PATENT CLAIM ANALYSIS

Application Number: 15922187
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["060", "285000"]

Abstract:
The exhaust purification system of an internal combustion engine comprises: a catalyst arranged in an exhaust passage of the internal combustion engine and able to store oxygen; an ammonia detection device arranged in the exhaust passage at a downstream side of the catalyst in a direction of flow of exhaust; and an air-fuel ratio control part configured to control an air-fuel ratio of inflowing exhaust gas flowing into the catalyst to a target air-fuel ratio. The air-fuel ratio control part is configured to perform rich control making the target air-fuel ratio richer than a stoichiometric air-fuel ratio, and make the target air-fuel ratio leaner than the stoichiometric air-fuel ratio when an output value of the ammonia detection device rises to a reference value in the rich control.

Claim (Index 2):
The exhaust purification system of an internal combustion engine according to  claim 1 , further comprising an air-fuel ratio detection device arranged in the exhaust passage at the downstream side of the catalyst in the direction of flow of exhaust, wherein\n in the rich control, if an air-fuel ratio detected by the air-fuel ratio detection device falls to a rich judged air-fuel ratio richer than the stoichiometric air-fuel ratio before the output value of the ammonia detection device rises to the reference value, the air-fuel ratio control part is configured to make the target air-fuel ratio leaner than the stoichiometric air-fuel ratio when the air-fuel ratio detected by the air-fuel ratio detection device falls to the rich judged air-fuel ratio.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 90.0
- Lexical Diversity: 2.33333
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14763653', '15248680', '15227121', '15200136', '14504516']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8154771504568299
- 35 USC 102 Novelty (BERT): 0.5521816835535829
- Combined Prediction Score: 0.7891476037665053
- Mean Citation Score: 451.19281200000006
- Max Citation Score: 470.0604
- Similarity Product: 372.621106313467

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

Dataset: test