Full
Outline
Based on Simulink platform, a gasoline canister purge control strategy model was built. The model included modules like target purge rate calculation, target purge flow calculation and solenoid valve flow characteristic calibration. Model accuracy and air-fuel ratio control performance were verified on a revolving drum test table with flow gauge. Further, the characteristic parameters of control strategy were optimized based on the built model in order to increase purge flow. It shows that the accumulative purge flow during whole cycle is 402.69L and 373.62L for experiment and simulation respectively with 7.78% deviation. Regular purge rate factor, solenoid valve opening speed, limitation of solenoid valve maximum opening and initial purge rate factor all have significant impacts to canister purge flow independently. After applying comprehensive optimization of characteristic parameters, accumulative purge flow rate increases from 373.62L to 499.61L with superior control performance of air-fuel ratio. This research enlightens control strategy design of the gasoline canister to increase purge flow under the premise of satisfied air-fuel ratio control.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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