Abstract:
PROBLEM TO BE SOLVED: To provide a solenoid driving valve capable of smoothly reciprocating a driving valve. SOLUTION: This solenoid driving valve 10 is provided with a stem 12 extended in the predetermined direction, the driving valve 14 provided at a tip of the stem 12 and having an umbrella part 13 for opening/closing an air intake/discharge opening, a lower disk 20 and an upper disk 30 respectively having one end 22 and 32 connected to the stem 12 and the other ends 23 and 33 supported by a disk support base 51 freely to swing and for reciprocating the driving valve 14 in the predetermined direction by swinging around the other ends 23 and 33 thereof, a lash adjuster 16 provided in the stem 12, and a guide ring 45 for guiding the lash adjuster 16 along the predetermined direction. The lash adjuster 16 is extended/shrunken in the predetermined direction, and while absorbs displacement of the stem 12 generated in a direction crossing the predetermined direction with reciprocation of the driving valve 14. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The invention relates to an improved system of electro-mechanical hydraulic valve lifters for piston engine automobiles that increases fuel economy and reduces fuel emissions. The electro-mechanical hydraulic valve lifters contain that enclose a magnetorheological fluid chamber, containing magnetorheological fluid. A control module manages voltage sent to the magnetorheological fluid in the magnetorheological fluid chamber. The control module introduces various amounts of magnetic flux to the magnetorheological fluid in the magnetorheological fluid chamber. The magnetorheological fluid's viscosity changes based on the amount of magnetic flux applied to it from the electromagnets and, along with the magnetorheological fluid chamber spring, controls how much an intake and exhaust port of the spark plug engine opens to control the amount of fuel used and exhaust let out of the engine.
Abstract:
The invention relates to a hydraulic support element for valve drive of a combustion engine, with a pot cylindrical casing and a hollow cylindrical piston guided axially movably therein, the inner end of which is supported via a spring on the bottom wall of the casing, whose outer end projects past the outer margin of the casing and is formed as a hemispherical bearing head, and whose inner space is subdivided by means of a partition element into an axially inner supply-pressure space and an axially outer switching-pressure space.
Abstract:
An electromagnetically driven valve includes a driven valve having a stem extending in a prescribed direction and an umbrella-shaped portion provided at a tip end of the stem and opening/closing an intake/exhaust port, a lower disc and an upper disc having one ends coupled to the stem and the other ends supported by a disc support base so as to allow free oscillation of the disc respectively and oscillating around the other ends so as to cause the driven valve to carry out reciprocating motion in the prescribed direction, a lash adjuster provided in the stem, and a guide ring guiding the lash adjuster along the prescribed direction. The lash adjuster contracts and expands in the prescribed direction and accommodates displacement of the stem produced in a direction orthogonal to the prescribed direction as a result of reciprocating motion of the driven valve. With such a structure, the driven valve carries out smooth reciprocating motion.
Abstract:
A hydraulic lash adjuster of the type in which the plunger assembly (15) includes a ball plunger element (50), and defines a valve opening (57) in the lower plunger member (19). A check valve member (53) is seated in the valve opening (57), for opening the valve opening in response to a relative decrease in the pressure in a high pressure chamber (23). The ball plunger element (50) includes a metering valve element (45) movable between an outward position (FIG. 1) and an inward position (FIG. 2). An elongated member (65) is fixed to move with the metering element (45), and includes a lower end (67) juxtaposed the valve opening (57). When the metering element (45) is in its inward position, the lower end (67) engages the check ball (53) and lifts it from the valve opening, thus facilitating assembly of the lash adjuster, filled with fluid, into an engine.
Abstract:
A sealed-type lash adjuster includes a cylindrical body; a plunger received in the body and forming a chamber with the bottom of the body; and a diaphragm mounted between an open end of the body and the plunger, and forming a reservoir for hydraulic oil to be supplied to the chamber. The adjuster also includes a holder having a bushing for receiving the body with the bottom of the body engageable with a valve rocker, and the diaphragm and the open end of the body generally facing away from the combustion chamber, a reservoir for storing fluid lubricant, and a conduit for conducting fluid lubricant from the reservoir to an interior annular channel in the bushing. At least part of the thickness of the diaphragm is formed of a fluorine-bonded layer extending over the entirety of the diaphragm.
Abstract:
A self-contained hydraulic lash adjuster in which a bag member is disposed in a reservoir chamber formed within a plunger. An open upper end portion of the bag member is fixedly mounted with a metal ring therein so as to be fixed to an upper end portion of the reservoir chamber in spite of successive deformation of the bag member in accordance with oil-volume variation in the reservoir chamber.
Abstract:
A hydraulic oil for a sealed-type lash adjuster is engine oil based, comprising mineral oil as a principal component, and 3% or less by weight of an additive which includes at least one of an anti-oxidant, a detergent-dispersant, a rust preventative, and an anti-foaming agent.
Abstract:
An hydraulic cup-shaped valve tappet for internal combustion engines with overhead camshaft comprising an outer hollow cylindrical housing (7) closed at one end by a bottom (3) in which is provided, concentrically radially spaced, a guide tube starting from the bottom, and in which is supported a longitudinally moveble plunger (5) of an hydraulic clearance compensation element, against the face thereof the end of a valve stem is abutting, a control cam (4) abutting against the bottom of the housing, characterized in that in the circular space between the cylindrical internal surface of the housing (7) and the external surface of the guide tube (8) a bellow element (16,21,25,31) is provided, said element being tightly connected, on the one hand, with the internal surface of the housing (7) and, on the other hand, with an end of the plunger (5) projecting from the guide tube which is capable to simultaneously take up variations in length and in volume and which together with the remaining tappet components define an oil-filled internal space completely closed outwardly.