| Author | Hossain, Mosharaf Md. |
| Call Number | AIT Thesis no.AE-81-09 |
| Subject(s) | Agricultural machinery--Testing
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A locally manufactured power tiller was tested for the evaluation of field performance, Axle power was measured using a brake drum assembly.
Throttle was adjusted to have a constant engine speed of 2200 rpm. At the same throttle setting, maximum axle power was 4.74 KW at an engine speed of 1913 rpm. Field tests were conducted with a chisel plow. A depth control device
was used to maintain the constant depth of plowing, In the field tests seven variables were measured, namely, depth of plowing, horizontal and vertical forces on plow, moment in the plane of these two forces, wheel rotational speed, forward ground speed and slip, An octagonal ring transducer was used to measure the forces and moment. Speed sensor and slip circuits were used to measure the speeds and slip respectively. Tests were conducted at different moisture levels with tire wheels and cage wheels.
Maximum values of tractive efficiency, transmitted power and coefficient of traction are 52,8%, 2.0 KW and 0.7 respectively at 21.1% moisture content (dry basis) with cage wheels, and 46.4%, 1.74 KW and ,58 respectively at 19.3%
moisture content (db) with tire wheels. These values are low compared to four wheel (2-wheel drive) tractors. Maximum values of tractive efficiency, transmitted power and coefficient of traction were found to be decreasing with
increased moisture level. Slip at maximum tractive efficiently is higher than four wheel tractors. Overall performance of tiller with cage wheels is better than with tire wheels. |
| Year | 1981 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Singh, Gajendra |
| Examination Committee(s) | Jindal, Vinod Kumar ; Koike, Masayuki
|
| Scholarship Donor(s) | Norwegian Government |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1981 |