Automobile exhaust gas recycling circulating valve

Abstract

The invention relates to an automobile exhaust gas recycling circulating valve which comprises a housing, an upper cover, a valve seat and a valve core, wherein a bearing is connected between the housing and the valve seat; the housing is internally provided with a sliding sleeve which is sheathed with a spacer sleeve; the spacer sleeve is provided with a fixed plate and a lower bottom plate; a framework is arranged between the fixed plate and the lower bottom plate; a coil is wound on the framework; the sliding sleeve is internally provided with a ring-shaped inner ring; one end of the valve core is blocked in the valve seat, and the other end of the valve core sequentially passes through the bearing and the inner ring, and is connected with a sensor; a first spring is arranged between the sensor and the upper cover; a bearing gasket is arranged between the end surface of the bearing and the outer side wall of the valve core; the valve core is sheathed with a second spring; one end of the second spring props against the inner side of the spacer sleeve, and the other end of the second spring props against one side of the inner ring; and the valve core consists of a core rod and a core head which are connected with each other by riveting. The automobile exhaust gas recycling circulating valve adopts the valve core with a split-type structure, so that the valve core can be conveniently and rapidly manufactured.

Description

technical field [0001] The invention relates to the field of exhaust gas recirculation, in particular to an automobile exhaust gas recycling cycle valve. Background technique [0002] The European Automobile Emission Standard is a vehicle exhaust emission standard jointly adopted by EU countries to limit the harm caused by automobile exhaust pollutants to the environment. There are currently limits on nitrogen oxides, hydrocarbons, carbon monoxide and particulate matter emitted by almost all types of vehicles, such as cars, trucks, trains, tractors and similar machines, barges, but excluding seagoing vessels and aircraft. Vehicle emission standards are different for each vehicle type. European standards are implemented jointly by the Economic Commission for Europe's vehicle exhaust emission regulations and the European Union's vehicle exhaust emission directives. Automobile exhaust emission regulations are voluntarily recognized by ECE participating countries, and emission...

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