Regeneration control method and system based on in-cylinder back injection of diesel engine

• Main Authors: HAN SIHAI, FENG DANHUA, ZHANG XIAN, ZHANG GUOPING, HAN LINPEI, KOU XIJING, SONG HUAFEI, SUN LIPING
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2021
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; 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; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The invention provides a regeneration control method and system based on in-cylinder back injection of a diesel engine. The regeneration control method comprises the steps that the operation mode and operation parameters of the engine are obtained, and when the operation mode and the operation parameters of the engine meet the regeneration condition, a regeneration instruction is sent; the monitoring state of a DPF particle catcher is obtained, and when the monitoring state of the DPF particle catcher meets the activation condition, a regeneration activation signal is sent; after the regeneration instruction and the regeneration activation signal are received, the temperature of the air inlet end of the DPF particle catcher is collected; and when the temperature of the air inlet end is lower than the regeneration temperature threshold value, the needed oil injection amount is calculated, and oil injection is conducted according to the needed oil injection amount to promote regeneration. According to the regen