Patent ID: 6341598
Filing Date: 2002-01-29
Classification: F02M,Y02T

Abstract:
Apparatus for regulating the temperature of intake air of an internal combustion engine, said apparatus comprising:a pivotable control flap disposed in a raw air intake duct leading to an air filter; a pressure box for operating the pivotable control flap, said pressure box containing a diaphragm; an operating rod operatively connected between said diaphragm for moving said control flap in response to movements of the diaphragm, said operating rod being comprised of a plurality of rod elements which are pivotable relative to each other and which together form a movable mechanical linkage, one of said rod elements extending through an opening in said pressure box into the interior of said pressure box, whereby said mechanical linkage is guided mechanically in the pressure box, and said one rod element being connected to said diaphragm; a seal for sealing said movable mechanical linkage relative to said pressure box, said seal comprising a synthetic resin friction bearing which contacts said one of said rod elements over a given length, and which is tightly anchored in said opening in the pressure box; and a Teflon ring arranged at one end of the synthetic resin friction bearing surrounding said movable mechanical linkage in a pressure-tight manner.