Abstract: An atomizer for atomizing liquid, having a disc clamped between two plate members, the disc being provided with a plurality of radial slits which, in combination with the flat surfaces of peripheral regions of the plate members, constitute liquid atomizing nozzle ports having a tetragonal cross-section. This arrangement permits an easy formation of a plurality of nozzle ports and remarkably suppresses the tendency of clogging of the nozzle ports by foreign matter. In addition, it is possible to form precisely fine nozzle ports of a diameter which could never be attained by the conventional process. The tetragonal cross-section of the nozzle ports provide peculiar jetting characteristics for attaining good atomization of the liquid.

Abstract: A valve actuating device for an internal combustion engine having a cam and a valve stem comprises a rocker arm receiving a load from the cam at one end and actuating the valve stem at the other end thereof, a hydraulic valve lifter slidably disposed in the rocker arm, a hollow rocker arm shaft pivotally supporting the rocker arm, a first fluid supply passage formed in the rocker arm shaft, a second fluid supply passage formed in the rocker arm, and an air hole formed in an upper portion of the hollow rocker arm shaft.

Abstract: The hydraulic lifter system for variable cylinder engines comprises a hydraulic lifter which is operatively connected to a rocker arm and which includes a body having a pressure chamber and a reservoir chamber, a plunger slidably positioned within the body, and a check valve to allow the fluid flow only into the pressure chamber from the reservoir chamber, a solenoid valve positioned by the side of the hydraulic lifter, means for causing the check valve to open to thereby establish the fluid communication between the pressure and reservoir chambers by means of the solenoid valve, and a stopper member for locking the plunger to stop the operation of the hydraulic lifter in association with the means for causing the check valve to urge to open.

Abstract: A variable cylinder device for internal combustion engines comprising an adjuster coupled to a rocker arm of an intake or exhaust valve lift mechanism so as to define a first rocking point of said rocker arm, the lash adjuster having a check ball which is pushed by the operation of a solenoid valve when the engine load is reduced to a small order, as the result of which the rocking point of the rocking arm shifts from the first rocking point to a second rocking point wherein the intake or exhaust valve maintains the closed position.

Abstract: An hydraulic lash adjuster is provided with a hollow cylindrical body having a closed bottom at one end thereof and a hollow cylindrical plunger having an apertured bottom at one end thereof slidably disposed within the body to define a reservoir chamber within said plunger and a pressure chamber between the bottom of said cylinder. A spring biased check valve is located within said pressure chamber in operative association with the apertured bottom of said plunger to control the flow of fluid from the reservoir chamber to the pressure chamber. A cup-shaped cap is provided at the outer end of the plunger for engagement with a push rod of a valve mechanism and is provided with a passage communicating the interior of the plunger with the exterior.

Abstract: An oil-containing hydraulic lifter for lash adjustment comprising relatively movable cylinder and plunger members defining a pressure chamber between their closed ends and a reservoir chamber within the plunger. Means are provided for rapid, one-way flow of the oil from the reservoir to the pressure chamber during outward movement of the plunger and for slow, one-way flow from the pressure to the reservoir chamber during inward movement of the plunger. A flexible, bag-shaped diaphragm extending into the reservoir chamber has its open, upper end sealed liquid tightly to the inner wall of the reservoir for sealing in the oil while expanding and collapsing with reciprocation of the plunger. The reservoir chamber has an increased diameter at that part where the diaphragm undergoes most of its expansion and collapse, thereby spacing the inner wall of the reservoir chamber from the diaphragm by a distance great enough to allow full expansion of the diaphragm in the expanding and collapsing operation thereof.

Abstract: An hydraulic lash adjuster of the type used in the valve trains of internal combustion engines in order to take up the lash for operating clearance includes a cylindrical body member, a plunger member having a reservoir chamber therein being slidably mounted in the body member to define a pressure chamber therebetween, passage means between the reservoir chamber and the pressure chamber controlled by a one-way valve and a floating member disposed on the surface of the hydraulic fluid contained in said reservoir chamber to prevent air from being absorbed into the hydraulic fluid during the operation of the engine.

Abstract: A self-contained hydraulic lash adjuster of the type having a hollow cylindrical plunger slidably and sealingly disposed in a hollow cylindrical body, a reservoir chamber in the plunger, a pressure chamber between the bottom of the plunger and the bottom of the body and a one-way valve controlled passage between said chambers is further provided with a second plunger slidably and sealingly disposed in the reservoir chamber on the upper surface of the hydraulic working fluid therein.

Abstract: A hydraulic fulcrum lifting device for a valve actuating mechanism of an internal combustion engine in which the reservoir formed in the plunger is provided with a deflector encircling a port between the reservoir and a pressure chamber. The deflector functions to prevent air in the reservoir from being drawn through the port to the pressure chamber.

Abstract: A self-contained hydraulic lash adjuster in which a sealing member is provided on the plunger for providing fluid tight seal between the plunger and a cylinder member. The sealing member is of a pair of lips both of which are in fluid tight contact with the cylinder member and are alternately deformed onto the cylinder member upon upward or downward movement of the plunger. During movement of the plunger, fluid-tight seal between the plunger and the cylinder member is assured with a little sliding friction therebetween.

Abstract: A self-contained type lash adjuster is used in the valve train mechanism for internal combustion engines. The lash adjuster comprises an adjuster body having an axial hollow, a plunger body reciprocating within the axial hollow of the adjuster body, a reservoir chamber formed in the plunger body, a pressure chamber formed between the adjuster and plunger bodies, a check valve permitting an oil flow only in the direction from the reservoir chamber to the pressure chamber, a diaphragm positioned in the upper portion of the reservoir chamber, and a plunger return spring biasing the plunger body. The lash adjuster is supported in a recess in a valve spring retainer which is fixedly secured to the end of a valve stem.

Abstract: A self-contained hydraulic lash adjuster which does not depend upon any external source of hydraulic fluid in operation is used in the valve trains of internal combustion engines or similar mechanisms in order to take up the lash or operating clearance in the valve trains. In the lash adjuster a transmitting member such as a fulcrum is engaged with a plunger which is slidably mounted in a bore of a lash adjuster body. A clearance is provided between the transmitting member and the body which is smaller than the clearance provided between the transmitting member and the plunger to reduce the frictional wear between the plunger and the body.

Abstract: A self-contained type lash adjuster is used in the valve train mechanism for internal combustion engines. The lash adjuster comprises an adjuster body having an axial hollow, a plunger body reciprocating within the axial hollow of the adjuster body, a reservoir chamber formed in the plunger body, a pressure chamber formed between the adjuster and plunger bodies, a check valve permitting an oil flow only in the direction from the reservoir chamber to the pressure chamber, a diaphragm positioned in the upper portion of the reservoir chamber, and a plunger return spring biasing the plunger body.

Abstract: A self-contained hydraulic lash adjuster, which does not depend upon any external source of hydraulic fluid in operation, is used in the valve trains of internal combustion engines in order to take up the lash or operating clearance in the valve trains. The lash adjuster comprises a cylinder member, a plunger member slidably fitted therein, said cylinder and plunger members defining a fluid pressure chamber between each end wall thereof, said plunger member forming a reservoir chamber therewithin, and an elastic bag member disposed within the reservoir chamber, the inner wall surface of said elastic bag member being normally in communication with atmospheric pressure while the outer wall surface thereof being normally in contact with the fluid in the reservoir chamber.