公开(公告)号：US20100222982A1

公开(公告)日：2010-09-02

申请号：US12394716

申请日：2009-02-27

申请人： Lan Wang ,  Robert J. Genslak ,  Wenbo Wang ,  Matthew Squire ,  Jinchun Peng ,  Edward Stutevilie ,  Kurt D. McLain

发明人： Lan Wang ,  Robert J. Genslak ,  Wenbo Wang ,  Matthew Squire ,  Jinchun Peng ,  Edward Stutevilie ,  Kurt D. McLain

IPC分类号： F02D43/00

CPC分类号： F02D41/0255 ,  F02D41/1447 ,  F02D41/18 ,  F02D2200/0414 ,  F02D2200/0802 ,  Y02T10/26

摘要： A control system for an engine having a catalytic converter includes an energy calculation module that calculates a calculated mass air flow (MAF) of intake air of the engine based on a requested torque and a requested spark timing that correspond to a desired thermal energy of exhaust of the engine, and that determines an expected thermal energy of the exhaust based on the calculated MAF, and an energy residual module that determines a thermal energy residual of the exhaust based on the expected thermal energy and an estimated thermal energy of the exhaust, wherein the estimated thermal energy is based on a measured MAF of the intake air. The control system includes an energy evaluation module that determines a diagnostic result that indicates whether the catalytic converter is operating within a target temperature range based on the thermal energy residual. Related control methods are also provided.

摘要翻译： 一种用于具有催化转化器的发动机的控制系统，包括能量计算模块，该能量计算模块基于所要求的扭矩和与期望的排气热能相对应的所要求的火花正时来计算发动机的进气的计算质量空气流量（MAF） 并且基于所计算的MAF确定排气的预期热能;以及能量残余模块，其基于预期的热能和所估计的排气的热能来确定排气的热能残余，其中 估计的热能基于进气的测量MAF。 控制系统包括能量评估模块，该能量评估模块基于热能残差确定指示催化转化器是否在目标温度范围内运行的诊断结果。 还提供了相关的控制方法。