CONTROL DEVICE

• Main Authors: HASEGAWA AKARI, KAYAMA RYUZO, NAGATA FUMIYA, MURAYAMA YUUKI, KOYABU TADAKATSU, SHIMIZU SHOKI
• Format: Patent
• Language: English; Japanese
• Published: 12.12.2019
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEASURING; MECHANICAL ENGINEERING; PHYSICS; STEAM ENGINES; TESTING; WEAPONS

To provide a control device that can acquire temperatures of cells of an exhaust gas sensor without separately providing a circuit for temperature measurement.SOLUTION: An exhaust gas sensor 100 comprises a first cell (a pump cell 150) for exhausting oxygen from exhaust gas generated in an internal combustion engine EG, and second cells (a sensor cell 160 and a monitor cell 170) for outputting a signal having a magnitude depending on a concentration of residual oxygen included in the exhaust gas after the oxygen is exhausted by the first cell. A control device 10 for the exhaust gas sensor 100 comprises a gas temperature acquisition unit 14 for acquiring a temperature of the exhaust gas, and a cell temperature estimation unit 15 for estimating temperatures of the second cells on the basis of the temperature of the exhaust gas acquired by the gas temperature acquisition unit 14.SELECTED DRAWING: Figure 2 【課題】温度測定のための回路を別途設けることなく、排出ガスセンサのセルの温度を取得することのできる制御装置を提供する。【解決手段】排出ガスセンサ１００は、内燃機関ＥＧで生じた排出ガスから酸素を排出する第１セル（ポンプセル１５０）と、第１セルによって酸素が排出された後の排出ガスに含まれる残留酸素の濃度、に応じた大きさの信号を出力する第２セル（センサセル１６０，モニタセル１７０）と、を有するものである。排出ガスセンサ１００の制御装置１０は、排出ガスの温度を取得するガス温度取得部１４と、ガス温度取得部１４によって取得された排出ガスの温度に基づいて、第２セルの温度を推定するセル温度推定部１５と、を備える。【選択図】図２