PATENT CLAIM ANALYSIS

Application Number: 16005486
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["701", "022000"]

Abstract:
Methods and systems are provided for on-board diagnostics of an exhaust gas recirculation (EGR) system of an engine coupled to a hybrid vehicle. In one example, a method may include, upon receiving an engine shut-down request, prior to engine spin-down, rotating the engine at an idling speed via an electric motor and carrying out diagnostics of the EGR system. EGR diagnostics may include estimating a ratio of accumulated difference between a measured EGR flow and an EGR limit to accumulated intake air flow, over a duration of time, and indicating EGR system degradation in response to the ratio being higher than a threshold.

Claim (Index 17):
An engine system, comprising:\n a controller with computer readable instructions stored on non-transitory memory to:\n upon receiving an engine shut-down request, \n disable fuel injection to one or more engine cylinders; \n close an exhaust gas recirculation (EGR) valve housed in an EGR line coupling an exhaust passage and an intake passage; \n prior to engine spin-down, rotate an engine at an idling speed via an electric motor; \n estimate each of an accumulated EGR mass flow and an accumulated intake air mass flow during the engine rotation at the idling speed; and \n indicate a state of degradation of the EGR valve based on a ratio of the accumulated EGR mass flow and the accumulated intake air mass flow.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 94.0
- Lexical Diversity: 1.67647
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15414510', '13973672', '15664892', '14052637', '15260170']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4635738159192341
- 35 USC 102 Novelty (BERT): 0.5234875924832199
- Combined Prediction Score: 0.4695651935756327
- Mean Citation Score: 282.6110460000001
- Max Citation Score: 361.53275
- Similarity Product: 315.21644766779235

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

Dataset: test