Intake manifold for an internal combustion engine
AssigneeVolkswagen Aktiengesellschaft
InventorsHans-Ulrich Jahrens, Gunter Sohlke
Life of this patent
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Abstract
An intake manifold is formed by two half-shells into which inserts are mounted to form intake ducts. To adapt the manifold to internal combustion engines of differing displacements and to achieve sealing of the intake ducts relative to an air-collecting region, the inserts are inserted into a half-shell with an overlap between adjacent parallel wall sections and the extent of the overlap is selected according to the desired cross-sectional area of the ducts. Sealing of the intake ducts is accomplished by providing seals along flanges which are spaced from the intake duct by a distance corresponding to the overlap of the parallel wall sections.
Claims11
An intake manifold for an internal combustion engine comprising two half-shells joined along a common parting plane to provide a central air-collecting region and to form outer pipe walls of cylinder-specific tubular intake ducts, a plurality of inserts mounted in the half-shells providing inner pipe walls of the intake ducts which communicate with the central air-collecting region, each of the half-shells being formed on both sides of each pipe wall with wall sections which are substantially parallel to each other and the inserts having corresponding parallel wall sections which engage parallel wall sections of the half-shell in which they are mounted so as to overlap therewith in an overlap region, and a seal arranged between mutually facing wall sections of each insert and the corresponding half-shell at an end of the wall overlap region which is remote from the corresponding intake duct.
Dependencies are inferred from the claim text.