PATENT CLAIM ANALYSIS

Application Number: 15937623
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-04
Patent Classification: ["060", "285000"]

Abstract:
An exhaust purification system comprises an exhaust purification catalyst  20 , an NO X  sensor  46 , air-fuel ratio sensor  41  downstream of the catalyst  20 , and a control and diagnosis device. The device alternately sets a target air-fuel ratio to a rich air-fuel ratio and a lean air-fuel ratio and switches the target air-fuel ratio from the rich air-fuel ratio to the lean air-fuel ratio when the output air-fuel ratio of the air-fuel ratio sensor becomes a rich judged air-fuel ratio or less. The device diagnoses abnormality of the catalyst based on the output of the NO X  sensor. It diagnoses abnormality of the catalyst when the air-fuel ratio of the exhaust gas flowing into the catalyst is a rich air-fuel ratio, but does not diagnose abnormality of the catalyst when the air-fuel ratio of the exhaust gas flowing into the catalyst is a lean air-fuel ratio.

Claim (Index 4):
The exhaust purification system of an internal combustion engine according to  claim 1 , wherein\n the control device is configured to estimate a degree of total deterioration of the exhaust purification catalyst including the irreversible deterioration and reversible deterioration due to sulfur poisoning of the exhaust purification catalyst without using output of the NO X  sensor, in second deterioration degree estimation control, and the control device is configured to estimate a degree of reversible deterioration of the exhaust purification catalyst, based on a degree of total deterioration estimated by the second deterioration degree estimation control and a degree of irreversible deterioration estimated by the first deterioration degree estimation control.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 2.90566
- Patent Class: 60.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15083449', '15083378', '15329780', '15559086', '15325471']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8063330771048313
- 35 USC 102 Novelty (BERT): 0.576007012336939
- Combined Prediction Score: 0.783300470628042
- Mean Citation Score: 503.1625340000001
- Max Citation Score: 520.6789
- Similarity Product: 405.9609456303359

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test