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一种增程器车辆尿素喷嘴高温结晶堵塞解决方法

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10Claims · 1 independent
§ Ⅰ

Dossier Overview

Inventor

杨顺; 刘军; 康昊昊; 任红云; 邵琰鑫; 陈勇; 凌建群

Filing Date

Aug 24, 2026

Publication Date

Oct 16, 2026

IPC Classification

F02D 41/02 (2006.01)

本发明公开一种增程器车辆尿素喷嘴高温结晶堵塞解决方法,涉及发动机技术领域,其包括:当满足预设功能释放条件时,获取发动机停机时刻的排气温度和排气流量,从预标定的喷嘴温升Map1中计算停机后尿素喷嘴的预期温度;根据预期温度与预设目标温度计算需求温降Δt,再从预标定的喷嘴温降Map2中插值出尿素喷射量和喷射频率,据此持续喷射尿素,将喷嘴内聚集的热量带走。本发明可在发动机停机后有效降低尿素喷嘴温度,避免喷嘴高温结晶堵塞及硬件损坏,防止排放超标和整车限速限扭,降低维修成本,保障车辆正常运营。

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