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| Research on Fuel Injection Control Strategy of Port Fuel Injection Gasoline Engine under Full-Load Conditions |
| DOI： |
| Key Words:IC engine fuel injection strategy port fuel injection power performance |
| Author Name | Affiliation | | WAN Bin, HAO Wei, YU Xiumin, ZHU Zunxiang, FENG Pengpeng, DONG Lidong | 1.Engine Department, China FAW Co., Ltd. R & D Center, Changchun 130011, China
2.National Key Lab of Automotive Simulation and Control, Jilin University, Changchun 130022, China |
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| Abstract:The effect of injector parameters on the mixture preparation process was investigated by using simulation on a port fuel injection engine. To this end the effect of fuel injection timing on power and emission characteristics under full-load condition was studied by experiments. Results show that by improving the injector design, homogeneous mixture required by open-valve injection can be produced by adjusting the injector’s spray cone angle, installation angle and installation position. Through the optimization of injection timing, a best end of injection (EOI) of the best open valve injection is discovered at full load conditions and at a speed of 1 200 r/min～5 600 r/min. When the EOI is 420°, the engine power is increased by 1%～2% compared with that of the closed valve injection, and total hydrocarbons(THC) emissions are almost not affected. While the closed-valve injection has better power performance at the speed of 6 000 r/min. |
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