Automotive urea temperature control system and control method and automobile

• Main Authors: CHEN YU, JIANG YANG, TONG JIANMING, BAI LIZHU
• Format: Patent
• Language: Chinese; English
• Published: 11.04.2023
• 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

The invention provides an automotive urea temperature control system and method and an automobile, and relates to the technical field of emission aftertreatment, the system comprises an engine, a temperature acquisition assembly, a first three-way control valve, a second three-way control valve, a water heating pipe, an electric heating device and a urea controller; the engine, the first three-way control valve, the water heating pipe and the second three-way control valve form a cooling liquid large circulation pipeline; the first three-way control valve, the water heating pipe and the second three-way control valve form a cooling liquid small circulation pipeline; the urea controller controls the first three-way control valve and the second three-way control valve to act, so that the system is switched to the cooling liquid small circulation pipeline or the cooling liquid large circulation pipeline, and the electric heating device is controlled to be turned on or turned off. The urea solution can be unfroze