RU2241849C2 - Automobile fuel-feed module - Google Patents

Abstract

FIELD: mechanical engineering; engine.

SUBSTANCE: invention relates to supply systems of internal combustion engines. Proposed fuel-feed module designed for use in supply system of automobile internal combustion engine contains support framework, electric fuel pump, filter, fuel level transmitter with float and intake chamber. Support framework consists of cover with posts press-fitted into cover and getting into channels of bracket flanges. Cover has fuel-feed union, return fuel union and connector socket to supply electric power to fuel pump. Fuel pulsar tube connects fuel-feed union on cover with outlet union of electric fuel pump. Electric fuel pump is secured in bracket by clamp enclosing projecting part of electric fuel pump between electric supply connected socket and output union by means of lips-latches. Post connected with return union plays part of fuel return pipeline. Intake chamber is made in form of bowl whose wall encloses support framework of electric fuel pump, and bottom has at least two cylindrical members used to take in bracket flanges.

EFFECT: simplified design and manufacture of fuel-feed module, improved operation reliability of module.

3 cl, 6 dwg

Description

The invention relates to an electric drive gas pump module in a power system of an internal combustion engine of a vehicle.

The prior art fuel supply module, designed to supply two types of fuel.

A variant of the fuel supply module, which is used in tanks with gasoline fuel and is designed to supply fuel from the fuel tank to the gasoline engine of a car, is adopted as a prototype (1).

This fuel supply module includes a support frame consisting of a top cover for locking the neck in the upper wall of the fuel tank, the first cover being provided with a fuel supply pipe and a return fuel pipe, and a second support cover mounted on the bottom of the fuel tank, which includes a tubular chamber with fuel pump. The fuel supply pipe is connected through a hose to the outlet pipe of the electric fuel pump. The module also has a filter that provides filtering of the fuel pumped by the pump, a fuel level sensor with a float.

For this module design, a special fuel tank with a recess in the bottom is required.

The mounting of the tubular chamber with the electric gas pump to the second support cover is carried out by a large number of fastening means that do not provide for fixing the electric gas pump itself in the tubular chamber from vertical displacement, which is unavoidable during operation of the pump.

As a result of the analysis of the prior art, conducted on patent and scientific and technical sources of information containing information about analogues of the proposed invention, no analogue was identified, characterized by signs identical to all the essential features of the proposed solution.

The results of the analysis provide a basis for concluding that the proposed solution meets the criterion of “novelty”.

The objective of the invention is to simplify the design and manufacturing technology of the fuel supply module and, as a result, increase the operational reliability of the module.

This is achieved by the fact that the fuel supply module for the car contains a support frame, an electric gasoline pump, a filter, a fuel level sensor with a float, an intake chamber; the supporting frame consists of a cover with racks pressed into the cover and entering the channels of the bracket flanges; the cover has a fuel supply fitting, a returnable fuel fitting and a socket for supplying power to the gasoline pump; a fuel pulsator tube connects the fuel supply fitting on the lid to the outlet nozzle of the gasoline pump, and the gasoline pump in the bracket is secured with a clamp covering the protruding part of the gasoline pump between the power supply block and the outlet fitting, using mustache latches; the rack associated with the return fitting performs the function of a return pipe for fuel; the intake chamber has the form of a bowl, the wall of which covers the supporting frame of the electric gas pump, and the bottom has at least two cylindrical elements used to receive the bracket flanges, the clamp is a curved tape of elastic material with truncated side faces, and the rubber caps are closed by the bottom of the cylindrical elements.

Achieving a higher technical result when using new features of the proposed technical solution allows us to conclude that the claimed solution meets the requirement of "inventive step".

The invention is illustrated in figures 1, 2, 3, 4, 5, 6.

Figure 1 presents a General view of the inventive module;

figure 2 presents the supporting frame of the module, consisting of a cover with racks and an arm;

figure 3 presents the bracket with a gasoline pump without a cover;

figure 4 presents a view of the clamp in isometry;

figure 5 presents the supporting frame of the module with a gasoline pump;

figure 6 presents a view of the intake chamber in isometry.

The fuel supply module contains a support frame (figure 2), consisting of a cover 1, which covers the neck of the fuel tank (not shown in Fig.) With struts 2, pressed into the cover 1 and freely entering the channels 3 of the flanges 4 of the bracket 5, the lower flanges 4a have an elongated cylindrical shape and perform the function of legs. One of the legs has a cutout 4b, which serves to drain the fuel. One of the struts 2 has a cylindrical spring 6 located between the cover 1 and the flange 4 of the bracket 5, which ensures the selection of the height of the fuel supply module for the height of the fuel tank, as well as independence from the expansion-compression forces arising in the fuel tank during operation of the gasoline pump. The clip 7 prevents the racks 2 from leaving the channels 3 of the flanges 4 of the bracket 5.

The cover 1 has a fuel supply nozzle 8, a returnable fuel nozzle 9 and a socket 10 for supplying power to the fuel pump.

One of the posts 2, connected with the return fitting 9, performs the function of the return fuel pipe and enters the channel 3 of the flange 4a, having a cutout 4b, which serves to drain the fuel into the tank.

The bracket 5 has a rectangular pad 11 with mounting holes 12 for mounting the fuel level sensor with a lever and a float (not shown in FIG. 2) and tides 13 with slots 14.

Inside the bracket 5 there is an electric gas pump 15 (Fig. 3), preferably a centrifugal type, which delivers fuel to the engine and at the same time maintains the desired pressure, which ensures efficient injection of fuel into the engine under various operating conditions. The gasoline pump 15 is surrounded by a rubber casing 16, which solves the problem of noise isolation and vibration protection of the working pump. From vertical movement, the gasoline pump 15 in the bracket 5 is fixed with a clamp 17.

The clamp 17 (Figs. 1, 3, 4, 5) is a curved tape of elastic material with truncated side faces 17a, which covers the protruding part of the gasoline pump 15 between the power supply block 18 and the outlet fitting 19 of the electric gasoline pump 15. With the furnaces 20, the clamp 17 rests on the upper the end part 21 of the bracket 5 and the vertical parts 22 is included in the slots 14 of the tides 13.

The mustache-latches 23 on the vertical parts 22 of the clamp 17 abut against the lower surface of the horizontal part 24 of the tides 13 and hold the clamp 17 in position. Due to the elastic properties of the material, the shoulders 20 of the clamp 17 can be raised during operation of the electric gas pump 15.

The tube of the pulsator of the fuel 25 (1, 5) hermetically connects the outlet fitting 19 of the gasoline pump 15 with the fuel supply fitting 8 on the cover 1.

The wiring harness (not shown in FIGS. 1, 4) provides power to the power block 18 of the gasoline pump 15 through the plug 10 on the cover 1.

The petrol pump module 15 has a filter 26 (Fig. 5), which is connected through the inlet pipe (not shown in Figs. 1, 4) of the petrol pump 15.

The gasoline pump module 15 has an intake chamber 27 (Fig.6), made mainly of plastic by casting, which ensures constant fuel supply when the car is moving in a bend.

The intake chamber 27 has the form of a bowl with a wall 28 covering the support frame of the electric gas pump 15, and part of the wall 29 is concave under the rocker arm of the float of the fuel level sensor (not shown in Fig. 1).

The bottom 30 of the intake chamber 27 has a through hole (not shown in FIG. 6) for free flow of fuel from the fuel tank to the intake chamber 27 and vice versa, two cylindrical elements 31 for receiving the lower flanges 4a of the bracket 5 and the groove 32 formed by the inner part of the wall 28 the intake chamber 27 and the additional wall 33, abutting at one end to the concave part of the wall 29 of the intake chamber 27.

The bottom of the cylindrical elements 31 is closed by rubber plugs 34, which are included in the flanges 4a of the casing 5, and on the other side they go to the outside of the bottom 30 of the intake chamber 27 and serve as support legs of the intake chamber and the entire electric fuel pump module 15, while simultaneously damping the vibration of the module during operation petrol pump 15.

The fuel supply module is assembled as follows:

An electric gas pump 15 is installed in the bracket 5 through the rubber casing 16. From excessive vertical movement, the electric gas pump 15 is fixed in the bracket 5 with a clamp 17. They provide a connection to the fuel supply nozzle 8 on the cover 1 with the outlet connection 19 of the electric gas pump 15 through the fuel pulsator tube 25 and plug 10 on the cover 1 sec the power supply 18 through the wiring harness (not shown in FIGS. 1, 4).

A spring 6 is put on one of the posts 2, the posts 2 are inserted into the flanges 4 and 4a of the bracket 5 and fixed with a clip 7.

The filter 26 is connected to the inlet pipe (not shown in figures 1, 4) of the gasoline pump 15

In the cylindrical elements 31 of the intake chamber 27, rubber plugs 34 are installed and the lower flanges 4a of the bracket 5 are inserted.

On the lining 11 of the bracket 5 through the mounting holes 12 fasten the fuel level sensor with a lever and a float (not shown in figure 2).

The use of the inventive fuel supply module for a car allows you to obtain a significant technical effect expressed in increasing the operational reliability of the module, which allows us to talk about the compliance of the proposed solutions to the criterion of "industrial applicability".

Sources of information:

1. US patent No. 6149399, MPK ⁷ : F 04 B 4 9/00, publ. 11.21.2000 (prototype).

Claims (3)

1. The fuel supply module, intended for use in the power supply system of an internal combustion engine of a vehicle, comprises a support frame, an electric gasoline pump, a filter, a fuel level sensor with a float, an intake chamber; the supporting frame consists of a cover with racks pressed into the cover and entering the channels of the bracket flanges; the cover has a fuel supply fitting, a returnable fuel fitting and a socket for supplying power to the gasoline pump; a fuel pulsator tube connects the fuel supply fitting on the lid to the outlet nozzle of the gasoline pump, characterized in that the gasoline pump in the bracket is secured with a clamp covering the protruding portion of the gasoline pump between the power supply block and the outlet fitting with the help of mustache latches; the rack associated with the return fitting performs the function of a return pipe for fuel; the intake chamber has the form of a bowl, the wall of which covers the supporting frame of the electric pump, and the bottom has at least two cylindrical elements used to receive the bracket flanges. 2. The fuel supply module for a car according to claim 1, characterized in that the clamp is a curved tape of elastic material with truncated side faces. 3. The fuel supply module for a car according to claim 1 or 2, characterized in that the bottom of the cylindrical elements is closed with rubber plugs.

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