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    • 8. 发明授权
    • Diagnostic device and diagnostic method for fuel vapor treatment system of vehicle
    • 汽车燃油蒸气处理系统诊断装置及诊断方法
    • US08033271B2
    • 2011-10-11
    • US12433963
    • 2009-05-01
    • Seiji Yoshimura
    • Seiji Yoshimura
    • F02M33/02F02M25/08
    • F02M25/0809F02D41/0032F02D41/22F02D41/2422Y02T10/40
    • A diagnostic device for a fuel vapor treatment system having: a canister that captures fuel vapor generated in a fuel tank; a purge passage for purging fuel vapor from the canister to an intake passage of an internal combustion engine; a purge valve provided in the purge passage to adjust a flow rate of fuel vapor; a processing device that depressurize an fuel vapor path extending from the fuel tank to the purge valve via the canister by a pump and performs a diagnostic processing for diagnosing a leak of fuel vapor from the fuel vapor path based on a change in pressure in the fuel vapor path during depressurization; and an angle detection device that detects an angle of inclination of the vehicle. The processing device determines, based on an inclination angle of the vehicle detected by the angle detection device, whether the diagnostic processing can be performed.
    • 一种用于燃料蒸汽处理系统的诊断装置,具有:罐,其捕获在燃料箱中产生的燃料蒸气; 吹扫通道,用于将燃料蒸气从罐排出到内燃机的进气通道; 设置在净化通道中以调节燃料蒸气的流量的净化阀; 一种处理装置,其通过泵将经由所述罐从所述燃料箱延伸到所述排放阀的燃料蒸气路径减压,并且执行用于基于所述燃料中的压力变化来诊断来自所述燃料蒸气路径的燃料蒸气泄漏的诊断处理 减压过程中的蒸气路径; 以及检测车辆的倾斜角度的角度检测装置。 处理装置基于角度检测装置检测到的车辆的倾斜角度来判定是否能够进行诊断处理。