Group 1 - Dongfeng Motor Corporation has applied for a patent titled "A Method, Device, Equipment, and Medium for Controlling an Extended Range Vehicle Engine," with publication number CN120792794A and application date set for July 2025 [1] - The patent describes a control method for the engine of an extended range vehicle, which includes obtaining vehicle operation information and the temperature of the exhaust system's catalyst [1] - The method involves determining a first ignition angle based on a preset ignition strategy and operation information, controlling the engine to operate at this angle until the catalyst temperature reaches a first preset temperature [1] Group 2 - Once the catalyst temperature reaches the first preset temperature but does not exceed a second preset temperature, a second ignition angle is determined based on the first ignition angle, operation information, and a preset delay strategy [1] - The second ignition angle is set to occur later than the corresponding first ignition angle, allowing for unburned fuel to undergo secondary combustion in the exhaust system to rapidly increase the catalyst temperature [1] - Dongfeng Motor Corporation, established in 2001 and located in Wuhan, primarily engages in the automotive manufacturing industry, with a registered capital of 858.937 million RMB [2]