PATENT CLAIM ANALYSIS

Application Number: 15781877
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["060", "598000"]

Abstract:
A method of detecting surging in a turbocharger provided for an internal combustion engine, includes: a first characteristic quantity calculation step of calculating a first characteristic quantity in at least one first frequency region corresponding to at least one first peak frequency component unique to the time of occurrence of surging in the turbocharger on the basis of a time-variable waveform indicating a time-series change of a rotation speed of the turbocharger; a second characteristic quantity calculation step of calculating a second characteristic quantity in a second frequency region including the at least one first frequency region on the basis of the time-variable waveform; and a detection step of detecting surging in the turbocharger on the basis of a relationship between the first characteristic quantity and the second characteristic quantity. The second frequency region further includes at least one second peak frequency unique to the time of acceleration and deceleration of the internal combustion engine from among frequency components different from the at least one first peak frequency component.

Claim (Index 7):
The method of detecting surging in a turbocharger according to  claim 1 ,\n wherein the time-variable waveform is calculated from a rotation speed data obtained by measuring the rotation speed at each point of time in a time-series manner with a rotation-speed measurement sensor mounted to the turbocharger, wherein the first characteristic quantity calculation step includes calculating the first characteristic quantity by inputting the time-variable waveform into a first bandpass filter configured to pass only frequencies in the first frequency region, and applying a predetermined calculation process to an output signal of the first bandpass filter, and wherein the second characteristic quantity calculation step includes calculating the second characteristic quantity by inputting the time-variable waveform into a second bandpass filter configured to pass only frequencies in the second frequency region, and applying a predetermined calculation process to an output signal of the second bandpass filter.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 94.0
- Lexical Diversity: 2.86885
- Patent Class: 60.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15781864', '11878117', '12142411', '15025466', '11072397']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7346303394903978
- 35 USC 102 Novelty (BERT): 0.4761342834237904
- Combined Prediction Score: 0.7087807338837371
- Mean Citation Score: 183.7171
- Max Citation Score: 198.99602
- Similarity Product: 141.7004932316184

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

Dataset: test