PATENT CLAIM ANALYSIS

Application Number: 16354019
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["123", "456000"]

Abstract:
Various methods and systems are provided for a pressure relief valve of a fuel system. In one example, a valve includes a first chamber in fluid communication with a first fuel line, a second chamber in fluid communication with a second fuel line and in fluid communication with a fuel storage tank, a piston separating the first chamber from the second chamber, and a needle coupled to the piston and controlling a flow passage between the second fuel line and the second chamber, where the piston and needle are sized such that a force applied on the piston by the first chamber parallel to an axis of movement of the piston maintains the needle in a closed position when the first fuel line flows fuel at a first pressure and the second fuel line flows fuel at a second pressure, the second pressure greater than the first pressure.

Claim (Index 11):
A system, comprising:\n an engine; a fuel rail to supply fuel to a plurality of fuel injectors of the engine; a high pressure fuel pump to supply fuel to the fuel rail; a low pressure fuel pump to supply fuel from a fuel storage tank to the high pressure fuel pump; and a pressure relief valve having a first chamber and a second chamber and fluidically coupled to the low pressure fuel pump at the first chamber and to the fuel rail and fuel storage tank at the second chamber, the pressure relief valve including a piston coupled directly to a needle, the piston dividing the first chamber from the second chamber, the needle controlling a flow passage between the second chamber and the fuel rail, the pressure relief valve configured to:\n be in a closed position during engine priming, engine cranking, and engine operation via the fluidic coupling between the low pressure pump and the first chamber, thereby to maintain pressure in the fuel rail, and \n automatically open upon engine shutdown via the fluidic coupling between the fuel rail and the second chamber, thereby to release the pressure in the fuel rail.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 99.0
- Lexical Diversity: 2.55738
- Patent Class: 123.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14747748', '14690999', '10276559', '10745997', '14358788']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7388801303102507
- 35 USC 102 Novelty (BERT): 0.5051509191324827
- Combined Prediction Score: 0.7155072091924739
- Mean Citation Score: 232.73065000000005
- Max Citation Score: 319.56134
- Similarity Product: 277.8183131101429

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