Internal-combustion engines – Intake manifold – For engine having radiating cylinders
Patent
1995-04-13
1996-02-20
Macy, Marguerite
Internal-combustion engines
Intake manifold
For engine having radiating cylinders
12318455, F02B 2702
Patent
active
054920884
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to an intake pipe system for a multicylinder internal combustion engine.
In one state-of-the-art intake pipe system of this type (EP-B 0177794, FIGS. 4 and 5) the individual intake pipes are combined with an intake distributor to form a single unit on which the intake distributor is flange-mounted as a separate component, this intake distributor communicating on one side with the intake manifold by way of a throttle valve element and on the other with the individual intake pipes. The pivoting valves for the second set of intake pipes are mounted on shafts which extend through the intake distributor. This state-of-the-art intake pipe system is relatively costly to manufacture and creates problems from the viewpoint of reliable interaction of the pivoting valves mounted in the intake distributor with the second set of individual intake pipes mounted in another component.
The object of the invention is to create a generic intake pipe system which is characterized by simplicity of structure and accordingly more cost-effective manufacture and which ensures reliable interaction of the pivoting valves with the second set of individual intake pipes.
Production is simplified by the circumstance that the intake distributor and the individual intake pipes are made up of an integral casting and the offsets that are virtually unavoidable in the joining of two castings because of the process tolerances are eliminated. Since the pivoting valves are mounted in a single casing that must be inserted only into the longitudinal bore in the casting intersecting the second intake pipe, reliable operation of the pivoting valves in conjunction with the second set of individual intake pipes is ensured, and in addition the possibility is provided of premounting the pivoting valves for the second set of intake pipes for all cylinders of a bank of cylinders. This presents the particular advantage that the shaft bearing the pivoting valves is mounted in the casing and not, as is the case with the state-of-the-art design, in the intake distributor on two points situated a relatively great distance from each other.
In order to reduce the space required for installation it is advisable for the intake distributor to be tubular and for the first set of intake pipes to extend through an arc greater than 270.degree. around the intake distributor and for every other individual intake pipe to extend radially relative to the associated first individual intake pipe on the inside over a partial area of the latter and to have a common wall with this area and end in the first individual intake pipe near the end of the latter on the cylinder side. The longitudinal bore is preferably mounted so that it intersects the second set of individual intake pipes near its junction with the first set of individual intake pipes.
This design is especially well suited for an internal combustion engine with two V-mounted cylinder banks, the individual intake pipes associated with the cylinders of the first cylinder bank extending clockwise and the individual intake pipes associated with the second cylinder bank extending counterclockwise around the intake distributor, and in the longitudinal direction of the intake distributor a first and a second individual intake pipe following a first and a second individual intake pipe for a cylinder of the second cylinder bank. A first longitudinal bore intersecting the second set of individual intake pipes for the cylinders of the first cylinder bank and a second longitudinal bore intersecting the second set of individual intake pipes for the cylinders of the second cylinder bank for the cylinders of the second cylinder bank are here provided, into each of which is introduced a casing with apertures, and into the latter pivoting valves mounted on a shaft are inserted. These two shafts are connected to each other in a state-of-the-art arrangement for common rotation.
In order to inhibit as little as possible the process of intake into the second set of individual intake pipes, it is advisabl
REFERENCES:
patent: 4664076 (1987-05-01), Miyano et al.
patent: 4671217 (1987-06-01), Hitomi et al.
patent: 4726329 (1988-02-01), Atkin
patent: 4854271 (1989-08-01), Miyano et al.
patent: 4932369 (1990-06-01), Parr
patent: 5033417 (1991-07-01), Van Basshuysen et al.
patent: 5267543 (1993-12-01), Novak et al.
Audi AG
Macy Marguerite
LandOfFree
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