Internal-combustion engines – Engine speed regulator – Having plural throttle valve structure
Reexamination Certificate
2000-01-03
2001-12-25
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Engine speed regulator
Having plural throttle valve structure
C123S190500
Reexamination Certificate
active
06332449
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a device for controlling the opening and closing of at least one internal combustion engine cylinder head air conduit.
BACKGROUND OF THE INVENTION
In general, devices for controlling the opening and closing of internal combustion engine air intake conduits are comprised of an axis arranged in the cylinder head that passes through the intake conduits and is equipped plumb over each conduit with a countersinking on which is attached, using two screws, a butterfly, that has the overall shape of a disk.
Such devices require many extremely precise millings in the cylinder head, as well as the particularly difficult mounting of the butterflies in the conduits which can for example produce the risk of losing the screws in the intake conduits, thus requiring a long and costly mounting process.
SUMMARY OF THE INVENTION
The object of this invention is to propose a device for controlling the opening and closing of a least one intake conduit that makes it possible to resolve the afore-mentioned inconveniences.
With this end in view, this invention relates to a device for controlling the opening and closing of at least one internal combustion engine cylinder head air intake conduit, characterized by the fact that it comprises a cylindrical sliding gate transversely arranged relative to the air conduit in a bore arranged in the cylinder head mobile between a first position closing the conduit and a second position opening said conduit by the action of actuating means.
The controlling device as set forth in the invention may also have one or several of the following characteristics:
the sliding gate is capable of moving in a translatory motion in the bore,
the sliding gate is capable of moving in a rotational motion in the bore,
for each conduit, the cylindrical sliding gate is comprised successively on its length, on the one hand of a first part creating a platform that, in a cross section, has the overall shape of a cross and on the other hand of a second part that is comprised of a vertical partition whose length is approximately equal to the diameter of a conduit, and each of these parts is delimited by two disks perpendicular to the longitudinal axis of the sliding gate,
for each conduit, the sliding gate is comprised successively on its length, on the one hand of a first part creating a platform that, in a cross section, has the overall shape of a cross, and on the other hand of a second part that is comprised of a cylindrical part with a hole whose longitudinal symmetry axis is perpendicular to the longitudinal axis of the sliding gate and whose diameter is equal to the diameter of the corresponding air intake conduit,
the sliding gate is comprised, on one of the parts that creates the platform, of a sliding gate foolproofing means in the bore making it possible to guarantee the appropriate position of said second parts plumb over the air intake conduits,
the foolproofing means is comprised of a longitudinal groove that is capable of receiving the end of a guide screw that is attached to the cylinder head,
the actuating means is comprised of a vacuum chamber created between one of the extremities of the cylinder head and a cover plate with a hole that creates a vacuum system that can be controlled by a calculator in response to the engine ratings,
the actuating means is comprised of a small rod attached to one of the extremities of the sliding gate and linked to a vacuum cell actuated by a calculator in response to the engine ratings,
the sliding gate is made of a one-piece set created by molding a plastic material that is capable of withstanding temperatures that are less than or equal to 100 degrees Celsius such as for example polyamide.
REFERENCES:
patent: 5069175 (1991-12-01), Simko
patent: 5081961 (1992-01-01), Paul et al.
patent: 5596966 (1997-01-01), Elder
patent: 0480393 (1991-10-01), None
patent: 725210 (1996-07-01), None
SD/0177/1998.050/UK Technyl C 548B V15 Product sheet, May 1998, Rhodia Plastics, 2 pages.
Automobiles Peugeot
Castro Arnold
Connolly Bove & Lodge & Hutz LLP
Yuen Henry C.
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