18356376. CONTROLLER FOR INTERNAL COMBUSTION ENGINE, CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE, AND MEMORY MEDIUM simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

CONTROLLER FOR INTERNAL COMBUSTION ENGINE, CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE, AND MEMORY MEDIUM

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Yusuke Joh of Toyota-shi (JP)

Tomoyuki Tsuji of Nagakute-shi (JP)

Yuki Ikejiri of Nishio-shi (JP)

Masashi Hakariya of Nisshin-shi (JP)

Makoto Yamazaki of Gotemba-shi (JP)

Yoshikazu Asami of Gotemba-shi (JP)

Hisao Kiyono of Toyota-shi (JP)

Tatsuaki Arisawa of Toyota-shi (JP)

Yoshifumi Matsuda of Toyota-shi (JP)

Tsubasa Sugano of Nisshin-shi (JP)

CONTROLLER FOR INTERNAL COMBUSTION ENGINE, CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE, AND MEMORY MEDIUM - A simplified explanation of the abstract

This abstract first appeared for US patent application 18356376 titled 'CONTROLLER FOR INTERNAL COMBUSTION ENGINE, CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE, AND MEMORY MEDIUM

Simplified Explanation

The abstract describes a process for diagnosing anomalies in an exhaust purification device of an internal combustion engine based on temperature differentials in the upstream and downstream gases.

• An upstream integrated value is calculated by subtracting the gas temperature at the starting point from the temperature after the engine starts.
• A downstream integrated value is calculated in a similar manner for the downstream gas temperature.
• An anomaly is detected when the deviation between the upstream and downstream integrated values is smaller than a reference level.
• The determination threshold is set higher than a dew point.

• • Potential Applications:**

- Automotive industry for diagnosing exhaust system issues - Emission control systems in industrial settings

• • Problems Solved:**

- Efficient and accurate detection of anomalies in exhaust purification devices - Preventing harmful emissions due to malfunctioning exhaust systems

• • Benefits:**

- Early detection of exhaust system issues - Improved overall performance and efficiency of internal combustion engines

Original Abstract Submitted

An upstream integrated value is an integrated value of a difference obtained by subtracting an upstream gas temperature at a starting point in time of integration from the upstream gas temperature after starting of the internal combustion engine. A downstream integrated value is an integrated value of a difference obtained by subtracting a downstream gas temperature at the starting point in time of the integration from the downstream gas temperature after the starting of the internal combustion engine. An anomaly diagnosing process obtains an anomaly determination result indicating that the exhaust purification device is in a removed state when a deviation between the upstream integrated value and the downstream integrated value is smaller than a reference level. The determination threshold is higher than a dew point.