Vapor canister and evaporative emission control system for vehicle

• Main Author: LANG DIETMAR
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

The present invention relates to a vapor canister for a vehicle evaporative emission control system, comprising: a canister housing (20) defining an interior volume (22) for receiving one or more volumes of sorbent (24.1, 24.2, 24.3) therein; a fuel vapor inlet port (26) for connecting the canister with a fuel tank (16); an exhaust port (28) for drawing fresh air into the canister; a purge port (30) for withdrawing fuel vapors from the canister; and a pump (50) integrated with the tank housing (20). An integrated pump (50) is actuated to provide an operating pressure or underpressure in the tank. The system is used for various operation modes, such as tank purge, leak detection diagnosis, fueling or engine shutdown. 本发明涉及一种用于车辆蒸发排放控制系统的蒸气罐，包括：罐壳体(20)，其限定用于将一个或多个体积的吸附剂(24.1、24.2、24.3)接收其中的内部体积(22)；用于将罐与燃料箱(16)连接的燃料蒸气入口端口(26)；用于将新鲜空气吸入罐内的排气端口(28)；用于从罐抽出燃料蒸气的净化端口(30)；以及与罐壳体(20)集成的泵(50)。集成泵(50)被致动以在罐中提供操作压力或欠压。其用于各种操作模式，诸如罐净化、泄漏检测诊断、加燃料或发动机关闭。