CN201265466Y

CN201265466Y - Fuel loop pressure reducer of motor vehicle engine

Info

Publication number: CN201265466Y
Application number: CNU2008201356545U
Authority: CN
Inventors: 张卫东; 侯卢献
Original assignee: China Molybdenum Co Ltd
Current assignee: China Molybdenum Co Ltd
Priority date: 2008-10-06
Filing date: 2008-10-06
Publication date: 2009-07-01
Anticipated expiration: 2018-10-06

Abstract

The utility model belongs to the technology of vehicle engine oil feed and return. A vehicle engine oil fuel return pressure reducer (2) provided by the utility model is arranged between an engine main oil tank (1) and a filter (3), and the horizontal position of the pressure reducer is lower than that of the main oil tank; an oil inlet (1) of the upper end of the pressure reducer (2) is communicated with an oil outlet of the main oil tank, and a float type check valve is arranged at the oil inlet (7) of the pressure reducer; an oil outlet (11) of the lower end of the pressure reducer (2) is connected with an oil inlet of the filter, and an oil return port (8) of the upper end of the pressure reducer (2) is connected with an oil return port of an oil fuel pump. The vehicle engine oil fuel return pressure reducer provided by the utility model effectively solves the problem of high back pressure of the oil fuel oil return, thereby enabling the idle speed of the vehicle engine to achieve the rated standard, reduce the failure ratio of a gearbox and reduce the oil consumption of the vehicle.

Description

Motor car engine fuel circuit decompressor

Technical field

The utility model belongs to motor car engine for the oil return technology, mainly proposes a kind of motor car engine fuel circuit decompressor.

Background technique

The data minimum speed of existing its engine design of heavy duty vehicle is 700r/min, but the actual moving process medium speed is 900～1000r/min, has increased fuel consume virtually, and causes vehicle can't normally carry out when gear shift operation.Rotating speed raises, because inertial force, power can not cut off rapidly clutch when cutting off engine power, can't finish smoothly during gear shift under steam when vehicle, causes gearbox gear seriously to make sound, and greatly reduces the working life of gearbox.

Summary of the invention

The purpose that the utility model proposes a kind of motor car engine fuel circuit decompressor promptly is to solve existing existing the problems referred to above of heavy truck motor by the engine fuel loop is improved.

The utility model is finished the technological scheme that its invention task taked: described decompressor is arranged between motor main fuel tank and the filter cleaner and makes the decompressor horizontal position be lower than main fuel tank, decompressor upper end filler opening and main fuel tank be fuel-displaced to be communicated with and to be provided with the float-ball type stop valve at filler opening, and the lower end oil outlet of decompressor links to each other with the filter cleaner filler opening and return opening on the decompressor is linked to each other with the fuel pump return opening.

The utility model fuel tank is as Fuel Tanking Unit, fuel oil flows into decompressor by oil pipe, when pasta rises to designing requirement, the float-ball type stop valve is closed filler opening, stop valve was opened fuel oil and is replenished into decompressor when pasta descended in the decompressor, and guaranteeing has enough fuel oils to use for motor in the decompressor.Fuel oil in the decompressor enters filter cleaner by the oil outlet of bottom, and oil return is got back in the decompressor from fuel pump at last, realizes closed circulation of oil circuit.

The engine fuel loop decompressor that the utility model proposes efficiently solves the high problem of fuel circuit back pressure, makes the engine idle of vehicle reach specified standards, has reduced the rate of fault of gearbox and the vehicle fuel consume is reduced.

Description of drawings

Fig. 1 is the utility model user mode schematic representation.

Fig. 2 is the utility model structural representation.

Among the figure, 1, main fuel tank, 2, decompressor, 3, filter cleaner, 4, motor, 5, fuel pump, 6, steel ball, 7, the decompressor filler opening, 8, the decompressor return opening, 9, connecting tube, 10, ball float, 11, the decompressor oil outlet, 12, floating ball lever.

Embodiment

The embodiment who provides in conjunction with the accompanying drawings is illustrated the utility model:

As shown in Figure 1 and with reference to Fig. 2, the decompressor 2 that the utility model proposes is arranged between motor main fuel tank 1 and the filter cleaner 3 and makes the decompressor horizontal position be lower than main fuel tank, decompressor upper end filler opening 7 and main fuel tank be fuel-displaced to be communicated with and to be provided with the float-ball type stop valve at filler opening, and the lower end oil outlet 11 of decompressor links to each other with the filter cleaner filler opening and return opening 8 on the decompressor is linked to each other with the fuel pump return opening.

As shown in Figure 2, the set float-ball type stop valve of decompressor filler opening mainly is made of ball float 10, floating ball lever 12 and steel ball 6, and it is the mature structure of present widespread usage, does not do too much explanation at this.

Claims

1, a kind of motor car engine fuel circuit decompressor, it is characterized in that: described decompressor (2) is arranged between motor main fuel tank (1) and the filter cleaner (3) and makes the decompressor horizontal position be lower than main fuel tank, decompressor (2) upper end filler opening (7) and main fuel tank be fuel-displaced to be communicated with and to be provided with the float-ball type stop valve at its filler opening (7), and the lower end oil outlet (11) of decompressor (2) links to each other with the filter cleaner filler opening and return opening (8) on the decompressor (2) is linked to each other with the fuel pump return opening.