RU211497U1 - Canister purge valve - Google Patents

Abstract

The utility model relates to the devices of the system for capturing and further using gasoline vapors, namely, to the adsorber purge valves. The technical result consists in increasing the service life of the valve by increasing the wear resistance of moving elements and its unification by using a coil block with various valve bodies adapted to the specific requirements of the consumer in terms of connecting dimensions. SUBSTANCE: adsorber purge valve contains a body and a coil unit, consisting of an induction coil, a coil frame, a core, a spring, a diaphragm located perpendicular to the core, a bracket, the core being fixed on the bracket by means of a threaded connection, the bracket is fixed on the coil frame using a latch that has cavity surrounding the base of the core.

Description

The utility model relates to the devices of the system for capturing and further using gasoline vapors, namely, to the adsorber purge valves.

To capture gasoline vapors in internal combustion engines, in order to prevent their leakage into the atmosphere, special adsorber-based systems are used. During operation, gasoline vapors are removed from the adsorber and burned inside the engine, while the volume of gasoline vapors blown is adjusted by the adsorber purge valve (hereinafter referred to as the valve).

A purge valve device for an adsorber is known (US patent No. 6830232 dated 20.04.2001, IPC F02M 25/08), containing a housing with two fittings: inlet and outlet of gaseous vapors of gasoline, connected by pipelines to the adsorber and the exhaust system of the internal combustion engine. Inside the housing there is an electric solenoid, a movable plunger, with the help of which the opening and closing of the passage section of one of the fittings, controlled by the central processor of the vehicle, is located.

The disadvantage of this device is the rapid wear of the moving elements of the valve due to high impact loads caused by a small area of contact between the plunger and the impacting surface, which leads to an increase in the flow rate of gasoline vapor through the valve in excess of allowable values.

The task to be solved by the claimed utility model is to increase the service life of the valve by increasing the wear resistance of moving elements.

The technical result consists in increasing the service life of the valve by increasing the wear resistance of moving elements.

The specified technical result is achieved due to the fact that the adsorber purge valve includes a body and a coil unit consisting of an induction coil, a coil frame, a core, a spring, a diaphragm located perpendicular to the core, a bracket, and the core is fixed to the bracket by means of a threaded connection.

In FIG. 1 shows the canister purge valve, where

1 - Valve body cover.

2 - Valve body.

3 - First sealing ring.

4 - Second sealing ring.

5 - Coil block.

In FIG. 2 shows the coil unit, where

6 - Induction coil.

7 - Retainer.

8 - Adapter.

9 - Core.

10 - Bracket.

11 - Diaphragm.

12 - Spring.

13 - Cushioning ring.

14 - Cushioning rubber elements.

15 - Coil frame.

16 - Cavity for pouring glue.

17 - Contacts.

In FIG. 3 shows section A-A in FIG. 2.

The adsorber purge valve consists of a housing 2, a housing cover 1, inside of which there is a coil unit 5. To prevent possible leakage of gasoline vapors, the first sealing ring 3 and the second sealing ring 4 are located at the contact point of the coil unit and the housing. The coil unit consists of an induction coil 6 wound on the frame of the coil 16, inside which is the core 9 of the diaphragm 11, located perpendicular to the core 9 and made of a ferromagnetic material. To minimize the consequences of shocks caused by the operation of the valve, shock-absorbing rubber elements 14 are located on both sides of the diaphragm 11. To dampen vibration when pumping a large volume of air, the core 9 is equipped with a shock-absorbing ring 13. Using the spring 12, the diaphragm 11 fits snugly against the adapter 8. To adjust the volume of the blown air by changing the gap between the diaphragm 11 and the core 9, a bracket 10 is provided in the coil unit 5, in which the core 9 is connected using a threaded connection. The gap is adjusted by rotating the core 9 inside the bracket 10. To minimize vibration, the bracket 10 is pressed tightly against the coil frame 16 using latch 7. If it is necessary to firmly fix the core 9, at the base of latch 7 there is a cavity for pouring fixing glue 15. The valve is powered and controlled through electrical connector 17.

To activate the valve, a pulse control signal is supplied from the electronic control unit of the car, under the action of which a magnetic field arises in the induction coil 6. Diaphragm 11 under the action of a magnetic field is attracted to the core of the induction coil 9, opening the valve passage. In this case, the air flow can freely pass through the valve, purging the adsorber. When the magnetic field disappears, the spring 12 presses the diaphragm to its initial position, closing the valve passage, thereby preventing gasoline vapors from escaping into the atmosphere.

Thus, the proposed adsorber purge valve has higher wear resistance of moving elements.

Claims (3)

1. An adsorber purge valve containing a body and a coil unit consisting of an induction coil, a coil frame, a core, a spring, characterized in that the coil unit contains a diaphragm located perpendicular to the core, a bracket, and the core is fixed to the bracket by means of a threaded connection. 2. Canister purge valve according to claim 1, characterized in that the bracket is fixed on the coil frame with a retainer. 3. Canister purge valve according to claim 2, characterized in that the latch has a cavity surrounding the base of the core.

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