Diesel engine switching mode urea dosage control system

• Main Authors: YANG HAOCHUAN, WU JUN, YUAN XINJIAN
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

A diesel engine switching mode urea dose control system, relating to the field of automobile exhaust control, includes a leak reference controller including a model-based component that uses an observed stored score estimated value, and a switching mode controller that controls a urea dose of a diesel engine using the observed stored score estimated value. And a feedback component using only ammonia leakage information, the switching mode controller comprising two switching modes: leakage tracking and storage tracking, switching between the leakage tracking and storage tracking modes according to switching logic, the first switching mode controller using constant storage reference and temperature-related switching logic, the second switching mode controller using constant storage reference and temperature-related switching logic, and the third switching mode controller using constant storage reference and temperature-related switching logic. The second controller is intended to have predictive capabilities an