PSI - Issue 12

Francesco Mocera et al. / Procedia Structural Integrity 12 (2018) 213–223 Author name / Structural Integrity Procedia 00 (2018) 000–000

219 7

(a)

(b)

(c)

(d)

Fig. 6: Experimental results of three di ff erent working cycle (Test 1 to 3): a) average power, b) peak power, c) working time for each phase, d) total fuel consumption for each phase.

its related accessories are connected to the hydraulic pump. This first set of measurements already showed the strong correlation between engine rpm, engine load and fuel consumption. Actually, from these quantities it is possible to identify the main parameter for a proper sizing of an alternative architecture:

• mean power • peak power • used energy estimation • engine rpm • working time

The first two parameters set mechanical performance requirements of the new architecture. The used energy in fluences the size of the required energy storage system depending on the specific architecture chosen. As previously stated, the farmer adapts the operating parameters, engine rpm and working time, to obtain the best characteristics of the meal depending on the indications of their specific recipes. Thus these parameters become important requirements for the new machine. After this preliminary phase, the on field measurement activities were done obtaining the results shown in Fig. 6. The activities monitored during the working cycle can be described as follows: