公开(公告)号：US20160208721A1

公开(公告)日：2016-07-21

申请号：US14912786

申请日：2014-08-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Michihiro WAKIMOTO ,  Keigo MIZUTANI ,  Tatsuhiro HASHIDA ,  Kazuhiro WAKAO ,  Keiichiro AOKI

IPC: F02D41/02 ,  G01N33/00

CPC classification number: F02D41/0295 ,  F02D41/0047 ,  F02D41/1444 ,  F02D41/1456 ,  F02D41/1473 ,  F02D41/405 ,  G01N27/4074 ,  G01N33/0042 ,  Y02A50/248

Abstract: A control apparatus for an internal combustion engine having a limiting current sensor includes an electronic control unit. The electronic control unit is configured to: (i) calculate a parameter relating to SOx contained in a detection subject gas using an output current of the sensor obtained when voltage reduction control is implemented to reduce an applied voltage applied to the sensor from a parameter calculation voltage; and (ii) implement the voltage reduction control when an oxygen concentration of the detection subject gas is less than a predetermined concentration or a low oxygen concentration condition, according to which an oxygen concentration of the detection subject gas is predicted to be less than a predetermined concentration, is established.

Abstract translation: 具有极限电流传感器的内燃机的控制装置包括电子控制单元。 电子控制单元被配置为：（i）使用实现电压降低控制时获得的传感器的输出电流，从参数计算中减少施加到传感器的施加电压，来计算与检测对象气体中包含的SOx相关的参数 电压; 和（ii）当检测对象气体的氧浓度小于预定浓度或低氧浓度条件时实施电压降低控制，根据该浓度预测检测对象气体的氧浓度小于预定浓度 集中，成立。