To improve the characteristics of a tractor power transmission system, make system not only meet geometric principle but also working speed requirements tractor, realize continuous adjustment ratio, and solve interruption caused by change ratio. This paper proposes new type five-stage hydraulic mechanical continuously variable (HMCVT), design method based on I-GA. In this paper, intersection po...

The aim of this paper and its sequel is to introduce and classify the holonomy algebras of the projective Tractor connection. After a brief historical background, this paper presents and analyses the projective Cartan and Tractor connections, the various structures they can preserve, and their geometric interpretations. Preserved subbundles of the Tractor bundle generate foliations with Ricci-f...

Soil has elastic-plastic deformation under vibrating working condition. And the acting force between the soil and the vibrating subsoiler parts is of complication. In order to study the effect of the material acting force to the vibrating subsoiler system kinetics features, this paper establishes the vibrating subsoiler system mechanics model considering material acting force. It adopts numeric...

The trends to change from traditional agricultural practices to modern site-specific crop management have been demanded more automated machinery. Thus, an algorithm has been developed for a vision-based guidance system to steer a tractor in the field of row crops. The algorithm treated the extraction of guidance parameters from the images as a pose recognition problem. The first algorithm task ...

Infield to zone transportation with agricultural tractor-trailer units may incur costs of up to nine times those of long distance truck-tractor units. This necessitates the implementation of an optimal cane extraction road network. This paper describes formulas derived to evaluate whether the construction of additional roads and loading zones could enhance a farm’s profitability. The formulas w...

soil compaction has become a widespread problem in the world and it is considered as one of the main factors affecting land degradation in arid and semi-arid agricultural land. the aim of this study was to investigate the effects of soil compaction on soil carbon and nitrogen sequestration, physical (aggregate stability, saturated soil moisture content, bulk density, and porosity) and chemical ...

BACKGROUND:Currently, combines and tractors, being the most energy-intensive transport technological machines for agricultural purposes, largely determine possibility of transition to an efficient environmentally friendly economy, also provide technical aspect transformation agro-industrial complex into leading sector countrys industry. One sources dynamic loads in units subsystems tractor equi...

In this paper, the energy diagnostic of tractor performance consists in evaluating (fuel consumption per hectare—dm3 ha?1) for a given agricultural operation and combining it with working capacity, also called productivity (area productivity—ha h?1). One methods solving problem is identification functioning process machine unit. A model unit was developed, considering rear linkage system implem...

Introduction Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa’s farmers. Day-to-day farm management techniques such as adjusting tractor gear and throttle settings, making use of front-wheel-drive, and other strategies can reduce diesel fuel consumption for row crop production and general tractor operations. This study is being conduct...