PATENT CLAIM ANALYSIS

Application Number: 15862667
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["060", "274000"]

Abstract:
A slope Δ t1 HC  in a linear area of sensor output characteristics for a mixed atmosphere of CO and THC and a slope Δ t1 NH  in the linear area of the sensor output characteristics for NH 3  are specified in advance at a time when a time t 1  has elapsed since a start of use of an engine. In performing calibration of an NH 3  sensor when a time t 2  (greater than the time t 1 ) has elapsed, a slope Δ t2 HC  in the linear area of the sensor output characteristics for the mixed atmosphere is specified, a value Δ t2 NH  is calculated from an equation Δ t2 NH =Δ t2 HC /(Δ t1 HC /Δ t1 NH ), and the calculated value Δ t2 NH  is determined as a new slope in the linear area of the sensor output characteristics for an NH 3  gas.

Claim (Index 1):
An ammonia sensor calibration method of calibrating output characteristics of an ammonia sensor for an ammonia gas, said ammonia sensor being located downstream from a selective catalytic reduction denitration apparatus on an exhaust path of a diesel engine, a relationship between a logarithmic value of a concentration of a predetermined gas component in an exhaust gas exhausted from said diesel engine and an output value from said ammonia sensor when said predetermined gas component is detected being defined as sensor output characteristics for said predetermined gas component, the ammonia sensor calibration method comprising:\n a) specifying in advance a slope \u0394 t1 HC  in a linear area of said sensor output characteristics for a mixed atmosphere of carbon monoxide and total hydrocarbons and a slope \u0394 t1 NH  in said linear area of said sensor output characteristics for an ammonia gas at a time when an arbitrary time t 1  has elapsed since a start of use of said diesel engine; and b) performing calibration of said ammonia sensor when a time t 2  has elapsed since said start of use of said diesel engine, said time t 2  being greater than said time t 1 , wherein said step b) includes:\n b-1) specifying a slope \u0394 t2 HC  in said linear area of said sensor output characteristics for said mixed atmosphere; \n b-2) calculating a value \u0394 t2 NH  from an equation \u0394 t2 NH =\u0394 t2 HC /(\u0394 t1 HC /\u0394 t1 NH ); and \n b-3) determining said value \u0394 t2 NH  calculated in said step b-2) as a new slope in said linear area of said sensor output characteristics of said ammonia sensor for said ammonia gas.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 2.68333
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13859435', '14248875', '12674095', '14953592', '13940680']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6942429677401486
- 35 USC 102 Novelty (BERT): 0.4784266294989375
- Combined Prediction Score: 0.6726613339160274
- Mean Citation Score: 230.784504
- Max Citation Score: 237.90659
- Similarity Product: 198.5505797692281

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

Dataset: test