عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The point of this study is a comparative evaluation of effects of DPA rotary and PL linear injector pumps on performance parameters (torque, power and brake specific fuel consumption) and emissions (Soot, NOx and HC) with variable speeds of the engine at full loads. Thus each of aforementioned pumps were installed and the engine was tested at 11 different engine speeds, from 1000 to 2000 (rpm) with 100 (rpm) intervals. The statistical analysis was conducted by the Minitab software (version 16) based on the factorial test with a completely randomized model considering the pump (linear and rotary) and engine speed factors with 3 replications. Results of the statistical analysis of data showed a significant difference at 1% level of the injector pump on the brake torque and the specific fuel consumption, while there was no significant effect on the amount of the brake power. The type of the injector pump on the amount of emissions (Soot, NOx and HC) emitted from the engine, has a significant effect on the level of 1%.