초록

A selective catalytic reduction emissions control includes a NO.sub.x -reducing reagent stored in a vessel. The system includes apparatus and a method for determining when the vessel is empty or when the vessel is filled with a substance other than an acceptable NO.sub.x -reducing reagent.

대표청구항 ▼

[ What is claimed is:] [1.]1. An electronic control system for a compression ignition engine having an exhaust output, said control system comprising:a vessel for storing a solid ammonia producing reagent;a sublimation sensor associated with said vessel and producing a sublimation signal;a valve in

[ What is claimed is:] [1.]1. An electronic control system for a compression ignition engine having an exhaust output, said control system comprising:a vessel for storing a solid ammonia producing reagent;a sublimation sensor associated with said vessel and producing a sublimation signal;a valve in fluid communication with said vessel and said exhaust output;a controller associated with said engine and controlling operation of the engine, said controller being connected with said valve and said sublimation sensor and modifying engine operation in response to said sublimation signal; anddata representing at least one sublimation curve stored in said controller, said sublimation curve corresponding to a solid ammonia producing agent;wherein said sublimation sensor includes:a temperature sensor; anda pressure sensor;wherein said sublimation signal includes:a temperature signal produced by said temperature sensor; anda pressure signal produced by said pressure sensor b.