Valve for the metered admixture of volatilized fuel to the fuel-air mixture of an internal combustion engine
First Claim
1. A valve for the metered admixture of fuel volatilized from the fuel tank of an internal combustion engines to a fuel-air mixture supplied to the engine via an intake manifold, comprising a valve housing having an inflow neck, for connection to a vent neck of a source of fuel vapor, an outflow neck for connection to the intake manifold having a seat valve, disposed in the interior of the valve housing between the inflow and outflow necks, a valve seat surrounding a valve opening and a valve element cooperating with the valve seat, the valve element being actuated by an electromagnet comprising a magnet cup, an exciter coil and an armature, said valve opening being embodied as an annular gap (23) valve element (25) is embodied in the form of an annular disk (26) of magnetically conductive material, which is loaded by a closing force which acts in the closing direction on the seat valve (21) and said disk forms the armature of the electromagnet (13).
1 Assignment
0 Petitions
Accused Products
Abstract
A tank bleeder valve for the metered admixture of volatilized fuel to the fuel-air mixture of an internal combustion engine has a valve housing with inflow and outflow necks, between which an electromagnetically actuatable seat valve is disposed. The inflow neck communicates with the vent neck of a fuel tank, and the outflow neck communicates with the engine intake manifold. To prevent dieseling of the engine after the ignition is switched off, the seat valve is embodied such that it is very tightly closed when there is no current. To this end, the valve opening of the seat valve is embodied as an annular gap, coaxially surrounded on the inside and outside by a valve seat in the form of an annular double seat. The valve element of the seat valve is embodied as an annular disk of magnetically conductive material, which is loaded with a closing force acting in the closing direction of the seat valve. The annular disk simultaneously acts as the armature of the electromagnet.
52 Citations
24 Claims
- 1. A valve for the metered admixture of fuel volatilized from the fuel tank of an internal combustion engines to a fuel-air mixture supplied to the engine via an intake manifold, comprising a valve housing having an inflow neck, for connection to a vent neck of a source of fuel vapor, an outflow neck for connection to the intake manifold having a seat valve, disposed in the interior of the valve housing between the inflow and outflow necks, a valve seat surrounding a valve opening and a valve element cooperating with the valve seat, the valve element being actuated by an electromagnet comprising a magnet cup, an exciter coil and an armature, said valve opening being embodied as an annular gap (23) valve element (25) is embodied in the form of an annular disk (26) of magnetically conductive material, which is loaded by a closing force which acts in the closing direction on the seat valve (21) and said disk forms the armature of the electromagnet (13).
Specification