View source for 18364677. FILTER ABNORMALITY DETERMINATION SYSTEM simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

=FILTER ABNORMALITY DETERMINATION SYSTEM=


==Organization Name==

[[:Category:TOYOTA JIDOSHA KABUSHIKI KAISHA|TOYOTA JIDOSHA KABUSHIKI KAISHA]]


[[Category:TOYOTA JIDOSHA KABUSHIKI KAISHA]]

==Inventor(s)==

[[:Category:Junpei Shouji of Toyota-shi (JP)|Junpei Shouji of Toyota-shi (JP)]][[Category:Junpei Shouji of Toyota-shi (JP)]]

==FILTER ABNORMALITY DETERMINATION SYSTEM - A simplified explanation of the abstract==


This abstract first appeared for US patent application 18364677 titled 'FILTER ABNORMALITY DETERMINATION SYSTEM

==Simplified Explanation==

The patent application describes a system for determining abnormality in a filter in an internal combustion engine exhaust system based on oxygen concentration in the exhaust gas.

* The system includes an internal combustion engine with multiple cylinders, an exhaust passage connected to the engine, and a filter in the exhaust passage that outputs a detection value corresponding to oxygen concentration in the exhaust gas.
* A determination device in the system includes a control unit that adjusts the air-fuel ratio of one cylinder differently from another during imbalance control, and a determination unit that assesses filter abnormality based on the detection value of the sensor corresponding to the air-fuel ratio of the exhaust gas from the cylinder during imbalance control.

== Potential Applications ==
This technology could be applied in automotive industry for monitoring and diagnosing filter abnormalities in internal combustion engines.

== Problems Solved ==
This technology helps in early detection of filter abnormalities in exhaust systems, allowing for timely maintenance and preventing potential engine damage.

== Benefits ==
- Improved engine performance
- Reduced maintenance costs
- Enhanced engine longevity

== Potential Commercial Applications ==
"Filter Abnormality Determination System for Internal Combustion Engines" could be used in automotive manufacturing, maintenance, and repair industries.

== Possible Prior Art ==
There may be prior art related to exhaust gas monitoring systems in internal combustion engines, but specific examples are not provided in the abstract.

== Unanswered Questions ==

=== How does the determination unit differentiate between normal and abnormal filter conditions based on the sensor data? ===
The patent application does not elaborate on the specific criteria or algorithms used by the determination unit to determine filter abnormality.

=== Are there any potential safety implications of a filter abnormality in an internal combustion engine exhaust system? ===
The abstract does not address the potential safety risks associated with a malfunctioning filter in the exhaust system.


==Original Abstract Submitted==

A filter abnormality determination system includes: an internal combustion engine having a plurality of cylinders; an exhaust passage connected to the internal combustion engine; a filter provided in the exhaust passage and opposed to the filter and outputting a detection value corresponding to an oxygen concentration in the exhaust gas; and a determination device, wherein the determination device includes a control unit that executes an imbalance control for controlling an air-fuel ratio of one of the plurality of cylinders to a value different from an air-fuel ratio of another of the plurality of cylinders; and a determination unit for determining whether the filter is abnormal based on a detection value of the sensor corresponding to an air-fuel ratio of an exhaust gas of the one cylinder during execution of the imbalance control.



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