In embodiments, a mechanical solar tracker for energy and shade disclosed herein includes a positioning cam comprising one or more paths being configured as a function of a latitude location of the mechanical solar tracker; a sleeve coupled to an adjustment arm, the adjustment arm operable to rotate the sleeve about a vertical axis; a cam follower coupled to the sleeve, the cam follower configured to translate a selected path of the one or more paths as the sleeve rotates about the vertical axis, and a surface coupled to the cam follower. In embodiments, the selected path is configured such that as the sleeve rotates about the vertical axis, the cam follower maintains the surface normal to a vector defined by an azimuth angle and elevation angle, wherein the azimuth angle may be the sun azimuth angle and the elevation angle may be the sun elevation angle.

Provided is a tappet capable of supplying lubricating oil to a cam even when provided with a lash adjuster. A tappet (10) includes: a lash adjuster (11) having a plunger (14) and a body (13) in which the plunger (14) is housed so as to be vertically movable, wherein the plunger (14) has a top portion (16) against which a lower end portion of a push rod (88) slidably abuts; and a tappet body (12) which has an assembly hole (45) in which the body (13) is inserted, has a cup-like shape, and has a lower surface portion (27) which slidingly contacts a cam (70). The tappet body (12) has an oil guide passage (30) extending so as to guide lubricating oil from the push rod (88) side to the cam (70).

Provided is a tappet capable of supplying lubricating oil to a cam even when provided with a lash adjuster. A tappet (10) includes: a lash adjuster (11) having a plunger (14) and a body (13) in which the plunger (14) is housed so as to be vertically movable, wherein the plunger (14) has a top portion (16) against which a lower end portion of a push rod (88) slidably abuts; and a tappet body (12) which has an assembly hole (45) in which the body (13) is inserted, has a cup-like shape, and has a lower surface portion (27) which slidingly contacts a cam (70). The tappet body (12) has an oil guide passage (30) extending so as to guide lubricating oil from the push rod (88) side to the cam (70).

A switching roller finger follower comprises an inner arm assembly. A pair of outer arms surround the inner arm assembly. A pivot axle connects the inner arm assembly to pivot with respect to the pair of outer arms from a starting position to a lost motion position. A latch assembly comprises a latch selectively movable from a latched position latching the inner arm assembly to move dependent with the outer arms and an unlatched position unlatching the inner arm assembly to pivot independent of the outer arms. A stop pin spans between the pair of outer arms and through an inner port in an axle of inner arm assembly. The stop pin comprises a clearance fit with the inner port, and the stop pin is configured pivotable independent of the outer arms. At least one return spring biases the stop pin toward the starting position.

A switching roller finger follower comprises an inner arm assembly. A pair of outer arms surround the inner arm assembly. A pivot axle connects the inner arm assembly to pivot with respect to the pair of outer arms from a starting position to a lost motion position. A latch assembly comprises a latch selectively movable from a latched position latching the inner arm assembly to move dependent with the outer arms and an unlatched position unlatching the inner arm assembly to pivot independent of the outer arms. A stop pin spans between the pair of outer arms and through an inner port in an axle of inner arm assembly. The stop pin comprises a clearance fit with the inner port, and the stop pin is configured pivotable independent of the outer arms. At least one return spring biases the stop pin toward the starting position.

The invention relates to a roller tappet (1) for a piston pump, in particular for a high-pressure fuel pump, for supporting a pump piston (2) which can move in a reciprocating motion on a cam (3) or eccentric of a drive shaft (4), comprising a tappet body (5) with an end-side recess (6) and two radial bores (7) which lie diametrically opposite one another at the recess (6) and receive a pin (8), on which a roller (10) is rotatably mounted directly or indirectly via a bearing bush (9), wherein at least one radially or obliquely running feed bore (12) is configured in the tappet body (5) in order to supply a lubricating medium to a radial bearing gap (11) which is configured between the roller (10) and the pin (8) or between the roller (10) and the bearing bush (9), which feed bore (12) opens into the recess (6) in the region of an axial bearing gap (13) between the roller (10) and the tappet body (5). According to the invention, the feed bore (12) is connected to an arcuately running lubricating duct (14) which is configured in a surface (15) of the tappet body (5), which surface (15) delimits the axial bearing gap (13). Furthermore, the invention relates to a piston pump comprising a roller tappet (1) of said type.

The present invention refers to a charge changing control device for a reciprocating engine, comprising at least one cam follower configured for being pivotably actuated around a pivot axis (P) upon rotational movement of a camshaft, and an adjustment unit configured for setting at least three different charge-changing modes of the device by translationally displacing the pivot axis relative (P) to a rotational axis (R) of the camshaft.

An actuator with which fixation of a sliding surface is unlikely to occur and a desired operation can be reliably performed. An actuator includes a housing, a shaft having one end side accommodated in the housing, having the other end side installed outside the housing, and movable along an axial direction, a polymer material actuator, accommodated in the housing, having one end connected to an inside of the housing, having the other end connected to the shaft, and extended and contracted by voltage application, and a movement adjustment unit adjusting a movement of the shaft in accordance with a position of the shaft. The movement adjustment unit has an electric motor installed in the housing, a cam connected to the electric motor and rotating by a drive force of the electric motor, and a cam follower provided on the shaft and abutting against the cam.

An actuator with which fixation of a sliding surface is unlikely to occur and a desired operation can be reliably performed. An actuator includes a housing, a shaft having one end side accommodated in the housing, having the other end side installed outside the housing, and movable along an axial direction, a polymer material actuator, accommodated in the housing, having one end connected to an inside of the housing, having the other end connected to the shaft, and extended and contracted by voltage application, and a movement adjustment unit adjusting a movement of the shaft in accordance with a position of the shaft. The movement adjustment unit has an electric motor installed in the housing, a cam connected to the electric motor and rotating by a drive force of the electric motor, and a cam follower provided on the shaft and abutting against the cam.

A follower mechanism for use in a bore of an internal combustion engine, including an outer sleeve having an inner surface and an outer surface defining a pair of axially extending shaft grooves that are formed in the inner surface and are parallel to a longitudinal center axis of the follower mechanism, an inner cup including a side wall defining a pair of shaft apertures, the inner cup being slidably disposed in the outer sleeve, a shaft having a first end and a second end, each of the first end and the second end extending through a corresponding shaft aperture of the inner cup and being slidably disposed in a corresponding one of the shaft grooves, and a roller follower rotatably received on the shaft such that a portion of the roller follower extends axially outwardly beyond the outer cup.