PATENT CLAIM ANALYSIS

Application Number: 15926940
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["060", "605200"]

Abstract:
Methods and systems are provided for determining a dilution of recirculated gases, including blowthrough air, combusted exhaust gas, and fuel vapor, in a split exhaust engine. In one example, the dilution rate may be calculated using a feedforward model that includes determining a pressure differential across a region in an intake passage, mapped engine parameters such as gas temperature, and exhaust valve timing. Engine operations such as spark advance and fuel injection may be adjusted according to the modeled rate to reduce engine knock and improve combustion efficiency.

Claim (Index 11):
A method, comprising:\n flowing gases from a first set of exhaust valves to a compressor disposed in an intake passage and flowing combusted exhaust gases from a second set of exhaust valves to a turbine disposed in an exhaust passage and not to the intake passage, where each cylinder of a plurality of engine cylinders includes one valve of the first set of exhaust valves and one valve of the second set of exhaust valves; determining a dilution rate of the gases flowing from the first set of exhaust valves to the compressor based on a timing of the first set of exhaust valves and a differential pressure across an exhaust gas recirculation (EGR) valve and across a venturi, the EGR valve positioned in an EGR passage coupled between the first set of exhaust valves and the intake passage, upstream of the compressor, and the venturi arranged in the intake passage downstream of where the EGR passage couples to the intake passage; and adjusting one or more of fuel injection to the plurality of engine cylinders and spark timing based on the determined dilution rate.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 1.48485
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15926970', '15382489', '15382556', '15382479', '15382484']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7900448054472605
- 35 USC 102 Novelty (BERT): 0.5964648551057564
- Combined Prediction Score: 0.77068681041311
- Mean Citation Score: 454.93785800000006
- Max Citation Score: 551.2814
- Similarity Product: 506.16884648919097

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

Dataset: test