Japan, Sept. 16 -- KUBOTA CORP has got intellectual property rights for 'EXHAUST GAS RECIRCULATION DEVICE.' Other related details are as follows:
Application Number: JP,2023-196638
Category (FI): F02M26/49,F02D21/08@Z,F02M26/46@C,F02M26/47@A,F02M26/00,311
Stage: PROBLEM TO BE SOLVED: To provide an exhaust gas recirculation device capable of restoring the combustion from abnormal combustion to normal combustion in the event of an accidental fire when controlling opening of flow rate adjusting means by the learning using an NOx sensor.SOLUTION: An exhaust gas recirculation device 3 includes: an exhaust pipe 26; a diesel oxidation catalyst 261; a temperature sensor 54 for measuring the temperature inside the exhaust pipe 26; an NOx sensor 53 for measuring NOx concentration inside the exhaust pipe 26; an exhaust gas recirculation pipe 27 for guiding exhaust recirculation gas to an induction system; flow rate adjusting means 28 for adjusting a flow rate of the exhaust recirculation gas; and a control device 4 for learning a correction value derived on the basis of a deviation between a target value of the NOx concentration and an actually measured value of the NOx concentration, and executing control to set a final opening of the flow rate adjusting means 28 on the basis of the learned learning value and the basic opening of the flow rate adjusting means 28, and executing control to lower the final opening of the flow rate adjusting means 28 when the temperature measured by the temperature sensor 54 becomes a predetermined temperature or higher.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: Nov. 20, 2023
Publication Date: May 30, 2025
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
