Suction pipe arrangement in reciprocating piston internal combustion engines

A suction pipe arrangement for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means as subdivided into two groups of tuned suction pipes, characterized in that the common suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means leads towards the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that within the area in which the tuned suction pipes of the first group cross with the tuned suction pipes of the second group, both groups are arranged on one another.

A suction pipe arrangement for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means are subdivided into two groups of tuned suction pipes, characterized in that the common suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means lead toward the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that an imaginary line extending substantially centrally and transversely between both groups corresponds approximately to the axis of symmetry in relation to the arrangement of the two groups.

A suction pipe arrangement for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means are subdivided into two groups of tuned suction pipes, characterized in that the common suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means lead toward the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that three tuned suction pipes are provided in each group at least two tuned suction pipes of each group are arranged adjacent one another at the common suction pipe means, as viewed in the longitudinal direction of the common suction pipe means.

A suction pipe arrangement for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means are subdivided into two groups of tuned suction pipes, characterized in that the suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means lead toward the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that the tuned suction pipes are constructed conically whereby the ends of the pipes adjacent the engine side have the smaller flow cross section.

A suction pipe arrangement for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means are subdivided into two groups of tuned suction pipes, characterized in that the common suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means lead toward the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that the ends of the tuned suction pipes on the engine side are connected with each other by a common flange.

A suction pipe arrangemeng for reciprocating internal combustion engines with in-line cylinders which includes a common suction pipe means for the cylinders having a fastening flange for the fastening of a valve connection, and tuned suction pipe means extending between the common suction pipe means and the cylinder head of the engine, the tuned suction pipe means are subdivided into two groups of tuned suction pipes, characterized in that the common suction pipe means is located in the longitudinal direction adjacent the cylinder row approximately at the height of the cylinder head, and in that the first group of tuned suction pipes which branch off from the left portion of the common suction pipe means, as viewed in each case from the common suction pipe means toward the cylinder head, leads toward the right cylinder head connecting side while the second group of tuned suction pipes which branch off from the right portion of the common suction pipe means leads toward the left cylinder head connecting side, the tuned suction pipes extending substantially S-shaped in each case, and in that the separating plane disposed between the two groups and the horizontal plane extending through the ends of the tuned suction pipes on the engine side are inclined to one another in such a manner that said two planes subtend an angle of about 5.degree..

A suction pipe arrangement for a reciprocating internal combustion engine having cylinder head means, the suction pipe arrangement comprising:

• a common suction pipe means extending in the longitudinal direction of said cylinder head means, a first group of tuned suction pipes branching off from a left portion of the common suction pipe means, as viewed from the common suction pipe means toward the cylinder head means, and extending toward a right portion of said cylinder head means, a second set of tuned suction pipes branching off from a right portion of the common suction pipe means and extending toward a left portion of said cylinder head means, each of said tuned suction pipes of a respective group extending parallel to each other from said cylinder head means to said common suction pipe means.