| Autor: |
Haque, M. A., Islam, M. M., Islam, A. K. M. S. |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
|
| DOI: |
10.22004/ag.econ.276597 |
| Popis: |
The functional effectiveness of a locally made hydrotiller was studied and its faults and shortcomings were identified. Accordingly, necessary modifications and adjustments of its functional elements were accomplished in order to make the hydrotiller effective for Bangladesh conditions. The problems related to the poor maneuverability as well as control of the prototype were also taken into consideration. Proper design of the transmission chain was recommended in order to avoid its failure. The forward speed of the prototype was higher than the normal walking speed of an operator. The speed was reduced by 14% and 33.22% after shifting the placement of the engine 6.5 cm backward and replacing the primary transmission pulley by a larger one, respectively. Performance test of the prototype was conducted after necessary modifications and adjustments of its elements. The average effective field capacity was found to be about 0.29 ha/h durin9, the first and second passes in silty loam soil. Average soil bulk density reduced from 0.93 to 0.67 g/ce and average puddling index increased from 28 to 47% after the second pass. Fuel consumption and specific fuel consumption of the hydrotiller were 0.6 l/h and 0.16 1/kW h, respectively. Two consecutive passes were required for preparation of the field by the hydrotiller. The performance evaluation test revealed that the modified prototype of the hydrotiller can effectively be used for puddling operation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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