In order to improve the economic performance and knock suppression of natural gas-diesel dual-fuel engine, the cylinder pressure control technology based on pressure self-adaptive piston (PSAP) was studied. The engine working process model was established in AVL-BOOST, the piston dynamics model was established in Matlab/Simulink, and the dual-model coupling was realized. The simulation results show that: PSAP can effectively control cylinder pressure, and can increase the maximum burst pressure to 8.12 MPa under 25% load conditions, and reduce the maximum burst pressure to 13.82 MPa under 100% load conditions; PSAP can reduce cyclic pressure fluctuation, compared with the original engine, the maximum reduction is 0.19 MPa; PSAP can reduce the fuel consumption rate under low load condition, and suppress knock by displacement of the piston head under high load condition.
Cylinder pressure control technology of natural gas-diesel dual-fuel engine based on pressure self-adaptive piston
22.10.2021
3159487 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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