PATENT CLAIM ANALYSIS

Application Number: 15968447
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-08
Patent Classification: ["701", "104000"]

Abstract:
A system for controlling an internal combustion engine has an in-cylinder pressure sensor, a crank angle sensor and a controller coupled to receive inputs from the pressure sensor and crank angle sensor. The controller is configured to convert the cylinder pressure input into a combustion metric indicative of the combustion occurring in the measured cylinder and control fuel input and timing into the engine based on the combustion metric. The controller samples the in-cylinder pressure sensor at a high frequency during critical combustion events and at a lower frequency during the non-critical cylinder conditions.

Claim (Index 22):
A controller for controlling operation of a dual-fuel internal combustion engine of an engine system, the engine system comprising a pressure sensor configured to measure pressure in a cylinder of the engine and generate a corresponding pressure signal and a crank angle sensor configured to measure the crank angle of the engine and generate a corresponding crank angle signal, the controller comprising:\n a processor couplable to the pressure sensor and the crank angle sensor; and at least one non-transitory computer readable medium storing instructions operable to cause the processor of the controller to perform operations comprising:\n (a) sample the crank angle signal, \n (b) sample the pressure signal of each cylinder of the engine at a first frequency during a first range of cylinder crank angles, the first range of cylinder crank angles including the ignition position of the cylinder and at least a portion of a combustion period of the cylinder, \n (c) sample the pressure signal at a second frequency during a second range of cylinder crank angles, the second frequency being lower than the first frequency, \n (d) calculate combustion metrics including IMEP, an adiabatic heat release rate of combustion in the cylinder, and combustion phasing based on the sampled crank angle and pressure signals, \n (e) determine a combustion phasing trigger and a substitution rate between a first fuel and a second fuel as a function of the calculated adiabatic heat release rate of combustion in the cylinder, \n (f) adjust the combustion phasing trigger based on the calculated combustion phasing to meet a combustion phasing target, \n (g) adjust the fuel substitution rate based on the calculated IMEP to meet an IMEP target, and \n (h) control the engine based on the adjusted combustion phasing trigger and fuel substitution rate.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 93.0
- Lexical Diversity: 1.84906
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15099486', '10478562', '15439875', '11475754', '15557613']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4725502169167068
- 35 USC 102 Novelty (BERT): 0.525079170991166
- Combined Prediction Score: 0.4778031123241528
- Mean Citation Score: 234.368282
- Max Citation Score: 366.5352
- Similarity Product: 265.6280499320984

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