Disclosed are a control method for a
combustion system, the
combustion system, and an engine. The control method for the
combustion system comprises: a fuel
injector (10) conducts first primary spray and second primary spray at intervals, and the fuel
injector injects fuel to a first arc
ridge (3) during the first primary spray; and the fuel
injector sprays fuel to a second arc
ridge (6) during the second primary spray. By adopting a
combustion chamber having two arc ridges and respectively injecting fuel to the two arc ridges by means of the fuel injector, it can be ensured that the amount of fuel shared by each arc
ridge is reduced, gathering the fuel at a single arc ridge can be avoided, and it is beneficial to exert the improvement effect of the arc ridge on a wall
impact jet flow velocity field at the
tail end of a fuel beam, such that the fuel and gas distribution in a cylinder is facilitated, the
utilization rate of air in a cylinder cavity is increased, the combustion efficiency is improved, and the heat efficiency of the engine is further improved.