چكيده به لاتين
Construction machinery is one of the most important factors of development in the mining and construction projects. These machines directly affect several important factors in construction projects. Factors such as cost speed of project progress, and ease of project execution. Generally, a significant portion of the budget allocated for development projects is devoted to construction machinery. The highest cost in these machines is related to fuel consumption, for example 30-60% of total wheel loader costs are related to fuel consumption. Emissions from construction vehicles also have a significant impact on pollution. Most construction vehicles have repetitive tasks that are repeated thousands of times throughout the project. Having a proper work cycle for these types of vehicles helps to reduce fuel consumption, emissions, reduce costs and speed up development of mining and construction projects. Since in our country this issue is not considered and European cycles and standards are used to measure pollution and fuel consumption, therefore, this project aims to extract two types of used cars in construction sites. For this purpose, GPS was loaded in real-time, and an electronic excavator was used to record hydraulic pressure. The Markov Chain and Genetic Cycle Algorithms of these two types of vehicles were extracted and simulated by emission software. Comparing the results of the Tehran Cycle Loader simulation with the other Cycle Loaders available in the world, it was found that fuel consumption in the Tehran Cycle Loader is approximately 47% higher than the US Cycle Loader and 72% higher than the European non-road cycle fuel consumption. The emission rate of nitrogen oxides and hydrocarbons in Tehran Cycle Loader was significantly higher than similar cycles, while the rate of carbon monoxide emission in Tehran cycle was lower than in similar cycles. The performance cycle of the excavator hydraulic pump performance after simulating fuel consumption is 538 liters per 100 kilometers, showing 1370.57 nitrogen oxides, 10,758 monoxides and 147,417 hydrocarbons per gram kilometer. By combining the loader cycle and the hydraulic pump cycle simultaneously in the ADWS software and comparing the results with the hydraulic pump cycle without the hydraulic pump cycle, it was found that as a result of the addition of the hydraulic pump cycle to the loader cycle, fuel consumption increased by 20%, mono-pollutants. Carbon and hydrocarbons increased by 90% and 66%, respectively, while nitrogen oxides decreased by 25%.
