Air amount detector for internal combustion engine,申请号US20010977308-传众专利搜索

Air amount detector for internal combustion engine

申请公布号：US6662640(B2)

申请号：US20010977308

申请日期：2001.10.16

申请公布日期：2003.12.16

申请人：

DENSO CORPORATION

发明人：YAGI TOYOJI

分类号：F02D45/00;F02D13/02;F02D35/00;F02D41/04;F02D41/14;F02D41/18;(IPC1-7):G01M15/00

主分类号：F02D45/00

摘要：A response delay compensation element for compensating a response delay of an output gMAF of an airflow meter by a phase advance compensation is provided so that an output g of the response delay compensation element is input to the intake air system model. A transfer function of the phase advance compensation iswhere T1 and T2 are time constant of the phase advance compensation, which is set based on at least one of the output gMAF of the airflow meter, engine speed, an intake air pressure, and a throttle angle. The model time constant tauIM of the intake air system model is calculated by variables including volumetric efficiency and the engine speed. The volumetric efficiency is calculated by two-dimensional map having the engine speed and the intake air pressure as parameters thereof.