Quick heat preservation control method and system for floor type GPF carbon accumulation test scale reforming vehicle

• Main Authors: ZHANG SHUANGRONG, ZHUANG JIANBING, GUO CHONG, QI ZHENGGANG
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The invention relates to a rapid heat preservation control method and system for a floor type GPF carbon accumulation test scale reforming vehicle, and the control method comprises the steps: maintaining an engine in an idling operation state after the GPF whole vehicle carbon accumulation test is completed, adjusting the idling rotation speed and the idling reserve torque of the engine, enabling the maximum value of the internal temperature of the GPF to reach an ideal heat preservation interval, and maintaining the maximum value of the internal temperature of the GPF; the engine is maintained to run for preset time; and then the idling target air-fuel ratio is adjusted to be in a lean state, the three-way catalyst and the GPF are filled with oxygen, after the three-way catalyst and the GPF are filled with oxygen, an engine is flamed out, the GPF is rapidly detached by lifting the vehicle and transferred to high-precision weighing equipment, and weight measurement is conducted on the GPF at all weighing meas