Abstract: A device for providing angular adjustment between two drivingly connected shafts utilizes a positioning piston which can be moved axially between a driven sprocket wheel carrier and a flanged shaft connected to a camshaft so as to divide a hollow space formed by sprocket wheel carrier and flanged shaft into two working spaces. The positioning piston is positively connected both to the sprocket wheel carrier and to the flanged shaft via helical toothings. Depending on the position of a control piston arranged in the hollow flanged shaft, pressure oil is channelled out of the engine oil circuit into into one working space or the other and displaces the positioning piston in the axial direction. Via the two helical toothings, this longitudinal displacement of the positioning piston brings about a relative rotation of the camshaft with respect to the driven sprocket wheel carrier. Adjustment in both directions is effected by a hydraulic arrangement alone, without any auxiliary force.

Abstract: Due to the present energy problems there is a need for a more efficient internal combustion engine. Herein is disclosed a means of making the engine more efficient through use of a flywheel apparatus. The flywheel provides a means of allowing the crankshaft of the engine to be rapidly advanced to that of the flywheel on the power strokes which will transfer the heat produced to rotatable power before the heat can be lost into the engine block. The flywheel further comprises the means of rapidly retarding the crankshaft on the compression strokes so that in the high speed cycle its speed would equal 5000 RPM, while the slow cycle is 1000 RPM, with the total RPM being 3000 RPM or midway between the slow and high speed cycles. A cam connected to a flywheel shaft drives cam action rods housed within the flywheel housing outward against nitrogen charged bladders on the power strokes building up potential energy within the bladder and is used to slow the rotational motion on non power strokes of the engine.

Abstract: A device (10) for varying the angular phase relation between a camshaft (12) and a crankshaft (unshown) in response to axial displacement of an advancing plate (20) drivingly connected to a support (16) via straight splines (16f) and a drive (18) via angled splines (18d). The support (16) is fixed to an end (12a) of the camshaft (12) for rotation therewith. The drive (18) is journaled on the support (16) and is driven by and in phase with the crankshaft. The advancing plate (20) is also threadably connected to a drum (36) via threads (20c,36a) and the axial displacement is effected by relative rotation between the plate (20) and the drum (36). A clockspring (24) reacting between the support (16) and drum (36) tends to rotate the drum (36) faster than the plate (20) for positioning the plate (20) in a first limit position.

Abstract: In an arrangement for the relative angular position change of two shafts drivingly connected with each other, especially between a crankshaft supported in an engine housing of an internal combustion engine and a cam shaft, the cam shaft is equipped with a driving gear which is angularly movably arranged relative to the cam shaft by way of an axially displaceable coupling member. An actuating mechanism for the axial displacement of the coupling member for an angular position change of the cam shaft relative to the driving gear and therewith to the crankshaft is arranged structurally separate from the cam shaft at a detachable engine housing cover. The actuating mechanism includes a hydraulically double-acting piston in a cylinder. The piston is detachably connected with a coupling rod whereby the coupling rod, in its turn, cooperates with the coupling member by way of a joint having three degrees of freedom.

Abstract: This invention relates to a hydraulic adjustment arrangement for the control of the injection start for a motor vehicle internal combustion engine, consisting of a primary part on the side of the internal-combustion engine and a secondary part on the side of the injection pump as well as radial pistons operating as a function of the admission of hydraulic oil, said radial pistons operating as a function of the admission of hydraulic oil, said radial pistons being guided in cylinders contained in the secondary part and interacting with levers extending in a circumferential direction and being pivoted on the secondary side, flexible connectors resting on said levers in one portion and fixed to the primary part on another portion, such that a radial movement of the pistons and as corresponding outward swivel movement of the levers and the flexible connectors causes a rotation of the secondary part relative to the primary part.

Abstract: Apparatus for the angular displacement of a shaft, such as a camshaft, with respect to a drive wheel comprising a coupling having opposed cylinders by which an active relative displacement can be effected in opposite directions. The position of the shaft and of the drive wheel is determined by pulse transmitters and sensors and is evaluated in an electronic circuit for the determination of the angular displacement and its control.

Abstract: An infinitely variable phase adjuster for e.g. adjusting internal combustion piston engine valve timing by selecting the relative rotational positions of the engine crankshaft and a camshaft of the engine. Control is effected by adjusting a "lock" volume of oil on one side of a pressure fluid operable member displaceable to shift the phase.

Abstract: An internal combustion engine has n member of cylinders, a piston in each cylinder connected to a crankshaft (2), each piston being in phase or out of phase with the others by A.degree. or a multiple thereof (A=720/n), cams for actuating inlet and exhaust valves to each cylinder, and a cam drive mechanism (5) which rotates the cams in phased relationship with the crankshaft (2) to open the valves in sequence for a desired angle of rotation of the crankshaft. The cam drive mechanism also includes means for combining the rotational movement of the cams with a phased oscillatory movement of the camshaft (3) and cams of variable amplitude about the axis of rotation at a frequency f times the crankshaft frequency so that over the period which the valves are opened and/or their timings variable, f has the following values:f=2n when the number of cylinders n=1;f=n or n/2 when n=2;and f=n/2 when n=3 or more. The selection of the frequency of the oscillations allows all the cams to be mounted on the same camshaft.

Abstract: An apparatus for the rpm-dependent adjustment of the timing of an injection pump for internal combustion engines (shaft-type injection adjuster), in which a rotationally driven primary part is connected in a rotationally coupled manner with a secondary part but with the rotational angle between them being variable. The connection is effected via an axially displaceable sliding sheath, which is positively connected via at least one of the parts via a bevel gear and simultaneously acts as an adjusting piston. The working face of this adjusting piston is supplied with a control pressure by a centrifugal force control piston supported in a separate transverse bore in the primary part, either directly or with the intermediacy of an additional control piston, with respect to which then the adjusting piston effecting the coupling between the driving part and the driven part is embodied as a followup piston.

Abstract: Centrifugal weight members are accommodated within a housing arranged concentrically with a driven rotary member and rotatable in unison therewith, and engage a driving rotary member through double eccentric cam means. The centrifugal weight members define a radially inner chamber in cooperation with the driven rotary member, and radially outer chambers in cooperation with the housing, and are formed with passages communicating the above chambers with each other.

Abstract: To avoid the lifting off and re-impacting of the flyweights (13) of a fuel injection timing device on their associated slide surfaces (14, 15) during the occurrence of a negative torque, it is proposed to transmit a part of this torque by an oil film. For this purpose, lubricating oil from the internal combustion engine flows through the timing device. At least one of the flyweights (13) cooperates as a transmission element (21) with a slide member (22) and with the two coupling parts (11, 12) whereby slide surfaces (23-28) with areal abutments are provided between the parts, between which an effective oil film can form.

Abstract: An injection timing control device for an internal combustion engine includes a connector plate constantly biased in a predetermined direction. A hydraulic actuator urges the connector plate in the other direction in response to a fluid pressure communicated thereto, thereby actuating an eccentric cam mechanism to vary a fuel injection timing. The line of action of the biasing force and that of the urging force opposite to the biasing force, each imparted to the connector plate, lie in a common plane which contains an axis of the hydraulic actuator, so that the connector plate is prevented from tilting and thereby effecting the operation of the cam mechanism.

Abstract: A camshaft for the drive of an internal combustion engine has a hollow shaft carrying one or more cams or partial cams and an inner shaft disposed within the hollow shafts and rotatable relative to the hollow shaft. The inner shaft has one or more cams or partial cams disposed outside the hollow shaft and attached for rotation with the inner shaft through clearances in the hollow shaft. A camshaft driving arrangement includes a camshaft timing gear coupled with both shafts and a device responsive to a parameter characteristic of the operating conditions of the drive for adjusting the rotational position of either one or both of the inner and hollow shafts relative to the camshaft timing gear. The adjusting device includes an electric motor fixed on the timing gear and controlled by electrical signals.

Abstract: A hydraulic automatic device for the injection advance of a diesel engine. The device includes a hub fixed to the pump camshaft and a casing fixed to the drive pinion of the pump. Two rollers in the casing bear on the ramps of the pistons of which the position is a function of the speed of rotation, owing to two inertia blocks, the thrust of the pistons and the control of the slide valve of a hydraulic distributor. Thus at each speed of rotation, there corresponds a certain angular displacement of the components and a certain advance of the injections.

Abstract: A fuel injection timing device for an internal combustion engine comprises a cam shaft connected to a fuel injection pump, a driven section coupled to the cam shaft and having a driven flange, a driving flange adjacent to the driven flange and coaxial with the cam shaft, a driven gear fixed to the driving flange so as to be coaxial with the cam shaft and in mesh with a driving gear driven by the internal combustion engine in a cylinder block facing the fuel injection pump, and a cam shaft phase angle changing mechanism for advancing and delaying the cam shaft in phase angle in cooperation with the driving flange and the driven flange. The timing device has a casing which contains the driven section, the driving flange, and the cam shaft phase angle changing mechanism. One end of the casing is supported by the fuel injection pump, and the other end supports the driving flange.

Abstract: A hydraulic automatic device for the injection advance of a diesel engine. The device includes a hub fixed to the pump camshaft and a casing fixed to the drive pinion of the pump. Two rollers in the casing bear on the ramps of pistons, the position of which is a function of the speed of rotation of the device, owing to two inertia blocks, the thrust of the pistons and the control of the slide valve of a hydraulic distributor. Thus at each speed of rotation, there corresponds a certain angular displacement of the components and a certain advance of the injections.

Abstract: This invention relates to a timing variator device for an internal combustion engine, comprising a coupling between the cam shaft and the drive gear, which is capable of making angular movements between the coupled parts according to the rotational speed, and in which said movement is actuated by the engine lubricating oil under the control of a valve element constituting the member sensitive to the engine speed.

Abstract: The invention concerns a hydraulic automatic device for the injection advance of a diesel engine. The device comprises a hub fixed to the pump camshaft and a casing fixed to the drive pinion of the pump. Two rollers in the casing bear on the ramps of pistons of which the position is a function of the speed of rotation, owing to two inertia blocks, the thrust of the pistons and the control of the slide valve of a hydraulic distributor. Thus, at each speed of rotation, there corresponds a certain angular displacement of the components and a certain advance of the injections.

Abstract: An injection timing device is proposed for internal combustion engines, by means of which the mutual rotary position of the output shaft with respect to the input shaft can be varied in dependence on the speed and on at least one further operating parameter. The timing device comprises flyweights, operating in dependence on the speed against the force of resetting springs, and hydraulically operated control elements which engage the flyweights, these control elements, which are effective radially toward the outside, being accommodated within the timing element. By changing the position of the control elements, the radial position of the flyweights, which otherwise is determined only by centrifugal force, can be additionally varied in dependence on at least one further operating parameter of the engine, preferably the load, in order to correct the instant of injection.

Abstract: A variable valve timing mechanism for an internal combustion engine including at least one valve-actuating camshaft driven from a crankshaft is described. The valve timing mechanism comprises a movable member which is arranged in use to be rotatable by the crankshaft and movable in translation relative to the camshaft in dependence upon an engine operating condition such as engine load or speed. The movable member is connected to the crankshaft by an eccentric linkage such that movement of the movable member relative to the camshaft varies the angular position of the camshaft relative to the crank and also varies the rate of angular movement of the camshaft, thereby varying the valve timing.