 millimeters to 13.4 millimeters, the utility model should in the outer tube rubber layer 13 of silicone rubber making of the combined type pipe rubber layer 112 that constitutes by fluorine rubber that is positioned at inner circular layer 112a and the silicone rubber that is positioned at outer circular layer 112b successively of pipe 1a and middle fibre threads enhancement layer 12 and Containing Sulfur agent, camel powder form; This bluk recombination of sebific duct is extruded to form and is included the compound electric-jet type rubber hose of extruding of fluorine rubber, silicone rubber that strengthens skeleton.

Among the embodiment, fibre threads enhancement layer 12 is the aramid line layer 121 that in combined type, weaves on the pipe rubber layer 112.

Among the embodiment, sebific duct body 1 adopts peroxide cure, and sebific duct body 1 two-port has the Transverse plane 1b that two ends band hat cone tool sulfuration forms.

The utility model also provides a kind of production technology of engine fuel pipe, and this technology may further comprise the steps:

Step 1,Take by weighing each gum base ingredients of rubber layer by following prescription, said gum base ingredients is following:

The fluoroelastomer glue stock component is:

Fluorine rubber 100 weight portions

Magnesia 2.5 weight portions

Light calcium oxide 2.3 weight portions

Zine oxide 25 weight portions

Reinforcing agent 990 35 weight portions

Dioctyl ester 5 weight portions

Palm wax 1.2 weight portions

Tackiness agent 5 weight portions

Add up to: 176 weight portions

The silicone rubber compounds component is:

Silicone rubber 88 weight portions

Two 24 1.1 weight portions of vulcanzing agent

Two 25 0.6 weight portions of vulcanzing agent

Camel powder 8.3 weight portions

Defrosting compound 1.2 weight portions

Heat-resistant agent 1.1 weight portions

Look female 0.25 weight portion

Add up to: 100.3 weight portions

Step 2,Above-mentioned fluoroelastomer glue stock component and silicone rubber compounds component are sent into mixer mixing respectively;

Step 3,Fluoroelastomer glue stock after the banburying and silicone rubber compounds are carried out fast seizure test, specify index parameter to control Mooney viscosity, the time of scorch of sizing material, so that the expressing technique in the operation of back;

Step 4,90 extruders that fluoroelastomer glue stock behind the fast seizure test and silicone rubber compounds are put into the straight type head with two spouts are respectively extruded the fluorine rubber pipe rubber layer that has inner orifice or are extruded the fluorine rubber and the silicone rubber combined type that have inner orifice and manage rubber layer;

Step 5,Adopting knitting machine directly in interior pipe rubber layer of extruding or combined type, to knit out with the aramid line layer on the pipe rubber layer serves as the fibre threads enhancement layer that strengthens skeleton, makes and contain the pipe that strengthens skeleton;

Step 6,The T type head that above-mentioned pipe is directly got into 90 extruders is extruded the semi-finished product sebific duct that contains silicone rubber compounds outer tube rubber layer;

Step 7,Above-mentioned semi-finished product sebific duct is cut off, send into sulfurizing pot vulcanization behind the cover die and obtain semi-finished product sebific duct body;

Step 8,With making this product behind the washing of semi-finished product sebific duct body, bat printing sign and the test package.

7, the production technology of a kind of engine fuel pipe according to claim 6 is characterized in that: described Step 2Middle sizing material adopts reverse method of mixing; Adopt the rotor speed of 15RPM～20RPM; The entering water temp of cooling water is controlled at 15 ℃ below-20 ℃; Plastic emitting temperature after mixing is 170 ℃～180 ℃, can allow filler and auxiliary agent under the mechanism of rotor, to mix in advance, and vulcanzing agent adds at last.

8, the production technology of a kind of engine fuel pipe according to claim 7 is characterized in that: described Step 4In the head temperature of straight type head be that 85 ℃, the temperature of spout are 7.3 millimeters of 60 ℃, internal diameter.

9, the production technology of a kind of engine fuel pipe according to claim 8 is characterized in that: described Step 5The middle knitting machine that adopts 9 pins, 3 every centimetre-5 net buttons of pitch.

10, the production technology of a kind of engine fuel pipe according to claim 9 is characterized in that: described Step 6In the head temperature of T type head be that 85 ℃, the temperature of spout are that 60 ℃, the external diameter of outer tube are 13.3 millimeters, described Step 7In cure time be 20 minutes.

The utility model compared with prior art has the following advantages:

1) stable processing technique, banburying operation adopt the banburying equipment of dustless automatic control system, guarantee that small powder in the prescription does not have to fly upward, and operation site does not have dust, helps the healthy of employee.Final products meet the state's laws rules, meet the GS91002-B environmentally friendly machine.

2) the inside and outside footpath dimensionally stable of product, high conformity is with its good airproof performance of assembly after other minutes component installation on the car load, product ne-leakage and obscission.Product percent of pass is high, and manufacturing efficiency is high, and cost is low, and steady quality, can satisfy the usage requirement with global platform BMW 1 Engine Series at reliable performance.

3) vulcanization die adopts two ends to attach the names of pre-determined candidates, and die deformation is little, long service life; Cancel semi-finished product setting-out and cutting action, reduced the two ends stub bar, shortened the manufacture cycle; Cost of labor and cost of material have been reduced; Cost is practiced thrift greatly, and cost has reduced 12%-15%, and has improved manufacturing efficiency and product percent of pass.

4) in product structure design, utilize knitting machine model and knitting pitch to control the aramid line layer, make the bursting pressure height >=8Mpa of product, the person of the attaching power >=4N between interior glue, yarn and the outer glue has guaranteed the bending properties of body, is convenient to install.

Claims (5)

1. engine fuel pipe; Comprise sebific duct body (1); It is characterized in that: described sebific duct body (1) forms the interior pipe (1a) of small aperture; And pipe (1a) is made up of interior pipe rubber layer (111) and middle fibre threads enhancement layer (12) and outer tube rubber layer (13) successively in being somebody's turn to do, or is made up of the fluorine rubber that is positioned at inner circular layer (112a) and the combined type pipe rubber layer (112) and the middle fibre threads enhancement layer (12) and the outer tube rubber layer (13) of the silicone rubber formation that is positioned at outer circular layer (112b).

2. a kind of engine fuel pipe according to claim 1 is characterized in that: described fibre threads enhancement layer (12) be interior pipe rubber layer (111) go up or combined type in pipe rubber layer (112) go up the aramid line layer (121) that weaves.

3. a kind of engine fuel pipe according to claim 1 is characterized in that: interior pipe (1a) the hole internal diameter of described sebific duct body (1) is 7.2 millimeters to 7.4 millimeters.

4. a kind of engine fuel pipe according to claim 1 is characterized in that: the external diameter of described sebific duct body (1) is 13.2 millimeters to 13.4 millimeters.

5. a kind of engine fuel pipe according to claim 1 is characterized in that: described sebific duct body (1) two-port has the Transverse plane (1b) that two ends band hat cone tool sulfuration forms.

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