RU5211U1 - DEVICE FOR ADJUSTING THE GAS DISTRIBUTION PHASES - Google Patents

Abstract

A device for adjusting the valve timing, consisting of a housing, a sleeve and a spring-loaded stem, characterized in that the drainage hole is additionally made in the rod, and a washer is mounted on the ledge of the sleeve with the possibility of axial movement and overlapping of this hole.

Description

M K I F 01 L 1/24

DEVICE FOR ADJUSTING THE GASOR PHASES (DRILLING.

This field-based model relates to the field of engine building and can be used on four-stroke internal combustion engines (ICE), in particular, on VAZ all-wheel drive engines - SlOi ... 07.

In addition, the device (AJD. 1574845, NlKIl F Q1 L 1/24, BI 24.1990), which has two oil chambers and allows changing the phases of the gas distribution gas (FGR) due to the flow of the Mazzle from one chamber to another.

The known design is distinguished by the complexity of manufacture and a wide range of adjustment of the FRG.

Sheyutoya t-same devices (AS 1634809 .. MSh F01 L1 / 34, BI 10.1991g.) Combining of several cams of various shapes, which allows you to change the FRG stepwise, with increasing speed of the crankshaft engine, due to the alternate actions of these fists.

The disadvantages of such constructions are their large metal consumption, manufacturing complexity, stepwise adjustment of the FRG, the presence of a thermal gap in the gas distribution mechanism (GRM) and the increased wear and noise of the engine associated with it.

A known mechanism for adjusting the FGR (A.S. 16S9574, MKI P 01, L 1/34, BI 7.1991), in which the beam consists of two halves, expandable by a piston under oil pressure, which leads to an earlier valve opening and is changed ) FGR.

This device requires particular manufacturing accuracy, and the clearance-free operation of the hb66 valve is also violated. engine and how. as a result, noise and wear increase. Closest to the claimed: / technical solution. Is a hydraulic gap compensator (Russian patent EOS317E, P 01, L 1 / J4, BI 21.1994). distance from the body, the spring-loaded stem and the valve with a brake rubber ring, forming

areas of high and low pressure. The inverse device does not have the ability to regulate the FRG.

The task is to create a device capable of combining the advantage of a hydrocompensator of vazors, i.e. shock-free operation of the valve mechanism, and providing smooth adjustment of the FRG.

This problem is solved due to the fact that in the device for adjusting the gas distribution phases, comprising a housing, a sleeve and a spring-loaded rod, according to a utility model, a drain hole is additionally made in the rod, and a washer is installed on the ledge of the sleeve with the possibility of axial movement and overlapping of this hole.

This device is shown in FIG. one.

The device for adjusting the FRG consists of a sleeve 1, which is installed in the motor housing. Through an elastic sealing gasket 3, the housing 4 of the device for adjusting the FRG is pressed against the engine housing 2 by transmitting force from the sleeve 1 through the sealing ring 5 and the retaining plate 6 Inside the sleeve 1 is a rod 7, which has the possibility of axial movement under the action of the spring 8.. The spring 8, in turn, compresses the cup 9 with the spring 10 and the locking ball 11 to the drainage hole inside the rod 7.

Elastic tube IS folded in half relative to the retaining ring. 13 protects the necessary quantity of oil inside the sleeve 1 for the operation of the device. The circlip 13 holds the calibrated spring 14, which controls the amount of lift of the movable washer 15. The elastic ring 16 is used to seal the mates of the sleeve 1 and the movable washer 15. A package of adjusting washers 17 is necessary only for the correction of technological tolerances during assembly. All cavities of the device are filled with oil. .

The operation of the device for adjusting the FGR is based on a change in the oil pressure in the engine lubrication system, from 0.5 atm. when starting the engine, up to 3 ... 4 atm. at maximum engine crankshaft revolutions of 5000 rpm and above). The oil pressure is supplied from the camshaft lubrication system through tubes (not shown in the figure) and off - 3. . a hole in the housing of the device 4. Further, through the holes in the sleeve 1, the maolo is fed into the vazor between the movable sh-ayba 15 and the ledge of the sleeve 1. The force arising from this through the movable washer 15 is transmitted to the calibrated spring 14, compressing it in proportion to the pressure of the meola, and moves the screw up the washer 15. With its upper edge, the washer 15 overlaps the additional drain hole of the oil outlet in the rod 7, through which the oil exits when the rod 7 moves down. When the rod 7 moves upward, under the action of the spring 8, a vacuum is created in the internal volume of the rod 7 (high-pressure chamber). As a result, the locking ball 11 moves away from the main drainage hole, and the oil begins to flow into the inner cavity of the rod 7 and the volume located further by the walls of the sleeve 1 and the electric pipe IE above the movable washer 15, through the through holes in the rod 7. Oil in this the volume enters from the internal high-pressure cavity of the rod 7, due to spatter during operation of the valve mechanism of the engine and seeps through the gaps between the movable washer 15 and the rod 7, the sleeve 1 and the elastic ring 16. The elastic tube IE supports the necessary Diminish oil level when tilting and tilting the vehicle. When the engine is stopped for a long time, the rod 7 sits on the bottom of the sleeve 1 under the action of the return springs K ia of the timing belt (not shown), if the corresponding camshaft cam keeps the timing valve open. Due to this, the return springs of the timing belt kshapan are immersed somewhat, their shrinkage decreases, and the resource increases. The movable washer 15 also lies on the ledge of the sleeve 1 or the package of adjusting tubes 17 under the action of a calibrated spring 14. .. When the engine starts, when the timing valves begin to make reciprocating movements, the spring S constantly pins the rod 7 to the timing rocker (not shown in the ryonka ) thereby provides bezvazorny operation of the valve mechanism. And the landing of the rod 7 is already only before the overlap of the additional drainage hole for the release of the yaola with the movable flange 15, while amortizing the impact.

The oil in the engine idle is sufficient only for partial or half-load unloading of the calibrated spring force 14 on the movable washer 15. In this case, the stroke length of the rod 7 is 1, .. 1,5 л plus thermal gap (about 0, 4mm.) - As a result, the timing valve code decreases (based on the ratio in the arms of the timing rocker division point of contact with the camshaft cam) by (7 0.7 .. L mm. J thereby narrowing the valve timing. use a camshaft with a wide-phase phase without shreds of either tsatricno consequences on the economy and engine cleanliness.

With an increase in the engine speed, the oil pressure in the engine lubrication system is radstet, and the movable washer 15, overcoming the resistance of the calibrated spring 14, rises. Thus, reducing the drowning of the rod 7 and increasing the stroke of the timing valve to the maximum possible. Thus, the phases of the gas distribution expand smoothly, according to the optimal requirements, the purge of the engine cylinders is improved, its dexterity and torque are increased. In some modes, a reduction in specific fuel consumption is possible.

Before the engine warms up, an additional thermal gap, the pelvis “e” plays a positive role in a narrower 11th phase impairs the purge of the cylinders with a fresh air-fuel mixture and at the same time prevents the rapid release of exhaust gases. All this accelerates the engine warming up to operating temperature, the specific fuel consumption and the amount of toxic gases in the exhaust are reduced by increasing the residual gases in the mixture and reducing the leakage of fresh fuel-air mixture into the exhaust pipe. The system of the valve mechanism of the FRG with a device for adjusting the FRG becomes self-regulating with positive responsiveness, duplicating the actions of the air and throttle shutters of the system of mixtures of enium.

Significantly reduced wear of valve parts due to non-clearance. and shock-free operation, the presence of a thermal gap eliminates the clamping of the valve after warming up the engine.

A single adjustment of the clearances (when the device is mounted on the engine) with the help of shims 1 is sufficient to ensure uninterrupted operation of the engine before its overhaul.

Claims (1)

A device for adjusting the valve timing, consisting of a housing, a sleeve and a spring-loaded stem, characterized in that the drainage hole is additionally made in the rod, and a washer is mounted on the ledge of the sleeve with the possibility of axial movement and overlapping of this hole.