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US08353198B2 Diagnostic method and device for diagnosing an intake system of an internal combustion engine 有权
用于诊断内燃机进气系统的诊断方法和装置

Diagnostic method and device for diagnosing an intake system of an internal combustion engine
摘要：
An internal combustion engine has an intake system (1) and an exhaust gas system (4). An exhaust turbocharger of the internal combustion engine has a compressor (42) arranged in the intake system (1) and a turbine (48) arranged in the exhaust gas system (4) of the internal combustion engine for driving the compressor (42). In order to diagnose the intake system (1), a charge pressure (PHS_AIC_DOWN) of the compressor (42) is determined in a predetermined operating state of the internal combustion engine. A leakage of the intake system (1) downstream of the compressor (42) is recognized if the determined charge pressure (PHS_AIC_DOWN) is lower than the predetermined base charge pressure (PUT_BAS) in the predetermined operating state.
摘要（中）：

内燃机具有进气系统（1）和排气系统（4）。 内燃机的排气涡轮增压器具有布置在进气系统（1）中的压缩机（42）和布置在用于驱动压缩机（42）的内燃机的排气系统（4）中的涡轮机（48）。 为了诊断进气系统（1），在内燃机的预定运行状态下确定压缩机（42）的充气压力（PHS_AIC_DOWN）。 如果在预定操作状态下所确定的充气压力（PHS_AIC_DOWN）低于预定的基本充气压力（PUT_BAS），则识别出压缩机42下游的进气系统（1）的泄漏。

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