PATENT CLAIM ANALYSIS

Application Number: 15863032
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["060", "274000"]

Abstract:
An exhaust after-treatment system has a DEF system with improved DEF purge cycling during which time DEF is returned to a DEF storage tank. The DEF system adapts its methodology based on a condition within the DEF system. A purge valve may be arranged in a doser feed line between a DEF supply module and a DEF doser module. A purging control system may be configured to control the purge valve based on detected states within the DEF system, such as a detected state that corresponds to a plugged DEF doser module. If a plugged doser module is detected, the purge valve may be opened to vent the doser module feed line to atmosphere which allows the DEF to be returned to the DEF storage tank without creating a siphon effect that could draw additional DEF from the DEF storage tank into the supply module.

Claim (Index 1):
An exhaust after-treatment system with improved DEF (diesel exhaust fluid) purge cycling for an agricultural vehicle, the exhaust after-treatment system comprising:\n an SCR (selective catalytic reduction) unit; a DEF (diesel exhaust fluid) system configured to deliver DEF upstream of the SCR unit for reacting with NOx (nitrogen oxides) to reduce NOx emissions, the DEF system including,\n a DEF storage tank for storing the DEF used by the DEF system; \n a supply module configured to withdraw DEF out of the DEF storage tank and deliver the DEF in a downstream direction; \n a doser module configured to receive DEF from the supply module and selectively deliver the DEF upstream of at least a portion of the SCR unit; and \n a DEF purge system for removing DEF from at least one of the supply module and the doser module as purged DEF during a purge cycle and return the purged DEF to the DEF storage tank, and \n wherein the DEF purge system is configured to detect a pressure within the DEF system indicative of a plugged condition of the DEF doser module and to control the purge cycle based on the plugged condition of the DEF doser module.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 86.0
- Lexical Diversity: 2.23529
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14775126', '14320871', '14935125', '15317052', '14935094']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6878029133889038
- 35 USC 102 Novelty (BERT): 0.4859535402799275
- Combined Prediction Score: 0.6676179760780061
- Mean Citation Score: 228.404192
- Max Citation Score: 243.37967000000003
- Similarity Product: 189.9723812368751

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