首页>
外国专利>
SYSTEMS AND METHODS FOR PURGING REDUCTANT FROM A REDUCTANT INJECTOR
SYSTEMS AND METHODS FOR PURGING REDUCTANT FROM A REDUCTANT INJECTOR
展开▼
机译:从还原剂注入器中注入还原剂的系统和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector comprises a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line. A compressed gas source is operatively coupled to the reductant injector and provides a compressed gas to the reductant injector for gas assisted delivery of the reductant. A controller is operatively coupled to the compressed gas source and the reductant insertion assembly and configured to determine whether there is a reductant demand for the reductant. In response to there being no reductant demand, the controller stops the pump and activates the compressed gas source for a predetermined time so as to provide compressed gas to the reductant injector at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the pump is stopped.
展开▼