Active control method for low-carbon combustion process of hybrid power engine

Abstract

The invention discloses an active control method for a low-carbon combustion process of a hybrid power engine, and belongs to the technical field of engine combustion. The active control method comprises the following steps that S1, a combustion mode is switched to a mixed gas combustion mode; S2, mixed gas and combustion air are preheated; S3, the excess air coefficient of mixed gas in a cylinder is measured; S4, an in-cylinder pressure signal in the cylinder is measured, and an angular domain rotating speed and a position signal in the cylinder are measured; S5, the ignition time is optimally controlled, and the ignition delay period length is reduced; S6, the time of the obvious combustion period is actively controlled; and S7, after the post-combustion period is finished, the low-carbon combustion process is completed. According to the active control method for the low-carbon combustion process of the hybrid power engine, the low-carbon combustion process of the hybrid power engine is achieved by controlling the two combustion processes of the ignition delay period and the obvious combustion period in the ignition delay period, the obvious combustion period and the post-combustion period in the normal combustion process of the engine.

Description

technical field [0001] The invention relates to the technical field of engine combustion, and specifically relates to a method for actively controlling the low-carbon combustion process of a hybrid engine. Background technique [0002] Existing automobiles usually use diesel engines, gasoline engines or hybrid engines, wherein hybrid engines have the advantages of high efficiency, energy saving and high reliability, and have good application prospects. However, in the existing hybrid engine, the mixed gas and the combustion air enter the cylinder at different times, resulting in uneven mixing of the mixed gas and the combustion air, and the two combustion processes in the ignition delay period and the obvious combustion period cannot control the optimal time point. The energy loss in the combustion process is serious, so the emission rate of fine particles and nitrogen oxides from the diesel engine is relatively high, and the pollution caused is relatively serious. [0003]...

AI Technical Summary

Problems solved by technology

However, in the existing hybrid engine, the mixed gas and the combustion air enter the cylinder at different times, resulting in uneven mixing of the mixed gas and the combustion air, and the two combustion processes in the ignition delay period and the obvious combustion period cannot control the optimal time point. The energy loss in the combustion process is serious, so the emission rate of fine particles and nitrogen oxides from diesel engines is relatively high, and the pollution caused is relatively serious

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