Eaton Corporation

John A Ness

Carl G Gluf, Jr

Robert Andrew Dayton

Kynan L Church

Kenneth J Parker

Larry P Bennett

Andrew W Westergaard

Roger L Kennedy, Jr

A valve deactivation assembly ( ) comprises part of the valve gear train for an internal combustion engine, and is disposed in a bore ( ) defined by the A engine block ( B). The assembly ( ) includes a latching mechanism ( ) shiftable, in response to control fluid pressure, between latched and unlatched conditions. The assembly ( ) includes an outer body member ( ), having an outer cylindrical surface ( S), reciprocable within said the bore ( ), the outer body member including a lower terminal portion ( L). The outer body member defines an annular sealing groove ( ) which remains aligned within the bore ( ), between the lower terminal portion ( L) and a passage ( ) communicating control fluid pressure the latching mechanism ( ), as the outer body member reciprocates. There is also a fluid passage ( ) disposed to communicate a source ( ) of low pressure to the annular groove ( ), to thereby form a barrier to block the migration of air to the control pressure passage ( ).

Pressurized sealing groove for deactivating roller-follower

A solenoid operated exhaust bleed type pressure control valve assembly providing a proportional pressure control signal over the full range of solenoid operating current. A poppet valve member is connected to the solenoid armature and closes against a valve seat in the control signal port pressure chamber to prevent flow through the valve seat to the exhaust (bleed) ports. This results in very low or reduced leakage at minimum pressures. The poppet valve contacts a projection on a spool valve for effecting concurrent movement therewith for valving a supply pressure port in the control signal pressure chamber. In the normally closed version of the valve assembly, the poppet delays the spool opening of the inlet or supply port until solenoid current has reached about Five to Twenty Percent (5-20%) of maximum. In the normally open version, the spool is delayed in closing the supply inlet port until solenoid current reaches about Eighty to One Hundred Percent (80-100%) of maximum.

Solenoid operated valve assembly for variable bleed pressure proportional control

An improved regulator valve for controlling the purging of fuel vapors collected in a canister and an evaporative emission control system into an intake system of an internal combustion engine employs a solenoid valve assembly with an armature disposed outside of the coil to operate with low friction. A spring separating the armature from the valve member allows the spring to absorb most of the magnetic and gravitational side loading.

Proportional solenoid for purging fuel vapors

A valve assembly having solenoid valves mounted on a manifold or block for, upon energization, controlling flow in selected passages. A bus frame of overmolded bus strips has portions of the strips exposed for connection directly to the solenoids. A pressure switch capsule is received in a ported cavity in the manifold or block and located such that a snap disk on the pressure switch contacts exposed surfaces of end portions of two of the bus strips for completing a circuit responsive to sensed pressure in the block cavity.

Overmolded frame bus with integral pressure switch

A variable force solenoid operated pressure control valve of the type having a force balanced spool moveably controlled energization of the solenoid for modulating the discharge pressure of the valve at its control outlet when the valve is supplied at its inlet with fluid of a supply pressure. The spool is moved to bleed fluid through an exhaust port to a sump for controlling the pressure supplied to the control outlet. The spool has a dashpot and piston in one end for providing hydraulic dampening of spool oscillations. In one embodiment a cylindrical piston is used and in an alternate arrangement a ball is employed in the dashpot.

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Birmingham, MI, United States of America

John A Ness