Essay About Longitudinal Bore And Intake Pipe System

Intake Pipes
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An intake pipe system for a multicylinder internal combustion engine,
an intake distributor (2),
a first set of individual intake pipes (4 to 9) positioned side by side and
extending from the intake distributor and each leading to a cylinder,
a set of shorter second individual intake pipes (12) extending from the
intake distributor (2) and each ending in a first individual intake pipe,
pivoting valves (14) for blocking or clearing the second set of individual
intake pipes,
wherein the intake distributor (2) and the first and second sets of
individual intake pipes (6 to 9 and 12) are made up of an integral casting
(1) having a longitudinal bore (16) intersecting the second set of
individual intake pipes (12), and wherein there is introduced into this
longitudinal bore a casing (15) having a central through bore (19) and
openings (17) aligned with the second set of individual intake pipes (12),
in each of which openings a pivoting valve (14) is mounted on a shaft (20)
extending through the through bore (19).
2. An intake pipe system as claimed in claim 1, wherein the intake
distributor (2) is tubular, the first set of individual intake pipes (4 to
9) extend through an arc of more than 270Ðo around the intake
distributor, every other individual intake pipe extends parallel to the
associated first individual intake pipe radially inside which it extends
and has with it a common wall (13) and ends in the first individual intake
pipe near the end of the first individual intake pipe on the cylinder
side.
3. An intake pipe system as claimed in claim 1 or claim 2, wherein the
longitudinal bore (16) intersects the second set of individual intake
pipes (12) near their junction with the first set of individual intake
pipes.
4. An intake pipe system as claimed in claims 1 or 2 for an internal
combustion engine with two cylinder banks arranged