PATENT CLAIM ANALYSIS

Application Number: 15895349
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["123", "568160"]

Abstract:
An EGR malfunction detection system includes an EGR valve configured to open and close an exhaust recirculation path for recirculating an exhaust gas from an exhaust channel to an intake channel of an engine, a measurement unit configured to measure an intake pressure inside the intake channel, a valve controller configured to control the EGR valve, and a malfunction detector configured to detect an anomaly in the exhaust recirculation path in accordance with a measurement unit output and a valve controller output. The malfunction detector determines whether the EGR valve is stuck in accordance with the intake pressures measured when the EGR valve is controlled to open and close. If the EGR valve is stuck, the malfunction detector determines whether the EGR valve is stuck in an open state, stuck in a closed state, or stuck in an intermediate state by comparing the measured pressure with predetermined thresholds.

Claim (Index 2):
An EGR malfunction detection system comprising:\n an EGR valve configured to open and close an exhaust recirculation path for recirculating an exhaust gas from an exhaust channel to an intake channel of an engine; a sensor configured to measure an intake pressure inside the intake channel; a controller configured to control the EGR valve; and circuitry configured to\n detect an anomaly in the exhaust recirculation path in accordance with an output from the sensor and an output from the controller, wherein \n the circuitry determines that the EGR valve is stuck in an open state if the intake pressure is larger than a first threshold when the EGR valve is controlled to be in a closed state by the controller and if the intake pressure is larger than a second threshold that is larger than the first threshold when the EGR valve is controlled to be in the open state by the controller, the circuitry determines that the EGR valve is stuck in the closed state if the intake pressure is smaller than the first threshold when the EGR valve is controlled to be in the closed state by the controller and if the intake pressure is smaller than the second threshold when the EGR valve is controlled to be in the open state by the controller, and the circuitry determines that the EGR valve is stuck in an intermediate state if the intake pressure is larger than the first threshold when the EGR valve is controlled to be in the closed state by the controller and if the intake pressure is smaller than the second threshold when the EGR valve is controlled to be in the open state by the controller.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 88.0
- Lexical Diversity: 2.61667
- Patent Class: 123.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13388835', '12677194', '12068721', '15664892', '12935705']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.751906419297789
- 35 USC 102 Novelty (BERT): 0.4825877473273558
- Combined Prediction Score: 0.7249745521007457
- Mean Citation Score: 254.638998
- Max Citation Score: 272.1307
- Similarity Product: 232.6706507132292

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