Exhaust gas recirculating valve for an internal combustion engine

摘要

An exhaust gas recirculation valve for an internal combustion engine includes a housing comprising an exhaust gas inlet and an exhaust gas outlet, and a valve closing body fastened to a valve rod. The valve rod is movable. A valve seat is arranged between the exhaust gas inlet and the exhaust gas outlet. A guide bushing comprising a first section guides the valve rod in the housing. A sealing ring is arranged at an end of the guide bushing remote from the valve closing body. The valve closing body is lowered onto the valve seat by a movement of the valve rod and lifted from the valve closing body by an opposite movement of the valve rod. A circumferential gap is formed between the valve rod and the guide bushing in the first section of the guide bushing directed toward the sealing ring.

主权项

1. An exhaust gas recirculation valve for an internal combustion engine, the exhaust gas recirculation valve comprising:
a housing comprising an exhaust gas inlet and an exhaust gas outlet; a valve closing body; a valve rod to which the valve closing body is fastened, the valve rod being configured to be movable; a valve seat arranged between the exhaust gas inlet and the exhaust gas outlet; a guide bushing comprising a first section, the guide busing being configured to guide the valve rod in the housing; and a sealing ring arranged at an end of the guide bushing remote from the valve closing body; wherein the valve closing body is configured to be lowered onto the valve seat by a movement of the valve rod and to be lifted from the valve closing body by an opposite movement of the valve rod, wherein, a circumferential gap is formed between the valve rod and the guide bushing in the first section of the guide bushing directed toward the sealing ring, and wherein, a height of the circumferential gap is greater or equal to a maximal stroke height of the valve closing body.