PATENT CLAIM ANALYSIS

Application Number: 15882203
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["123", "298000"]

Abstract:
An internal combustion engine comprises a fuel injector  31 , a spark plug  16 , a piston  14  having a cavity  91 , a swirl control device  95 , and a control system  70 . The cavity is formed so as to change in distance from the fuel injector to a side wall surface of the cavity, in the circumferential direction. The system performs ignition assist control for successively performing injections of main fuel and ignition assist fuel, makes an air-fuel mixture formed by the ignition assist fuel burn by flame propagation by the spark plug, and makes the remaining fuel burn by pre-mix compression self-ignition. The system controls the swirl control device during the ignition assist control so that when the engine load is high, the fuel sprayed heads toward parts of the side wall surface which are short in distances from the fuel injector.

Claim (Index 1):
An internal combustion engine comprising: a fuel injector arranged at a top surface of a cylinder; a spark plug for igniting an air-fuel mixture in a combustion chamber; a piston having a cavity in its top surface; a swirl control device controlling a strength of a swirl flow formed in said combustion chamber; and a control system configured to control said fuel injector, said spark plug, and said swirl control device,\n wherein said fuel injector is arranged so as to be positioned in said cavity when viewed in an axial direction of said cylinder; said cavity is formed so as to change in distance from said fuel injector to a side wall surface of said cavity, in the circumferential direction; said control system is configured to be able to perform ignition assist control for successively performing injection of main fuel from said fuel injector and injection of ignition assist fuel, and controlling injection amounts and injection timings of said main fuel and said ignition assist fuel and an ignition timing of said spark plug so as to make an air-fuel mixture formed by injection of said ignition assist fuel burn by flame propagation by said spark plug and make the remaining fuel burn by pre-mix compression self-ignition using heat generated by said combustion by flame propagation; and said control system is configured to control said swirl control device during said ignition assist control so that when the engine load is relatively high, compared to when the engine load is relatively low, the fuel sprayed from said fuel injector heads toward parts of said side wall surface which are relatively short in distances from said fuel injector.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 1.98701
- Patent Class: 123.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16087542', '16086299', '16087049', '10529529', '11595467']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7792545328507708
- 35 USC 102 Novelty (BERT): 0.5087708364199383
- Combined Prediction Score: 0.7522061632076876
- Mean Citation Score: 327.628596
- Max Citation Score: 340.2076
- Similarity Product: 278.88938136744497

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

Dataset: test