摘要:
The invention relates to a method for producing a metal component coated by a hard-material coating, which method comprises the method steps of preparing an anti-caking agent, adding the prepared anti-caking agent to a powder mixture, providing the powder mixture, providing the substrate made of metal, heating the powder and the substrate in a heating device, depositing a coating on the substrate, the coating having a higher hardness than the substrate, and cooling the substrate.
摘要:
A tensioning device, more particularly a hydraulically actuated chain tensioner, for a chain drive of an internal combustion engine, having a tensioner housing, a tensioning piston which is displaceably guided in a piston bore of the tensioner housing and has a piston skirt, a transport securing means for fastening the tensioning piston in the tensioner housing, a adjustment apparatus for incrementally adjusting and limiting the working range of the tensioning piston, and a final position securing means for the captive arrangement of the tensioning piston in the piston bore. The transport securing means, the adjustment apparatus and the final position securing means together have a single securing ring for fastening the tensioning piston in the tensioner housing, the incremental adjustment and limiting of the working range of the tensioning piston and the captive arrangement of the tensioning piston. A chain drive, more particularly a control chain drive, of an internal combustion engine, having such a tensioning device is also provided.
摘要:
An assembly method for joining a telescopic rod part of a length-adjustable connecting rod, the method includes the following steps: providing a first section of the telescopic rod part, the first section comprising a connecting-rod eye and having a connection thread, providing a second section of the telescopic rod part, the second section comprising the piston rod, to which a piston is fixedly connected, and having a connection thread, wherein the second section has already arranged thereon at least sealing and/or supporting and/or closing elements, which are to be secured to the second section and which are to be mounted onto the piston rod and the piston, respectively, from the side of the associated connection thread, providing a tool for establishing a sufficiently strong frictional engagement with the piston rod and the piston, respectively, by means of form-fit clamping, establishing a sufficiently strong frictional engagement with the second section of the telescopic rod part by means of the tool, screw fastening the first section of the telescopic rod part to the second section of the telescopic rod part by means of the respective connection threads, applying the necessary tightening torque between the first section of the telescopic rod part and the second section of the telescopic rod part by means of the attached tool. In addition, the present invention relates to the use of a telescopic rod part of a VCR connecting rod in such a method.
摘要:
A chain component of a chain for transmitting a force includes a steel-based substrate and a hard material layer on an external side of the steel-based substrate. The hard material layer contains metal nitrides and the metal carbide content in the hard material layer decreases toward the external side of the hard material layer.
摘要:
A chain drive assembly for an internal combustion engine comprises a tensioning rail supportable on an engine block so as to be pivotable about a pivot bearing axle and further comprises a pivot bearing that can be provided on the engine block. The tensioning rail having a projection, which protrudes from the tensioning rail relative to the support body, so as to hold, at least during mounting, the tensioning rail at a mounting position. Additionally, the invention relates to the use of such a tensioning rail for mounting on the engine block of an internal combustion engine as well as to a bipartite chain drive of an internal combustion engine and a suitable mounting method.
摘要:
A method for producing a tensioning or guide rail with a base body, and a vibration absorber arranged on the base body is provided, comprising the steps of: providing a base body, at least partially embedding the base body into plastic material that is in a flowable state, and hardening the plastic material to obtain a vibration absorber that is captively arranged on the base body. The method also relates to a respective rail and to a continuous drive for a combustion engine.
摘要:
A tensioning or guide rail for a chain drive, in particular for a chain drive of an internal combustion engine, comprises two spaced-apart contact sections and one non-contact section arranged therebetween, the contact sections each having a sliding surface which is adapted to be brought into contact with a chain, and the non-contact section interconnecting the two contact sections as a support structure. Such a rail is to be configured such that the installation space available can be utilized more advantageously. To this end, the support structure of the non-contact section comprises an opening extending continuously from a front to a rear of the tensioning or guide rail and separating the contact sections provided with the sliding surfaces. The invention also relates to an endless drive of the type in question.
摘要:
A link chain has alternating inner and outer chain links connected by a chain articulation, having a direction of motion, wherein each inner chain link has at least one inner plate, and each outer chain link has at least two outer plates and two chain link pins connecting these plates, each pin being rotationally fixed in a pin opening of the associated outer plate and extending through a link opening of the associated inner chain link to form a chain articulation. The inner and/or outer chain links have plate backs contactable with a tensioning rail or guide rail. A forward region of the plate backs in the direction of motion of a part of the inner and/or outer plates extends at an angle to a plane projected between the center lines of the pin openings or link openings. The vertex of the angle points away from the direction of motion.
摘要:
A rocker joint for a bush chain or roller chain, comprises a bush having a through-passage running along the bush longitudinal axis, a first rocker surface formed in the through-passage, and a pin arranged in the through-passage of the bush and which has a second rocker surface formed thereon. A chain comprises inner and outer chain links, which are offset relative to each other, the inner and outer chain links being connected by rocker joints, each of which comprises a bush and a pin. A friction-reducing joint and a chain with reduced friction and less wear are provided, and thus a reduced CO2 emission of the associated internal combustion engine, the chain being stable and easy to produce. This is achieved in that the bush is configured as a straight circular cylinder in which the through-passage is arranged in the bush eccentrically with respect to the longitudinal axis of the bush.
摘要:
A method for producing high-performance chain link plates with a link plate pitch T, comprises: clocked feeding of a sheet metal band with a feed length V per cycle, pre-punching at least two chain link plate blanks arranged in succession, re-cutting at least one chain link plate blank, wherein at least the still connected head areas of the chain link plate blanks arranged in succession are excepted from the re-cutting process separating the connected head areas of chain link plate blanks arranged in succession, wherein the feed length V is smaller than 2.1×T and the upper and/or lower side of the head areas connected to each other is/are provided at least partially with a concave run by a punching process substantially adjacent to the end face produced later. A method is also provided for producing a high-performance chain and to correspondingly produced high-performance link plates and high-performance chain.