Diesel exhaust fluid dosing system for vehicle exhaust after-treatment system, comprises pressure sensor set downstream of diesel particulate filter to detect variation in exhaust gas pressure, and control unit operatively connected to pressure sensor and dosing unit
	GOPE S; JOSEPH J; SHESH R; NAIR V S; VUTUKURI V R
	2024-11-19
专利权人	DAIMLER TRUCK AG (DAIM-C)
申请日期	2024-11-19
专利号	IN202441089583-A
成果简介	NOVELTY - The system (100) comprises a pressure sensor (101) positioned downstream of a diesel particulate filter (DPF) (102), to detect variation in exhaust gas pressure; a dosing unit (103) to inject DEF into an exhaust stream (109) upstream of a selective catalytic reduction (SCR) catalyst (104); a control unit (105) operatively connected to the pressure sensor (101) and the dosing unit (103), configured to: i. receive real-time exhaust pressure data from the pressure sensor (101); ii. calculate exhaust gas turbulence based on the pressure variations detected by the pressure sensor (101); and iii. generate one or more control signals to adjust the Diesel Exhaust Fluid (DEF) dosing rate based on the calculated exhaust gas turbulence. USE - Diesel exhaust fluid (DEF) dosing system for a vehicle exhaust after-treatment system. ADVANTAGE - The mixer enhances uniform distribution in the exhaust flow. The method improves nitrogen oxide (Nox) emission reduction efficiency, prevents localized crystallization on the SCR catalyst, and optimizes overall exhaust after-treatment performance, ensuring compliance with environmental regulations. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for optimizing diesel exhaust fluid (DEF) dosing in a vehicle exhaust after-treatment system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a diesel exhaust fluid dosing system for a vehicle exhaust aftertreatment system. 100System 101Pressure sensor 102Diesel particulate filter 103Dosing unit 104Selective catalytic reduction catalyst 105Control unit 109Exhaust stream
IPC 分类号	B01D-053/94 ; F01N-013/00 ; F01N-003/20 ; F01N-009/00 ; F02D-041/02
国家	印度
专业领域	能源矿产
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/14497
专题	中国科学院新疆生态与地理研究所
作者单位	DAIMLER TRUCK AG (DAIM-C)
推荐引用方式 GB/T 7714	GOPE S,JOSEPH J,SHESH R,et al. Diesel exhaust fluid dosing system for vehicle exhaust after-treatment system, comprises pressure sensor set downstream of diesel particulate filter to detect variation in exhaust gas pressure, and control unit operatively connected to pressure sensor and dosing unit. IN202441089583-A[P]. 2024.

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